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Converter thickness optimisation using Monte Carlo simulations of Fluorescent Nuclear Track Detectors for neutron dosimetry Radiat. Meas. (IF 2.0) Pub Date : 2024-03-16 Stefan Schmidt, Alberto Stabilini, Long-Yang J. Thai, Eduardo G. Yukihara, Oliver Jäkel, José Vedelago
Secondary neutrons generated during ion beam radiotherapy present a concern due to the potential dose deposition beyond the treatment volume, thereby elevating the risk of inducing secondary tumours. These neutrons can possess energies comparable to those of the primary ions, reaching magnitudes of several hundred MeV, posing a challenge for neutron detectors. Fluorescent Nuclear Track Detectors (FNTDs)
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Effect of alpha irradiation on the saturation characteristics of fine-grained quartz OSL Radiat. Meas. (IF 2.0) Pub Date : 2024-03-15 Junjie Zhang
A negative relationship has been reported for the characteristic saturation dose (D) of quartz optically stimulated luminescence (OSL) signal and the grain size of quartz. However, the mechanism behind this anticorrelation is not understood. Here, the natural coarse-grained quartz samples (63–90 μm, 90–125 μm) are artificially ground into fine grains and the effect of alpha irradiation on the D values
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Personnel dosimetry for the mixed beta (Kr-85)/photon (gamma, X-ray) beams using Harshaw 8814 TL dosimeters: Performance Test Applicability Study Radiat. Meas. (IF 2.0) Pub Date : 2024-03-11 S. Sholom, B. Hooda, S. Sengupta, D. Jones, N. Foster
Performance of Harshaw 8814 TL dosimeters was evaluated in the mixture of low energy beta (Kr-85, average energy 251 keV) and X-ray/gamma photon beams, when many doses obtained using existing dose calculation algorithms show a high bias. 264 TLDs were exposed at the Radiological and Environmental Sciences Laboratory to the pure Kr-85 energy beam as well as to different combinations of beta and photon
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Characterisation of a customised 4-chip Timepix3 module for charged-particle tracking Radiat. Meas. (IF 2.0) Pub Date : 2024-03-07 L. Kelleter, S. Schmidt, M. Subramanian, L. Marek, C. Granja, J. Jakubek, O. Jäkel, J. Debus, M. Martisikova
Ion-beam radiotherapy is a growing cancer treatment modality because it offers a superior dose distribution in the patient compared with conventional radiotherapy using X-rays. Thanks to their versatility, application-specific integrated circuits (ASIC) increasingly gain interest for research into ion imaging and ion-beam characterisation. Timepix3 is a hybrid semiconductor pixel detector, which offers
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Enhanced high-spatial resolution radiographic images based on COTS CMOS image sensors applied to wood dendrochronology and densitometry Radiat. Meas. (IF 2.0) Pub Date : 2024-02-28 Damian Leonel Corzi, Jose Lipovetzky, Fabricio Pablo Alcalde Bessia, Laura Baqué, Anne-Sophie Sergent, Martín Pérez, Miguel Sofo Haro, Ignacio Carlos Artola Vinciguerra, Alejandro Martinez-Meier, Guillermina Dalla-Salda, Santiago Agustín Varela, Mariano Gómez Berisso
The imaging of wood samples using X-rays for the study of dendrochronology and densitometry is predominantly conducted through analog films subsequently digitized or, in more advanced instances, with expensive flat-panel systems characterized by resolutions on the order of tenths of microns. For this reason, this work proposes as an alternative the utilization of Commercial-Off-The-Shelf (COTS) complementary
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Chasing snails: Automating the processing of EMCCD images of luminescence from opercula Radiat. Meas. (IF 2.0) Pub Date : 2024-02-27 G.A.T. Duller, H.M. Roberts
Opercula of the gastropod are composed of calcite, and are typically 2–4 mm in length. They emit a thermoluminescence (TL) signal that can be used for dose reconstruction, and spatially resolved TL data from them can be obtained using an electron multiplying charge coupled device (EMCCD). However, when multiple measurements are made of the same sample with imaging detectors such as the EMCCD, registering
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Detection of proton tracks with LiF fluorescent nuclear track detectors Radiat. Meas. (IF 2.0) Pub Date : 2024-02-27 P. Bilski, B. Marczewska, M. Sankowska, A. Kilian, J. Swakoń, Z. Siketić, P. Olko
Fluorescent nuclear track detectors based on LiF crystals were successfully applied for detection of proton induced tracks. Irradiations were performed with protons with energy ranging from 1 MeV up to about 56 MeV and for all proton energies the fluorescent tracks were observed. The tracks are not continuous, but consist of a series of bright spots. The gaps between spots tend to narrow with decreasing
