Multibeam effects on fast-electron generation from two-plasmon-decay instability

Experiments with multiple laser beams have been carried out in both spherical and planar geometry to study two-plasmon-decay instability, the predominant source of suprathermal electrons in direct-drive inertial confinement fusion experiments. These electrons are observed using the hard x rays gener...

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Bibliographic Details
Published in:Physical review letters 2003-06, Vol.90 (23), p.235002-235002, Article 235002
Main Authors: Stoeckl, C, Bahr, R E, Yaakobi, B, Seka, W, Regan, S P, Craxton, R S, Delettrez, J A, Short, R W, Myatt, J, Maximov, A V, Baldis, H
Format: Article
Language:English
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Summary:Experiments with multiple laser beams have been carried out in both spherical and planar geometry to study two-plasmon-decay instability, the predominant source of suprathermal electrons in direct-drive inertial confinement fusion experiments. These electrons are observed using the hard x rays generated through electron-target interactions. The experiments show for the first time that the total overlapped intensity governs the scaling of the suprathermal-electron generation regardless of the number of overlapped beams, in contrast to conventional theories that are based on the single-beam approximation.
ISSN:0031-9007
1079-7114
DOI:10.1103/physrevlett.90.235002