NUCLEAR HYPERFINE INTERACTIONS AND DYNAMIC STATE OF H2O IN AR-H2O

Rotational spectra for the Ar-H2O dimer have been measured with the Balle/Flygare Mark II pulsed nozzle, Fourier transform microwave spectrometer. The present study extends that of Fraser et al. [J. Mol. Spectrosc. 144, 97 (1990)] to higher resolution, enabling analysis of the hyperfine structure and spin statistics for the SIGMA(0(00)) and SIGMA(1(01)) internal rotor states of water in Ar-H2O and Ar-D2O and of the SIGMA(0(00)) state in Ar-HDO. The results indicate the two internal rotor states to be quite similar, especially for Ar-D2O.