Near-threshold continuum structure and the dissociation energies of, HD, and
- 1 July 1993
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review A
- Vol. 48 (1), R18-R21
- https://doi.org/10.1103/physreva.48.r18
Abstract
Using laser double-resonance spectroscopy, we have studied the second dissociation limit of all three stable isotopic variants of molecular hydrogen. Just above threshold, the vibrational continuum exhibits considerable fine-grained structure, differing greatly between isotopes because of varying nonadiabatic couplings between the B, B’, and C states. Significantly improved values of the dissociation energies are obtained from the continuum onsets. We also report preliminary investigations of atomic 2S:2P branching ratios very near threshold.Keywords
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