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Synergistic effects of gamma irradiation and Delonix regia pods bio-waste on the physico-mechanical properties of recycled-polypropylene composites: A design of experiment approach Radiat. Phys. Chem. (IF 2.9) Pub Date : 2023-09-22 Neha Bansal, Geetanjali Jagdeva, Sohan Lal, Sanjiv Arora
Gamma radiation technology to modify the various characteristics and properties of natural fiber reinforced polymer composites has been utilized at a vast rate. In the present study, composites of recycled-polypropylene reinforced with bio-waste Delonix regia pods have been prepared via extrusion and injection moulding and irradiated with gamma dose. A total of 9 experiments having 3 levels (10 wt%
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Neutron spectrum optimization for Cf-252 production based on key nuclides analysis Radiat. Phys. Chem. (IF 2.9) Pub Date : 2023-09-22 Qingfei Zhao, Qingquan Pan, Lianjie Wang, Bangyang Xia, Yun Cai, Xiaojing Liu, Jinbiao Xiong
Curium targets are irradiated in high-flux reactors to produce californium-252 (Cf-252). Thermalized neutron spectrum is favorable for Cf-252 production, so traditional methods deploy moderators around the curium targets to optimize the neutron spectrum. However, using moderators alone cannot achieve fine spectrum optimization, and does not necessarily result in better Cf-252 production. We conducted
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Radiation-induced luminescence and photoluminescence properties of (K,Rb)2CuBr3 crystals synthesized by the slow cooling method Radiat. Phys. Chem. (IF 2.9) Pub Date : 2023-09-22 Keishi Yamabayashi, Kai Okazaki, Daisuke Nakauchi, Takumi Kato, Noriaki Kawaguchi, Takayuki Yanagida
(K,Rb)2CuBr3 crystals were fabricated by the slow cooling method, and their photoluminescence (PL) and scintillation properties were examined. Emission bands were observed at 350–550 nm under UV and X-ray irradiation. PL quantum yields of K2CuBr3, (K0.25,Rb0.75)2CuBr3, (K0.5,Rb0.5)2CuBr3, (K0.75,Rb0.25)2CuBr3, and Rb2CuBr3 were respectively 75.8, 71.0, 82.3, 96.9, and 96.3%. The scintillation decay
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Simulation of ranges and sputtering of low energy Helium and Argon ions irradiation on Tungsten surface Radiat. Phys. Chem. (IF 2.9) Pub Date : 2023-09-22 Ghadeer H. Al-Malkawi, Al-Montaser Bellah A. Al-Ajlony, Khaled F. AL-Shboul
The interactions of low energy He and Ar ions with pure W target were simulated by a new Monte-Carlo (MC) based computer code which was designed to insure maximum accuracy. For these irradiation systems, incident ions projected ranges in the target material, sputtering yield, and the percentage of backscattered ions at various incident energies were studied. furthermore, the effect of the angle of
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Spectrometric performance of SiC radiation detectors at high temperature Radiat. Phys. Chem. (IF 2.9) Pub Date : 2023-09-22 M.C. Jiménez-Ramos, A. García Osuna, M. Rodriguez-Ramos, E. Viezzer, G. Pellegrini, P. Godignon, J.M. Rafí, G. Rius, J. García López
In this work, we have investigated the performance of a 4H–SiC radiation sensor in the temperature range from 25 °C to 450 °C to explore its compatibility as detector of fast ion losses in plasma diagnostic of future nuclear fusion reactors. To simulate the escape of fusion-born alpha particles in D-T (deuterium-tritium) fusion plasmas, spectroscopic measurements were carried out in a vacuum chamber
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Excitation functions of proton-induced nuclear reactions on natCaCO3 up to 60 MeV Radiat. Phys. Chem. (IF 2.9) Pub Date : 2023-09-21 Arshiya Anees Ahmed, Ryszard Misiak, Mirosław Bartyzel, Bogdan Wąs, Jerzy W. Mietelski
47Sc could be used in SPECT imaging and is also suitable for targeted therapy of small tumors. Application of 47Sc is quite promising as theranostic with its diagnostic pair 44Sc or 43Sc. Excitation functions for the production of 47Sc and its accompanying impurities through proton bombardment of natural calcium carbonate (natCaCO3) targets were experimentally evaluated and compared with both previous
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Direct observation of radiation-induced graft polymerization on a polyethylene film Radiat. Phys. Chem. (IF 2.9) Pub Date : 2023-09-20 Toshinori Motegi, Masaaki Omichi, Yasunari Maekawa, Noriaki Seko
Radiation-induced graft polymerization is widely used in the synthesis of polymeric materials with various functionalities; however, the details of the reaction mechanism are still unresolved. Herein, the initial stage of the graft polymerization reaction was investigated through atomic force microscopy (AFM). We used glycidyl methacrylate (GMA) in methanol (monomer solution) and a high-density polyethylene
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Assessment of CTDI for tube voltage variations in an epoxy and polyester-resin phantoms using the platform GEANT4/GATE Radiat. Phys. Chem. (IF 2.9) Pub Date : 2023-09-17 A. Khallouqi, A. Halimi, O. El rhazouani
