Infrared spectra of 4HeH+, 4HeD+, 3HeH+, and 3HeD+

15 November 1989

journal article
research article
Published by AIP Publishing in The Journal of Chemical Physics

Vol. 91 (10) , 5882-5886
https://doi.org/10.1063/1.457456

Abstract

Isotopic species of the HeH⁺ molecular ion provide an excellent testing ground for studying isotopic dependence of vibration–rotation constants because of the small masses of He and H isotopes. We have observed infrared spectra of the hot band v=2←1 of HeH⁺ and fundamental bands of isotopic species HeD⁺, ³HeH⁺, and ³HeD⁺, and obtained the Dunham coefficients Y_kl, and the isotopically independent parameters U_kl, Δ^He_kl, and Δ^H_kl.

Keywords

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