Morse Franck--Condon factors and R-centroids for some Lyman bands of H/sub 2/, HD, and D/sub 2/. [Lifetimes, transitions]
Using new rotational and vibrational constants, Morse Franck-Condon factors and r-centroids are computed for 108 Lyman bands of astrophysical importance H/sub 2/, HD and D/sub 2/ molecules. Experimental oscillator strengths conjoint with Morse Franck--Condon Factors for six Lyman bands of molecular hydrogen yield radiative lifetimes for v = 0 to 5 levels of the B /sup 1/SIGMA/sup +//sub u/ state that are inconsistent with the experimental lifetime measurements. The limitation of analytic Morse function in the region of small internuclear separation for the B /sup 1/SIGMA/sup +//sub u/ state of H/sub 2/ is discussed. The r-centroids (r/sub v'v''/) are found to increase with frequencies of the Lyman bands of H/sub 2/, HD and D/sub 2/. For a sequence, ..delta..r identical with r/sub v'+1,v''+1/ -- r/sub v'v''/ is constant. A comparison of r/sub v'v''/ values of the Lyman bands shows that r/sub v'v''/ of the band (v'v'') increases in going from H/sub 2/ to D/sub 2/.
- Research Organization:
- T.N.B. Coll., Bhagalpur, India
- OSTI ID:
- 7313180
- Journal Information:
- Spectrosc. Lett.; (United States), Journal Name: Spectrosc. Lett.; (United States) Vol. 9:12; ISSN SPLEB
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
Molecular & Chemical Physics-- Atomic & Molecular Properties & Theory
74 ATOMIC AND MOLECULAR PHYSICS
CRYOGENIC FLUIDS
DEUTERIDES
DEUTERIUM
DEUTERIUM COMPOUNDS
ELEMENTS
EMISSION SPECTRA
ENERGY LEVELS
ENERGY-LEVEL TRANSITIONS
EXCITED STATES
FLUIDS
FRANCK-CONDON PRINCIPLE
FREQUENCY DEPENDENCE
HYDROGEN
HYDROGEN COMPOUNDS
HYDROGEN DEUTERIDE
HYDROGEN ISOTOPES
ISOTOPES
LIFETIME
LIGHT NUCLEI
LYMAN LINES
NONMETALS
NUCLEI
ODD-ODD NUCLEI
OSCILLATOR STRENGTHS
ROTATIONAL STATES
SPECTRA
STABLE ISOTOPES
VIBRATIONAL STATES