Abstract
We demonstrate the application of an ultrashort x-ray source as an external probe to measure plasma dynamics. The plasma is generated by a 100-fs Ti:sapphire laser focused onto thin metallic films. Time-resolved spectroscopy of the gold x-ray probe transmission through a perturbed 1000 A aluminum film reveals redshifts of the L-shell photoabsorption edge. We show that the dynamic behavior of this shift is consistent with the relaxation of the aluminum following the compression generated by a shock wave traveling through the film. An analytic plasma model, with comparison to a numerical hydrodynamics model, indicates compression up to 1.4 times solid density.
Original language | English (US) |
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Pages (from-to) | 312-314 |
Number of pages | 3 |
Journal | Applied Physics Letters |
Volume | 70 |
Issue number | 3 |
DOIs | |
State | Published - Jan 20 1997 |
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)