CHUANXI DUAN, RUI ZHENG, SONG LI AND GUANGMING HUANG, College of Physical Science and Technology, HuaZhong Normal University, Wuhan 430079, China.
We have observed the mid-infrared absorption spectra of D2O+ using a tunable lead-salt diode laser spectrometer with velocity-modulation technique. The D2O+ ions were generated in a water-cooled discharge of a mixture of D2O and helium. Spectra were collected in the region between 1000 and 1150 cm-1. Totally 64 lines were assigned to the 2 fundamental band of D2O+ (X2B1). Precise molecular constants have been determined.