Characterization of laser-produced plasmas by ultraviolet Thomson scattering

B. La Fontaine, H. A. Baldis, D. M. Villeneuve, J. Dunn, G. D. Enright, J. C. Kieffer, H. Pepin, M. D. Rosen, Dennis L Matthews, S. Maxon

Research output: Contribution to journalArticle

36 Scopus citations

Abstract

A detailed characterization of laser-produced plasmas significant to x-ray lasers and inertial confinement fusion was performed. The electron temperature was measured credibly employing single-shot, time-space-resolved Thomson scattering techniques. The plasmas rendered from solid targets were probed at somewhat elevated densities. The results were compared with the hydrodynamics simulation code LASNEX. The code appeared to be in better agreement with the measurements for plasmas of heavier elements. Comparison of Thomson scattering results with L-shell x-ray spectroscopic measurements of germanium plasmas was also carried out. A close to linear relationship between Te and the laser intensity was determined for intensities analyzed. However, the ion temperature proved difficult to infer from Thomson scattering spectra for higher-Z-plasmas. Moreover, anomalous broadening of the ion perks in the Thomson scattering spectra was noted and ascribed to several mechanisms including collisional effects, turbulence, or non-Maxwellian electron distributions.

Original languageEnglish (US)
Pages (from-to)2329-2341
Number of pages13
JournalPhysics of Plasmas
Volume1
Issue number7
DOIs
StatePublished - Jul 1994
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Condensed Matter Physics

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    La Fontaine, B., Baldis, H. A., Villeneuve, D. M., Dunn, J., Enright, G. D., Kieffer, J. C., Pepin, H., Rosen, M. D., Matthews, D. L., & Maxon, S. (1994). Characterization of laser-produced plasmas by ultraviolet Thomson scattering. Physics of Plasmas, 1(7), 2329-2341. https://doi.org/10.1063/1.870630