TITLE

Study of soft-x-ray generation by laser-heating solid and gaseous tantalum plasmas with subpicosecond pulses

AUTHOR(S)
Tom, H. W. K.; Wood, O. R.
PUB. DATE
February 1989
SOURCE
Applied Physics Letters;2/6/1989, Vol. 54 Issue 6, p517
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The efficiency of x-ray emission in the 17–35 nm region from laser-heated solid and gaseous density Ta plasmas has been compared. An x-ray conversion efficiency of 0.4% from a solid density Ta plasma requires a laser fluence of 200 J/cm2 whereas the same efficiency in a gaseous Ta plasma with optimal density profile requires only 3 J/cm2 . This is due to ultrarapid thermal diffusion in the solid and to the shorter attenuation length and duration of x rays emitted from the heated solid density plasma.
ACCESSION #
9829883

 

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