High Energy X-Ray Source Generation by Short Pulse High Intensity Lasers
We are studying the feasibility of utilizing K{alpha} x-ray sources in the range of 20 to 100 keV as a backlighters for imaging various stages of implosions and high areal density planar samples driven by the NIF laser facility. The hard x-ray K{alpha} sources are created by relativistic electron plasma interactions in the target material after a radiation by short pulse high intensity lasers. In order to understand K{alpha} source characteristics such as production efficiency and brightness as a function of laser parameters, we have performed experiments using the 10 J, 100 fs JanUSP laser. We utilized single-photon counting spectroscopy and x-ray imaging diagnostics to characterize the K{alpha} source. We find that the K{alpha} conversion efficiency from the laser energy at 22 keV is {approx} 3 x 10{sup -4}.
- Research Organization:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Sponsoring Organization:
- US Department of Energy (US)
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 15006459
- Report Number(s):
- UCRL-JC-151565; TRN: US200411%%95
- Resource Relation:
- Journal Volume: 5196; Conference: SPIE Annual Meeting, Laser-Generated and Other Laboratory X-Ray and EUV Sources, Optics, and Applications, San Diego, CA (US), 08/04/2003--08/08/2003; Other Information: PBD: 2 Sep 2003
- Country of Publication:
- United States
- Language:
- English
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