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Vibrational Structure of the (2)1Σ+u–X(1)1Σ+gTransition of the Ba2Molecule

✍ Scribed by M.A. Lebeault; J. Viallon; V. Boutou; J. Chevaleyre

Publisher
Elsevier Science
Year
1998
Tongue
English
Weight
173 KB
Volume
192
Category
Article
ISSN
0022-2852

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✦ Synopsis

Resonant two photon ionization (R2PI) technique was used to obtain the excitation spectrum of the Ba 2 molecule. A group of 12 vibrational bands was found in the 740 -764 nm region. As a result of mass selective detection, they were attributed unambiguously to the Ba 2 molecule. By comparison to recent theoretical calculations, those bands were assigned to the (2) 1 ⌺ u ϩ -X(1) 1 ⌺ g ϩ transition; they may be fitted to give the following vibrational constants (in cm Ϫ1 ): Љ e ϭ 33.2 Ϯ 0.2, Љ e xЉ e ϭ 0.5 Ϯ 0.2, e ϭ 65.2 Ϯ 0.2, and Ј e xЈ e ϭ 0.4 Ϯ 0.2.

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