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Estimating external exposure from different source geometries in soil contaminated by gamma-ray emitting radionuclides: A computational model combining Monte Carlo simulation and mathematical transformation Radiat. Meas. (IF 2.0) Pub Date : 2024-02-24 Boubaker Askri, Kaouther Bergaoui, Adel Trabelsi
A computational model is developed to estimate the external exposure to an arbitrary scenario describing the spatial distribution of the source in a contaminated soil by gamma-ray emitting radionuclides released after nuclear activities. This model welds together a Monte Carlo simulation approach and a mathematical transformation based on Tait–Bryan angles formalism. For Monte Carlo simulation, a source
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Molten Ba(OH)2.8H2O as an efficient and rapid etchant for detecting α-particles using a diallyl maleate-allyl diglycol carbonate detector Radiat. Meas. (IF 2.0) Pub Date : 2024-02-22 Arshad Khan, Tayseer I. Al-Naggar, Suha Al Qahtani, Soheir E. Mohamed, Hasan B. Albargi, Mohsen Alhamami, Ayman M. Abdalla
In the present study, for the first time, nuclear tracks of α-particles were created on diallyl maleate-allyl diglycol carbonate (DAM-ADC) using molten hydrated barium hydroxide (MBH). We used 17 DAM-ADC plates with dimensions of 1.0 cm × 1.0 cm × 0.1 cm. The bulk etching rate was calculated at various etching temperatures based on changes in the thickness of the DAM-ADC plates. DAM-ADC was irradiated
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Excited state lifetime of electron trapping centres in alkali feldspars Radiat. Meas. (IF 2.0) Pub Date : 2024-02-21 Svenja Riedesel, Mayank Jain
The development of the infrared photoluminescence (IRPL) signal enables the direct non-destructive probing of the trapped electron population in feldspars. Whilst IRPL offers new perspectives for luminescence dating, it also enables detailed, site-selective measurements of the dosimetric defects emitting IRPL at 880 nm (IRPL) and 955 nm (IRPL), allowing improved understanding of luminescence phenomena
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Self-adaptive pulse shape identification by using Gaussian mixture model Radiat. Meas. (IF 2.0) Pub Date : 2024-02-09 Zhiqiang Cheng, Qingxian Zhang, Heyi Tan, Chunhui Dong, Xin Hou, Jian Zhang, Xiaozhe Li, Hongfei Xiao
Identifying the pulse shape is a crucial step in detecting the contamination of surfaces by α/β radioactive isotopes. In this study, the authors propose a self-adaptive method to identify the pulse shape by applying the Gaussian mixture model and the constant-fraction timing algorithm to a ZnS(Ag) and plastic scintillator to improve its accuracy of detection of low-energy particles, and realize automatic
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Monte Carlo simulation for assessment of occupational doses in pediatric cardiology procedures Radiat. Meas. (IF 2.0) Pub Date : 2024-02-02 Carla J. Santos, William S. Santos, Lucio P. Neves, Diego C. Galeano, Ana P. Perini
In this study, we evaluated the occupational doses during a pediatric cardiac interventional radiology procedure using Monte Carlo simulations. For this purpose, we employed virtual anthropomorphic phantoms, with 1-, 5- and 10-year-old, as well as two adult phantoms to represent the medical staff. Each scenario was composed of two phantoms, the physician and the patient, coupled with the MCNPX 2.7
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Real-time neutron beam monitor utilizing scintillator technology for boron neutron capture therapy Radiat. Meas. (IF 2.0) Pub Date : 2024-02-02 Sang June Jeon, Jaewon Choi, Kyu Young Lee, Jungyu Yi
In boron neutron capture therapy (BNCT), patient dose is contingent upon boron concentration and neutron irradiation. This study details the creation and implementation of a real-time beam-monitoring system using a Eu:LiCaAlF (LiCAF) scintillation detector. This system precisely regulates neutron irradiation according to the treatment plan. A two-step calibration process was employed for enhanced reliability
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Improvement and verification of new measurement methods for radon and thoron progeny activity concentration based on alpha spectrometry analysis Radiat. Meas. (IF 2.0) Pub Date : 2024-02-01 Kang Peng, Hao Wang, Jinmin Yang, Lei Zhang, Qiuju Guo
For accurate dose evaluation of radon and thoron exposure, it is important to find a more effective method to measure radon and thoron progeny activity concentration in field measurements. For the purpose of improving measurement sensitivity, two new alpha spectrometry methods, the Wicke-Tn and PKU-Tn methods, for radon as well as thoron progeny were proposed and a series of verification experiments
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Fragmentation of the positron-emitting nucleus 11C on a carbon target at 248 MeV/nucleon Radiat. Meas. (IF 2.0) Pub Date : 2024-01-26 S.Y. Jin, Z.Q. Chen, S.T. Wang, Z.Y. Sun, Y.Z. Sun, X.H. Zhang, S.W. Tang, Y.H. Yu, D. Yan, F. Fang, Y.J. Zhang, S.B. Ma, X.B. Wei, T.Q. Liu, Y.F. Xu, Z.Y. Li, X. Jiang
