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Triplet excited states of the NH(ND) radical revealed via two photon resonant multiphoton ionization spectroscopy

J. Chem. Phys. 96, 5538 (1992); doi:10.1063/1.462691

Issue Date: 1 April 1992

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Simon G. Clement, Michael N. R. Ashfold, and Colin M. Western
School of Chemistry, University of Bristol, Bristol, BS8 1TS, United Kingdom

Russell D. Johnson III and Jeffrey W. Hudgens
Chemical Kinetics and Thermodynamics Division, Chemical Science and Technology, Laboratory, National Institute of Standards and Technology, Gaithersburg, Maryland 20899
We report the first spectroscopic characterization of any triplet Rydberg state of the imidogen radical. The B 3Pi state of NH and ND is identified via the two photon resonance enhancement it provides in the MPI spectrum of ground (X 3Sigma−) state NH(ND) radicals, and shown to be well described (at least near its equilibrium geometry) as a 3p Rydberg state built on the ground (X 2Pi) state ion core. We consider also the origin of an overlapping 3Sigma−X 3Sigma− two photon resonance apparent only in the spectrum of the ND radical. The Journal of Chemical Physics is copyrighted by The American Institute of Physics.
History: Received 12 December 1991; accepted 17 January 1992
Permalink: http://link.aip.org/link/?JCPSA6/96/5538/1
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KEYWORDS and PACS

Keywords
PACS
  • 33.80.Rv
    Molecular spectra and interactions of molecules with photons Photon interactions with molecules Multiphoton ionization and excitation to highly excited states (e.g., Rydberg states)
  • 33.60.-q
    Molecular spectra and interactions of molecules with photons Photoelectron spectra
  • YEAR: 1992

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PUBLICATION DATA

ISSN:
0021-9606 (print)   1089-7690 (online)
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REFERENCES (18)
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