The objective of this investigation was to assess the computed tomography dose index (CTDI) for various tube potentials utilizing epoxy and polyester-resin phantoms, and compare the results to those obtained from a standard polymethyl methacrylate (PMMA) phantom, employing the GEANT4/GATE simulation framework. Three cylindrical phantoms with a diameter of 32 cm were simulated from epoxy resin, polyester
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Dose mapping of the 60Co gamma irradiation facility and a real irradiated product – Measurements and Monte Carlo simulation Radiat. Phys. Chem. (IF 2.9) Pub Date : 2023-09-17 Marija Majer, Luka Pasariček, Željka Knežević
A model of the 60Co gamma irradiation facility in Croatia has been developed using the Monte Carlo code PHITS for particle transport. For the high dose rate area (i.e. inside the source rack), the calculated dose rate distribution was compared with the measurements performed with the chemical ethanol-chlorobenzene dosimeters and good agreement was observed with a relative difference of up to 6%. For
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Macroscopic and microscopic investigation of maximum effectiveness of proton-boron capture therapy using Monte Carlo simulation Radiat. Phys. Chem. (IF 2.9) Pub Date : 2023-09-20 Zahra Ahmadi Ganjeh, Mohammad Amin Mosleh-Shirazi
Proton-boron capture therapy (PBCT) has been proposed as a new method to enhance effectiveness of proton therapy. There is, however, no consensus on its potential effectiveness. Most theoretical studies have been done at a macroscopic level. At cellular dimensions, however, the dose ratio with PBCT can be strongly favourable due to proton-boron reactions. The goal of this study was to investigate the
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Electron beam irradiation-induced co-grafting and degradation of cotton cellulose with ionic liquid Radiat. Phys. Chem. (IF 2.9) Pub Date : 2023-09-19 Xiaohan Dong, Zhiyan Chen, Keyan Sheng, Lei Zhu, Jiang Huang, Yanlong Gu
We developed a cellulose upgrading method based on electron beam processing technology by using a carbon-carbon double bond-containing ionic liquid as an auxiliary reagent. The irradiation of cellulose was implemented by a 10 MeV high-energy electron accelerator or a 200 keV low-energy electron accelerator. The established method enabled grafting of the ionic liquid onto cellulose while triggering
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Investigating the suitability of newly developed epoxy-based equivalent tissues for newborn and 5-year-old in paediatric radiology Radiat. Phys. Chem. (IF 2.9) Pub Date : 2023-09-19 Nabeel Ibrahim Ashour, Muhammad Fahmi Rizal Abdul Hadi, Nurul Ab. Aziz Hashikin, Mohammed Ali Dheyab, Ahmed Sadeq Musa, Nik Noor Ashikin Nik Ab Razak, Mohd Zahri Abdul Aziz
The varied radiological applications of tissue equivalent (TE) materials encompass quality checks, diagnostic imaging, and dose evaluations. However, the availability of compounds representing paediatric patient tissues for scientific use in lower diagnostic photon energy spectra is limited. In this study, several TE substitutes were developed to replicate the radiographic characteristics of neonatal
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B2O3–P2O5–CaO bioactive glasses: Synthesis, physical properties, optical basicity, electronegativity and radiation attenuation competence Radiat. Phys. Chem. (IF 2.9) Pub Date : 2023-09-16 Hanan Al-Ghamdi, Norah A.M. Alsaif, A.A. El-Hamalawy, Emad M. Ahmed, M.S. Sadeq, Y.S. Rammah
Seven bioactive glasses in the system (50-x) B2O3–4P2O5–26CaO–20Na2O-xZnO: (x = 0–15 mol%) have been produced using melt quenching route. The prepared samples coded as BG1-BG7. The physical properties, average optical basicity, electronegativity, electronic polarizability, and radiation attenuation competence of the BG1-BG7 glasses have been examined. Non-crystalline state of samples confirmed via
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Synthesis of Bi2O3 doping powder from CRT-screen waste glass: Physical, structural, and radiation attenuation properties Radiat. Phys. Chem. (IF 2.9) Pub Date : 2023-09-18 Beriham Basha, Mine Kirkbinar, Khadijah Mohammedsaleh Katubi, Erhan İbrahimoğlu, Fatih Çalişkan, I.O. Olarinoye, Halil Arslan, Sultan J. Alsufyani, M.S. Al-Buriahi
The physical, structural, mechanical, and radiation (gamma photon and neutron) shielding properties of CRT screen glass and Bi2O3 mixtures are presented in this study with the aim of adopting them as cheap, transparent, and environmentally safe glass shields for radiation protection purposes. Bi2O3-doped CRT screen glass samples are prepared by the ball milling and cold press methods and coded as TVS
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A novel approach for constructing the calibration curve applied in determining the thickness of different types of materials Radiat. Phys. Chem. (IF 2.9) Pub Date : 2023-09-17 Huynh Dinh Chuong, Le Thi Ngoc Trang, Nguyen Thi Truc Linh, Truong Thanh Sang, Phan Ngoc Linh, Hoang Duc Tam
