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The far-infrared laser magnetic resonance spectrum of the SiH radical and determination of ground state parametersThe far-infrared laser magnetic resonance spectrum of the SiH radical in the v = O level of its X2Pi state has been recorded. The signals are rather weak. The molecules were generated in the reaction between fluorine atoms and SiH4. Rotational transitions have been detected in both 2Pi1/2 and 2Pi3/2 spin components but no fine structure transitions between the spin components were observed. Proton hyperfine splittings were resolved on some lines. The measurements have been analyzed, subjected to a least-squares fit using an effective Hamiltonian, and the appropriate molecular parameters determined. The weakness of the spectrum and the failure of attempts to power saturate favorable lines are both consistent with a small value for the electric dipole moment for SiH.
Document ID
19850028568
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Brown, J. M.
(Oxford University Oxford; Southampton University, Southampton, United Kingdom)
Curl, R. F.
(Rice University Houston, TX, United States)
Evenson, K. M.
(National Bureau of Standards Boulder, CO, United States)
Date Acquired
August 12, 2013
Publication Date
October 1, 1984
Publication Information
Publication: Journal of Chemical Physics
Volume: 81
ISSN: 0021-9606
Subject Category
Atomic And Molecular Physics
Accession Number
85A10719
Funding Number(s)
CONTRACT_GRANT: NASA ORDER W-15047
Distribution Limits
Public
Copyright
Other

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