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X ray emission: a tool and a probe for laser - clusters interaction; L'emission X: un outil et une sonde pour l'interaction laser - agregats

Abstract

In intense laser-cluster interaction, the experimental results show a strong energetic coupling between radiation and matter. We have measured absolute X-ray yields and charge state distributions under well control conditions as a function of physical parameters governing the interaction; namely laser intensity, pulse duration, wavelength or polarization state of the laser light, the size and the species of the clusters (Ar, Kr, Xe). We have highlighted, for the first time, an intensity threshold in the X-ray production very low ({approx} 2.10{sup 14} W/cm{sup 2} for a pulse duration of 300 fs) which can results from an effect of the dynamical polarisation of clusters in an intense electric field. A weak dependence with the wavelength (400 nm / 800 nm) on the absolute X-ray yields has been found. Moreover, we have observed a saturation of the X-ray emission probability below a critical cluster size. (author)
Authors:
Publication Date:
Dec 01, 2004
Product Type:
Thesis/Dissertation
Report Number:
FRNC-TH-6254
Resource Relation:
Other Information: TH: These physique experimentale des atomes et des molecules; 246 refs
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ARGON; ATOMIC CLUSTERS; INDIRECT DRIVE LASER IMPLOSION; KRYPTON; LASER RADIATION; POWER RANGE 01-10 PW; X-RAY SOURCES; X-RAY SPECTRA; XENON
OSTI ID:
20706662
Research Organizations:
Paris-6 Univ. Pierre et Marie Curie, 75 (France)
Country of Origin:
France
Language:
French
Other Identifying Numbers:
TRN: FR0504064021867
Availability:
Available from INIS in electronic form
Submitting Site:
FRN
Size:
377 pages
Announcement Date:
Apr 27, 2006

Citation Formats

Prigent, Ch. X ray emission: a tool and a probe for laser - clusters interaction; L'emission X: un outil et une sonde pour l'interaction laser - agregats. France: N. p., 2004. Web.
Prigent, Ch. X ray emission: a tool and a probe for laser - clusters interaction; L'emission X: un outil et une sonde pour l'interaction laser - agregats. France.
Prigent, Ch. 2004. "X ray emission: a tool and a probe for laser - clusters interaction; L'emission X: un outil et une sonde pour l'interaction laser - agregats." France.
@misc{etde_20706662,
title = {X ray emission: a tool and a probe for laser - clusters interaction; L'emission X: un outil et une sonde pour l'interaction laser - agregats}
author = {Prigent, Ch}
abstractNote = {In intense laser-cluster interaction, the experimental results show a strong energetic coupling between radiation and matter. We have measured absolute X-ray yields and charge state distributions under well control conditions as a function of physical parameters governing the interaction; namely laser intensity, pulse duration, wavelength or polarization state of the laser light, the size and the species of the clusters (Ar, Kr, Xe). We have highlighted, for the first time, an intensity threshold in the X-ray production very low ({approx} 2.10{sup 14} W/cm{sup 2} for a pulse duration of 300 fs) which can results from an effect of the dynamical polarisation of clusters in an intense electric field. A weak dependence with the wavelength (400 nm / 800 nm) on the absolute X-ray yields has been found. Moreover, we have observed a saturation of the X-ray emission probability below a critical cluster size. (author)}
place = {France}
year = {2004}
month = {Dec}
}