High energy electrons, positrons and photonuclear reactions in petawatt laser-solid experiments [electronic resource].
- Washington, D.C. : United States. Dept. of Energy, 1999. and Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
- Physical Description:
- PDF-FILE: 15; SIZE: 0.8 MBYTES pages
- Additional Creators:
- Lawrence Livermore National Laboratory, United States. Department of Energy, and United States. Department of Energy. Office of Scientific and Technical Information
- Restrictions on Access:
- Free-to-read Unrestricted online access
- The Petawatt laser at LLNL has opened a new regime of high-energy laser-matter interactions in which the quiver motion of plasma electrons is fully relativistic with energies extending well above the threshold for nuclear processes. We have observed that, in addition to the large flux of several MeV electrons ponderomotively expelled from the ultra-intense laser focus, there is a high energy component of electrons extending to -100 MeV, apparently from relativistic self-focusing and plasma acceleration in the underdense pre-formed plasma. The generation of hard bremsstrahlung cascade as these electrons traverse the solid target material, and the resulting photo-nuclear reactions, nuclear fission, and positron-electron pair production are described.
- Published through SciTech Connect., 09/09/1999., "ucrl-jc-137797", Joint Institute for Fusion Theory, Livermore, CA (US), 11/23/1998--11/24/1998., and Johnson, J; Phillips, T W; Takahashi, Y; Key, M H; Roth, M; Hunt, A W; Hatchett, S; Pennington, D M; Perry, M D; Cowan, T E; Wilks, S C; Fountain, W; Parnell, T; Kuehl, T.
- Funding Information:
View MARC record | catkey: 14656033