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Research on natAg(γ,xn)103-106Ag reaction cross sections with the bremsstrahlung end-point energy of 70 and 75 MeV Nucl. Instrum. Methods Phys. Res. Sect. B Beam Interact. Mater. Atoms (IF 1.3) Pub Date : 2024-03-05 Haladhara Naik, Guinyun Kim, Wooyoung Jang, Mansoureh Tatari, Thi Hien Nguyen, Yong Uk Kye, Moo-Hyun Cho
The flux-weighted average cross sections of Ag(γ,xn)Ag reactions were measured with the bremsstrahlung end-point energy of 70 and 75 MeV using an activation and off-line γ-ray spectrometric technique. The GEANT4 code was used for the simulation of the bremsstrahlung spectra. The cross sections of Ag(γ,xn) Ag reactions as a function of mono-energetic photons were theoretically calculated by using the
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Chemical damage around Xe ion tracks in Poly(allyl diglycol carbonate) PADC track detector Nucl. Instrum. Methods Phys. Res. Sect. B Beam Interact. Mater. Atoms (IF 1.3) Pub Date : 2024-03-02 Ken Yasuda, Yutaka Mori, Tamon Kusumoto, Shunto Sadamitsu, Bunta Ishihara, Daisuke Kohinata, Masato Kanasaki, Satoshi Kodaira, Rémi Barillon, Tomoya Yamauchi
The objective of the present contribution has been to evaluate the chemical damage along latent tracks in PADC irradiated with 2.3, 80, 130, and 420 MeV/u Xe ions. For this purpose, a FT-IR spectrometry was used. Greater G values were obtained for higher energy, concordant with the previous results for H, He, C, Ar, Kr and Fe ions. Since the ethers and carbonate esters in PADC have high sensitivity
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Influence of neutron irradiation parameter and annealing temperature on neutron-transmutation-doped heteroepitaxial GaN film Nucl. Instrum. Methods Phys. Res. Sect. B Beam Interact. Mater. Atoms (IF 1.3) Pub Date : 2024-03-02 Yueh-Chun Chung, Der-Sheng Chao, Jenq-Horng Liang
Neutron transmutation doping (NTD) has demonstrated its initial feasibility in offering precisely controlled and highly uniform dopants within bulk gallium nitride (GaN) wafers. This study aims to assess the doping efficacy of NTD applied to heteroepitaxial GaN films and address the technical challenges related to neutron damage and impurity activation through a comprehensive investigation of neutron
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Radiation stability of Nd-doped perovskite ceramics for trivalent actinide waste (An+3) storage Nucl. Instrum. Methods Phys. Res. Sect. B Beam Interact. Mater. Atoms (IF 1.3) Pub Date : 2024-03-01 Nouar Bensemma, Andrew Smith, Mir Anamul Haq, Ali Sari, Dalila Moudir, Chetna Tyagi, Wafa Boukhemkhem, Mhammed Salhi, Fadhela Haid, Aissa Bourennane
Perovskite ceramics are candidate host matrices for the storage of nuclear wastes. In this work, NdO is incorporated into calcium titanate CaTiO in the form of CaNdTiO ( = 0, 0.225, 0.525 and 0.85). To simulate the self-irradiation of trivalent actinide waste (), the samples were irradiated by 7 MeV Au ions. The effects of ion irradiation on the structural and mechanical properties were followed using
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Effects of radiation damage on GaN epitaxial layer arising from argon ion implantation for edge termination Nucl. Instrum. Methods Phys. Res. Sect. B Beam Interact. Mater. Atoms (IF 1.3) Pub Date : 2024-03-01 Meng-Yu Chen, Der-Sheng Chao, Jenq-Horng Liang
To suppress the electric-field crowding at the edge of GaN-based power devices and enhance the breakdown voltage as well, argon ion (Ar) implantation has been demonstrated an efficient process of edge termination for n-type GaN, that is realized by the introduction of radiation-induced defects to modify electric-field distribution around the edge of devices. However, a high fluence of Ar irradiation
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Diffusion method of determination of the thermal pulse duration upon quenching of surface layers of steel articles Nucl. Instrum. Methods Phys. Res. Sect. B Beam Interact. Mater. Atoms (IF 1.3) Pub Date : 2024-03-01 V.B. Vykhodets, T.E. Kurennykh, B.R. Gelchinsky
Industrial technologies that employ fast heating and cooling of surface layers of articles for their hardening are widely applied nowadays. For many steel grades, the duration of thermal pulse should be less than 1 ms. Data on the experimental determination of this technological parameter are lacking; therefore, in the work presented, a method is proposed that serves to solve this task via investigation
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Assessment of primordial radionuclides and radon exhalation in granitic terrain of Bengaluru, India Nucl. Instrum. Methods Phys. Res. Sect. B Beam Interact. Mater. Atoms (IF 1.3) Pub Date : 2024-02-28 C.G. Poojitha, B.K. Sahoo, K.E. Ganesh, Rama Prajith, D.H. Kumbhar, B.K. Sapra
This study delves into an investigation of primordial radionuclides and radon exhalation potential in natural soil and rock samples collected from the granitic terrain of Bengaluru, Karnataka, India. Employing a Smart RnDuo monitor and HPGe-based gamma spectrometry, the analysis reveals significantly elevated average specific radium, thorium, and potassium activities compared to the global averages
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Properties of irradiated Bi2O3 and TiO2 enriched 3D printing polymers for fabrication of patient specific immobilization devices in radiotherapy Nucl. Instrum. Methods Phys. Res. Sect. B Beam Interact. Mater. Atoms (IF 1.3) Pub Date : 2024-02-28 Antonio Jreije, Neringa Keršienė, Paulius Griškevičius, Diana Adlienė
The main objective of this work was to investigate the radiation hardness and mechanical properties of newly developed 3D printing polymer acrylonitrile butadiene styrene (ABS) enriched with BiO and TiO for its possible application for the manufacturing of patient-specific immobilization masks in radiotherapy.
