The third and fourth 1Δg states of Na2: A pair of twins

Wei Xiang Chen, Ray Yuan Chang, Thou Jen Whang, Chanchal Chaudhuri, Chin Chun Tsai

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


The 31Δg and 41Δg Rydberg states of Na2, which dissociate to Na(3s) + Na(4d) and Na(3s) + Na(4f), respectively, have been observed by using high-resolution cw optical-optical double resonance spectroscopy. The potential minima of these two states are separated by 129.74 cm-1 and they have an avoided crossing at 4.09 Å implying significant interaction making them a pair of twins. The results of our observation agree very well with the ab initio calculations.

Original languageEnglish
Pages (from-to)29-34
Number of pages6
JournalChemical Physics Letters
Issue number1-3
Publication statusPublished - 2007 May 4

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry


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