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Abstract
A rotational and vibrational analysis has been made of the ND2
–
emission spectrum produced from the ultraviolet laser induced dissociation of both jet cooled and room temperature deuterated ammonia. By a combination of these experimental data with model calculation based upon the stretch-bender Renner–Teller Hamiltonian, and a previous analysis of the NH2 spectrum, most of the strong features in the emission spectra have been assigned. The spectrum consists of transitions from a narrow distribution of high angular momentum states peaking at K
a
values of 7 in the jet condition, and 8 at room temperature. Information has also been gained on the high angular momentum states of previously inaccessible higher bending levels from v
2 = 2 to v
2 = 6 in the
state.
Acknowledgements
The experimental measurements were carried out at JILA by the group of S.R. Leone. We would like to thank him and his colleague R.A. Loomis for permission to use their data. Both of us have benefited from discussions with both S.R. Leone and R.A. Loomis in JILA at earlier stages of this analysis. We are also very grateful to Alex Alijah for all his help in developing the stretch-bender Renner–Teller model and computer code used here.