Optical-Optical Double-Resonance Excitation Spectra of the (6d)1Δg and (7d)1Δg Rydberg States in Na2

✍ Scribed by Y.L. Pan; S. Dianping; L.S. Ma; D. Liangen; Z.G. Wang

• Publisher: Elsevier Science
• Year: 1995
• Tongue: English
• Weight: 294 KB
• Volume: 169
• Category: Article
• ISSN: 0022-2852
• DOI: 10.1006/jmsp.1995.1044

✦ Synopsis

The levels with (v \leqslant 14,27 \leqslant J \leqslant 57) in the ((6 d)^{\prime} \Delta_{g}) and ((7 d)^{\prime} \Delta_{g}) Rydberg states of (\mathrm{Na}{2}) have been observed using optical-optical double resonance (OODR) fluorescence excitation spectroscopy. The intermediate levels in the (B^{1} \Pi{u}) state are identified by numerical calculations with the molecular constants for (B^{1} \Pi_{u} \leftarrow X^{1} \Sigma_{g}^{+})transitions and confirmed by the complementary (A^{\prime} \Sigma_{u}^{+} \leftarrow X^{\prime} \Sigma_{g}^{+})polarization spectra. Absolute vibrational numberings of the ((6 d)^{1} \Delta_{g}) and ((7 d)^{1} \Delta_{g}) states are determined by comparing the observed OODR excitation intensities of transitions ({ }^{1} \Delta_{g} \leftarrow) (B^{\prime} \Pi_{u}) with that of the simulated Franck-Condon factors. The Dunham coefficients and the Rydberg-Klein-Rees (RKR) potential energy curves of the ( (6 d)^{\prime} \Delta_{R}) and (7d) ({ }^{\prime} \Delta_{R}) states are reported. (c) 1995 Academic Press. Inc.