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PHYSICAL PARAMETER DEPENDENCE OF THE X-RAY GENERATION IN INTENSE LASER – CLUSTER INTERACTION

By Emily Lamour, Christophe Prigent, Jean-Pierre Rozet and Dominique Vernhet

Abstract

International audienceStudies on laser – cluster interaction performed on the LUCA facility (French acronym for Ultra Short Tunable Laser, CEA Saclay) allow to observe the production of hard x-rays in the 1 to 5 keV range when rare gas clusters of nanometer sizes are heated by strong optical fields (F > 10^9 V/cm). First complete quantitative measurements of absolute photon emission yields, as well as of charge state distributions of ionic species with inner shell vacancies have been performed as a function of several physical parameters governing the interaction. Our measurements give rise to fundamental results like an optimum heating time and an intensity threshold in the x-ray production. These data provide direct insight into the interaction dynamics and into the heating processes involved

Topics: 52.50.Jm; 34.80.Kw; 36.40.-c; 52.70.La, [PHYS.PHYS.PHYS-ATOM-PH] Physics [physics]/Physics [physics]/Atomic Physics [physics.atom-ph], [PHYS.PHYS.PHYS-ATM-PH] Physics [physics]/Physics [physics]/Atomic and Molecular Clusters [physics.atm-clus], [PHYS.PHYS.PHYS-PLASM-PH] Physics [physics]/Physics [physics]/Plasma Physics [physics.plasm-ph]
Publisher: Elsevier
Year: 2005
DOI identifier: 10.1016/j.nimb.2005.03.215
OAI identifier: oai:HAL:hal-00008075v1
Provided by: Hal-Diderot
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