A solution using a gamma-ray beam to measure the thickness of materials with different elemental composition is necessary as this issue has not been previously addressed. Traditionally, a linear calibration curve is only utilized to determine the thickness of a specific material. This means that multiple separate calibration curves must be used when measuring the thickness of different types of materials
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Irradiated fig pomace pyrochar as a promising and sustainable sterilized sorbent for water pollutant removal Radiat. Phys. Chem. (IF 2.9) Pub Date : 2023-09-17 Đurica B. Katnić, Slavica J. Porobić, Ivica Vujčić, Marija M. Kojić, Tamara Lazarević-Pašti, Vedran Milanković, Milena Marinović-Cincović, Dragana Z. Živojinović
Irradiated fig pomace pyrochar (IrrPyrFP) is noteworthy as a novel sterilized low-cost sorbent of BTEX, pesticides, and Pb2+ ions. It was produced by applying pyrolysis treatment followed by gamma irradiation modification in order to obtain a highly efficient and sterile sorbent. The characterization of fig pomace before and after pyrolysis, as well as before and after irradiation of the obtained pyrochar
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Evaluation of the cross section data for the low and medium energy cyclotron production of 77Br radionuclide Radiat. Phys. Chem. (IF 2.9) Pub Date : 2023-09-17 N. Amjed, N. Kaleem, A.M. Wajid, A. Naz, I. Ahmad
77Br (T1/2 = 57 h) is an important auger electron emitter used in internal radiotherapy. For the cyclotron production of 77Br, the charged particle induced reactions namely 75As(α,2n)77Br, 77Se(p,n)77Br, 78Se(p,2n)77Br, and 80Se(p,4n)77Br were critically evaluated. Literature experimental data were normalized according to the modern standard of the decay data and monitor reactions. Three nuclear model
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Research on the production of 99mTc and 99Mo using multi-layer targets at APEP Radiat. Phys. Chem. (IF 2.9) Pub Date : 2023-09-17 Qifan Dong, Hantao Jing, Wenlin Li, Zhixin Tan
One of the most effective methods for producing radioisotopes aimed at Nuclear Medicine applications, such as 99mTc and 99Mo, is to use a compact proton accelerator located near hospitals. Target utilization efficiency is a critical factor in the production of these isotopes, through the 100Mo(p, 2n)99mTc and 100Mo(p, pn)99Mo nuclear reaction routes. To maximize the utilization efficiency, a multi-layer
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Microdosimetric analysis of monoenergetic electrons and beta-emitting radionuclides based on mesh-type cell models and RBE prediction Radiat. Phys. Chem. (IF 2.9) Pub Date : 2023-09-16 Xianghui Kong, Yidi Wang, Wenyue Zhang, Xinlei Li, ChuanSheng Du, YuChen Yin, Huiyuan Xue, Han Gao, Tao Wu, Liang Sun
Aims Microdosimetric indicators are commonly used to describe the energy deposition characteristics of ionizing radiation at the subcellular and DNA levels to predict radiation-induced biological effects. Monoenergetic electrons and beta-emitting radionuclides (β nuclides) have a certain range in low-density media, and their microdosimetric indicators in the cell nucleus are of great significance for
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Computation of gamma-ray buildup factors for (25-x)CaF2-xAl2O3–15Bi2O3–59B2O3–CuO glasses Radiat. Phys. Chem. (IF 2.9) Pub Date : 2023-09-15 Faisal Almisned
High energetic gamma rays are used in different fields and thus it may cause high risks for public if it is absorbed over limited dose. In order to be protected from these hazardous effect of radiation, the shielding is an effective ways and this requires shielding materials. For this purpose the gamma radiation shielding parameters for four different types glasses which was formulated as (25-x)Ca
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Structural and gamma-ray attenuation of mixed former lead-free borophosphate glasses Radiat. Phys. Chem. (IF 2.9) Pub Date : 2023-09-14 A.M. Abdelghany, H.A. El-Batal, F.M. EzzEl-Din, N. ElAlialy, A. Okasha, D. Atta, A.M. Ismail, M. Abdelbaky, M.A. Aboelwafa, W. Awad
Sodium borophosphate parent glass in conjugation with other derived samples containing adaptable amounts of bismuth oxide at the expense of phosphate partner was prepared via the ordinary melt-quenching technique. Synthesized samples were investigated using Fourier transforms infrared (FTIR) spectroscopy. The undercover or overlapped peaks were estimated using the deconvolution analysis technique (DAT)
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Exploring a monotonically non-decreasing behavioral function on shielding properties and transmission factors in borosilicate glasses through heavy metal oxide reinforcement Radiat. Phys. Chem. (IF 2.9) Pub Date : 2023-09-07 Ghada ALMisned
In this study, the gamma-ray attenuation properties and transmission factors of different types of glasses formed in the (B2O3)x[(ZnO)0.60-(SiO2)0.40]1-x system as a function of increasing heavy metal oxide ratio were investigated. For transmission factor and absorption coefficient calculations, the general-purpose Monte Carlo code MCNPX (2.7.0) was used. In addition, the Phy-X/PSD code is used to
