Stopping power and CSDA range of electrons in liquid water, LiF, CaF2, and Al2O3 from the energy gap up to 433 keV

Autor:	G. Massillon-JL, L.R. Castillo-Rico, M.A. Flores-Mancera
Rok vydání:	2021
Předmět:	Physics Nuclear and High Energy Physics Work (thermodynamics) 3D optical data storage Range (particle radiation) Band gap Exciton Physics::Medical Physics Electron Condensed Matter::Materials Science Stopping power (particle radiation) Atomic physics Luminescence Instrumentation
Zdroj:	Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 502:189-197
ISSN:	0168-583X
DOI:	10.1016/j.nimb.2021.07.002
Popis:	Stopping powers (SP) for electrons with energies greater than 10 keV are well described through the Bethe approximation. However, for energies below, such an approach is inadequate. SP in LiF, CaF2 and Al2O3 as the luminescent materials commonly used for dosimetry study and liquid-water are scarce at energies below 10 keV. This work investigated SP and CSDA-range of electrons in in these compounds from the energy gap up to 433 keV using the full Penn algorithm. In particular, the influence of the exciton states was evaluated. The experimental optical data were selected after a rigorous evaluation process. The results indicate that the exciton states affect the SP mainly at energies below 100 eV by up to 48%, 39%, 32% and 15% for liquid-water, LiF, CaF2 and Al2O3, respectively. Furthermore, we observed a certain relationship between the minimum excitation-energy (exciton state) and the energy at which the SP is maximum.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::e32694204720fa1a49883fa1bf7e5bc3 https://doi.org/10.1016/j.nimb.2021.07.002 Zobrazit plný text záznamu Full Text from ScienceDirect