抄録
Infrared absorption spectra of D2O ice were measured up to 140 GPa. The O-D stretching frequency rapidly decreases with pressure toward zero. The transition pressure, which could be defined as a pressure where the stretching frequency becomes zero, in D2O ice was determined to be 94 GPa. This transition pressure is higher by 26 GPa than that in H2O ice. A large difference in the transition pressure may be attributed to anharmonic contribution to the potential and consequently to the stretching vibrations.
