Predissociation lifetime of the 1σ
g
2
2σ
g
diabatic state of He
2
+
: a one-channel approach |
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Authors: | Aristophanes Metropoulos |
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Institution: | (1) Theoretical and Physical Chemistry Institute, The National Hellenic Research Foundation, 48 Vassileos Constantinou Avenue, 11635 Athens, Greece |
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Abstract: | Summary This work is concerned with the application of a one-channel model to obtaining predissociation lifetimes and transition rates in a system of crossing diabatic states. The calculation focuses on the first shape resonance of the 1
g
2
2
g
diabatic state of He
2
+
, which is relatively stable with respect to tunneling. This resonance predissociates as a result of the 1
g
2
2
g
state being crossed by the 1
g
1
u
2
dissociative diabatic state near the resonance level. We have estimated its predissociation lifetime to be of the order of 10–11 s. |
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Keywords: | Diabaticity Predissociation Lifetime He
2
+ |
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