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Effect of gamma irradiation and evaporation on physicochemical, antibacterial, and antioxidant activity of selected high-quality herbal honey Radiat. Phys. Chem. (IF 2.9) Pub Date : 2023-09-06 Teguh Wahyono, Ashri Mukti Benita, Indra Mustika Pratama, Gumelar Retno Palupi, Hasmo Sadewo, Hari Hariadi, Mohammad Miftakhus Sholikin, , Shinta Aviyani, Ema Damayanti
This study was conducted to evaluate the influence of evaporation and gamma irradiation on physicochemical characteristics, antibacterial properties, and antioxidant activity of selected high-quality herbal honey (SH3), an Indonesian traditional herbal medicine recipe. Treatments consisted of untreated sample, evaporated SH3, irradiated SH3, and evaporated-irradiated SH3. Gamma irradiation dose of
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Boron containing polyvinyl alcohol/ polyethylene oxide/polyvinyl pyrrolidone composites: Preparation, characterization, gamma radiation shielding and gamma radiation effect on it's thermal properties Radiat. Phys. Chem. (IF 2.9) Pub Date : 2023-09-06 Fehmi Saltan, Kamil Şirin, Selim Aydın, Caner Taşköprü, Yeliz Yıldırım
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Electron spin resonance and optically stimulated luminescence chronology of the Sanggan River terraces in the Nihewan Basin, North China Radiat. Phys. Chem. (IF 2.9) Pub Date : 2023-09-04 Wenpeng Li, Hao Ji, Chunru Liu, Chuanyi Wei, Huili Yang, Gongming Yin
The chronology study of river terraces is important to reconstruct the history of regional climate change and tectonic uplift. Due to greater signal dose saturation levels, electron spin resonance (ESR) dating became as a potentially powerful tools for the chronology of Middle Pleistocene terraces. In this study, two profiles of terrace fluvial sediments from the Sanggan River Canyon were dated using
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Investigation in dosimetric properties of α-Al2O3 luminescence dosimeters for diagnostic radiology energy range Radiat. Phys. Chem. (IF 2.9) Pub Date : 2023-09-04 Jalil Pazhuhish, Eren Şahiner
In this study, the TL dosimetric properties of α-Al2O3:C dosimeters were investigated within the diagnostic radiology energy range, using different radiation sources (beta, gamma, and X-ray). The TL glow curve kinetic parameters of the dosimeter were calculated using different methods such as initial rise, fractional glow, various heating rates and numerical methods of computerized glow curve deconvolution
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Radiation transmittance of aluminum/silicon matrix functionally graded hybrid composites reinforced with B4C/TiO2 Radiat. Phys. Chem. (IF 2.9) Pub Date : 2023-08-30 Zübeyde Özkan, Uğur Gökmen
Radiation transmittance properties of the functionally graded hybrid composite material with B4C + TiO2 at various proportions were analyzed using the Phy-x/PSD software. The parameters of mass attenuation coefficient and linear attenuation coefficient, tenth-value layer and half-value layer, mean free path, effective atomic number, exposure building factor, electron density, fast neutron removal cross-section
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Development of environmentally friendly soft contact lenses made from cellulose-derived hydrogel materials Radiat. Phys. Chem. (IF 2.9) Pub Date : 2023-08-30 Akihiro Hiroki, Atsushi Kimura, Mitsumasa Taguchi
With the performance improvement of soft contact lenses (SCLs) over the past few decades, their global use and market have steadily expanded. Consequently, contamination by disposable SCLs has become a potential threat to the environment. From the perspective of sustainable development goals, overcoming this issue requires the development of new biodegradable SCL materials based on plant-derived cellulose
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Correlation between figure of merit function and deviation in the assessment of kinetic parameters in realistic TLD-100 behavior using fully-connected neural networks Radiat. Phys. Chem. (IF 2.9) Pub Date : 2023-09-01 A. Romero-Salido, F.M. Olmedo, J. Berenguer-Antequera, V. Correcher, J.F. Benavente
In this study, a realistic model was employed to research the LiF:Mg:Ti behavior (commercially known as TLD-100), a widely employed as thermoluminescent (TL) material in dosimetry services. The research was focused on exploring the association between the Figure of Merit (FOM) function and deviations from the true kinetic parameter values, that were obtained through fitting experimental measures. FOM
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Development of ionic polymer metal composite actuator by EB graft-polymerization Radiat. Phys. Chem. (IF 2.9) Pub Date : 2023-08-30 Ayana Terui, Rei Takenaka, Daiki Kawaguchi, Ayano Mino, Yuka Nakazawa, Haruna Endo, Kota Iga, Masakazu Washio, Akihiro Oshima