Radioactive ions with positron-emitting such as 11C have been proposed to be used in heavy ion therapy due to their advantageous characteristics in verifying the ion range. However, the interaction between the incident beam and the patient’s body can induce the attenuation of the beam and the generation of the fragmentation products. The study of the impact of these processes suffers from the limited
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Long-term field studies of a distributed network of sensors for environmental radiological monitoring Radiat. Meas. (IF 2.0) Pub Date : 2024-01-23 N. Heracleous, K. Bauer, L. Gallego Manzano, F. Murtas, M. Silari, L. Svihrova
The W-MON project goal is to establish an automatic control mechanism of the presence of radioactive material in conventional waste containers at CERN using a distributed network of interconnected low-power radiation sensors. This network facilitates continuous data recording, transfer and storage in a database while allowing online and offline data analysis, in addition to alarm triggering. Data transmission
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Development of contamination detection system combined with various remote devices Radiat. Meas. (IF 2.0) Pub Date : 2024-01-19 Yuki Morishita, Hiroko Miyamura, Yuki Sato, Masatoshi Oura
The detection of alpha and beta contamination locations is important for decontaminating nuclear facilities. In the high radiation dose rate environment at the decommissioning sites, the contamination measurement by the workers is not effective. Thus, we developed a remote automatic contamination measurement system using a new scintillator-based detector. A 50 mmφ × 100-μm-thick YAlO3(Ce)(YAP:Ce) scintillator
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Lifetime extension of optically stimulated luminescent dosimeters above 10 gy Radiat. Meas. (IF 2.0) Pub Date : 2024-01-18 Hayden Scott, Paola Alvarez, Rebecca Howell, Adam Riegel, Ryan Sun, Stephen Kry
Background Optically stimulated luminescent dosimeters (OSLDs) are used in clinical radiation dosimetry, but their sensitivity changes with the accumulated dose, limiting their reusability. Different studies have reported inconsistent results regarding the changes in sensitivity at different accumulated doses, and the reasons for this inconsistency remain unclear. In addition, the extent to which the
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Performance of styrene polymerized plastic scintillator with micropixel avalanche photodiode Radiat. Meas. (IF 2.0) Pub Date : 2024-01-17 A. Sadigov, F. Ahmadov, G. Ahmadov, E. Aksu, D. Berikov, S. Nuruyev, R. Akbarov, M. Holik, F. Mamedov, J. Nagiyev, S. Gürbüz Güner, A. Mammadli, N. Suleymanova, C. Abbasova, S. Melikova, E. Yilmaz, O. Tagiyev, S. Lyubchyk, Z. Sadygov
This paper presents the performance of polystrene based plastic scintillator produced in Turkish Energy, Nuclear and Mineral Research Agency (TENMAK). The scintillator is manufactured using thermal polymerization of commercially available styrene monomer doped with first and second fluorescent dyes. The absorption spectrum of the scintillator exhibited two absorption bands at 225 nm and 340 nm, with
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An overview of, and prospects for, new luminescent detectors Radiat. Meas. (IF 2.0) Pub Date : 2024-01-14 Stephen W.S. McKeever
It has been realized since the early development of the first commercial TL dosimeter, LiF:Mg,Ti, that impurities (dopants) play a crucial role in the luminescence process. Initial attempts to describe the mechanisms of TL production were based on the concepts of “point” defects and the interchange of delocalized electronic charge between these defects, which acted either as trapping centers or recombination
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Design and validation of a single cylindrical neutron spectrometer using a gold activation foil Radiat. Meas. (IF 2.0) Pub Date : 2024-01-06 Rasito Tursinah, Sidik Permana, Zaki Su'ud, Alan Maulana, Putu Sukmabuana
A single cylindrical neutron spectrometer (SCNS) with a gold activation foil was designed for mono-directional high-flux neutron spectrum measurement applications. A total of seven gold activation foils with a diameter of 11 mm and a thickness of 0.2 mm were placed in the moderator as detectors with a depth variation of 15 mm. The moderator was cylindrical with a diameter of 8 cm and a length of 16 cm
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Radiophotoluminescence properties of Ag2O–Cs2O–BaO–Al2O3–P2O5 glasses Radiat. Meas. (IF 2.0) Pub Date : 2023-12-20 Akihiro Nishikawa, Daiki Shiratori, Takumi Kato, Daisuke Nakauchi, Noriaki Kawaguchi, Takayuki Yanagida
In this study, we synthesized Ag2O–Cs2O–BaO–Al2O3–P2O5 glasses with different Ag concentrations (0.1, 0.3, 1.0, and 3.0%) using the melt-quenching method and investigated the optical properties and the spatial resolution as an imaging plate. These glasses showed luminescence at around 340 nm upon 230 nm excitation before X-ray irradiation and luminescence at around 620 nm upon 340 nm excitation after
