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Symmetry effects in the electronic spectrum of ammonia at low temperature
Author(s) -
Engelking P. C.,
Vaida V.
Publication year - 1987
Publication title -
international journal of quantum chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.484
H-Index - 105
eISSN - 1097-461X
pISSN - 0020-7608
DOI - 10.1002/qua.560310109
Subject(s) - alternation (linguistics) , symmetry (geometry) , supersonic speed , spectral line , ammonia , absorption spectroscopy , chemistry , spectrum (functional analysis) , atomic physics , intensity (physics) , physics , molecular physics , quantum mechanics , thermodynamics , mathematics , organic chemistry , philosophy , linguistics , geometry
A band intensity alternation has been observed in the absorption spectra to the à 1 A 2 ″state of NH 3 and ND 3 cooled in supersonic expansions. The nuclear statistical explanation for this interesting effect is given here.