Perturbation between the G1Πg and 21Δg states of 7Li2

Jianyuan Shang, Jianbing Qi, Li Li, A. Marjatta Lyyra

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


We have observed the rotational levels in the ν = 2, 3, 5, 6, 7, and 8 vibrational manifolds of the 21Δg state of 7Li2 via the A1Σu+ intermediate levels by δΛ = 2 transitions. This violation of the δΛ = 0, ±1 selection role is due to the interaction with the G1Πg state. Band-by-band deperturbations of the G1Πg to approximately 21ΔgΠ, νΔ) = (11, 2), (12, 3), (15, 5), (16, 6), (18, 7), and (19, 8) bands have been performed. Deperturbed molecular constants and rotational-electronic interaction parameters are reported here.

Original languageEnglish (US)
Pages (from-to)255-263
Number of pages9
JournalJournal of molecular spectroscopy
Issue number2
StatePublished - Oct 2000

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics
  • Spectroscopy
  • Physical and Theoretical Chemistry


Dive into the research topics of 'Perturbation between the G1Πg and 21Δg states of 7Li2'. Together they form a unique fingerprint.

Cite this