Solution of the Dirac equation for hydrogenlike systems exposed to intense electromagnetic pulses

Selstø, Sølve; Bengtsson, Jakob; Lindroth, Eva
Journal article, Peer reviewed
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https://hdl.handle.net/10642/4156
Date
2009
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Original version
Physical Review A. Atomic, Molecular, and Optical Physics 2009;79:043418  
Abstract
The time-dependent Dirac equation is solved numerically and compared to the corresponding prediction of the nonrelativistic Schrödinger equation for hydrogenlike systems exposed to intense laser pulses. It is found that for a correct description of effects beyond the dipole approximation, virtual electron-positron pairs can be very important. Relativistic effects in the ionization dynamics of highly charged systems are studied.