Electron-positron pair creation by powerful laser-ion interaction |
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Authors: | K Krajewska J Z Kamiński F Ehlotzky |
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Institution: | (1) Institute of Theoretical Physics, Warsaw University, Hoza 69, 00-681 Warszawa, Poland;(2) Institute for Theoretical Physics, University of Innsbruck, Technikerstrasse 25, A-6020 Innsbruck, Austria |
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Abstract: | Presently available high-power laser pulses of ponderomotive energy U p ? 2mc 2 should permit the fundamental processes of quantum electrodynamics in such fields, in particular, the formation of electron-positron pairs in impacts of laser pulses with highly charged ions, to be observed. We evaluate the highly nonlinear production rates of this process and investigate the most favorable conditions of pair production, in particular, either along the direction of linear polarization or in the propagation direction of the laser pulse. For femtosecond radiation pulses, it is possible to represent the laser beam by a monochromatic and linearly polarized electromagnetic plane wave. This approximation considerably simplifies the calculations required. |
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