D.M. Hartley and P.J. Rous, Tunneling Theory of Negative Ion Decay at Surfaces,
<i>Surface Science</i> <b>341</b> 213 (1995).
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Abstract:  A tunneling theory of negative ion formation in adsorbed
molecules is developed.  This theory enables
the lifetime of an adsorbate negative ion to be estimated from
the probability current flowing through the different angular
momentum decay channels. The results of this theory are compared
to the lifetimes of O2- on
Pt(111) and N2- on Ag(111) calculated from the
resonance poles by a LKKR method.
Maps of the resonance lifetime calculated  as a function of lateral
position of
the molecule are found to be in good agreement with the LKKR method.   
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