Two-stage electron acceleration by simultaneous stimulated Raman backward and forward scattering
- Universite Henri Poincare Nancy I, Laboratoire de Physique des Milieux Ionises-Centre National de la Recherche Scientifique URA 835, B.P. 239, 54506 Vanduvre-les-Nancy (France)
- VTT Energy, P. O. Box 1604, FIN-02044 VTT (Finland)
- Department of Technical Physics, Helsinki University of Technology, FIN-02150 Espoo (Finland)
- Centre Canadien de Fusion Magnetique, Tokamak de Varennes, Varennes J3X 1S1, Quebec (Canada)
The coexistence of stimulated Raman forward and backward scattering of intense electromagnetic radiation, which can occur, for instance, in laser fusion plasmas, is investigated. The simultaneous Raman forward and backward scattering is shown to create an electrostatic field structure which is exceptionally efficient in producing highly relativistic electrons. The mechanism of the electron acceleration is analyzed both by Vlasov--Maxwell simulations with self-consistent fields and by test particle calculations with prescribed electrostatic fields. The Vlasov--Maxwell simulations reveal that the two plasma waves generated by the backward and forward scattering are spatially separated, and thus form a two-stage electron ``accelerator.`` {copyright} {ital 1995} {ital American} {ital Institute} {ital of} {ital Physics}.
- OSTI ID:
- 172071
- Journal Information:
- Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 8 Vol. 2; ISSN PHPAEN; ISSN 1070-664X
- Country of Publication:
- United States
- Language:
- English
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