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Exploring the impact of gamma rays and electron beam irradiation on physico-mechanical properties of polymers & polymer composites: A comprehensive review Nucl. Instrum. Methods Phys. Res. Sect. B Beam Interact. Mater. Atoms (IF 1.3) Pub Date : 2024-02-26 Neha Bansal, Sanjiv Arora
Ionizing radiations are a unique and powerful means of modifying physico-mechanical properties of various polymers and composites. Modification of properties by irradiation technique has become a pioneer area of research due to its extraordinary results and toxic-free route. Many studies revealed that radiations act differently on polymers and composites. At the optimal radiation dose; various mechanical
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Measurement of nuclide production cross sections for GeV-region proton-induced reactions on natMg, natSi, natFe, natCu, and natZn Nucl. Instrum. Methods Phys. Res. Sect. B Beam Interact. Mater. Atoms (IF 1.3) Pub Date : 2024-02-26 K. Sugihara, S. Meigo, H. Iwamoto, F. Maekawa
Nuclide production cross sections for proton-induced reactions on Mg, Si, Fe, Cu, and Zn at several GeV were measured using an activation technique at Japan Proton Accelerator Research Complex. The aggregate results of 250 cross sections were successfully acquired. The cross sections of the Fe(p,X)Sc, Zn(p,X)Na, Zn(p,X)Mg, Zn(p,X)Sc, and Zn(p,X)Zn reactions were acquired for the first time. The cross
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Gamma-ray irradiation-induced changes in structural, optical and photo-emission characteristics of PVA/PEG blends Nucl. Instrum. Methods Phys. Res. Sect. B Beam Interact. Mater. Atoms (IF 1.3) Pub Date : 2024-02-24 M.F. Zaki, Y.H. Elshaer
This study looked at the resultant influence by γ-radiation upon the structural changes, optical and photoemission characteristics in blends of poly-vinyl-alcohol/poly-ethylene–glycol. The PVA/PEG blend films are fabricated using a blending and casting method with a 50/50 ratio. The dried films were exposed to various γ doses 30, 60, 90, and 120 kGy. The effects of γ-rays upon the properties of the
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In-situ observation of radiation-induced defects in ZrN under electron irradiation in HVEM Nucl. Instrum. Methods Phys. Res. Sect. B Beam Interact. Mater. Atoms (IF 1.3) Pub Date : 2024-02-24 M.M. Rahman, T. Yamamoto, S. Matsumura, S. Takaki, M. Takano, J.M. Costantini, K. Yasuda
ZrN is a promising material for inert matrix fuel and transmutation targets in advanced nuclear applications. The nucleation-and-growth process of radiation-induced defects in zirconium nitride (ZrN) has been investigated under electron irradiation by using a high voltage transmission electron microscope (HVEM) under the production of isolated Frenkel defects for both Zr and N atoms. Electron irradiation
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The influence of laser fluences on surface properties, plasma formation, and microhardness of Mg-alloy Nucl. Instrum. Methods Phys. Res. Sect. B Beam Interact. Mater. Atoms (IF 1.3) Pub Date : 2024-02-24 Ambreen Ayub, Asadullah Dawood, Sara sultan, Faisal Z. Duraihem, Qaiser Malik, Muhammad Javed, Muhammad Asad Khan
The impact of variation in laser fluence on the surface modifications and plasma parameters of biocompatible, Magnesium (Mg) alloy has been studied. A 1064 nm Nd: YAG laser with, 10 ns pulse duration and a repetition rate of 1 to 10 Hz has been used for this purpose. Mg-alloy targets were subjected to fluences ranging from 1.3 to 10.47 in Argon (Ar) ambient. The surface morphology of irradiated targets
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Ionization cross sections of water clusters as an alternative to liquid phase water: A Geant4-DNA simulation study Nucl. Instrum. Methods Phys. Res. Sect. B Beam Interact. Mater. Atoms (IF 1.3) Pub Date : 2024-02-23 Z. Alfaytarouni, P.-A. Hervieux, C. Dal Cappello, G. Noel, Z. El Bitar
Most of Monte Carlo Simulation (MCS) toolkits used to estimate the biological damage induced by radiations in cells consider these latter as composed of single water molecule. In this work, we used the Geant4-DNA MCS toolkit to evaluate the biological damage in cells modeled as clusters of water molecules instead of single water molecule. Increasing the number of molecules in water clusters enable
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Optical and scintillation properties of (ClPEA)2PbCl4 crystals forming quantum well structures Nucl. Instrum. Methods Phys. Res. Sect. B Beam Interact. Mater. Atoms (IF 1.3) Pub Date : 2024-02-22 Shun Matsuzawa, Kai Okazaki, Daisuke Nakauchi, Naoki Kawano, Takeru Suto, Takumi Kato, Noriaki Kawaguchi, Takayuki Yanagida
(n-ClCHCHNH)PbCl ((n-ClPEA)PbCl) (n = 2, 3, and 4) and (n-CHCHNH)PbCl ((PEA)PbCl) crystals were synthesized by the slow-cooling method, and the photoluminescence (PL) and scintillation properties were evaluated. All the samples showed self-trapped excitons luminescence at 400–700 nm. The PL quantum yields of the (n-ClPEA)PbCl (n = 2, 3, and 4) and (PEA)PbCl crystals were 2.2, 0.9, 11.2, and 2.2 %,