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Alpha particle spectrometry in fluorescent nuclear track detectors with an automatic 3D track reanalysis algorithm Radiat. Meas. (IF 2.0) Pub Date : 2023-12-19 Jun Hu, Tamon Kusumoto, Miroslaw Janik, Satoshi Kodaira
The main obstacle to applying aluminum oxide doped with carbon and magnesium (Al2O3:C,Mg)-based fluorescent nuclear track detectors (FNTDs) in radionuclide therapy with alpha emitters is that it has not been known how to achieve an accurate and in situ dose assessment for in vitro cellular experiments. In this study, we developed an automatic 3D track reanalysis algorithm (ATRA) to analyze the alpha
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Drone-borne dosimetry in a radiological or nuclear scenario Radiat. Meas. (IF 2.0) Pub Date : 2023-12-12 Stef Geelen, Johan Camps, Geert Olyslaegers, Wouter Schroeyers
This paper describes the drone-borne dosimetry performed in two separate case studies. Two drone measurements were performed using a reference dose-rate detector measuring the ambient dose equivalent rate. A first flight was used to obtain reference measurements using a cesium-137 point source and flying at multiple speeds and different heights. A second flight was performed above the D1 radium storage
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Correlation between thermoluminescence and optically stimulated luminescence signal in BeO Radiat. Meas. (IF 2.0) Pub Date : 2023-12-15 Elif Kara, Clemens Woda
Beryllium Oxide (BeO) is a promising dosimetric material that is rapidly becoming an essential instrument in Optically Stimulated Luminescence (OSL) dosimetry applications. Despite the potential of BeO as a luminescence dosimeter, gaps remain in understanding how its Thermoluminescence (TL) and Optically Stimulated Luminescence (OSL) signals are connected. Our study aimed at examining Residual Thermoluminescence
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Neutron source strength verification via reaction rate measurement and Monte Carlo simulation Radiat. Meas. (IF 2.0) Pub Date : 2023-12-14 Alvie Asuncion-Astronomo, Charlotte V. Balderas, Jeffrey D. Tare, Cheri Anne M. Dingle
Determining the neutron source strength is essential to ensure optimal use of the source and to implement adequate radiation protection measures. In this study, the source strength of two (α,n) neutron sources – a newly acquired 185 GBq 241AmBe and a legacy source 74 GBq 239PuBe – were verified. Source strength verification was performed by measuring the induced activities in irradiated 115In foils
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Investigation of polarization mechanism in MSM TlBr crystal room-temperature nuclear radiation detector Radiat. Meas. (IF 2.0) Pub Date : 2023-12-09 Mingzhi Zhang, Guotu Xia, Chentao Huang, Juan Liu, Fang Tian, Wenjuan Deng, Jijun Zou, Bin Tang
Thallium Bromide (TlBr) single crystal detector is widely recognized as an excellent semiconductor nuclear radiation detector. And its detection performance has already reached commercial level of the majority semiconductor detector. However, the long-term stability of TlBr detector always exhibited a serious polarization effect and the commercial application of TlBr detector is heavily limited. In
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The sensitisation of quartz extracted from andesite Radiat. Meas. (IF 2.0) Pub Date : 2023-12-09 N. Karimi Moayed, M. Fattahi, M. Autzen, E. Haghshenas, V. Tajik, Z. Shoaie, M. Bailey, R. Sohbati, A.S. Murray
Low quartz sensitivities have been reported in several studies in Iran, and in part this is presumed to be a result of the volcanic provenance of many of the sediments in the study areas. In this study we test experimentally whether a quartz sample, extracted from an andesitic rock and showing an insensitive fast component in the Optically Stimulated Luminescence (OSL) signal, can be sensitised using
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The influence of Monte Carlo radiation transport codes and hadron physics models on stray neutron dose estimations in proton therapy: An extended intercomparison Radiat. Meas. (IF 2.0) Pub Date : 2023-12-12 Dries Colson, Sita Pinasti, Andrea Nicole Matamoros Ortega, Marijke De Saint-Hubert, Olivier Van Hoey, Brigitte Reniers
Purpose Selecting a Monte Carlo (MC) radiation transport code and nuclear physics model affects the simulation of secondary neutron fluence energy spectra and the estimation of the neutron dose equivalent in proton therapy. This study compares the MC codes FLUKA, MCNPX and GEANT4 from previous work with two additional MC codes, TOPAS (with either the Binary Intra-nuclear Cascade (BIC) or the Bertini
