Rotationally resolved threshold photoelectron spectra of OH and OD

Journal Article · Wed Jul 15 04:00:00 EDT 1992 · Journal of Chemical Physics; (United States)

DOI:https://doi.org/10.1063/1.463179· OSTI ID:7105641

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

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

The results of combined experimental and theoretical studies of the rotationally resolved photoelectron spectra of OH and OD following single-photon ionization are presented. The measured zero-kinetic-energy (ZEKE) spectra were obtained using pulsed field ionization in conjunction with a vacuum ultraviolet laser source. The OH{sup +} and OD{sup +} ({ital X} {sup 3}{Sigma}{sup {minus}}, {ital v}{sup +}=0) rotational distributions were studied over the range 95.0--95.4 nm. Agreement between the observed and calculated spectra is very encouraging. Improved values for the ionization potentials of OH and OD (104 989 and 105 085{plus minus}2 cm{sup {minus}1}, respectively) are reported and the unusual dynamics favoring {Delta}{ital N}{lt}0 transitions are discussed.

• DOE Contract Number: AC02-76CH00016
• OSTI ID: 7105641
• Journal Information: Journal of Chemical Physics; (United States), Journal Name: Journal of Chemical Physics; (United States) Vol. 97:2; ISSN JCPSA; ISSN 0021-9606
• Country of Publication: United States
• Language: English

Related Subjects

664200* -- Spectra of Atoms & Molecules & their Interactions with Photons-- (1992-)
74 ATOMIC AND MOLECULAR PHYSICS
DEUTERIDES
DEUTERIUM COMPOUNDS
ELECTROMAGNETIC RADIATION
ELECTRON SPECTROSCOPY
ENERGY
ENERGY LEVELS
EXCITED STATES
HYDROGEN COMPOUNDS
HYDROXIDES
IONIZATION POTENTIAL
OXYGEN COMPOUNDS
PHOTOELECTRON SPECTROSCOPY
PULSES
RADIATIONS
RESOLUTION
ROTATIONAL STATES
SPECTROSCOPY
THRESHOLD ENERGY
ULTRAVIOLET RADIATION