Absorption of ultra-intense laser pulses
S. C. WilksUniversity of California, Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94550W. L. KruerUniversity of California, Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94550M. TabakUniversity of California, Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94550A. B. LangdonUniversity of California, Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94550
1992en
ABI
Аннотация
We use simulations to investigate the interaction of ultra-intense laser pulses with a plasma. With an intensity greater than ${10}^{18}$ W/${\mathrm{cm}}^{2}$, these pulses have a pressure greater than ${10}^{3}$ M bar and drive the plasma relativistically. Hole boring by the light beam is a key feature of the interaction. We find substantial absorption into heated electrons with a characteristic temperature of order the pondermotive potential. Other effects include a dependence on the polarization of the incident light, strong magnetic field generation, and a period of intense instability generation in the underdense plasma.
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