Origin of NH(A3Π)-->NH(X3Σ-) Emission in Comets

Details Origin of NH(A3Π)-->NH(X3Σ-) Emission in Comets Origin of NH(A3Π)-->NH(X3Σ-) Emission in Comets

Feb 1965

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1965natur.205q.889s&link_type=abstract

Nature, Volume 205, Issue 4974, pp. 889 (1965).

Physics

6

Scientific paper

THE presence of NH radicals in the coma of comets has been generally attributed to photodissociation of ammonia. However, vacuum ultra-violet photolysis1 (1236 Å) of ammonia results in emission at 3240 Å: while the cometary emission at 3360 Å corresponds to: The energy-level diagram for NH showing the position of the states and the transitions under discussion is shown in Fig. 1. In the vacuum ultra-violet flash photolysis of ammonia2,3, the NH absorption band at 3360 Å (AΠ3 <-- X3Σ-) was observed.

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