Space-resolved keV spectroscopy study of neonlike x-ray laser plasmas created with low-level prepulse irradiation

Marc Nantel; Annie Klisnick; Gerard Jamelot; P. B. Holden; Pierre Jaegle; Philippe Zeitoun; Gregory J. Tallents; Andrew G. MacPhee; Ciaran L. S. Lewis

doi:10.1117/12.221627

25 September 1995 Space-resolved keV spectroscopy study of neonlike x-ray laser plasmas created with low-level prepulse irradiation

Marc Nantel, Annie Klisnick, Gerard Jamelot, P. B. Holden, Pierre Jaegle, Philippe Zeitoun, Gregory J. Tallents, Andrew G. MacPhee, Ciaran L. S. Lewis

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Proceedings Volume 2520, Soft X-Ray Lasers and Applications; (1995) https://doi.org/10.1117/12.221627
Event: SPIE's 1995 International Symposium on Optical Science, Engineering, and Instrumentation, 1995, San Diego, CA, United States

Abstract

Through the use of time-integrated space-resolved keV spectroscopy, we investigate line plasmas showing gain for irradiation using the prepulse technique. The experiments were conducted with the LULI laser of the Ecole Polytechnique, Palaiseau (France), at 1.06 micrometer with prepulse-to-main pulse intensity ratio ranging from 10^-6 to 10^-2. The particular x-ray lasers which were studied were the collisionally excited Ne-like zinc, copper and nickel systems. The effect of the prepulses on plasma conditions are inferred through spectroscopic line ratio diagnostics. It is observed that the value of the electron temperature for each system does not vary significantly with prepulse levels, nor does their spatially resolved profile along the line. The lateral width and density of the Ne-like regions in the plasmas of all three x-ray lasers are seen to increase with the prepulse level.

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Marc Nantel, Annie Klisnick, Gerard Jamelot, P. B. Holden, Pierre Jaegle, Philippe Zeitoun, Gregory J. Tallents, Andrew G. MacPhee, and Ciaran L. S. Lewis "Space-resolved keV spectroscopy study of neonlike x-ray laser plasmas created with low-level prepulse irradiation", Proc. SPIE 2520, Soft X-Ray Lasers and Applications, (25 September 1995); https://doi.org/10.1117/12.221627

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KEYWORDS

Plasmas

Zinc

X-ray lasers

Spectroscopy

Nickel

Copper

Extreme ultraviolet

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