Fast electron transport and induced heating in aluminium foils

Santos, J.J. and Debayle, Arnaud Philippe Henri and Nicolaï, P. and Tikhonchuk, V. and Manclossi, M. and Batani, D. and Guenmie-Tafo, A. and Faure, J. and Malka, V. and Honrubia Checa, José Javier (2008). Fast electron transport and induced heating in aluminium foils. "Journal of Physics: Conference Series", v. 112 (n. 2); pp.. ISSN 1742-6588. https://doi.org/10.1088/1742-6596/112/2/022088.

Description

Title: Fast electron transport and induced heating in aluminium foils
Author/s:
  • Santos, J.J.
  • Debayle, Arnaud Philippe Henri
  • Nicolaï, P.
  • Tikhonchuk, V.
  • Manclossi, M.
  • Batani, D.
  • Guenmie-Tafo, A.
  • Faure, J.
  • Malka, V.
  • Honrubia Checa, José Javier
Item Type: Article
Título de Revista/Publicación: Journal of Physics: Conference Series
Date: June 2008
ISSN: 1742-6588
Volume: 112
Subjects:
Faculty: E.T.S.I. Aeronáuticos (UPM)
Department: Física Aplicada a la Ingeniería Aeronáutica [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

Beams of fast electrons have been generated from the ultra-intense laser interaction with Aluminium foil targets. The dynamics of the fast electrons propagation and the level of induced in-depth heating have been investigated using the optical emission from the foils rear side. Important yields of thermal emission, consequence of high target temperatures, were detected for targets thinner than 50 μm. We precisely characterized the targets in-depth temperature profile in order to reproduce the emission yields. At shallow depth, we show the important heating (estimated to > 100 eV till 15 μm depth) has a resistive origin upon the neutralizing return current. For deeper regions, because of the bulk component divergence, the fast electron energy losses and induced heating are due to collisions. Coupling the model to the experimental measurements, we were able to quantify the bulk of the fast electron population, corresponding to 35% of the laser energy and a 500 keV temperature.

More information

Item ID: 2720
DC Identifier: http://oa.upm.es/2720/
OAI Identifier: oai:oa.upm.es:2720
DOI: 10.1088/1742-6596/112/2/022088
Official URL: http://iopscience.iop.org/1742-6596/112/2
Deposited by: Memoria Investigacion
Deposited on: 06 Apr 2010 11:18
Last Modified: 20 Apr 2016 12:24
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