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Electron acceleration by an intense short-pulse laser in underdense plasma
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| Abstract |
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| Electron acceleration from the interaction of an intense short-pulse laser with low density plasma is considered. The relation between direct electron acceleration within the laser pulse and that in the wake is investigated analytically. The magnitude and location of the ponderomotive-force-caused charge separation field with respect to that of the pulse determine the relative effectiveness of the two acceleration mechanisms. It is shown that there is an optimum condition for acceleration in the wake. Electron acceleration within the pulse dominates as the pulse becomes sufficiently short, and the latter directly drives and even traps the electrons. The latter can reach ultrahigh energies and can be extracted by impinging the pulse on a solid target. (C) 2003 American Institute of Physics. | | |
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English
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Physics of plasmas. - Woodbury, N.Y. | |
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Woodbury, N.Y. : 2003
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1070-664X
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10:6(2003), p. 2468-2474
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000183316500031
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