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Microwave and millimeter-wave spectrum of the He ? ? ? H2+ long-range complex

Microwave and millimeter-wave spectrum of the He ? ? ? H2+ long-range complex
Microwave and millimeter-wave spectrum of the He ? ? ? H2+ long-range complex
The microwave and millimeter-wave spectrum of HeH2+ is reported over the frequency range 6-170 GHz. The observation of hyperfine structure in the spectra of some transitions made a clear distinction between the ortho- and para-hydrogen in the molecular ion. The hyperfine structure and double resonance Zeeman studies have enabled estimates of the quantum numbers involved in the transitions to be made. The Zeeman pattern in a 21.8 GHz doublet has been analyzed using an effective spin Hamiltonian with a case (B) basis set. This suggests an assignment of ?N=+1, N=10 ? N=11. A similar analysis, in an extended hyperfine basis set, for the 15.2 GHz transition suggests an assignment of either ?N=0, N=3, or N=4 as appropriate assumption from which to refine the potential.
spectroscopy, ion
0021-9606
6072-6078
Gammie, David I.
77a32654-1e07-4ce3-97b8-68a23535c285
Page, Josephine C.
994e6f96-9657-4a9d-8b88-a014fd49bdfc
Shaw, Andrew M.
3a405da8-4dec-4c93-a378-479a4cc35cfc
Gammie, David I.
77a32654-1e07-4ce3-97b8-68a23535c285
Page, Josephine C.
994e6f96-9657-4a9d-8b88-a014fd49bdfc
Shaw, Andrew M.
3a405da8-4dec-4c93-a378-479a4cc35cfc

Gammie, David I., Page, Josephine C. and Shaw, Andrew M. (2002) Microwave and millimeter-wave spectrum of the He ? ? ? H2+ long-range complex. Journal of Chemical Physics, 116 (14), 6072-6078. (doi:10.1063/1.1458248).

Record type: Article

Abstract

The microwave and millimeter-wave spectrum of HeH2+ is reported over the frequency range 6-170 GHz. The observation of hyperfine structure in the spectra of some transitions made a clear distinction between the ortho- and para-hydrogen in the molecular ion. The hyperfine structure and double resonance Zeeman studies have enabled estimates of the quantum numbers involved in the transitions to be made. The Zeeman pattern in a 21.8 GHz doublet has been analyzed using an effective spin Hamiltonian with a case (B) basis set. This suggests an assignment of ?N=+1, N=10 ? N=11. A similar analysis, in an extended hyperfine basis set, for the 15.2 GHz transition suggests an assignment of either ?N=0, N=3, or N=4 as appropriate assumption from which to refine the potential.

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More information

Published date: 8 April 2002
Keywords: spectroscopy, ion
Organisations: Chemistry

Identifiers

Local EPrints ID: 19740
URI: http://eprints.soton.ac.uk/id/eprint/19740
ISSN: 0021-9606
PURE UUID: 10dedabd-a2a5-44a9-ad7e-7ad1264291bc

Catalogue record

Date deposited: 17 Feb 2006
Last modified: 26 Apr 2022 18:04

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Contributors

Author: David I. Gammie
Author: Josephine C. Page
Author: Andrew M. Shaw

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