Table of Contents
Laser Chemistry
Volume 1, Issue 5, Pages 343-355

C.W. Optical–Optical Double Resonance in /2: Hyperfine Structure in the E 0g+ B 0u+ System

1Laboratoire de Spectrométrie Ionique et Moléculaire, Université Lyon I, 43 Boulevard du 11 Novembre 1918, Villeurbanne 69622, France
2Laboratoire de Spectrométrie Physique, Université Scientifique et Médicale de Grenoble, BP 53X, Grenoble Cedex 38041, France

Copyright © 1983 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Hyperfine structure for several E(0g+)–B(0u+) rovibrational transitions has been measured for the first time. Two single frequency lasers were used to excite E(0g+)(υ*, J*)–B(0u+)(υ′, J′) – X(1Σg+)(υʺ, Jʺ) transitions which result in Doppler-free E(0g+)(υ*, J*)–B(0u+)(υ′, J′) fluorescence excitation spectra. Hyperfine parameters are obtained for E(0g+)υ = 11 (eQq = +483±4 MHz, C = –210±3 kHz) and E(0g+)υ = 8 (eQq = +492.3±2.5 MHz, C = –205±3 kHz). The non-zero C constant is shown to arise from mixing with a nearby 1g state and the eQq constant shows the 3P2(I+) origin of the E(0g+) state.