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Electronic structure of YN: the X1Σ+ ground state and the a3Σ+ and A1Σ+ excited states

✍ Scribed by Zygmunt J. Jakubek; S.G. Nakhate; Benoit Simard

Publisher
Elsevier Science
Year
2003
Tongue
English
Weight
210 KB
Volume
219
Category
Article
ISSN
0022-2852

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✦ Synopsis

YN molecules have been produced in a pulsed free jet apparatus by laser vaporizing yttrium metal in the presence of He doped with NH 3 . Laser induced dispersed fluorescence spectra have been studied. Previously unobserved low-energy excited state, a 3 R þ , has been discovered. RKR potential curves of the X 1 R þ ground state as well as of the A 1 R þ and a 3 R þ excited states have been determined. Harmonic wavenumbers have been measured to be equal to: 633.2(10), 1007.4(25), and 805:12ð63Þ cm À1 for the X 1 R þ , A 1 R þ , and a 3 R þ states, respectively.

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