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A Phenomenological Model of Energy Relaxation in Disordered Insulators Irradiated by Ultrafast Proton Pulses

Authors:
Lorenzo Stella
Jonathan Smyth
Brendan Dromey

Keywords: Proton irradiation; Insulators; Electron-hole plasma; Two-temperature model.

Abstract:
The picosecond relaxation of an electronically excited insulator is described by means of an extension of the two-temperature model. In this phenomenological description, charge neutrality is enforced, but the electron and hole chemical potentials are not forced to be equal. Different experimental regimes can be characterized by comparing the electron-lattice and electron-hole relaxation rates. The dependency of the long-time relaxation on both the electronic gap and the sample density is discussed. The extend two-temperature model correctly describes the unexpectedly long transient opacity displayed by a borosilicate glass irradiated by ultrafast proton pulses.

Pages: 13 to 16

Copyright: Copyright (c) IARIA, 2018

Publication date: September 16, 2018

Published in: conference

ISSN: 2308-3530

ISBN: 978-1-61208-665-1

Location: Venice, Italy

Dates: from September 16, 2018 to September 20, 2018