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Machine learning predictions for cross-sections of 43,44Sc radioisotope production by alpha-induced reactions on Ca target Nucl. Instrum. Methods Phys. Res. Sect. B Beam Interact. Mater. Atoms (IF 1.3) Pub Date : 2024-02-22 Serkan Akkoyun, Cafer Mert Yeşilkanat, Tuncay Bayram
Sc radioisotopes are an alternative to F in positron emission tomography. Sc radioisotopes, which can be generated at low costs by irradiating inexpensive natural Ca with alpha particles, can be produced, and distributed in a central cyclotron facility due to their relatively long half-lives. Since there is limited experimental data on the cross-sections in the literature, in this study, cross-section
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Dependence of radiation-induced conductivity and electrical degradation of silicon carbides on ionizing dose rates Nucl. Instrum. Methods Phys. Res. Sect. B Beam Interact. Mater. Atoms (IF 1.3) Pub Date : 2024-02-19 B. Tsuchiya, K. Kataoka, R. Terasawa, S. Yamamoto, S. Ito
The dynamic radiation effects on the electrical properties of chemical-vapor-deposited silicon carbides (CVD-SiCs) were investigated in situ under gamma-ray irradiation at various ionizing dose rates of 0.52–5.9 Gy/s at room temperature in air. The initial rapid increase in the electrical conductivity occurred because of electronic excitation at a rate proportional to the ionizing dose rates. The base
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Neutron spectra from photonuclear reactions: Performance testing of Monte-Carlo particle transport simulation codes Nucl. Instrum. Methods Phys. Res. Sect. B Beam Interact. Mater. Atoms (IF 1.3) Pub Date : 2024-02-17 V. Blideanu, C. Besnard-Vauterin, D. Horváth, B. Lefebvre, F. Salvat-Pujol, R. Versaci
The production of neutrons in photon-induced nuclear reactions in the giant-dipole-resonance energy domain remains a topic of high interest for various applications, including the activation and decommissioning of electron accelerator facilities, the detection of illicit materials for homeland security, and the evaluation of neutron dose received by patients during radiotherapy treatments. General-purpose
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The irradiation resistance and mechanical properties of the high-entropy zirconate pyrochlore (La0.2Nd0.2Sm0.2Eu0.2Gd0.2)2Zr2O7 Nucl. Instrum. Methods Phys. Res. Sect. B Beam Interact. Mater. Atoms (IF 1.3) Pub Date : 2024-02-17 Zezhen Wang, Liangfu Zhou, Chenguang Liu, Yuhong Li
ABO (A = Y, La-Lu, B = Sn, Ti, Zr, Hf, etc.) pyrochlore oxide ceramics, with their flexible structure and complex chemical composition, are naturally stable and serve as an effective carrier matrix for immobilizing various nuclides found in high-level nuclear waste (HLW). However, there are many kinds of nuclides in HLW, which need to be immobilized simultaneously. Using ABO pyrochlore to immobilize
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Structure of nanoparticles in amorphous SiO2 by sequential implantation with Co and Ag ions Nucl. Instrum. Methods Phys. Res. Sect. B Beam Interact. Mater. Atoms (IF 1.3) Pub Date : 2024-02-16 S. Matsuo, A. Iwase, T. Matsui, R. Yagura, T. Yamada, N. Taguchi, S. Tanaka, S. Semboshi, F. Hori
The properties of nanoparticles depend not only on their size and shape, but also on crystalline phase and structure. In the present research, we have investigated the structure and optical properties of nanoparticles synthesized by the sequential implantation with 200 keV Co and 380 keV Ag ions at room temperature into amorphous SiO. For comparison, Co single ion and Ag single ion implanted samples
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Investigation of the synergistic effects on 4H-SiC junction barrier Schottky Diodes after multiple irradiation Nucl. Instrum. Methods Phys. Res. Sect. B Beam Interact. Mater. Atoms (IF 1.3) Pub Date : 2024-02-15 Mu He, Xiaoping Dong, Meiju Xiang, Yao Ma, Mingmin Huang, Sijie Zhang, Qingkui Yu, Shuang Cao, Zhongyu Lu, Yun Li, Zhimei Yang, Min Gong
In this work, the irradiation effects of 1200 V commercial silicon carbon (SiC) Junction Barrier Schottky Diodes (JBSs) were thoroughly studied at multiple irradiation conditions by choosing the typical energy and flux of heavy ions (HIs) and electrons. The electrical properties were measured and the relevant electrical parameters were extracted. It was demonstrated that heavy ion irradiation induced
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Effect of ion irradiation after platinum nanoparticles deposition onto glassy carbon substrates on microstructural evolution and oxygen reduction reaction activities Nucl. Instrum. Methods Phys. Res. Sect. B Beam Interact. Mater. Atoms (IF 1.3) Pub Date : 2024-02-15 Tomitsugu Taguchi, Shunya Yamamoto, Hiroshi Koshikawa, Hiroyuki Okazaki, Akira Idesaki, Tetsuya Yamaki
The effect of Ar-irradiation after platinum nanoparticles (PtNPs) deposition onto glassy carbon (GC) substrates on microstructural evolution and oxygen reduction reaction (ORR) activities of the Pt oxygen-reduction electrocatalyst was investigated in this study. The microstructural developments of PtNPs on GC substrates before and after the ion irradiation were evaluated by transmission electron microscopy
