Open AccessModeling of paths and energy losses of high-energy ions in single-layered and multilayered materials
Author(s) -
С. С. Грабчиков,
E. A. Grabchikova,
D. S. Vasin,
Д.И. Тишкевич,
С. Б. Ластовский,
A. S. Yakushevich,
Y. V. Bogatyrev,
I. V. Kalagin,
С. В. Митрофанов
Publication year - 2020
Publication title -
vescì nacyânalʹnaj akadèmìì navuk belarusì. seryâ fìzìka-tèhnìčnyh navuk
Language(s) - English
Resource type - Journals
eISSN - 2524-244X
pISSN - 1561-8358
DOI - 10.29235/1561-8358-2020-65-1-25-34
Subject(s) - ion , bismuth , aluminium , materials science , atomic physics , spectral line , krypton , argon , ionization , energy (signal processing) , shields , analytical chemistry (journal) , chemistry , physics , composite material , electromagnetic shielding , organic chemistry , quantum mechanics , astronomy , chromatography , metallurgy
Linear and mass ranges of protons and argon ions in aluminum, alumina, bismuth, and W 77.7 Cu 22.3 composite shields were calculated using the SRIM software package. It is shown that the protection efficiency against high-energy ions by materials with large atomic charge (Z) values is higher, from the position of linear ranges of particles, and lower, from the position of mass ranges, in comparison with materials with low Z values. The dependence of the threshold energy on the serial number of particles for aluminum, bismuth, and composite W 77.7 Cu 22.3 shields is determined. The ionization loss spectra for the passage of both protons with an energy of 20 MeV and krypton ions with an energy of 7.75 GeV through multilayer Bi/Al/Al 2 O 3 and Al/Al 2 O 3 /Bi structures were calculated. These results showed that the braking of high-energy particles in the case when the first layer contains a heavy element is higher than in the case when the first layer contains a light element. The influence of the sequence in the arrangement and thickness of the layers in the multilayer structures of the Bi/Al/Al 2 O 3 system on the efficiency of protection against high-energy ions was studied. It is shown that the nature of the dependences R(E) and ion energy losses are determined by the sequence of arrangement of individual layers, which is due to the difference in the conversion of the spectra by the material of the first layer. The studied radiation shields can be used in aerospace and nuclear technologies, as well as in many scientific and medical devices, and can be used to protect against the effects of a wide range of ionizing radiation (electrons, protons, heavy charged particles, etc.).