Ionic polymer-metal composites (IPMC) actuators were fabricated by applying ionic exchange groups such as sulfonic acids and carboxylic acids using EB graft-polymerization to two types of fluorine-based copolymers (Poly (tetrafluoroethylene-co-hexafluoropropylene): FEP and Poly (ethylene-co-tetrafluoroethylene): ETFE) as base materials, and then forming electrodes with Pt-Pd by sputtering. The physical
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Risk factors for eye lens opacity in nuclear medicine workers – An overview Radiat. Phys. Chem. (IF 2.9) Pub Date : 2023-09-04 Eleonora Nicolai, Małgorzata Wrzesień
Workers occupationally exposed to ionizing radiation, including nuclear medicine workers, are one of the groups at higher risk of a radiation cataract. Reducing the lens dose limit from 150 mSv/year to 20 mSv (averaged over defined periods of 5 yrs, or 50 mSv in 1 yr) makes other risk factors less obvious. The presented work is a review of the literature not only in the scope of the most obvious risk
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The effects of heat treatment on the OSL signal in sodium chloride crystals Radiat. Phys. Chem. (IF 2.9) Pub Date : 2023-09-01 C.P. Fernandes, R.R. Rocca
Luminescence studies focusing on sodium chloride crystals have been conducted in various parts of the world, including Brazil, India, Greece, Türkiye, Australia, Spain, and Poland. This material shows great promise in the field of dosimetry, as it has demonstrated high sensitivity, excellent reproducibility, a linear response, and a low minimum detectable dose. Moreover, it holds significant potential
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Scattering of electrons with aqueous biomaterials Radiat. Phys. Chem. (IF 2.9) Pub Date : 2023-09-01 Smruti Parikh, Dhaval Chauhan, Nirav Thakkar, Chetan Limbachiya
The aqueous phase of DNA, which is more realistic phase due to the presence of H-bonds is studied in this work for various molecular processes upon electron impact. We report computed probabilities of various interaction processes taking place during the collision of electrons with DNA molecules, viz., Adenine, Guanine, Cytosine, Thymine and Uracil in their aqueous phase. Modified spherical complex
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Radiation-chemical reduction of Tl+ ions in aqueous solutions of alcohols Radiat. Phys. Chem. (IF 2.9) Pub Date : 2023-08-28 B.G. Ershov, G.L. Bykov
Irradiation of deaerated aqueous solutions containing Tl2SO4 and alcohols (CH3OH, C2H5OH, or (CH3)2СНOH) with accelerated electrons results in the formation of a colloidal solution of the metal, which gradually coagulates to form a microporous precipitate. The metal formation efficiency increases in going from CH3OH to C2H5OH and then to (CH3)2СНOH and with increasing pH of the solutions from 4.5 to
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Surface mount multilayer ceramic capacitors as optically stimulated luminescent dosimeters Radiat. Phys. Chem. (IF 2.9) Pub Date : 2023-08-30 Madhusmita Panda, Shailesh Joshi, O. Annalakshmi, C.V. Srinivas, B. Venkatraman
The choice of dosimetric materials for precise retrospective dose assessment in case of any emergencies is very challenging. Since few decades, electronic components like ceramic resistors, inductors, IC chips, surface mount resistors and inductors have been proven to be suitable candidates for dose estimation using thermoluminesce (TL)/optically stimulated luminescence (OSL) techniques. In this work
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Recombination centres' competition impact on the OSL dose-response curve determined by the procedure with sensitivity correction Radiat. Phys. Chem. (IF 2.9) Pub Date : 2023-08-30 Natalia K. Pawlak, Alicja Chruścińska
The shape of the dose-response curve (DRC) of the OSL signal in the high dose range limits the dating range. No agreement between natural and laboratory DRC for doses close to saturation is indicated in OSL dating using quartz. The natural curve rises slower to a saturation level that is clearly lower than the saturation level of the laboratory curve. The latter is often a sum of a single saturating
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A preliminary appraisal for utilizing abandoned industrial side streams as alternatives to cement within radiation protection applications Radiat. Phys. Chem. (IF 2.9) Pub Date : 2023-08-26 Recep Kurtulus, Cansu Kurtulus
Recently, there has been arising a severe alert regarding climate crisis all over the world. As industrial production capacities have been soaring every passing day, the primary sources of the earth's crust have been depleting like there is no tomorrow. Sustainable and greener suggestions should be followed to overcome the upcoming catastrophic climate change. With this motivation, cement material
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Elastic, mechanical, and radiation shielding behaviors of copper-phosphate binary-glasses with diverse copper valence-states: R(Cu+)=Cu+/(Cu++Cu++) Radiat. Phys. Chem. (IF 2.9) Pub Date : 2023-08-28 F. Afaneh, Hanan Al-Ghamdi, Norah A.M. Alsaif, R.A. Elsad, Y.S. Rammah, Z.Y. Khattari
