TITLE

High-intensity laser-plasma interactions in the refluxing limit

AUTHOR(S)
Nilson, P. M.; Theobald, W.; Myatt, J.; Stoeckl, C.; Storm, M.; Gotchev, O. V.; Zuegel, J. D.; Betti, R.; Meyerhofer, D. D.; Sangster, T. C.
PUB. DATE
May 2008
SOURCE
Physics of Plasmas;May2008, Vol. 15 Issue 5, p056308
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The interaction of intense laser pulses (5×1016 W/cm21018 W/cm2, where the target is heated to less than 100 eV. As target volume is reduced, efficient energy transfer by the refluxing electrons heats the targets to hundreds of eV. This affects L→K and M→K electronic transitions during ion de-excitation that probe the bulk plasma conditions during this rapid isochoric heating phase. Comparison of measured Kα yields in the cold-material limit with a Kα production model, and measured Kβ/Kα variations with numerical target-heating calculations, provides a robust method for inferring the fast-electron energy content. Bulk electron temperatures of at least 200 eV are inferred for the smallest mass targets.
ACCESSION #
32509525

 

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