Introduces a simple model of laser-induced negative ion photodetachment, incorporating the Wigner power law, in order to discuss non-perturbatively the effects of strong exciting laser fields near to threshold. The authors find that the threshold can be smeared out and shifted slightly, as might be expected. More interesting is the possibility of observing power law (t -3 ) and other deviations from the exponential decay of bound electron probability near to threshold.
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Rza̧żewski et al. (1982) studied this question.
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