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Characterisation of the Ẽ′1A′1 Rydberg state of ammonia by resonance enhanced multiphoton ionisation spectroscopy

✍ Scribed by M.N.R. Ashfold; C.M. Western; J.W. Hudgens; R.D. Johnson III

Publisher
Elsevier Science
Year
1996
Tongue
English
Weight
572 KB
Volume
260
Category
Article
ISSN
0009-2614

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✦ Synopsis

Progression of bands associated with the v 2 (bending) vibrational mode of the F.'l,( 1 (4pa'~ ~ 3a l) Rydberg states of both NH 3 and ND 3 have been observed as two-photon resonances in the multiphoton ionisation spectrum of these two isotopomers at excitation wavelengths in the range 275-248 nm. Band contour analysis yields excited state spectroscopic parameters and some insight into the predissociation behaviour of these levels, all of which show many parallels with previous knowledge concerning the C'I.~ 1 Rydberg state of ammonia (arising from the corresponding 3pa'~ *--3a I orbital promotion).

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