Application of a picosecond soft x-ray source to time-resolved plasma dynamics

J. Workman, M. Nantel, A. Maksimchuk, D. Umstadter

Research output: Contribution to journalArticlepeer-review

60 Scopus citations

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 languageEnglish (US)
Pages (from-to)312-314
Number of pages3
JournalApplied Physics Letters
Volume70
Issue number3
DOIs
StatePublished - Jan 20 1997
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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