Temperature and x-ray intensity scaling in KrF laser plasma interaction

Gupta, P. D.; Popil, R.; Fedosejevs, R.; Offenberger, A. A.; Salzmann, D.; Capjack, C. E.
January 1986
Applied Physics Letters;1/13/1986, Vol. 48 Issue 2, p103
Academic Journal
Experimental measurements are presented of space and time integrated x-ray emission from aluminum plasma produced by 2 ns (full width at half-maximum), 268 nm Raman compressed KrF laser pulses. A single temperature spectrum was measured giving temperatures of 75–440 eV over the range of intensities 9×1011–2×1013 W/cm2. This scaling agrees well with a simple self-regulating model. Conversion of laser energy into x rays above 1 keV energy was found to scale as I2.37L reaching 0.35% at 3.5×1013 W/cm2.


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