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Influence of eye lens dosimeter positioning in a realistic dosimetric phantom in reference radiation beams Radiat. Meas. (IF 2.0) Pub Date : 2023-12-06 Wlademir Carvalho Vasconcelos Filho, Gabriela Tereza Pinheiro Melo, Max Well Caetano de Araújo, Viviane Khoury Asfora, Helen Jamil Khoury, V.S.M. Barros
This paper presents a novel approach to dosimeter placement evaluation for personal eye lens dosimetry. A new assembly, known as the “Eye-Band”, and an anthropomorphic phantom containing two “Real Eye Dosimeters”, referred to as REDs, are proposed. The purpose of this study is to compare the energy and angular responses of the Eye-Band dosimeter assembly with those of an anthropomorphic dosimeter holder
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Pulsed infrared stimulated luminescence measurements for defect pair model studies in feldspars Radiat. Meas. (IF 2.0) Pub Date : 2023-12-06 Nigel A. Spooner, Owen M. Williams, Danièle G. Questiaux
We present a time-resolved experimental study of feldspar infrared stimulated luminescence (IRSL) as part of a defect pair model investigation of the underlying mechanisms. Within our investigation we recorded ultraviolet emissions that covered a diverse range of alkali feldspars together with a limited selection of plagioclase feldspars. In analysing our measurements, we find that each IRSL pulse
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Accuracy improvement of a simulation model of a radiation portal monitor by correcting dead-time effect Radiat. Meas. (IF 2.0) Pub Date : 2023-12-05 Hyeonjun Choi, Ji-yong Shin, Haneul Kim, Jong-hyeon Lee, Jaeho Jang
Thousands of radiation portal monitors (RPMs) have been deployed around the world to detect radioactive materials that are outside of regulatory control. The detection capability of the RPMs can be evaluated by conducting a field test with various radioactive materials. However, field tests are limited because the RPMs are operated 24 h a day. The Monte Carlo N-Particle (MCNP) transport code provides
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A new analytical model to fit both fine and coarse grained quartz luminescence dose response curves Radiat. Meas. (IF 2.0) Pub Date : 2023-12-05 John L. Lawless, A. Timar-Gabor
We address two issues: (a) the choice of suitable analytic forms for curve fitting quartz OSL-SAR dose response data and (b) possible physical interpretations of the difference between fine (4–11 μm) and coarse (63–90 μm) grain samples. We start with a phenomenological model with three levels: an OSL-active trap, a deep trap, and a radiative center. This model yields a simple analytic form for the
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Testing new kinetic models and calibration methods for Rock Surface Luminescence Exposure dating using controlled experiments Radiat. Meas. (IF 2.0) Pub Date : 2023-11-24 Trine H. Freiesleben, Kristina J. Thomsen, Elaine Sellwood, Jinfeng Liu, Andrew S. Murray
Rock surface luminescence exposure dating (RSLED) is an evolving tool in dating prehistoric rock surfaces. In this study, we explore and compare current and new models and calibration methods using optically stimulated luminescence (OSL) depth profiles from quartz grains and Infrared Stimulated Luminescence (IRSL; IR50, pIRIR225, and MET290) from feldspar grains found in granite and sandstone samples
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Radiation-induced luminescence properties of BaCl2:Eu transparent ceramics fabricated by spark plasma sintering method Radiat. Meas. (IF 2.0) Pub Date : 2023-11-17 Shota Otake, Hirotaka Sakaguchi, Yuta Yoshikawa, Takumi Kato, Daisuke Nakauchi, Noriaki Kawaguchi, Takayuki Yanagida
BaCl2:Eu transparent ceramics were synthesized by the spark plasma sintering method, and concentration dependence of Eu on optical and scintillation properties was investigated. BaCl2:Eu transparent ceramics showed photoluminescence (PL) and scintillation peaks at 400 nm due to 5d–4f transition of Eu2+. The PL and scintillation decay time constants of BaCl2:Eu transparent ceramics were ∼400 ns. The
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A spherical neutron long counter for 4π neutron detection in the energy range of 0.01 eV to 20 MeV Radiat. Meas. (IF 2.0) Pub Date : 2023-11-01 Jiang Gong, Lan Changlin, Cao Lei, Liu Haiqing, Yang Xianlin, Zhang Yi, Pan Xiaodong, Wei Yuting, Hong Bo, Wang Jiahao, Liu Juntao, Ge Yujie
Neutron detection using a long counter is the most commonly used method for accurate neutron flux measurement. It is desirable to design a long counter with a flat energy response and a consistent angular response. This requires counters to have neutron-energy-independent efficiency over a wide range of energies and a very slight dependence on the direction of neutron incidence in the 4π space. In
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Measurement of field match lines in electron beam radiotherapy using carbon quantum dot sheeting enhanced Cherenkov imaging Radiat. Meas. (IF 2.0) Pub Date : 2023-10-29 Changran Geng, Xing Di, Xu Li, Diyun Shu, Lei Zhu, Xiaobin Tang