This paper presents a comprehensive investigation of the mechanical, elastic, and radiation shielding properties of glass systems comprising yCuOx + (100-y)P2O5, where y = 45, 50, and 55 mol%, and x = 1, 2, 3, or 4, representing different copper-valence-states (i.e., R(Cu+)=Cu+/(Cu++Cu++)). Three series of copper-phosphate glasses were synthesized, and their physical properties, including density,
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Evaluation of the effect of silicone implants in a breast radiotherapy treatment: A Monte Carlo approach Radiat. Phys. Chem. (IF 2.9) Pub Date : 2023-08-30 Paula de Cássia Justino, Lucio Pereira Neves, Walmir Belinato, Rogério Matias Vidal da Silva, Cintia de Almeida Ribeiro, William de Souza Santos, Ana Paula Perini
Since 2020, breast cancer is the most common among women, and in South America, Brazil presents the highest rates. After mastectomy and breast reconstruction, commonly silicone breast implants are used to replace the removed breast tissue, and radiation therapy is performed to reduce its recurrence in the remaining tissues and nearby lymph nodes. The Monte Carlo simulation using the MCNP6.2 code accompanied
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Stabilization efficiency of graphene in γ-irradiated styrene-isoprene-styrene copolymer Radiat. Phys. Chem. (IF 2.9) Pub Date : 2023-08-30 T. Zaharescu, C. Banciu
The stabilization efficiency of reduced graphene oxide (rGO) on the γ-irradiated styrene-isoprene-styrene copolymer (SIS) matrix is studied by chemiluminescence. The relevant protection effects of polymer against oxidation are obtained, when the inorganic phase is present in low concentrations (1, 2 and 3 wt%). The values of the characteristic kinetic parameters of degradation, namely oxidation induction
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Enhanced radiation shielding performance of epoxy resin composites with Sb2O3 and Al2O3 additives Radiat. Phys. Chem. (IF 2.9) Pub Date : 2023-08-29 Reem Darwesh, M.I. Sayeed, Yas Al-Hadeethi, Heba Jamal Alasali, Jawza Sayef Alotaibi
We prepared epoxy resin composites containing Sb2O3 and Al2O3 for radiation shielding applications, such as in the fields of nuclear medicine and medical radiation for both occupational and public radiation protection. The linear attenuation coefficient (LAC) was measured by a collimated gamma radiation technique with the use of a NaI(Tl) scintillation crystal detector. The density of the prepared
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The effect of media to reduce irradiation dose in crosslinking of self-assembled molecular layers Radiat. Phys. Chem. (IF 2.9) Pub Date : 2023-08-24 Ena Pezic, Helena Mijic, Branka Mihaljevic, Katarina Marusic
The present study aims to investigate the possibility of reducing the absorbed dose required to prepare a polymer nanocoating for surface functionalization by modifying the irradiation medium. We have studied the crosslinking of elaidic acid (EA), an unsaturated trans fatty acid, on oxidised copper by gamma irradiation. Three different irradiation media were compared: water purged with N2, water purged
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Investigation of the anisotropic distribution of microdosimetric quantities in the vicinity of X-ray-irradiated gold nanoparticles Radiat. Phys. Chem. (IF 2.9) Pub Date : 2023-08-22 Jonathan Derrien, Nicolas Pauly, Jean-François Adam, Brigitte Reniers
High-Z nanoparticles incorporated in tumors have great potential to enhance radiotherapy treatments by increasing the absorbed radiation dose in the vicinity of the nanoparticle. However, current Monte Carlo simulations estimate dose enhancement metrics in 1D, neglecting the anisotropy of the energy deposition around the nanoparticle. This could have radiobiological consequences and affect treatment
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Image simulation and realism evaluation for mammography and tomosynthesis based on the detailed breast phantom Radiat. Phys. Chem. (IF 2.9) Pub Date : 2023-08-23 Jiahao Wang, Yeqi Liu, Ankang Hu, Shuoyang Wei, Tao Wu, Junli Li, Rui Qiu
The virtual image system is a key component of virtual clinical trials (VCTs) which can be utilized to evaluate and improve medical imaging devices. The main limitation of VCTs in the Chinese female breast is the lack of detailed structure in the breast model employed in the Chinese specification for testing of quality control in mammography. In this paper, based on Chinese female breast parameters
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Insights into structure and reactivity of MOFs by ambient pressure soft X-ray absorption spectroscopy Radiat. Phys. Chem. (IF 2.9) Pub Date : 2023-08-24 Alessandro Tofoni, Francesco Tavani, Luca Braglia, Valentina Colombo, Piero Torelli, Paola D’Angelo
Metal-Organic Frameworks (MOFs) are nanostructured porous materials made up by metal cations and organic linkers forming three-dimensional structures. Since their discovery, the local properties of metal centers in MOFs have often been studied with hard X-ray absorption spectroscopy that is not a surface sensitive technique. Here, we employ the ambient-pressure soft X-ray absorption spectroscopy, using
