NEW METHOD FOR THE CREATION OF HIGH DENSITY, HIGH TEMPERATURE ELONGATED PLASMA.

A. Zigler*, M. Kishenevsky, E. Yarkoni, M. Givon

*Corresponding author for this work

Research output: Contribution to conferencePaperpeer-review

Abstract

Various designs for producing a soft X-ray laser require a large homogeneous plasma (with a scale length of at least 100 mu m), having a density on the order of 10**2**0 cm**-**3. The authors have produced a large, high-density, high-temperature plasma by combining a high-power laser with a capillary electrical discharge. A low-temperature, high-density plasma is produced by passing a slow electrical discharge through a flat capillary filled with an appropriate element and then heated by a 20 GW Nd-glass laser pulse focused to a line. An average electron temperature of about 250 eV and electron density of about 10**2**0 cm**-**3 was derived from intensity ratios of the various H-like and He-like lines. X-ray pinhole photographs indicate that the hot plasma is 8 mm long and 0. 2 mm wide. The major advantage of the method is the separation between the process of creating a high-density plasma and the process of heating it. This separation provides conditions that are optimal for population inversion production.

Original languageEnglish
Pages69-70
Number of pages2
StatePublished - 1987
Externally publishedYes

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