The aim of this study is to test the utility of optical imaging technique that contains a flexible carbon quantum dot (cQD) sheet and optical camera to measure matching of adjacent radiation fields due to introduced distances delivered during electron radiotherapy treatments. Aqueous solution of cQD is prepared with distilled water at the concentration of 0.1 g/L and the cQD sheet is prepared by spin
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One-dimensional position-sensitive detector for alpha particles using an outer-layer scintillating fiber Radiat. Meas. (IF 2.0) Pub Date : 2023-10-20 Sho Toyama, Miura Daiki, Misako Miwa, Shigeo Matsuyama
For applications of detecting alpha contamination and identifying its location over a wide area at a time in nuclear plants and radiation facilities, a position-sensitive detector for α-rays based on an outer-layer scintillating (OLS) fiber with silicon photomultiplier (SiPM) readout was developed. While a standard scintillating fiber is unable to detect α-rays due to their short range, the OLS fiber
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An easy tool for the Monte Carlo simulation of the passage of photons and electrons through matter Radiat. Meas. (IF 2.0) Pub Date : 2023-10-16 Víctor Moya, Jaime Rosado, Fernando Arqueros
A simple Monte Carlo (MC) algorithm for the simulation of the passage of low-energy gamma rays and electrons through any material medium is presented. The algorithm includes several approximations that accelerate the simulation while maintaining reasonably accurate results. Notably, pair production and Bremsstrahlung are ignored, which limits the applicability of the algorithm to low energies (≲5MeV
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Scintillation properties of composite films based on CsPbBr3 nanocrystals embedded in PMMA Radiat. Meas. (IF 2.0) Pub Date : 2023-10-14 T. Skrypnyk, O. Viahin, I. Bespalova, O. Zelenskaya, V. Tarasov, V. Alekseev, S. Yefimova, O. Sorokin
Transparent composite films of polymethylmethacrylate with embedded CsPbBr3 colloidal nanocrystals (CsPbBr3-PMMA) were obtained. The optical, photoluminescent, and scintillation properties of the composite films were studied. The CsPbBr3-PMMA films had an intense photoluminescence signal and a nanosecond-range photoluminescence decay time (2 ns). The scintillation characteristics of CsPbBr3-PMMA films
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Thermal effects on the time build-up patterns of a weather resistant radiophotoluminescence glass (SAPANS) Radiat. Meas. (IF 2.0) Pub Date : 2023-10-10 Hiroshi Yasuda, Yuuki Sakai
A recently developed weather-resistant radiophotoluminscence (RPL) glass, named “SAPANS”, has a feature of slow time build-up of RPL. This feature could be utilized for the estimation of post-exposure elapsed time in a radiological accident accompanied with an unnoticed radiation exposure. In the present study, thermal effects on the time build-up patterns of RPL from SAPANS (“SAPANS RPL” hereafter)
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Simulation of unfolding fast neutron spectrum from CR-39 track morphology Radiat. Meas. (IF 2.0) Pub Date : 2023-10-13 Zhiling Li, Weihai Zhuo, Shiyan Yang, Yupeng Yao, Chao Zhao, Liuyu Cui, Bo Chen
The aim of this study is to investigate the impact of various factors on neutron spectrum unfolding, including track parameters (major axis, minor axis and depth), polyethylene (PE) thickness, and etching time. The Monte Carlo code Geant4 and proton track parameter calculation program TRACK_P were applied to simulate the response matrix and track parameters spectrum. Four test spectra—252Cf spectrum
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Light response uniformity of LuAG:Ce scintillating single crystal fiber grown by laser heated pedestal growth method Radiat. Meas. (IF 2.0) Pub Date : 2023-10-11 Xibin Wang, Zhonghan Zhang, Xiang Li, Huaming Kou, Zheng Zhang, Yun Dai, Shengyao Zhou, Xu Wu, Qinghui Wu, Junfeng Chen, Liangbi Su, Anhua Wu
Own to its fine granularity and sub-millimeter position information, scintillating single crystal fibers (SSCFs) hold great potential for various applications such as electromagnetic calorimeters, positron emission tomography, and radiotherapy dosimetry. The light response uniformity of scintillating fibers is an important parameter for precise measurements of ionizing radiation. Three methods were
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Type-testing of the TLD system used for the assessing the eye lens doses due to ionising radiation Radiat. Meas. (IF 2.0) Pub Date : 2023-10-04 Jelena Stanković Petrović, Nataša Danilović, Nikola Kržanović, Dušan Topalović, Miloš Živanović, Predrag Božović, Nataša Todorović, Jovana Nikolov
Individual monitoring service at the Department for Radiation and Environmental Protection of Vinca Institute of Nuclear Sciences performs individual whole-body and extremities monitoring of exposed workers, using thermoluminescent dosimetry (TLD) method. The dosemeters for eye-lens personal dose equivalent measurements, Hp(3), are not regularly used at the workplaces in Serbia, even though the individual
