Anomalous absorption of high-energy green laser light in high- z plasmas |
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| Authors: | Glenzer S H Rozmus W Bychenkov V Yu Moody J D Albritton J Berger R L Brantov A Foord M E MacGowan B J Kirkwood R K Baldis H A Williams E A |
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| Institution: | L-399, Lawrence Livermore National Laboratory, University of California, P.O. Box 808, Livermore, California 94551, USA. |
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| Abstract: | We observe strong anomalous absorption of green laser light in mm-scale high-temperature gold plasmas. Both the laser light absorption and the resulting increase of the electron temperature, which was measured independently with Thomson scattering, have been successfully modeled by including enhanced collisions due to heat-flux driven ion acoustic fluctuations. Calculations that include only inverse bremsstrahlung significantly underestimate the experimental laser absorption and the electron temperature. |
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