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Monte-Carlo Study of Energy Losses in Hot Stage of Electronic Excitation Relaxation in Scintillators

Published online by Cambridge University Press:  21 February 2011

Roman A. Glukhov  and
Andrey N. Vasil'ev
Roman A. Glukhov
Affiliation:
Synchrotron Radiation Laboratory, Physics Department, Moscow State University, 117234 Moscow, Russia
Andrey N. Vasil'ev
Affiliation:
Synchrotron Radiation Laboratory, Physics Department, Moscow State University, 117234 Moscow, Russia
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Abstract

The results of computer simulation of the fast stages of energy relaxation in insulators after the VUV or XUV photon absorption are presented. The simulation involves two stages:the inelastic scattering of excitations with production of secondary excitations and thermalization through phonon emission. The main attention is focused on the spatial distribution functions of excitations, i.e. one-particle and two-particle distribution functions.The latter Function determines the energy transfer at final stages of energy relaxation and is important for different quenching processes and the acceleration of the luminescence decay. The Monte-Carlo simulation was carried out for BaF2 crystal for photon energies from 20 eV to 100 eV. The simulation shows that the two-particle distribution functions and thus the kinetics depend on the energy of excitation.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 348 , 1994 , 387
Copyright
Copyright © Materials Research Society 1994

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References

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