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Defect formation simulated by track structure calculation model Nucl. Instrum. Methods Phys. Res. Sect. B Beam Interact. Mater. Atoms (IF 1.3) Pub Date : 2024-02-15 Tatsuhiko Ogawa, Yosuke Iwamoto
A method to calculate DPA cross sections of arbitrary materials exposed to protons, neutrons and ions using a track structure calculation model is developed. This method was applied to calculate the DPA cross section of copper irradiated by protons and neutrons for benchmarking. The calculation reproduced the earlier measurement data from 1 to 1000 MeV ranging 3 orders of magnitude within a factor
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The role of stopping layer and conversion structure on fast neutron imaging Nucl. Instrum. Methods Phys. Res. Sect. B Beam Interact. Mater. Atoms (IF 1.3) Pub Date : 2024-02-14 Lei Wan, Faguo Chen, Deyuan Li, Wenhao Su, Hong Lin, Shenshen Hou, Yanling Guo, Lin Chen, Ximeng Chen
Fast neutron imaging offers unique advantages in the non-destructive detection of large volume samples. We have proposed a novel method to enhance the spatial resolution and detector efficiency of fast neutron imaging detectors by adding a stopping layer and conversion array. In the Geant4 simulation, incorporating a 300 μm thick boron carbide stopping layer behind the conversion layer can enhance
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Simulation of the dynamical transmission of 100 eV positrons through a conical capillary Nucl. Instrum. Methods Phys. Res. Sect. B Beam Interact. Mater. Atoms (IF 1.3) Pub Date : 2024-02-12 Aixiang Yang, Dianwei Zhou, Chengzhi Han, Ximeng Chen, Jianxiong Shao
The simulation of 100 eV positrons transmitted in conical capillary was performed with inserted beam intensity from 0.04 fA/mm to 10 fA/mm. At lower injected intensity of sub-fA, the transmission profile is geometrical and dominated by direct transmission. As the tilt angle increases, the intensity of the transmitted positron decreases rapidly, which is consistent with the experimental data. After
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Comparison Of Alpha and X-ray Irradiation Effects in nMAG Polymer Gels Used for Dosimetry Applications Nucl. Instrum. Methods Phys. Res. Sect. B Beam Interact. Mater. Atoms (IF 1.3) Pub Date : 2024-02-10 M. Merkis, D. Vajauskas, J. Laurikaitienė, B.G. Urbonavičius, G. Stankūnas, B. Togobickij, B. Abakevičienė, D. Adlienė
Due to the lack of suitable dosimeters, experimental dosimetry of particle radiation is poorly explored and relies on numerical models, rather than on the experimental results. To address the problem, radiation-induced changes of nMAG dosimetric gel properties have been analyzed using the radiopharmaceutical Ra dichloride as an alpha particle source. Irradiated nMAG dosimetric gels indicated around
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The effect of modified Tin oxide on X-ray attenuation: An experimental and theoretical study Nucl. Instrum. Methods Phys. Res. Sect. B Beam Interact. Mater. Atoms (IF 1.3) Pub Date : 2024-02-09 Mahdieh Ghasemi-Nejad, Leila Gholamzadeh, Ruhollah Adeli, Seyed Pezhman Shirmardi
In this study, Graphene oxide modified SnO (GOMS) was synthesized with a chemical method. The PVC composites containing 50 wt% of SnO and GOMS were prepared. X-ray attenuation parameters were investigated. Also, composites' tensile strength, Anti-bacterial, and structure morphology were compared. The results indicated that using GOMS maintained X-ray attenuation and enhanced other properties under
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Optimization modeling of a Cs-sputter ion source for AMS of 10Be Nucl. Instrum. Methods Phys. Res. Sect. B Beam Interact. Mater. Atoms (IF 1.3) Pub Date : 2024-02-08 Xiaolei Zhao
When measuring Be at the sub-10Be/Be ratio with accelerator mass spectrometry (AMS), it is highly desirable to produce maximum BeO currents >20 μA and extract those without losses due to the geometry of the ion source. Unfortunately, this is often not the case, and experiences in measuring the same samples using different ion sources have been quite variable. Using the SO110-B and -C ion sources manufactured
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Corrigendum to “Electronic states of fluorinated DNA components revealed by X-ray photoelectron spectroscopy” [Nucl. Inst. Methods Phys. Res. B 547 (2024) 165225] Nucl. Instrum. Methods Phys. Res. Sect. B Beam Interact. Mater. Atoms (IF 1.3) Pub Date : 2024-02-08 S. Onuma, Y. Izumi, M. Ohara, A. Yokoya
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Equilibrium charge-state fractions and average charges of low-charged Hf, W and Os ions passing through He target at ion energies E = 0.5–25 keV/u Nucl. Instrum. Methods Phys. Res. Sect. B Beam Interact. Mater. Atoms (IF 1.3) Pub Date : 2024-02-07 Inga Yu. Tolstikhina, V.P. Shevelko
Equilibrium charge-state fractions and average charges are calculated for low-charged Hf, W and Os ions with the charges = 0–3 colliding with He atoms at energies = 0.5–25 keV/u. and values are obtained on the basis of electron-capture and electron-loss cross sections calculated by ARSENY and DEPOSIT codes briefly described in the paper. Calculated cross sections, and values, calculated also for other
