CHARACTERIZATION OF THE (E)OVER-TILDE'(1)A'(1) RYDBERG STATE OF AMMONIA BY RESONANCE-ENHANCED MULTIPHOTON IONIZATION SPECTROSCOPY

Authors
ASHFOLD MNR WESTERN CM HUDGENS JW JOHNSON RD
Citation
Mnr. Ashfold et al., CHARACTERIZATION OF THE (E)OVER-TILDE'(1)A'(1) RYDBERG STATE OF AMMONIA BY RESONANCE-ENHANCED MULTIPHOTON IONIZATION SPECTROSCOPY, Chemical physics letters, 260(1-2), 1996, pp. 27-33
Citations number
34
Categorie Soggetti
Physics, Atomic, Molecular & Chemical
Journal title
Chemical physics letters → ACNP
ISSN journal
00092614
Volume
260
Issue
1-2
Year of publication
1996
Pages
27 - 33
Database
ISI
SICI code
0009-2614(1996)260:1-2<27:COT(RS>2.0.ZU;2-2
Abstract
Progression of bands associated with the nu(2) (bending) vibrational m ode of the (E) over tilde'(1)A'(1) (4pa ''(2) <-- 3a(1)) Rydberg state s of both NH3 and ND3 have been observed as two-photon resonances in t he multiphoton ionisation spectrum of these two isotopomers at excitat ion wavelengths in the range 275-248 nm. Band contour analysis yields excited state spectroscopic parameters and some insight into the predi ssociation behaviour of these levels, all of which show many parallels with previous knowledge concerning the (C) over tilde'(1)A'(1) Rydber g state of ammonia (arising from the corresponding 3pa ''(2) <-- 3a(1) orbital promotion).