title: A spectroscopic study of the 3(1) pi g Rydberg state of 7Li2.
abstract: With pulsed optical-optical double resonance (OODR) fluorescence excitation spectroscopy Rydberg states of 7Li2 in the energy region of 35,500-38,000 cm-1 were studied and 146 transitions into the 3(1) pi g state of 7Li2 were measured. They were assigned to 10 vibrational levels of the 3(1) pi g state. A new set of Dunham constants, RKR potential curve, and Franck-Condon factors for the transitions form the A 1 sigma u+ state are derived. The perturbations between the 4(F)1 sigma g+, 5 (1) sigma g+, 6 (1) sigma g+, 2 (G) 1 pi g Rydberg states with the 3 (1) pi g state are discussed. The lambda-doubling splitting of the observed levels can be ignored with our accuracy (0.2 cm-1).
authors.affiliation: Department of Physics and Key Lab of Atomic and Molecular Nanosciences, Tsinghua University, Beijing 100084, China.
authors.forename: Min
authors.initials: M
authors.lastname: Song
authors.forename: Peng
authors.initials: P
authors.lastname: Yi
authors.forename: Xing-can
authors.initials: XC
authors.lastname: Dai
authors.forename: Yao-ming
authors.initials: YM
authors.lastname: Liu
authors.forename: Li
authors.initials: L
authors.lastname: Li
mesh_terms: D004735:Energy Transfer; D008094:Lithium / Q000737:chemistry*; D008433:Mathematics; D044367:Phase Transition; D013050:Spectrometry, Fluorescence / Q000379:methods*; D014732:Vibration
chemical_list: D008094:Lithium