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Low-energy O+ or SiO+ ion beam induced deposition of silicon oxide using hexamethyldisiloxane Nucl. Instrum. Methods Phys. Res. Sect. B Beam Interact. Mater. Atoms (IF 1.3) Pub Date : 2024-02-07 Satoru Yoshimura, Takae Takeuchi, Masato Kiuchi
We attempted to form silicon oxide films by spraying hexamethyldisiloxane (HMDSO) to a substrate together with low-energy O ion beam injections. The energy of O ions was 100 eV. The substrate temperature was set at room temperature. After the trial, we found a film deposited on the substrate. X-ray photoelectron spectroscopy (XPS) measurements of the film showed that the film was silicon dioxide. The
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Editorial Board Nucl. Instrum. Methods Phys. Res. Sect. B Beam Interact. Mater. Atoms (IF 1.3) Pub Date : 2024-02-06
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On violation of the Bragg’s additivity rule for single-electron capture by positive ions from H2 molecules Nucl. Instrum. Methods Phys. Res. Sect. B Beam Interact. Mater. Atoms (IF 1.3) Pub Date : 2024-02-05 F.F. Goryaev, I.Yu. Tolstikhina, V.P. Shevelko
The ratio of single-electron capture cross sections of positively charged ions colliding with H and H targets was investigated at ion energies 2 keV/amu–200 MeV/amu and ion charges using the Brinkman–Kramers approximation with normalized capture probabilities. The dependence of the ratio on the polar angle between H-molecule axis and the projectile-velocity direction was studied for angles . It was
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Study of different degradation effects in UV-sensitive polymers using xenon lamp and deuterium lamp to simulate UV irradiation in space environment Nucl. Instrum. Methods Phys. Res. Sect. B Beam Interact. Mater. Atoms (IF 1.3) Pub Date : 2024-02-05 Aekjira Kuyyakanont, Minoru Iwata
This paper describes a study of the degradation effect of vacuum-UV radiation and near-UV radiation on polymeric materials in space by using vacuum-UV and near-UV simulators. To study the degradation of polymeric material due to UV irradiation, we used four UV-sensitive polymers and investigated their UV degradation mechanism. The polymers were polyamide (PA), polycarbonate (PC), polyvinyl chloride
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Preliminary development of a dust explosion equipment for time-resolved SAXS experiment with synchrotron radiation Nucl. Instrum. Methods Phys. Res. Sect. B Beam Interact. Mater. Atoms (IF 1.3) Pub Date : 2024-02-03 Haijuan Wu, Wenmin Li, Yingfeng Sun, Zebin Zhang, Qingfeng Qin, Qingfu Han, Shujun Wei, Zhihong Li, Yixin Zhao, Xiong Cao
Dust explosion is short-lived, but dangerous. Time-resolved small angle X-ray scattering (SAXS) with synchrotron radiation is an effective method to study the microscopic dynamics of dust explosion, but it needs high beam flux, fast detector and appropriate explosion equipment. The pink beam SAXS beamline at the upcoming high energy photon source (HEPS in Beijing, China) will possess high beam flux
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Energy landscape of hydrogen in the vicinity of monovacancy in beryllium Nucl. Instrum. Methods Phys. Res. Sect. B Beam Interact. Mater. Atoms (IF 1.3) Pub Date : 2024-01-31 L. Ferry, F. Virot, Y. Ferro, M. Barrachin
The present work is devoted to fill the lack of data related to the hydrogen behavior in the vicinity of monovacancy in the hexagonal compact structure of beryllium. These data are of importance to feed coupled reaction–diffusion models dedicated to the simulation of hydrogen behavior in beryllium in order to analyze its thermal release as function of concentration and temperature. This work aims to
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Positron-annihilation lifetime spectroscopy with in-situ control of temperature, pressure and atmosphere to determine the free-volume of soft materials Nucl. Instrum. Methods Phys. Res. Sect. B Beam Interact. Mater. Atoms (IF 1.3) Pub Date : 2024-02-02 R. Helm, J. Lehtonen, M. Mayerhofer, J. Mitteneder, W. Egger, R. Verbeke, P. Sperr, G. Dollinger, M. Dickmann
We introduce a newly developed instrument for Na-based positron-annihilation lifetime spectroscopy (PALS) with in-situ temperature, pressure and atmosphere control. The system is designed for PALS measurements of samples in changing atmospheric conditions, from vacuum (∼10 mbar) up to a gas pressure of 20 MPa. Furthermore, we can select the composition of the applied gas, such as N, Ar, Ar/H, CO as
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Multi-Isotope determination of uranium-rich material using accelerator mass spectrometry Nucl. Instrum. Methods Phys. Res. Sect. B Beam Interact. Mater. Atoms (IF 1.3) Pub Date : 2024-02-01 Adam M. Clark, Austin D. Nelson, Thomas L. Bailey, Drew Blankstein, Chevelle Boomershine, Gunnar M. Brown, Peter C. Burns, Scott Carmichael, Lauren K. Callahan, Jes Koros, Kevin Lee, Miriam Matney, Anthony M. Miller, Orlando Olivas-Gomez, Michael Paul, Richard Pardo, Fabio Rivero, Daniel Robertson, Ginger E. Sigmon, William W. von Seeger, Ed Stech, Regan Zite, Philippe Collon