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Dosimetric analysis of beam arrangement for intensity-modulated radiation therapy in the postoperative irradiation of thymoma Radiat. Phys. Chem. (IF 2.9) Pub Date : 2023-08-22 Canan Koksal Akbas, Gokce Ucar Alveroglu, Leyla Suncak, Sule Karaman, Nergiz Dagoglu, Ethem Nezih Oral, Hatice Bilge Becerir
This study aimed to investigate the dosimetric effect of various beam arrangements (BAs), for intensity-modulated radiotherapy (IMRT) in female thymoma patients. Six-field IMRT plans with three different BAs, named IMRTCA, IMRTCS, and IMRTNC were created for each patient. The couch angles of all fields were selected at 0°, which made the fields coplanar in the axial plane in IMRTCA plans. The couch
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Optimization of pediatric brain CT protocols Radiat. Phys. Chem. (IF 2.9) Pub Date : 2023-08-23 Débora Regina Bonfleur, Danielle Filipov, Anna Luiza Metidieri Cruz Malthez
Purpose Due to the higher radiosensitivity of the tissues and the larger life expectancy in children than in adults, the present study presented the process of optimizing pediatric brain CT protocols, for the age groups 0 to 2 years, 3 to 5 years, and 6 to 12 years, evaluating the parameters of image acquisition and dose reduction, without loss of quality in image diagnostics. Methods: The CTDIvol
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Simulation study of single-event burnout in hardened GaN MISFET Radiat. Phys. Chem. (IF 2.9) Pub Date : 2023-08-25 Xin-Xing Fei, Yong Wang, Biao Sun, Jun Xing, Wei Wei, Chang-You Li
This paper presents simulation results of a single event burnout (SEB), for a hardened GaN metal-insulator-semiconductor field-effect transistor (MISFET), employing a dual channel p-type buried layer structure (DCP-MISFET). After irradiance with a heavy ion beam, the peak electric field around the gate channel was observed to move towards the drain channel. In addition, the electrons released by the
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Monte Carlo calculations of dose profiles with the ‘given profile” method and comparison with measurements Radiat. Phys. Chem. (IF 2.9) Pub Date : 2023-08-24 Suresh Poudel, Asita Kulshreshtha, Golam Abu Zakaria, Günther H. Hartmann
Measurement of complex dose distributions which typically occur in modern radiation therapy methods is demanding. One of the main difficulties arises from the volume averaging effect due to the extended size of the employed dosimeter. Although small-sized detectors such as solid state detectors are obviously best suited in such situations, ionization chambers are frequently used. The question then
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Combining X-ray Absorption and NMR spectroscopies to investigate a chemical reaction in solution Radiat. Phys. Chem. (IF 2.9) Pub Date : 2023-08-22 Francesco Tavani, Daniele Del Giudice, Marika Di Berto Mancini, Federico Frateloreto, Matteo Busato, Osvaldo Lanzalunga, Stefano Di Stefano, Paola D’Angelo
Transition metal chemistry in solution is central to key processes in biology and catalysis. Achieving accurate knowledge on the structural and electronic properties of the relevant reaction intermediates requires the use of innovative and complementary spectroscopic probes. Herein, we combine X-ray Absorption Spectroscopy (XAS) and 1H-NMR to investigate the exchange reaction between two prototypical
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Dioctyl ether radiolysis under used nuclear fuel reprocessing conditions: Foundational knowledge for the development of sacrificial ligand grafts Radiat. Phys. Chem. (IF 2.9) Pub Date : 2023-08-19 Gregory P. Horne, Ryan P. Morco, Andrew R. Cook, Stephen P. Mezyk
Radiation-induced ligand destruction and concomitant degradation product formation is unavoidable under envisioned used nuclear fuel reprocessing conditions, and ultimately limits the recyclability of a given solvent system formulation. With this in mind, a novel approach to ligand innovation for advanced separations processes is in the design of tailored “protomolecules,” which when exposed to ionizing
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Validation of a 2D dose verification systemfor intensity-modulated arc therapy Radiat. Phys. Chem. (IF 2.9) Pub Date : 2023-08-23 Ruohui Zhang, Wenwen Bai, Yulan Gao, Shiguang Wang, Weihui Zhang, Zhiwei Dong
Objective The measured dose was shown to be dependent on the angle of beam incidence and influenced by couch absorption when a 2D detector was used in a stationary phantom. The use of a 2D array (MatriXX) in combination with a solid water phantom (RW3) dose verification system was explored, which could take into account the couch absorption influences, generate correction factors (CFs) for each detector
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Experimental and simulated etched track profiles for two relativistic ions treated under different etching conditions: How to shape different track envelopes Radiat. Phys. Chem. (IF 2.9) Pub Date : 2023-08-23 E.M. Awad, E. Bebers, M. Abu-Shady, A. Habib, S. Hassan, M. Fromm
