High orbital angular momentum states in H sub 2 and D sub 2. III. Singlet--triplet splittings, energy levels, and ionization potentials
- Laboratoire de Photophysique Moleculaire du CNRS, Universite de Paris-Sud, 91405 Orsay (France)
- National Research Council of Canada, 100 Sussex Drive, Ottawa K1A 0R6 (Canada)
The 5{ital g}--4 {ital f} Rydberg groups of H{sub 2} and D{sub 2} first studied in paper I have been obtained with a tenfold increase in resolution which made it possible to resolve the singlet from the triplet components. As a result we can now establish separately precise values for the energy levels in the triplet and singlet systems. For this purpose we have remeasured a number of transitions between the lower energy levels for which at present only old measurements are available. In particular we obtain accurate values for the energies of the lowest (stable) triplet state {ital a}{sup 3}{Sigma}{sup +}{sub {ital g}} relative to the singlet ground state, as well as of the ionization potential. The values obtained for the former are more accurate than obtained from singlet--triplet anticrossings while the latter are of similar accuracy as those reported recently by McCormack {ital et} {ital al}. (Phys. Rev. A {bold 39}, 2260 (1989)) and fit well within this accuracy with the most recent {ital ab} {ital initio} values.
- OSTI ID:
- 6513977
- Journal Information:
- Journal of Chemical Physics; (USA), Vol. 93:4; ISSN 0021-9606
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
DEUTERIUM
INFRARED SPECTRA
RYDBERG STATES
HYDROGEN
ELECTRONIC STRUCTURE
IONIZATION POTENTIAL
ORBITAL ANGULAR MOMENTUM
ANGULAR MOMENTUM
ELEMENTS
ENERGY LEVELS
EXCITED STATES
HYDROGEN ISOTOPES
ISOTOPES
LIGHT NUCLEI
NONMETALS
NUCLEI
ODD-ODD NUCLEI
SPECTRA
STABLE ISOTOPES
640302* - Atomic
Molecular & Chemical Physics- Atomic & Molecular Properties & Theory