Environmental detection of trace isotopes U and U are important forensic signatures for identifying uranium ore materials or tracking anthropogenic releases from weapons fallout or nuclear reprocessing. Currently, Accelerator Mass Spectrometry (AMS) is the only method sensitive enough to detect signatures of U/U and U/U at the natural level due to the molecular interferences of ThH and UH, respectively
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Corrigendum to “Contribution of molecular orbital promotion to the electronic stopping cross section at slow atom solid collisions”. [Nucl. Inst. Methods Phys. Res. B (2024) 165217] Nucl. Instrum. Methods Phys. Res. Sect. B Beam Interact. Mater. Atoms (IF 1.3) Pub Date : 2024-02-01 A.N. Zinoviev, P.Yu. Babenko, V.S. Mikhailov, D.S. Tensin, A.P. Shergin
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Determination of the interaction potential for H-Au from backscattering and transmission experiments Nucl. Instrum. Methods Phys. Res. Sect. B Beam Interact. Mater. Atoms (IF 1.3) Pub Date : 2024-02-01 A.N. Zinoviev, P.Yu. Babenko, V.S. Mikhailov, D.S. Tensin, A.P. Shergin
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A model to evaluate the radiation-hardening in shallow ion-irradiated metallic materials Nucl. Instrum. Methods Phys. Res. Sect. B Beam Interact. Mater. Atoms (IF 1.3) Pub Date : 2024-01-28 Yifan Zhang, Jing Wang, Bing Ma, Qian Zhan, Laima Luo, Yucheng Wu
In this study, we propose a model to assess the nanoindentation hardness of shallow ion-irradiated materials. The new model is built upon two factors: 1) the contribution of the damage layer to indentation size effect (ISE) becomes negligible when the indentation depth surpasses a certain value; 2) the difference in the profile of the hardness between non– and ion-irradiation samples can still be approximated
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A study on the validation of a single-particle measurement system for leakage gamma-ray decay curves Nucl. Instrum. Methods Phys. Res. Sect. B Beam Interact. Mater. Atoms (IF 1.3) Pub Date : 2024-01-29 Hao Xi, Jie Wen, Meng Li, Hui Gao, Haojun Zhou, Qilin Xie, Taiping Peng
Using gamma rays as a probe has garnered increasing attention in dynamic measurement as the potential of obtaining an earlier fitting starting point and less diffusion time. We developed a single-particle measurement system based on the randomly pulsed source method. And we presented a comprehensive validation process by measuring the leakage ray decay curve of borated polyethylene samples. The system
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Alpha induced gamma emission spectroscopy for the determination of nitrogen in materials Nucl. Instrum. Methods Phys. Res. Sect. B Beam Interact. Mater. Atoms (IF 1.3) Pub Date : 2024-01-25 G.L.N. Reddy, A.A. Sukumar, Y. Sunitha, D.V. Lakshmipathy, J.V. Ramana, Sanjiv Kumar
In the present study we have standardised a methodology based on 14N(α,pγ)17O nuclear reaction for the determination of nitrogen in materials. The determination is based on the detection of the 871 keV prompt γ-rays, characteristic of the reaction, by high resolution γ-ray spectrometry. The Q value of the reaction is −1.192 MeV. The limit of quantification of the method for nitrogen in carbon and stainless
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Improvements in the PIXE system of the CENTA laboratory with application in the contamination studies of tree rings in Slovakia Nucl. Instrum. Methods Phys. Res. Sect. B Beam Interact. Mater. Atoms (IF 1.3) Pub Date : 2024-01-25 Jakub Kvasniak, Miroslav Ješkovský, Jakub Zeman, Ivan Kontuľ, Jakub Kaizer, Karol Sučák, Pavel P. Povinec
This study describes the process of calibrating the PIXE system at the CENTA laboratory in the current upgraded geometry. A constant trend of H values was observed in the energy region of 1–15 keV, with a sharp decline below 1 keV. However, bremsstrahlung intensity was significantly affected by the target orientation, causing an improvement in the detection limit by a factor of 1.5–5. Tree rings of
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Radiation hardness study of BC408 plastic scintillator under 80 MeV proton beam irradiations Nucl. Instrum. Methods Phys. Res. Sect. B Beam Interact. Mater. Atoms (IF 1.3) Pub Date : 2024-01-24 Yue Zhang, Ruirui Fan, Yuhong Yu, Hantao Jing, Zhixin Tan, Yuhang Guo, You Lv
To investigate the 1.6 GeV high-energy proton beam detector utilized in the CSNS Phase-II upgrade project, a plastic scintillator detector presents a viable option due to its superior radiation hardness. This study investigates the effects of irradiation damage on a BC408 plastic scintillator induced by 80 MeV protons, including absorption and fluorescence spectroscopy, and light yield tests of BC408
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The relationship between reinforcement ratio and e-beam irradiation in Y2O3 reinforced Al6061 Alloys: A crystallographic assessment Nucl. Instrum. Methods Phys. Res. Sect. B Beam Interact. Mater. Atoms (IF 1.3) Pub Date : 2024-01-20 Mehmet Sahin Atas
