A Novel Compact Electron Spectrometer for Hot Electron Measurement in Pulsed Laser Solid Interaction
Ultra-intense laser-matter interactions provide a unique source of temporally short, broad spectrum electrons, which may be utilized in many varied applications. One such, which we are pursuing, is as part of a novel diagnostic to trace magnetic field lines in a magnetically-confined fusion device. An essential aspect of this scheme is to have a detailed characterization of the electron angular and energy distribution. To this effect we designed and constructed a compact electron spectrometer that uses permanent magnets for electron energy dispersion and over 100 scintillating fibers coupled to a 1024 x 1024 pixel CCD as the detection system. This spectrometer has electron energy coverage from 10 keV to 2 MeV. We tested the spectrometer on a high intensity (10{sup 17} to 10{sup 21} W/cm{sup 2}) short pulse (< 100 fs) laser, JanUSP, at Lawrence Livermore National laboratory using various solid targets. The details of the spectrometer and the experimental results will be reported.
- 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:
- 15002777
- Report Number(s):
- UCRL-JC-149724; TRN: US200420%%60
- Resource Relation:
- Conference: 14th Annual Topical Conference on High Temperature Plasma Diagnostics, Madison, WI (US), 07/08/2002--07/11/2002; Other Information: PBD: 5 Jul 2002
- Country of Publication:
- United States
- Language:
- English
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