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J. HAN, G. KERENSKAYA AND M. C. HEAVEN, Department of Chemistry, Emory University, Atlanta, GA 30322.
The NH-He van der Waals complex was characterized via laser excitation of bands associated with the NH A3
-X 3
- transition. It was demonstrated that the ground state supports a bound level with a rotational constant of B''= 0.334(2) cm-1. These results are in agreement with the predictions of recent high-level theoretical calculations. Spin-orbit predissociation of the excited complex was observed, and the spectra yield insights regarding the NH(A)+He potential energy surfaces.
Features of the OH-He complex have been observed in conjunction with the A2
+ - X2
~0 - 0 transition. The partially resolved bands have been interpreted using the theoretical results of Lee, McCoy, Toczylowski and Cybulski (JCP, 113, 5736, (2000)).