The e-beam irradiation effect is investigated on mechanically alloyed Y2O3-Al6061 composites with different reinforcement ratios (0.25, 2, 6 % wt.). Uniform dispersion of reinforcement elements in the Al matrix is achieved according to SEM and EDS analysis in conjunction with the formation of a highly dense structure. Improvement in hardness value is observed by increasing both the amount of reinforcement
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Electronic stopping in ternary material SiCN: Anomalous behavior of slow channeling helium ions Nucl. Instrum. Methods Phys. Res. Sect. B Beam Interact. Mater. Atoms (IF 1.3) Pub Date : 2024-01-03 Yan-Long Fu, Jia-Yong Zhong, Feng-Shou Zhang
By performing time-dependent density functional theory simulations, we reveal an anomalous deviation from linear low-velocity electronic stopping for slow channeling helium ions in the ternary material SiCN. We ascribe the deviation behavior that occurs upon helium ion irradiated SiCN to trapped electrons in the final stage of collision. The result show that the electron trapping for the exit-side
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Dosimetric properties of Eu-doped Ca2BO3Cl Nucl. Instrum. Methods Phys. Res. Sect. B Beam Interact. Mater. Atoms (IF 1.3) Pub Date : 2024-01-05 Tomoaki Wauke, Naoki Kawano, Takumi. Kato, Yuma Takebuchi, Hiroyuki Fukushima, Go Okada, Takayuki Yanagida
We prepared Ca2BO3Cl with different concentrations (0.1 %, 0.5 %, and 1.0 %) of Eu2O3 for radiation dosimetry. Sharp photoluminescence peaks derived from 4f → 4f transition of Eu3+ appeared at 575, 590, 610, and 645 nm. On the other hand, the Eu2O3-doped Ca2BO3Cl exhibited a broad scintillation peak at around 600 nm due to 5d → 4f transition of Eu2+, and sharp peaks at approximately 590 and 610 nm
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Changes in the hydrophilicity of the surface of PADC under ionizing radiations: Anomalous increase of the contact angle of water droplets under protons Nucl. Instrum. Methods Phys. Res. Sect. B Beam Interact. Mater. Atoms (IF 1.3) Pub Date : 2024-01-06 Tamon Kusumoto, Koji Kuraoka, Yutaka Mori, Masato Kanasaki, Satoshi Kodaira, Rémi Barillon, Tomoya Yamauchi
The contact angle of water droplets decreases above certain absorbed doses in the case of heavy ions (He, C and Kr ions). Similarly, monotonic decreases are seen due to exposures to corona discharge and UV lights. The present trends indicate that the hydrophilicity of PADC surface increases by the contribution of hydroxyl groups. In comparison, the contact angle increases due to proton irradiations
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Characteristic features of relief formation on the surface of Ni3Al and Ni3Al-TiC composites as a result of low-energy high-current electron beam irradiation Nucl. Instrum. Methods Phys. Res. Sect. B Beam Interact. Mater. Atoms (IF 1.3) Pub Date : 2023-12-28 Konstantin V. Ivanov, Kirill O. Akimov, Marina G. Figurko
Using scanning electron microscopy and roughness measurements we studied the relief appeared on the surface of TiC-free Ni3Al and Ni3Al-TiC composites (TiC content was 10 and 30 vol%) as a result of low-energy high-current electron beam irradiation (the surface energy density was in the interval of 8–18.0 J/cm2, the accelerating voltage was 30 kV, the pulse duration was 3.2 μs, the number of pulses
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Electron impact single ionization TDCS of H2O at 81 eV for coplanar asymmetric emission of electrons Nucl. Instrum. Methods Phys. Res. Sect. B Beam Interact. Mater. Atoms (IF 1.3) Pub Date : 2023-12-30 Alpana Pandey, Ghanshyam Purohit
We report the results of triple differential cross section (TDCS) for the electron impact single ionization of water molecules at incident electron energy 81 eV for coplanar asymmetric emission of electrons. The TDCS results have been obtained in distorted wave second Born approximation using orientation averaged molecular orbital (OAMO) approximation. The TDCS results have been calculated for the
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Radiation-induced luminescence properties of AEO-SiO2 (AE = Mg, Ca, Sr, Ba) glasses doped with Sn Nucl. Instrum. Methods Phys. Res. Sect. B Beam Interact. Mater. Atoms (IF 1.3) Pub Date : 2023-12-28 Yuma Takebuchi, Daiki Shiratori, Akihiro Nishikawa, Takumi Kato, Daisuke Nakauchi, Noriaki Kawaguchi, Takayuki Yanagida
Optical and scintillation properties of 50AEO-50SiO2-1SnO (AE = Mg, Ca, Sr, Ba) glasses were investigated. In photoluminescence (PL) and scintillation, the glasses showed a luminescence peak around 400 nm which was attributed to the T1-S0 transitions of Sn2+. The afterglow levels of the AE = Mg and Ba glasses were better than that of a commercial Tl-doped CsI scintillator. The light yields of the glasses
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Electronic states of fluorinated DNA components revealed by X-ray photoelectron spectroscopy Nucl. Instrum. Methods Phys. Res. Sect. B Beam Interact. Mater. Atoms (IF 1.3) Pub Date : 2023-12-30 S. Onuma, Y. Izumi, M. Ohara, A. Yokoya
To explore the applicability of fluorinated DNA components as radiosensitizing agents for cancer treatment, the electronic states of a nucleoside (FdU) and nucleotide (FdUMP) containing fluorine atom were investigated using X-ray photoelectron spectroscopy (XPS). The fluorine atoms significantly reduced the energy gap between the valence and conduction level of the nucleotide, although the core-level
