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Role of hot electron transport in scintillators: A theoretical study
Author(s) -
Huang Huihui,
Li Qi,
Lu Xinfu,
Qian Yiyang,
Wu Yuntao,
Williams R. T.
Publication year - 2016
Publication title -
physica status solidi (rrl) – rapid research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.786
H-Index - 68
eISSN - 1862-6270
pISSN - 1862-6254
DOI - 10.1002/pssr.201600276
Subject(s) - scintillator , thermalisation , electron , monte carlo method , physics , ab initio , work (physics) , computational physics , atomic physics , nuclear physics , optics , thermodynamics , quantum mechanics , statistics , mathematics , detector
Despite recent intensive study on scintillators, several fundamental questions on scintillator properties are still unknown. In this work, we use ab‐initio calculations to determine the energy dependent group velocity of the hot electrons from the electronic structures of several typical scintillators. Based on the calculated group velocities and optical phonon frequencies, a Monte‐Carlo simulation of hot electron transport in scintillators is carried out to calculate the thermalization time and diffusion range in selected scintillators. Our simulations provide physical insights on a recent trend of improved proportionality and light yield from mixed halide scintillators. (© 2016 WILEY‐VCH Verlag GmbH &Co. KGaA, Weinheim)