CO 2 and N 2O laser Stark spectroscopy of the ν1 band of the ClO 2 radical

Abstract

The ν 1 fundamental band of the ClO 2 radical has been studied by means of the 10.6-μm CO 2 and N 2O laser Stark spectroscopy. More than 250 and 150 Stark resonances were assigned for the 35ClO 2 and 37ClO 2 species, respectively, and were analyzed together with the recent microwave and laser-microwave double resonance results to give molecular constants including spin-rotation interaction constants. The ν 1 band origins and electric dipole moments both in the ground and ν 1 states were determined accurately 35ClO 2 37ClO 2 ν 0 945.592 357(60) 939.602 909(66) cm −1 μ′ 1.788 39(13) 1.788 46(15) D μ″ 1.791 95(10) 1.792 10(13) D δμ −0.003 56(18) −0.003 64(26) D where standard deviations are given in parentheses. The molecular constants are consistent between the two isotopic species, and are also consistent with the results of the LMR and lasermicrowave double resonance experiments.