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Proceedings Paper

Subpicosecond dynamics of intense laser-cluster interaction: keV x rays and highly charged ion production
Author(s): Emily Lamour; Serge Dreuil; Jean-Claude J. Gauthier; Olivier Gobert; Pierre Meynadier; Didier Normand; Michel Perdrix; Catherine Prigent; J.M. Ramillon; Jean Pierre Rozet; Dominique Vernhet
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Paper Abstract

We have performed studies of keV x-ray production from (formula available in paper) rare gas clusters submitted to intense IR laser pulses. Up to (formula available in paper) per pulse at a moderate atomic density have been observed. High resolution spectroscopy studies in the case of (formula available in paper) clusters have also been performed, gibing unambiguous evidence of highly charge ions with K vacancies production. We have determined the photon energies and the absolute photon emission yields as a function of several physical parameters governing the interaction: size and atomic number of the clusters, peak intensity of the laser. Unexpectedly low laser intensity thresholds have been measured. The result obtained indicate nevertheless that x-rays may be emitted before cluster explosion on a subpicosecond time scale, and that several mechanisms must be involved in the first stage of the production of the hot nanoplasma induced from each cluster.

Paper Details

Date Published: 14 November 2001
PDF: 9 pages
Proc. SPIE 4504, Applications of X Rays Generated from Lasers and Other Bright Sources II, (14 November 2001); doi: 10.1117/12.448454
Show Author Affiliations
Emily Lamour, Univ. Paris VII and Univ. Paris VI (France)
Serge Dreuil, Univ. Paris VII and Univ. Paris VI (France)
Jean-Claude J. Gauthier, Lab. pour l'Utilisation des Lasers Intenses (France)
Olivier Gobert, CEA Saclay (France)
Pierre Meynadier, CEA Saclay (France)
Didier Normand, CEA Saclay (France)
Michel Perdrix, CEA Saclay (France)
Catherine Prigent, Univ. Paris VII and Univ. Paris VI (France)
J.M. Ramillon, CNRS-CEA (France)
Jean Pierre Rozet, Univ. Paris VII and Univ. Paris VI (France)
Dominique Vernhet, Univ. of Denis Diderot (France)

Published in SPIE Proceedings Vol. 4504:
Applications of X Rays Generated from Lasers and Other Bright Sources II
George A. Kyrala; Jean-Claude J. Gauthier, Editor(s)

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