Laser Spectroscopic Studies of the E 1£+ State of the MgO Molecule

J.J. Wang (1) , N.-T. Van-Oanh (1) , D. Bellert (1) , W.H. Breckenridge (1) , M.-A. Gaveau (2) , Eric Gloaguen (2) , B. Soep (2) , J.-M. Mestdagh (2)

1 Department of Chemistry
2 LFP - URA 2453 - Laboratoire Francis PERRIN

The E1Σ+ ‘Rydberg' state of 24Mg16O has been characterized by two-color resonance-enhanced two-photon ionization (R2PI) spectroscopy in the 36 000–40 000 cm−1 region. Several rotationally resolved bands, assigned consistently to 24Mg16O(E1Σ+←X1Σ+) vibronic transitions, have been analyzed. The effective Bv′(v′=0−8) constants determined exhibit an unusual variation with v′. Possible causes of this variation are discussed. Estimated spectroscopic constants for the E1Σ+ state are reported.

Domaines: Chimie théorique et/ou physique

J.J. Wang, N.-T. Van-Oanh, D. Bellert, W.H. Breckenridge, M.-A. Gaveau, et al.. Laser Spectroscopic Studies of the E 1£+ State of the MgO Molecule. Chemical Physics Letters, 2004, 392, pp.62-67. ⟨10.1016/j.cplett.2004.04.083⟩. ⟨hal-00085000⟩