X-ray emission and transport in gold plasmas generated by 351-nm laser irradiation

H. Nishimura, H. Takabe, K. Kondo, T. Endo, H. Shiraga, K. Sugimoto, Takeshi Nishikawa, Y. Kato, S. Nakai

Research output: Contribution to journalArticle

42 Citations (Scopus)

Abstract

Emission and transport characteristics of sub-keV x rays in laser-produced gold plasmas are investigated. Absolute x-ray spectra under three different experimental conditions have been measured with high spectral resolution to study dependences of x-ray emission on laser incidence angles, irradiation intensity, and thickness of a foil target. Simulations by a one-dimensional hydrodynamic code, which incorporates a detailed atomic physics, replicate quite well the general x-ray emission features obtained in the experiments. There remain, however, discrepancies in some details of spectral shapes, notably in the range between 0.5 and 0.9 keV. It is also shown that the transport of radiation heat wave deduced from x-ray emissions at the front and the rear sides of a thin gold foil may be interpreted by the self-similar solutions presented by Pakula and Sigel [Phys. Fluids. 28, 232 (1985); 29, 1340 (E) (1986)] with an approximated gold opacity under local thermodynamic equilibrium.

Original languageEnglish
Pages (from-to)3073-3085
Number of pages13
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Volume43
Issue number6
DOIs
Publication statusPublished - 1991
Externally publishedYes

Fingerprint

gold
irradiation
lasers
foils
x rays
atomic physics
x ray spectra
local thermodynamic equilibrium
opacity
spectral resolution
incidence
hydrodynamics
heat
fluids
high resolution
radiation
simulation

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Atomic and Molecular Physics, and Optics

Cite this

X-ray emission and transport in gold plasmas generated by 351-nm laser irradiation. / Nishimura, H.; Takabe, H.; Kondo, K.; Endo, T.; Shiraga, H.; Sugimoto, K.; Nishikawa, Takeshi; Kato, Y.; Nakai, S.

In: Physical Review A - Atomic, Molecular, and Optical Physics, Vol. 43, No. 6, 1991, p. 3073-3085.

Research output: Contribution to journalArticle

Nishimura, H, Takabe, H, Kondo, K, Endo, T, Shiraga, H, Sugimoto, K, Nishikawa, T, Kato, Y & Nakai, S 1991, 'X-ray emission and transport in gold plasmas generated by 351-nm laser irradiation', Physical Review A - Atomic, Molecular, and Optical Physics, vol. 43, no. 6, pp. 3073-3085. https://doi.org/10.1103/PhysRevA.43.3073
Nishimura, H. ; Takabe, H. ; Kondo, K. ; Endo, T. ; Shiraga, H. ; Sugimoto, K. ; Nishikawa, Takeshi ; Kato, Y. ; Nakai, S. / X-ray emission and transport in gold plasmas generated by 351-nm laser irradiation. In: Physical Review A - Atomic, Molecular, and Optical Physics. 1991 ; Vol. 43, No. 6. pp. 3073-3085.
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AU - Nishimura, H.

AU - Takabe, H.

AU - Kondo, K.

AU - Endo, T.

AU - Shiraga, H.

AU - Sugimoto, K.

AU - Nishikawa, Takeshi

AU - Kato, Y.

AU - Nakai, S.

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AB - Emission and transport characteristics of sub-keV x rays in laser-produced gold plasmas are investigated. Absolute x-ray spectra under three different experimental conditions have been measured with high spectral resolution to study dependences of x-ray emission on laser incidence angles, irradiation intensity, and thickness of a foil target. Simulations by a one-dimensional hydrodynamic code, which incorporates a detailed atomic physics, replicate quite well the general x-ray emission features obtained in the experiments. There remain, however, discrepancies in some details of spectral shapes, notably in the range between 0.5 and 0.9 keV. It is also shown that the transport of radiation heat wave deduced from x-ray emissions at the front and the rear sides of a thin gold foil may be interpreted by the self-similar solutions presented by Pakula and Sigel [Phys. Fluids. 28, 232 (1985); 29, 1340 (E) (1986)] with an approximated gold opacity under local thermodynamic equilibrium.

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