Application of a picosecond soft x-ray source to time-resolved plasma dynamics
- Center for Ultrafast Optical Science, University of Michigan, Ann Arbor, Michigan 48109-2099 (United States)
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 {Angstrom} 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. {copyright} {ital 1997 American Institute of Physics.}
- Research Organization:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 463427
- Journal Information:
- Applied Physics Letters, Vol. 70, Issue 3; Other Information: PBD: Jan 1997
- Country of Publication:
- United States
- Language:
- English
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