Doubly excited 21Δa state of Na2

Thou Jen Whang, Hui Wen Wu, Ray Yuan Chang, Chin Chun Tsai

研究成果: Article同行評審

15 引文 斯高帕斯(Scopus)


The doubly excited valence (3p + 3p)2 1Δg state of Na2 is experimentally observed by using optical-optical double resonance spectroscopy. A single line Ar+ laser (a total of nine lines) was used to pump the sodium dimers from thermally populated ground state X 1Σg+ to the intermediate B 1Πu state. Then, a single mode Ti:sapphire laser was used to probe the doubly excited 2 1Δg state. Violet fluorescence emitted from the highly excited states (mainly 2 3Πg or 3 3Πg states which are transferred from 2 1Δg state via collision) to the a3u+ state was monitored by a filtered photomultiplier tube (PMT). A total of 582 rovibrational levels of 2 1Δg state were observed, identified, and assigned to the vibrational and rotational quantum numbers in the range of 0≤v v ≤28 and 11≤J≤99, respectively. The absolute vibrational quantum number assignment was verified by comparing the totally resolved fluorescence with the calculated Franck-Condon factors between 2 Δg state and B 1Πu state. Dunham coefficients and Rydberg-Klein-Rees potential curve were derived from these observed quantum levels. The primary molecular constants of Na2 2 1Δg state are Te = 32416.759(15) cm-1, ωe = 124.8484(36) cm-1, Be = 0.119 158(3) cm-1, and Re = 3.508 20(5) Å.

頁(從 - 到)10513-10518
期刊Journal of Chemical Physics
出版狀態Published - 2004 12月 1

All Science Journal Classification (ASJC) codes

  • 一般物理與天文學
  • 物理與理論化學


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