Hostname: page-component-745bb68f8f-l4dxg Total loading time: 0 Render date: 2025-01-10T12:56:11.319Z Has data issue: false hasContentIssue false
  • English
  • Français

Investigations concerning plasma parameters and population inversion in laser-produced counterstreaming plasmas

Published online by Cambridge University Press:  09 March 2009

P. Glas  and
M. Schnürer
P. Glas
Affiliation:
Central Institute of Optics and Spectroscopy, Rudower Chaussee6, Berlin, 01199-FRG
M. Schnürer
Affiliation:
Central Institute of Optics and Spectroscopy, Rudower Chaussee6, Berlin, 01199-FRG
Get access Rights & Permissions [Opens in a new window]

Abstract

We investigated the case where two laser-produced plasmas collide nearly head on. Special attention was devoted to the fundamentals necessary to realize a coherent X-ray source. A gas-dynamic computational analysis was performed to understand the evolution of the density, the temperature, and the velocity of merging plasmas. The spatial intensity distribution of selected spectral lines reveals that the interaction of plasmas of different nuclear charge and charge state is not strictly collision dominated. Using spectral line intensity ratios, we determined electron temperatures and electron number densities, as well as the intensity inversion on the 4–1 to 3–1 resonance transitions of [He]-like Al. Inversion occurs in the vicinity of the targets if identical materials are used (Al–Al) and is possibly indicated in the interaction zone for different ones (Al–Cu), too. The inversion factors (and the gain coefficient) for the 4–3 transition of [He]-like Al at about 130 Å were estimated.

Type
Research Article
Information
Laser and Particle Beams , Volume 9 , Issue 2 , June 1991 , pp. 501 - 515
Copyright
Copyright © Cambridge University Press 1991

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Boehly, T. et al. 1987 Proc. Soc. Photo-Opt. Instrum. Eng. 831, 305.Google Scholar
Chenais-Popovics, C. et al. 1986 J Quant. Spectros. Radiat. Transfer, 36, 355.CrossRefGoogle Scholar
Cunningham, P. F. et al. 1988 Opt. Commun. 68, 412.Google Scholar
Goodwin, D. G. et al. 1988 J. Appl. Phys. 64, 1005.Google Scholar
Roatsch, Th. et al. 1987 Earth Moon Planets 38, 37.CrossRefGoogle Scholar
Yamanaka, C. (editor) 1988 Short Wavelength Lasers and Their Applications, Springer Proceedings in Physics 30 (Springer-Verlag, Berlin).Google Scholar