Improved infrared and visible emission spectra of the H3 and D3 molecules |
| |
Authors: | M Vervloet |
| |
Institution: | a Laboratoire de Photophysique Moléculaire du CNRS, Bâtiment 350, Université de Paris-Sud, 91405 Orsay, France b Steacie Institute for Molecular Sciences, National Research Council of Canada, 100 Sussex Drive, Room 1065, Ottawa, Ont., Canada K1A 0R6 |
| |
Abstract: | Better-resolved Rydberg-Rydberg emission spectra of the neutral H3 and D3 molecules in the infrared and visible regions, with less interference from H2 and D2 emission, have been obtained by using a Droege-Engelking type of corona discharge source. Using nlλ notation, the lower electronic states are 3p1 in the infrared and 2p0 in the visible, and the upper electronic states are mixed (3s,3p0,3d0,3d1,3d2) states. In particular, a line near 16 842 cm−1 in H3, previously obscured by an H2 line, reveals a (3s,3d) interaction that is confirmed by other lines. The spectra are analysed including this interaction. However, fits to effective Hamiltonians still have relatively large standard deviations, probably partly due to poor convergence of the rotational expansions and partly due to many small perturbations of the levels by background states. |
| |
Keywords: | |
本文献已被 ScienceDirect 等数据库收录! |
|