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New electronic states of NH and ND observed from 258 to 288 nm by resonance enhanced multiphoton ionization spectroscopy

J. Chem. Phys. 92, 6420 (1990); doi:10.1063/1.458321

Issue Date: 1 June 1990

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Russell D. Johnson III and Jeffrey W. Hudgens
National Institute of Standards and Technology Chemical Kinetics Division, Gaithersburg, Maryland 20899
Three new electronic states of NH and ND (imidogen radical) have been observed by REMPI (resonance enhanced multiphoton ionization) spectroscopy in the region of 258 through 288 nm and assigned. The NH (ND) was produced by the photolysis of HN3 (DN3) (hydrazoic acid) in the same wavelength region. The observed two-photon transitions are from the a 1Delta state to 3p Rydberg states. Transitions were also observed from the a 1Delta state to the d 1Sigma+ state. The new state assignments are: f 1Pi (3psigma) at 86 378 cm−1, g 1Delta (3ppi) at 88 140 cm−1, and h 1Sigma (3ppi) at 89 531 cm−1. Rotational constants (B and D) and, where possible, vibrational spacings for the thirteen observed bands are also determined. The Journal of Chemical Physics is copyrighted by The American Institute of Physics.
History: Received 23 January 1990; accepted 12 February 1990
Permalink: http://link.aip.org/link/?JCPSA6/92/6420/1
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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)
  • YEAR: 1990

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0021-9606 (print)   1089-7690 (online)
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