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Testing the S/SR procedure using TLDs and OSLDs and a lexsyg smart automated reader for precise dosimetry Radiat. Meas. (IF 2.0) Pub Date : 2023-09-13 S. Motta, J.B. Christensen, E.G. Yukihara
This work demonstrates the precision achieved with thermoluminescence (TL) and optically stimulated luminescence (OSL) detectors (TLDs and OSLDs) using a procedure that takes advantage of the capabilities of automated TL/OSL readers (lexsyg smart), for potential applications in medical dosimetry. The procedure makes use of the 90Sr/90Y beta source present in the reader to correct for sample-to-sample
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Development and a feasibility study using Gafchromic XRQA2 film as a novel passive radon measurement technique Radiat. Meas. (IF 2.0) Pub Date : 2023-09-09 Worawat Poltabtim, Chutima Kranrod, Yasutaka Omori, Saowarak Musikawan, Masahiro Hosoda, Shinji Tokonami
In the present paper, a novel passive-type radon measurement technique based on Gafchromic XRQA2 film was developed. A Gafchromic XRQA2 film was modified by peeling off a polyester layer to enhance the film sensitivity to alpha particles, which were mainly emitted from radon and its progeny, and the response of the modified Gafchromic XRQA2 film to alpha particles was investigated. The results indicated
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Novel poly (disulfonyl diallyl carbonate) polymers for swift solid state nuclear track detection applications Radiat. Meas. (IF 2.0) Pub Date : 2023-09-06 Abhijit D. Shetgaonkar, Vinod K. Mandrekar, Vishnu S. Nadkarni, Diptesh G. Naik
This paper describes the design and development of two novel disulfone-carbonate polymeric materials for swift solid state nuclear track detection applications. A monomer 2,2'-(oxybis(ethylenesulfonyl))diallylcarbonate (OESDAC) has been synthesized and characterized by IR spectroscopy, NMR spectroscopy, and HR-mass spectrometry. POESDAC homopolymer and copolymers of OESDAC with allyl diglycol carbonate
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Feasibility study of using earbuds and wireless headphones for retrospective dosimetry Radiat. Meas. (IF 2.0) Pub Date : 2023-08-30 Michael Discher, Céline Bassinet, Hyoungtaek Kim
Luminescence dosimetry could be an essential tool in retrospective dosimetry for assessing an absorbed dose after a radiological overexposure. Mobile phone components could be useful proxies for measuring the amount of dose an individual has received. Different research groups have extensive experience in characterising different elements of mobile phones (i.e. electronic components, display or touch
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Quantitative beta autoradiography of a heterogeneous granulite sample and implications for luminescence dating Radiat. Meas. (IF 2.0) Pub Date : 2023-09-02 L. Martin, D.C.W. Sanderson, S. Paling, A. Cresswell, S.K. Fitzgerald
Beta dose rate heterogeneity is a known source of scatter in OSL measurement and equivalent dose distributions. Without proper methods to describe and account for it, it can contribute significantly to the uncertainties in OSL ages. For this reason, investigating the beta dose rate (β Dr) distribution is necessary to improve the dating of heterogeneous samples. Here we present a method for quantitative
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Investigating the use of two-dimensional OSL laser scanning instruments and energy-dispersive x-ray spectroscopy for OSL exposure dating Radiat. Meas. (IF 2.0) Pub Date : 2023-08-25 Tristan Bench, David Sanderson, James Feathers, Emily Warfield
Optically Stimulated Luminescence (OSL) depth profiles can be used to extrapolate rock surface exposure ages by understanding a sample's light attenuation and OSL bleaching behaviors. However, the current measuring procedure for producing depth profiles, by measuring the luminescence of millimeter slices from surface core samples, offers limited resolution data, limiting parameter extrapolative precision
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Persistent luminescence of commercial TLD-100 dosimeter: Using shallow traps for radiation dosimetry Radiat. Meas. (IF 2.0) Pub Date : 2023-08-22 Ch J. Salas-Juárez, M.A. Ugalde-Valdés, J. Guzmán-Mendoza, D. Nolasco-Altamirano, M. Martínez-Gil, C.E. Gómez-Dominguez, C.A. Guarin, R. Melendrez, T. Rivera-Montalvo
This work reports the persistent luminescence (PersL) properties of the commercial LiF:Mg,Ti (TLD-100) dosimeter and its performance in dosimetry applications. The thermoluminescence (TL) glow curve of the TLD-100 exhibits a peak at 96 °C that rapidly vanishes at room temperature, enabling the PersL phenomenon. The TLD-100 was exposed to beta particle irradiation within in the range of 0.22–32 Gy.
