Phys. Rev. A 53, 2881–2884 (1996)Effect of continuum-continuum and quasibound-continuum above-threshold transitions on (1+1)-photon resonance-enhanced multiphoton autoionizationReceived 27 October 1995; published in the issue dated April 1996 We have studied the effect of above-threshold transitions on the (1+1)-photon resonance-enhanced ionization and autoionization processes. We have shown that the effect of the photoionization decay of the autoionizing (AI) state to the higher continuum becomes dominant when the photoionization width of the AI state is comparable to or larger than the autoionization width to within an order of magnitude, i.e., for the intermediate range of laser intensity. The continuum-continuum coupling and the higher-order transitions become effective only for much higher values of the above-threshold transition strengths, i.e., for much higher values of the laser intensity. © 1996 The American Physical Society. © 1996 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevA.53.2881
DOI:
10.1103/PhysRevA.53.2881
PACS:
32.80.Rm
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