Electronic Resource
College Park, Md.
:
American Institute of Physics (AIP)
The Journal of Chemical Physics
95 (1991), S. 7947-7951
ISSN:
1089-7690
Source:
AIP Digital Archive
Topics:
Physics
,
Chemistry and Pharmacology
Notes:
The results of a nonresonant near infrared two-photon laser spectroscopic study of the 2 1Σ+g state of 7Li2 are presented. Over 1000 rotationaly resolved 2 1Σ+g←X 1Σ+g transitions spanning 2300 cm−1 of the 2 1Σ+g potential well have been assigned and analyzed. Data from the v'=1 to v'=21 vibrational levels are used to obtain 2 1Σ+g state Dunham molecular constants as well as band-by-band constants. These data are also used to construct a Rydberg–Klein–Rees (RKR) potential which corresponds to 89% of the potential well depth. The results for the lower v' levels are in agreement with the previously determined molecular constants for v'=0 to v'=16 [J. Mol. Spectrosc. 116, 271 (1986)]. For the higher v' levels they reveal the perturbations from the 1 1Πg state. Comparisons with the results of ab initio calculations are made. In the 2 1Σ+g←X 1Σ+g nonresonant two-photon excitation only Q-branch transitions are observed with plane polarized radiation.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.461323
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