PADC polymer sheets of thickness 650 μm were exposed to normal incident high energy ions of 7 GeV Si and 17.48 GeV Ni with particle density ≈ 103 particles/cm2. Chemical etching was carried out under soft and strong etching conditions, and parameters of track diameter and cone length variation with depths were measured and recorded at successive times during the etching process, including snapshots
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Efficient and fast detection of alpha particles using CR-39 detector Radiat. Phys. Chem. (IF 2.9) Pub Date : 2023-08-22 Arshad Khan, Suha Al Qahtani, Wijdan AL- Maqbool, Tayseer I. Al-Naggar, Mohsen Alhamami, Ayman M. Abdalla
The CR-39 track detector was used to create alpha particle tracks using molten hydrated barium hydroxide (MBH). In this experiment, seventeen CR-39 plates with a thickness of 250 μm were used. For determining the bulk etch rate, the rate of the change of track dimeter of fission fragments has been used. The detectors were etched at the suitable etching conditions of MBH, and the track diameters were
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Comparison between etching techniques for solid-state nuclear track detector (CN-85) to develop alpha tracks Radiat. Phys. Chem. (IF 2.9) Pub Date : 2023-08-17 Manar Dheyaa Salim, Awsam Abdulsattar Marzaali, Hyam Khalaf, MostafaY.A. Mostafa
The present work aims to estimate and compare the etching parameters of Solid-state nuclear track detector (SSNTD) CN-85 with different etching techniques (Water bath, Ultrasound, Microwave, Oven and Plasma (Dry Etching)). CN-85 detectors were exposed in a direct contact to the sensitive face (notated face) for 15 s to alpha particles emitted from the radium-226 source (226Ra) of 4.87 MeV energy and
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Unravelling the impact of unusual heating rate, dose-response and trap parameters on the thermoluminescence of Sm3+ activated GdAl3(BO3)4 phosphors exposed to beta particle irradiation Radiat. Phys. Chem. (IF 2.9) Pub Date : 2023-08-18 G. Souadi, Ümit H. Kaynar, M. Sonsuz, S. Akça-Özalp, M. Ayvacikli, M. Topaksu, O.T. Ozmen, N. Can
The thermoluminescence of GdAl3(BO3)4 (GAB) doped with various concentrations of Sm3+ (i.e. from 0.5 to 7 wt%), prepared by gel combustion, was studied. TL glow peaks at 78 °C and 225 °C are observed. The intensity of the glow peak at 225 °C increased with a faster heating rate. To gain insight into the trap activation energies, the methods of Hoogenstraaten and Booth-Bohun-Parfianovitch were used
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Formic acid and oxalic acid degradation by gamma rays under high-alkalinity and low-oxygen-concentration conditions Radiat. Phys. Chem. (IF 2.9) Pub Date : 2023-08-18 Kazuma Kuroda, Ryo Nakabayashi, Shingo Tanaka, Daisuke Sugiyama
Radiocarbon (C-14), which is released from irradiated stainless steels, is one of the key radionuclides in radioactive waste disposed at an intermediate depth. It is important to understand the chemical species of C-14 under an intermediate-depth disposal condition (high alkalinity, low oxygen concentration, gamma-ray irradiation) for safety assessment. In this study, the stability and degradation
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Effects of electron beam irradiation on ozone-modified potato starch film Radiat. Phys. Chem. (IF 2.9) Pub Date : 2023-08-19 Bruna S. Teixeira, Nelida L. del Mastro
Functional starch-based films are promising materials being developed at different laboratories. Native and modified starches are two materials being employed for this purpose. Chemical modification of starch generally involves esterification, etherification, or oxidation of the units that make up the starch polymers. Ozone constitutes an advanced oxidation technology for starch modification. In this
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Radiation technologies: The future is today Radiat. Phys. Chem. (IF 2.9) Pub Date : 2023-08-19 Andrzej G. Chmielewski
In this journal, a paper discussing reviewing progress in radiation technology was published twenty years ago. The paper has been cited over 100 times. Nowadays written review paper is following the structure adopted in the mentioned first publication. It is a critical appraisal of the progress in the engineering of radiation sources, processing systems, technology application for sterilization, food
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Experimental low velocity proton and 28Siq+ induced X-ray production cross sections for select elements within 24 ≤ Z ≤ 83 Radiat. Phys. Chem. (IF 2.9) Pub Date : 2023-08-15 Masedi Carington Masekane, Ivančica Bogdanović Radović, Mandla Msimanga, Sabata Jonas Moloi
Particle Induced X-ray Emission (PIXE) spectroscopy is an effectively well-established analytical technique in the low projectile mass (Z < 3) regime. This is in part due to the availability of fairly accurate theoretical models of fundamental interaction parameters such as the X-ray production cross section (XPCS). Continual development of widely used theoretical models such as the ECPSSR theory with