'Observation of the P2 radical by Resonance-enhanced Multiphoton Ionisation Spectroscopy
- Howe, J.D. 1
- Puyuelo, P. 1
- Ashfold, M.N.R. 1
- Western, C.M. 1
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1
University of Bristol
info
ISSN: 0956-5000
Year of publication: 1993
Volume: 89
Issue: 14
Pages: 2337-2343
Type: Article
More publications in: Journal of the Chemical Society. Faraday transactions Print
Abstract
Three hitherto unobserved vibrational levels of the b′ 3Σu - electronic state of P2 have been identified via the rotationally resolved, one-photon resonance enthancements they provide in the multiphoton ionisation spectrum of this radical. Analysis yields an extended set of spectroscopic constants for the b′ 3Σu - state and a first estimate of the relative strengths of the parallel and perpendicular contributions to the P2(b′ 3Σu -X 1Σg +) transition moment. One additional, particularly intense but unresolved feature observed at an excitation wavelength of ca. 320.75 nm is tentatively assigned in terms of a two-photon resonance involving a Rydberg state of P2 with 1Σg + symmetry.