ISSN:
1089-7690
Source:
AIP Digital Archive
Topics:
Physics
,
Chemistry and Pharmacology
Notes:
Excitation spectra for the 4pπ 3Πg–a 3Σu〈sup ARRANGE="STAGGER"〉+ system in 20Ne2 and 22Ne2 have been used to characterize the v=0 through v=3 levels in both electronic states. This is the first time levels with v〉1 have been characterized experimentally in either dimer. Rotational analyses lead to Be- and αe-values of 0.5638 cm−1 and −0.9000×10−2 cm−1 and of 0.5113 cm−1 and −0.6651×10−2 cm−1 for the a 3Σu〈sup ARRANGE="STAGGER"〉+ states in 20Ne2 and 22Ne2, respectively. The Be- and αe-values are, respectively, 0.5716 cm−1 and −0.6429×10−2 cm−1 (20Ne2) and 0.5201 cm−1 and −0.4172×10−2 cm−1 (22Ne2) for the 4pπ 3Πg state. The vibrational parameters ωe, xωe are found to be 556.2, 10.2 cm−1, and 593.2, 7.5 cm−1 for the a 3Σu〈sup ARRANGE="STAGGER"〉+ state and 4pπ 3Πg state, respectively, in 20Ne2 with corresponding values of 529.5, 9.75 cm−1, and 567, 7.5 cm−1 in 22Ne2. The observed vibrational level differences [ΔG(v+1/2)-values] for the 4pπ 3Πg state are within 0.5% of analogous spacings for the ground electronic state (X 2Σu〈sup ARRANGE="STAGGER"〉+) of Ne2〈sup ARRANGE="STAGGER"〉+ reported by Kim et al. [Phys. Rev. Lett. 68, 1311 (1992)]. © 2001 American Institute of Physics.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.1388902
