Rotational photodetachment spectroscopy of the SeH- ion

R. C. Stoneman, Daniel John Larson

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Individually resolved rotational photodetachment thresholds have been observed for SeH- ions in a magnetic field. The observed photodetachment cross section exhibits structure due to the cyclo- tron levels of the detached electron in the magnetic field. The electron affinity of SeH and the rotational constants of SeH- are determined from the measured rotational threshold energies. In addition to the high-resolution individual rotational threshold spectra, low-resolution spectra, for which the rotational band structure dominates, are obtained. These low-resolution spectra are used to assign rotational quantum numbers to the individual thresholds. The electron affinity of SeH is found to be 17?5.17(20) cm-1, and the rotational constants of SeH- are found to be B=7.7289(46) cm-1 and D=3.33(9)×10-4 cm-1.

Original languageEnglish (US)
Pages (from-to)2928-2935
Number of pages8
JournalPhysical Review A
Volume35
Issue number7
DOIs
StatePublished - Jan 1 1987

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photodetachment
thresholds
electron affinity
spectroscopy
ions
magnetic fields
quantum numbers
cyclotrons
high resolution
cross sections
electrons
energy

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

Cite this

Stoneman, R. C. ; Larson, Daniel John. / Rotational photodetachment spectroscopy of the SeH- ion. In: Physical Review A. 1987 ; Vol. 35, No. 7. pp. 2928-2935.
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Rotational photodetachment spectroscopy of the SeH- ion. / Stoneman, R. C.; Larson, Daniel John.

In: Physical Review A, Vol. 35, No. 7, 01.01.1987, p. 2928-2935.

Research output: Contribution to journalArticle

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AU - Larson, Daniel John

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AB - Individually resolved rotational photodetachment thresholds have been observed for SeH- ions in a magnetic field. The observed photodetachment cross section exhibits structure due to the cyclo- tron levels of the detached electron in the magnetic field. The electron affinity of SeH and the rotational constants of SeH- are determined from the measured rotational threshold energies. In addition to the high-resolution individual rotational threshold spectra, low-resolution spectra, for which the rotational band structure dominates, are obtained. These low-resolution spectra are used to assign rotational quantum numbers to the individual thresholds. The electron affinity of SeH is found to be 17?5.17(20) cm-1, and the rotational constants of SeH- are found to be B=7.7289(46) cm-1 and D=3.33(9)×10-4 cm-1.

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