High resolution study of the ν1+ν2 and ν2+ν3 vibration—rotation bands of H2Se

Abstract

High resolution spectra of H₂Se ν₁+ν₂ and ν₂+ν₃ bands have been recorded and analysed in natural isotopic abundance. The vibration—rotation transitions of H₂ⁿSe (n = 82, 80, 78, 77, 76 and 74) are assigned by using ground state combination differences and are least-squares fitted to give rise to the vibration—rotation parameters. The isotope effect is discussed.