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- W2033765686 abstract "The X2Σ+, A2Σ+ and B2II wavefunctions of the HeH molecule are calculated as single configurations state functions built from molecular orbitals generated by the Fock operator of the HeH+ ion. Dipole transition moments and non-adiabatic coupling matrix elements are evaluated in order to study the competition between dissociative photoemission and predissociation of the A and B states. Particular attention is paid to the X-A (2σ–3σ) avoided crossing and comparisons are made between its characteristics and those of the corresponding 21Σ+–31Σ+ (2σ–3σ) avoided crossing in the HeH+ ion. The predissociation lifetime of the A state is found to be of the order of 10−13 s which precludes its decay via dissociative photoemission in agreement with the analysis of recent translational spectroscopy experiments. The predissociation lifetime of the B state is found to be of the same order of magnitude as its radiative lifetime (i.e. of the order of a few 10−8 s). It is still not understood why this state would radiate rather than predissociate as has been inferred from experiment." @default.
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- W2033765686 date "1987-11-01" @default.
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- W2033765686 title "Decay of the A2Σ+ and B2II quasibound states of HeH" @default.
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- W2033765686 doi "https://doi.org/10.1016/0301-0104(87)80194-5" @default.
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