Two-stage electron acceleration by simultaneous stimulated Raman backward and forward scattering

Pierre Bertrand, Alain Ghizzo, Seppo Karttunen, Timo Pättikangas, Rainer Salomaa, Magdi Shourcri

Research output: Contribution to journalArticleScientificpeer-review

45 Citations (Scopus)

Abstract

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.’’
Original languageEnglish
Pages (from-to)3115-3129
JournalPhysics of Plasmas
Volume2
Issue number8
DOIs
Publication statusPublished - 1995
MoE publication typeA1 Journal article-refereed

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