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Quantum-electrodynamical approach to multiphoton ionization in the high-intensity field

Technical Report ·
OSTI ID:5666883
The development of high-power lasers has made it possible to achieve light intensities of the order of one atomic unit. At these field strengths relativistic effects become important. It is thus of interest to study multiphoton ionization from the point of view of quantum electrodynamics (QED). In recent work Filipowicz (1985) obtained the solution of the Dirac equation for an electron interacting with a quantized electromagnetic plane wave. He also discussed the non-quantum limit of this solution. The authros here solve the Dirac equation for an electron interacting with a quantized and elliptically polarized electromagnetic field. The use the solution to obtain a relativistic S-matrix amplitude for multiphoton ionization in the high-intensity limit. Its non-relativistic limit is also derived and is used to construct a multiphoton transition-rate formula which is compared with previous results.
Research Organization:
Oregon Univ., Eugene, OR (USA). Dept. of Physics
OSTI ID:
5666883
Report Number(s):
AD-A-209082/7/XAB
Country of Publication:
United States
Language:
English

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