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Proceedings Paper

Optimizing photonuclear reactions with a high-intensity laser
Author(s): G. Malka; Marie Madeleine Aleonard; J. F. Chemin; G. Claverie; M. Harston; V. T. Tikhonchuk; J. N. Scheurer; S. Fritzler; Victor Malka; Philippe Balcou; G. Grillon; Stavros D. Moustaizis; L. Notebaert; M. Pittman; Erik Lefebvre
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Paper Abstract

Photo-excitation nuclear reactions induced by the 2J, 30 fs, 4x1010W/cm2, 10 Hz LOA laser were optimized with respect to the thickness of the solid target. Using 6 micrometers CH targets, electrons up to 60 MeV have been produced and converted to (gamma) -rays by Bremsstrahlung in a Ta piece. The rate of photo-fission of 238U, as well as photo- excitation nuclear reactions in Cu, Au and C samples have been measured. More than 106 nuclear reactions were obtained after 60 subsequent laser shots. The high energy electrons are forward focused, within 15 degree(s), as observed from the angular distribution of the activation in Cu. 1% of laser energy was converted to (gamma) -rays with energies higher than 10 MeV.

Paper Details

Date Published: 21 December 2001
PDF: 5 pages
Proc. SPIE 4510, Charged Particle Detection, Diagnostics, and Imaging, (21 December 2001); doi: 10.1117/12.451264
Show Author Affiliations
G. Malka, Univ. de Bordeaux I (France)
Marie Madeleine Aleonard, Univ. de Bordeaux I (France)
J. F. Chemin, Univ. de Bordeaux I (France)
G. Claverie, Univ. de Bordeaux I (France)
M. Harston, Univ. de Bordeaux I (France)
V. T. Tikhonchuk, Univ. de Bordeaux I (Russia)
J. N. Scheurer, Univ. de Bordeaux I (France)
S. Fritzler, Ecole Polytechnique (France)
Victor Malka, Ecole Polytechnique (France)
Philippe Balcou, Ecole Nationale Superieure des Techniques Avancees (France)
G. Grillon, Ecole Nationale Superieure des Techniques Avancees (France)
Stavros D. Moustaizis, Ecole Nationale Superieure des Techniques Avancees (Greece)
L. Notebaert, Ecole Nationale Superieure des Techniques Avancees (France)
M. Pittman, Ecole Nationale Superieure des Techniques Avancees (France)
Erik Lefebvre, Commissariat a l'Energie Atomique (France)


Published in SPIE Proceedings Vol. 4510:
Charged Particle Detection, Diagnostics, and Imaging
Eric Munro; John A. Rouse, Editor(s)

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