Micron-scale resolution radiography of laser-accelerated and laser-exploded foils using an yttrium x-ray laser
The authors have imaged laser-accelerated foils and exploding foils on the few-micron scale using an yttrium x-ray laser (155 {angstrom}, 80 eV, {approximately}200 ps duration) and a multilayer mirror imaging system. At the maximum magnification of 30, resolution was of order one micron. The images were side-on radiographs of the foils. Accelerated foils showed significant filamentation on the rear-side (away from the driving laser) of the foil, although the laser beam was smoothed. In addition to the narrow rear-side filamentation, some shots revealed larger-scale plume-like structures on the front (driven) side of the Al foil. These plumes seem to be little-affected by beam smoothing and are likely a consequence of Rayleigh-Taylor instability. The experiments were carried out at the Nova two-beam facility.
- Research Organization:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 71357
- Report Number(s):
- UCRL-JC-118380; CONF-940592-11; ON: DE95010922; TRN: 95:015227
- Resource Relation:
- Conference: 4. international colloquium on X-ray lasers, Williamsburg, VA (United States), 16-20 May 1994; Other Information: PBD: Sep 1994
- Country of Publication:
- United States
- Language:
- English
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