Radiation Physics and Chemistry, volume 177, pages 109084
Quantitative assessment of the absorbed dose in cryodeposited noble-gas films under X-ray irradiation: Simulation vs. experiment
Publication type: Journal Article
Publication date: 2020-12-01
Journal:
Radiation Physics and Chemistry
Quartile SCImago
Q2
Quartile WOS
Q1
Impact factor: 2.9
ISSN: 0969806X
Radiation
Abstract
Abstract This work was aimed at quantitative determination of the absorbed doses under X-ray irradiation of cryogenic deposited films, particularly related to the matrix isolation experiment. The relative absorbed doses in the layers of solid noble gases of different thickness irradiated with an X-ray tube (46.6 kVp) in the specified cryostat geometry were calculated by Monte-Carlo simulation using a Geant4 code. In order to calibrate the obtained values, the relative absorbed dose in the ferrosulfate dosimeter irradiated in the same geometry was calculated in the same way. The effect of additional Al filter (420 μm) on the photon spectrum and relative absorbed dose in noble gas layers and dosimetric system was simulated. The experimental verification was based on the monitoring of the radiation-induced decay rate of ethane molecules isolated in different solid noble gas matrices (Ar, Kr, and Xe, 1:1000) irradiated in the cryostat at 6 K. It was shown that the simulation reproduces well the experimentally observed effect of the filter on relative absorbed dose rate in both dosimetric system and the layers of different solid noble gases (80–180 μm). Absolute absorbed dose rates were determined as a function of deposited layer thickness in different noble gases. The comparison of the simulation results with a crude estimation based on a single effective energy value is discussed.
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Zasimov P. V. et al. Quantitative assessment of the absorbed dose in cryodeposited noble-gas films under X-ray irradiation: Simulation vs. experiment // Radiation Physics and Chemistry. 2020. Vol. 177. p. 109084.
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Zasimov P. V., Belousov A. V., Baranova I. A., Feldman V. I., Feldman V. I. Quantitative assessment of the absorbed dose in cryodeposited noble-gas films under X-ray irradiation: Simulation vs. experiment // Radiation Physics and Chemistry. 2020. Vol. 177. p. 109084.
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TY - JOUR
DO - 10.1016/j.radphyschem.2020.109084
UR - https://doi.org/10.1016%2Fj.radphyschem.2020.109084
TI - Quantitative assessment of the absorbed dose in cryodeposited noble-gas films under X-ray irradiation: Simulation vs. experiment
T2 - Radiation Physics and Chemistry
AU - Zasimov, Pavel V
AU - Belousov, Alexandr V
AU - Baranova, Irina A
AU - Feldman, Vladimir I
AU - Feldman, Vladimir I.
PY - 2020
DA - 2020/12/01 00:00:00
PB - Elsevier
SP - 109084
VL - 177
SN - 0969-806X
ER -
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@article{2020_Zasimov,
author = {Pavel V Zasimov and Alexandr V Belousov and Irina A Baranova and Vladimir I Feldman and Vladimir I. Feldman},
title = {Quantitative assessment of the absorbed dose in cryodeposited noble-gas films under X-ray irradiation: Simulation vs. experiment},
journal = {Radiation Physics and Chemistry},
year = {2020},
volume = {177},
publisher = {Elsevier},
month = {dec},
url = {https://doi.org/10.1016%2Fj.radphyschem.2020.109084},
pages = {109084},
doi = {10.1016/j.radphyschem.2020.109084}
}