Single-photon threshold photoionization of NO

Journal Article · Sat May 15 04:00:00 EDT 1993 · Journal of Chemical Physics; (United States)

DOI:https://doi.org/10.1063/1.464575· OSTI ID:6666310

Wiedmann, R T; White, M G ^[1]; Wang, K; McKoy, V ^[2]

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1. Brookhaven National Laboratory, Chemistry Department, Upton, New York 11973 (United States)
2. Arthur Amos Noyes Laboratory of Chemical Physics, California Institute of Technology, Pasadena, California 91125 (United States)

Single-photon threshold photoionization spectra for jet-cooled NO have been measured for the [ital v][sup +]=0 and 1 vibrational levels of the [ital X] [sup 1][Sigma][sup +] ground state of NO[sup +]. The NO[sup +] rotational state distribution for the [ital v][sup +]=0 level is shown to be perturbed by nearby autoionizing levels, whereas the [ital v][sup +]=1 level exhibits a cation rotational distribution which is in near quantitative agreement with calculated spectra near threshold. Only small changes in total angular momentum are observed ([vert bar][Delta][ital J][vert bar]=[vert bar][ital J][sup +][minus][ital J][double prime][vert bar][le]5/2) even though a wide range of photoelectron angular momenta ([ital l]=0--3) are predicted to contribute to the near-threshold photoelectron continua. The present results are also discussed in light of recently published two-photon threshold photoionization spectra of NO which exhibit nearly identical NO[sup +] rotational state distributions.

• DOE Contract Number: AC02-76CH00016
• OSTI ID: 6666310
• Journal Information: Journal of Chemical Physics; (United States), Journal Name: Journal of Chemical Physics; (United States) Vol. 98:10; ISSN JCPSA6; ISSN 0021-9606
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400500* -- Photochemistry
ANGULAR MOMENTUM
CATIONS
CHALCOGENIDES
CHARGED PARTICLES
COOLING
ELECTROMAGNETIC RADIATION
ENERGY
ENERGY LEVELS
EXCITED STATES
GROUND STATES
IONIZATION
IONS
JETS
MOLECULAR IONS
MONOCHROMATIC RADIATION
NITRIC OXIDE
NITROGEN COMPOUNDS
NITROGEN OXIDES
OXIDES
OXYGEN COMPOUNDS
PHOTOIONIZATION
RADIATIONS
ROTATIONAL STATES
THRESHOLD ENERGY
VIBRATIONAL STATES