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Nonthermal effects in solids after swift heavy ion impact Nucl. Instrum. Methods Phys. Res. Sect. B Beam Interact. Mater. Atoms (IF 1.3) Pub Date : 2023-12-28 N. Medvedev, R. Voronkov, A.E. Volkov
This contribution is a brief introduction to nonthermal effects related to modifications of the interatomic potential upon ultrafast excitation of the electronic system of solids, primarily focusing on the swift heavy ion track problem. We clarify the difference between the exchange of the kinetic energy of electrons (and holes) scattering on the lattice (electron–phonon coupling, “thermal effects”)
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The effect of multiple collisions on the electronic stopping losses Nucl. Instrum. Methods Phys. Res. Sect. B Beam Interact. Mater. Atoms (IF 1.3) Pub Date : 2023-12-28 A.N. Zinoviev, P.Yu. Babenko, V.S. Mikhailov
The paper considers the question of the dependence of electronic stopping dE/dx on the measurement technique. Usually, when using the transmission geometry, the value of electron stopping is defined as the ratio of the energy loss of the particle after passing through the film to the thickness of the film d. It is shown that this procedure provides overestimated results at low collision energies. Using
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Contribution of molecular orbital promotion to the electronic stopping cross section at slow atom solid collisions Nucl. Instrum. Methods Phys. Res. Sect. B Beam Interact. Mater. Atoms (IF 1.3) Pub Date : 2023-12-27 A.N. Zinoviev, P.Yu. Babenko, A.P. Shergin
The autoionization states formation due to MO promotion during collisions of keV-energy ions with solids produces a dominant contribution to inelastic energy losses and, accordingly, to the electronic stopping powers dE/dx. The correlations of emitted electron numbers δ with the values of inelastic energy losses Q are shown. When corresponding distances of closest approach are reached, the MO orbital
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Characterization of the field ionization extension for the laser ion source and trap: Measurement of the ionization potential of ytterbium Nucl. Instrum. Methods Phys. Res. Sect. B Beam Interact. Mater. Atoms (IF 1.3) Pub Date : 2023-12-22 Magdalena Kaja, Dominik Studer, Reinhard Heinke, Tom Kieck, Klaus Wendt
We report on the development and application of the Field Ionization Laser Ion Source and Trap (FI-LIST) at the RISIKO mass separator at Mainz University. The FI-LIST is an adaptation of the well-established LIST unit developed at Mainz and successfully adapted to CERN-ISOLDE. It is specifically designed for field ionization of highly excited atoms in a homogeneous electric field. To assess the performance
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X-ray photoemission and absorption spectroscopy of a hypervalent iodine compound, 2-iodosobenzoic acid Nucl. Instrum. Methods Phys. Res. Sect. B Beam Interact. Mater. Atoms (IF 1.3) Pub Date : 2023-12-19 Yudai Izumi, Maki Ohara, Kentaro Fujii, Akinari Yokoya, Mikako Ogawa
To apply a hypervalent iodine compound, 2-iodosobenzoic acid (IBA), to a protecting group of X-ray activated caged compounds, X-ray photoemission and absorption spectroscopy of IBA were performed. The photoemission spectrum of IBA in the valence band region included a component originating from the π*-like orbitals of I-C and I-O. Such characteristic electronic structures may cause the reactivities
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Characteristics of secondary ions and their impact on single-event upset in TMD devices under proton irradiation Nucl. Instrum. Methods Phys. Res. Sect. B Beam Interact. Mater. Atoms (IF 1.3) Pub Date : 2023-12-23 Bing Ye, Li Cai, Fafu Ni, Jian Zeng, Zhaoxi Wu, Jie Luo, Pengfei Zhai, Xiaoyu Yan, Youmei Sun, Jie Liu
Transition metal dichalcogenide (TMD) materials are emerging candidates for next-generation electronics due to their unique properties, such as high carrier mobility and on/off ratios. However, their introduction may significantly alter single-event effects (SEEs) in devices compared to traditional silicon devices. This work investigates the SEE sensitivity of TMD devices under proton irradiation using
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Ion-optical updates and performance analysis of High energy FRagment Separator (HFRS) at HIAF Nucl. Instrum. Methods Phys. Res. Sect. B Beam Interact. Mater. Atoms (IF 1.3) Pub Date : 2023-12-19 L.N. Sheng, X.H. Zhang, H. Ren, Y.J. Yuan, K. Wang, B.M. Wu, E.M. Mei, Y. Liang, Q. Hu, J. Yang, J.Q. Zhang, W. Wu, Q.G. Yao, G.D. Shen, J.C. Yang, H.J. Ong, Z.Y. Sun, M. Wang, X.H. Zhou
The High energy FRagment Separator (HFRS), a new generation in-flight radioactive separator, is under construction at the high-intensity Heavy Ion Accelerator Facility (HIAF) in China. To further optimize the separator performance and consider the manufacturing technology, the specifications of some magnetic elements of the HFRS separator have been modified from the original design reported earlier