Experimental Investigation of the Collective Raman Scattering of Multiple Laser Beams in Inhomogeneous Plasmas
| Autor: | R. E. Bahr, J. Katz, Arnaud Colaïtis, Guillaume Duchateau, Paul-Edouard Masson-Laborde, Vladimir Tikhonchuk, Pascal Loiseau, C. Labaune, Caterina Riconda, N.G. Borisenko, W. Seka, Arnaud Debayle, Philippe Nicolai, Christian Stoeckl, M. Casanova, Sylvie Depierreux, C. Neuville, V. Tassin, A. Orekhov, Anne Héron, Denis Pesme, Stefan Hüller, G. Tran, C. Baccou |
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| Rok vydání: | 2016 |
| Předmět: |
Physics
Density gradient General Physics and Astronomy Plasma 01 natural sciences Electromagnetic radiation 010305 fluids & plasmas symbols.namesake Coupling (physics) X-ray Raman scattering Complex geometry Physics::Plasma Physics 0103 physical sciences symbols Atomic physics 010306 general physics Inertial confinement fusion Raman scattering |
| Zdroj: | Physical review letters. 117(23) |
| ISSN: | 1079-7114 |
| Popis: | Experiments have been performed evidencing significant stimulated Raman sidescattering (SRS) at large angles from the density gradient. This was achieved in long scale-length high-temperature plasmas in which two beams couple to the same scattered electromagnetic wave further demonstrating for the first time this multiple-beam collective SRS interaction. The collective nature of the coupling and the amplification at large angles from the density gradient increase the global SRS losses and produce light scattered in novel directions out of the planes of incidence of the beams. These findings obtained in plasmas conditions relevant of inertial confinement fusion experiments similarly apply to the more complex geometry of these experiments where anomalously large levels of SRS were measured. |
| Databáze: | OpenAIRE |
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