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Photoluminescence of high energy xenon ion irradiated magnesium aluminate spinel single crystals Radiat. Meas. (IF 2.0) Pub Date : 2023-08-23 M. Mamatova, V. Skuratov, N. Kirilkin, A. Dauletbekova, P. Th. Lê, A. Akilbekov
Laser confocal microscopy technique (60 ps laser pulse excitation at 445 nm) and a time-correlated single photon counting (TCSPC) technique have been used to study the photoluminescence (PL) in 152 MeV Xe ion irradiated MgAl2O4 single crystals. It was shown that radiation defects produced by swift xenon ions give rise to broad luminescence band positioned in the 470–800 nm wavelength range. The measurements
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The energy and angular Hp(3,α) response of commercial eye-lens dosemeters to photon and beta particle radiation Radiat. Meas. (IF 2.0) Pub Date : 2023-08-18 J. Dubeau, J. Sun, N. Leroux, S. Djeffal, R. Mistry
In 2012, the International Commission on Radiological Protection recommended a reduction of the equivalent dose limit for the lens of the eye from 150 mSv to 50 mSv per year, with a maximum 5-year average of 100 mSv. This noticeable reduction imposes more demands on the performance on personnel eye-lens dosimetry. Regulatory authorities of various jurisdictions worldwide followed some or all, of the
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Characterising and correcting for a previously unconsidered source of scatter in measurements of equivalent dose Radiat. Meas. (IF 2.0) Pub Date : 2023-08-02 G.A.T. Duller, H.M. Roberts, M.S. Chapot
Single aliquot methods make it feasible to routinely determine multiple estimates of equivalent dose (De) for a sample. The scatter in De values observed within a sample has been used previously to make inferences about the resetting of the luminescence signal being measured prior to the event dated, about post-depositional processes that may have affected the sample, and about spatial variations in
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The effect of boron co-doping on thermoluminescence and optically stimulated luminescence properties of LiMgPO4:Tb,Sm Radiat. Meas. (IF 2.0) Pub Date : 2023-08-01 Li Fu, Kaiyong Tang, Hui Cui, Zungang Wang, Zhiyuan Li, Haijun Fan, Siyuan Zhang, Mo Zhou
The effect of boron co-doping on optically stimulated luminescence (OSL) and thermoluminescence (TL) properties of LiMgPO4:Tb,Sm,B prepared by solid-state reaction was studied. The structure of the prepared materials was confirmed by X-ray diffraction. The TL glow curves of samples irradiated with different doses of β rays were tested. No matter how much B is doped, the peaks at 190 or 280 °C are for
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Compositionally disordered tungstate scintillation materials Radiat. Meas. (IF 2.0) Pub Date : 2023-08-01 M. Korzhik, D. Blau, A. Fedorov, A. Bondarau, Yu Borovlev, A. Amelina, I. Komendo, D. Kuznetsova, A. Mikhlin, V. Mechinsky, A. Postupaeva, V. Shlegel, Y. Talochka, V. Uglov
The scintillation properties of compositionally disordered self-activated scintillation materials: (Pb, Ca)WO4, (Pb, Sr)WO4 and, (Pb, Ba)WO4 are described for a fist time. New family of the scintillation materials has a density more than 7 g/cm3, an effective charge Zeff >70. The scintillation kinetics occurs faster and the light yield (LY) is close to the LY of Bi4Ge3O12 (BGO). New materials have
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Influence of dosimeter depth on estimating patient's eye lens dose in head computed tomography: A measurement and Monte Carlo simulation study Radiat. Meas. (IF 2.0) Pub Date : 2023-07-26 Ayaka Hirosawa, Kosuke Matsubara, Atsushi Fukuda, Yusuke Morioka, Masayasu Kitagawa, Yoshinori Ogawa
The distance between the posterior cornea and anterior surface of the lens is approximately 3 mm, and it is unclear whether the dose measured near the ocular surface of the phantom accurately reflects the lens dose without any specific correction factors. This study aimed to investigate the influence of the depth for the estimation of the eye lens doses of the patient during head computed tomography