Measurements ofT1andT2relaxation cross sections for HDO

摘要

Rotational relaxation cross sections for the 220, 221, and superposition states of HDO were measured using a beam maser spectrometer. Scattering gases used were H2O, D2O, HDO (50percnt;), HCl, CH3F, NH3, OCS, CO2, N2, and Ar. For HDOndash;NH3scattering, pure state cross sections were much larger than the superposition state cross section. For other scattering gases, pure state cross sections were slightly larger than the superposition state cross section.