Calculation of energy relaxation rates of fast particles by phonons in crystals
Abstract
We present ab initio calculations of the temperaturedependent exchange of energy between a classical charged pointparticle and the phonons of a crystalline material. The phonons, which are computed using density functional perturbation theory (DFPT) methods, interact with the mov ing particle via the Coulomb interaction between the density induced in the material by phonon excitation and the charge of the classical particle. Energy relaxation rates are computed using time dependent perturbation theory. The method, which is applicable wherever DFPT is, is illustrated with results for CsI, an important scintillator whose performance is affected by electron thermal ization. We discuss the influence of the form assumed for quasiparticle dispersion on theoretical estimates of electron cooling rates.
 Authors:
 Publication Date:
 Research Org.:
 Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
 Sponsoring Org.:
 USDOE
 OSTI Identifier:
 1188895
 Report Number(s):
 PNNLSA106420
NN2001000
 DOE Contract Number:
 AC0576RL01830
 Resource Type:
 Journal Article
 Resource Relation:
 Journal Name: Physical Review. B, Condensed Matter, 91(10):Article No. 104305
 Country of Publication:
 United States
 Language:
 English
 Subject:
 electronphonon interaction, scintillators
Citation Formats
Prange, Micah P., Campbell, Luke W., Wu, Dangxin, Gao, Fei, and Kerisit, Sebastien N. Calculation of energy relaxation rates of fast particles by phonons in crystals. United States: N. p., 2015.
Web. doi:10.1103/PhysRevB.91.104305.
Prange, Micah P., Campbell, Luke W., Wu, Dangxin, Gao, Fei, & Kerisit, Sebastien N. Calculation of energy relaxation rates of fast particles by phonons in crystals. United States. doi:10.1103/PhysRevB.91.104305.
Prange, Micah P., Campbell, Luke W., Wu, Dangxin, Gao, Fei, and Kerisit, Sebastien N. 2015.
"Calculation of energy relaxation rates of fast particles by phonons in crystals". United States.
doi:10.1103/PhysRevB.91.104305.
@article{osti_1188895,
title = {Calculation of energy relaxation rates of fast particles by phonons in crystals},
author = {Prange, Micah P. and Campbell, Luke W. and Wu, Dangxin and Gao, Fei and Kerisit, Sebastien N.},
abstractNote = {We present ab initio calculations of the temperaturedependent exchange of energy between a classical charged pointparticle and the phonons of a crystalline material. The phonons, which are computed using density functional perturbation theory (DFPT) methods, interact with the mov ing particle via the Coulomb interaction between the density induced in the material by phonon excitation and the charge of the classical particle. Energy relaxation rates are computed using time dependent perturbation theory. The method, which is applicable wherever DFPT is, is illustrated with results for CsI, an important scintillator whose performance is affected by electron thermal ization. We discuss the influence of the form assumed for quasiparticle dispersion on theoretical estimates of electron cooling rates.},
doi = {10.1103/PhysRevB.91.104305},
journal = {Physical Review. B, Condensed Matter, 91(10):Article No. 104305},
number = ,
volume = ,
place = {United States},
year = 2015,
month = 3
}

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