Zero- and Nonzero-Nuclear-Spin Isotope Response in ResonantlyEnhanced Multiphoton Ionization of Kr nd Xe With Broad BandLasers
1993
The abundance of the 83Kr isotope, determined by ion mass analysis following three photon resonant
four photon ionization via the 5s’ [1/2]1 state with a broadband laser is found to differ from the expected
natural value. This effect is discussed in terms of a change of the ionization response due to the decay
of coherence in the intermediate state to its hyperfine structure coupling. The nonzero nuclear spin
isotopes of Xe have not shown any effect of this type in three different ionization schemes under the
present experimental conditions.
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