1 November 1997 Double-pulse excitation of x-ray capillary lasers
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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.
© (1997) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Sergei V. Kukhlevsky, Sergei V. Kukhlevsky, Ida Zs. Kozma, Ida Zs. Kozma, Libero Palladino, Libero Palladino, Armando Reale, Armando Reale, Francesco Flora, Francesco Flora, Luca Mezi, Luca Mezi, Gualtiero Giordano, Gualtiero Giordano, } "Double-pulse excitation of x-ray capillary lasers", Proc. SPIE 3156, Soft X-Ray Lasers and Applications II, (1 November 1997); doi: 10.1117/12.284824; https://doi.org/10.1117/12.284824


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