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Proceedings Paper

Double-pulse excitation of x-ray capillary lasers
Author(s): Sergei V. Kukhlevsky; Ida Zs. Kozma; Libero Palladino; Armando Reale; Francesco Flora; Luca Mezi; Gualtiero Giordano
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Paper Abstract

We propose to enhance the gain of Ne-like ion capillary lasers by the utilization of two discharge pulses. A first pulse working in the pinch regime mode is designed to create the cold-plasma column with the required ionization degree, followed by a second fast high-voltage pulse to do the effective collision excitation. The second pulse, which heats the electrons to a kinetic temperature Te greater than Tecold in times shorter than the ionization time, increases the laser gain. In the two stage pumping scheme, both the amplitude of each of the pulses and the delay between them can be adjusted for independent control of the ionization degree and excitation rate. Numerical estimations performed for the low-Z-ion (Na+1, . . ., Ar+8) lasers with the double pulse pumping predict enhancement in gain by a factor of approximately 10. In addition, the extension of two-stage electrical pumping to the high-Z-ion collision and recombination laser schemes is discussed. Description of the experimental set-up constructed for such experiments and some related measurement data are also presented.

Paper Details

Date Published: 1 November 1997
PDF: 7 pages
Proc. SPIE 3156, Soft X-Ray Lasers and Applications II, (1 November 1997); doi: 10.1117/12.284824
Show Author Affiliations
Sergei V. Kukhlevsky, Janus Pannonius Univ. (Hungary)
Ida Zs. Kozma, Janus Pannonius Univ. (Italy)
Libero Palladino, Univ. dell'Aquila and INFN-LNGS (Italy)
Armando Reale, Univ. dell'Aquila and INFN-LNGS (Italy)
Francesco Flora, CR ENEA (Italy)
Luca Mezi, CR ENEA (Italy)
Gualtiero Giordano, CR ENEA (Italy)

Published in SPIE Proceedings Vol. 3156:
Soft X-Ray Lasers and Applications II
Jorge J. G. Rocca; Luiz Barroca Da Silva, Editor(s)

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