Monte-Carlo study of the effect of small admixture of iron atoms on the energy absorbed by solid disordered neon irradiated by near-Fe1s-threshold photons
| Autor: | Alexander P. Chaynikov, A.G. Kochur, Victor Yavna |
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| Rok vydání: | 2019 |
| Předmět: |
Materials science
010304 chemical physics chemistry.chemical_element Photoionization 01 natural sciences Crystallographic defect Atomic and Molecular Physics and Optics 030218 nuclear medicine & medical imaging Ionizing radiation 03 medical and health sciences Neon 0302 clinical medicine chemistry Ionization 0103 physical sciences Atom Physics::Atomic and Molecular Clusters Physics::Atomic Physics Irradiation Atomic physics Absorption (electromagnetic radiation) |
| Zdroj: | The European Physical Journal D. 73 |
| ISSN: | 1434-6079 1434-6060 |
| Popis: | Energy absorption processes in iron-doped solid disordered neon under photon irradiation are studied by Monte Carlo simulation with accurate accounting for the processes of the cascade decay of vacancies in the electron shells of ionized atoms. Cascade decay processes of ionized atoms in matter under ionizing radiation are demonstrated to be a crucial factor in the mechanisms of energy absorption in irradiated samples. Small (0.25–4%) admixtures of iron atoms to solid neon samples lead to noticeable enhancement of energy absorption in a sample (1.2–2.7 times) at incident photon energies exceeding Fe1s ionization threshold. Since the neon atom is isoelectronic with H2O, this effect may well be expected in tissues of organisms under ionizing radiation. |
| Databáze: | OpenAIRE |
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