Theoretical transition dipole moments and lifetimes for the A /sup 1/. sigma. /sup +//sub u/. -->. X. sigma. /sup +//sub g/ system of Na/sub 2/
Multiconfiguration self-consistent field (MCSCF) calculations have been carried out on the X /sup 1/..sigma../sup +//sub g/, A /sup 1/..sigma../sup +//sub u/, and B /sup 1/Pi/sub u/ states of Na/sub 2/. The calculated potential energy curves are in good agreement with the experimental X and A RKR curves of Hessel and Kusch. Both the A..-->..X and B..-->..X transition moments have been calculated as a function of nuclear separation using MCSCF wavefunctions. These calculations are in excellent agreement with the recent experimental determinations of the B..-->..X transition moment. A values and lifetimes of several A-state vibrational and rotational levels for the A..-->..X transition have been calculated using the theoretical transition moment and the experimental potential curves of Hessel and Kusch. These again are in excellent agreement with the recently measured lifetimes. (AIP)
- Research Organization:
- Laser Physics Section, National Bureau of Standards, Boulder, Colorado 80302
- OSTI ID:
- 7226075
- Journal Information:
- J. Chem. Phys.; (United States), Vol. 66:4
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
42 ENGINEERING
GAS LASERS
SODIUM
SPECTRA
ENERGY LEVELS
ENERGY-LEVEL TRANSITIONS
LIFETIME
OSCILLATOR STRENGTHS
SELF-CONSISTENT FIELD
STIMULATED EMISSION
ALKALI METALS
ELEMENTS
EMISSION
LASERS
METALS
640300* - Atomic
Molecular & Chemical Physics
420300 - Engineering- Lasers- (-1989)