Threshold photoelectron spectrum of HOBr

Journal Article · Thu Dec 01 04:00:00 EST 1994 · Journal of Chemical Physics; (United States)

DOI:https://doi.org/10.1063/1.468012· OSTI ID:6804554

Ruscic, B; Berkowitz, J ^[1]

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1. Chemistry Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States)

The threshold photoelectron spectrum (TPES) of HOBr has been obtained in the wavelength regions corresponding to the first and second ionization bands. The adiabatic ionization potential (IP) is 10.642[plus minus]0.005 eV; the O--Br stretching frequency in this [ital X] [sup 2][ital A][double prime] state is found to be 730[plus minus]20 cm[sup [minus]1]. The adiabatic IP for the first excited state ([ital A] [sup 2][ital A][prime]) of HOBr[sup +] is 11.448[plus minus]0.005 eV. The latter value confirms an earlier, tentative conclusion based on the interpretation of autoionizing structure in the photoionization mass spectrum (PIMS). There is a slight difference in the TPES and PIMS values of the first adiabatic IP, whose origin is still somewhat ambiguies.

• Research Organization: Argonne National Laboratory (ANL), Argonne, IL
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 6804554
• Journal Information: Journal of Chemical Physics; (United States), Journal Name: Journal of Chemical Physics; (United States) Vol. 101:11; ISSN JCPSA6; 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
ADIABATIC PROCESSES
AUTOIONIZATION
BROMINE COMPOUNDS
BROMINE OXIDES
CHALCOGENIDES
ELECTROMAGNETIC RADIATION
ELECTRON SPECTROSCOPY
ENERGY
ENERGY LEVELS
EXCITED STATES
FAR ULTRAVIOLET RADIATION
FREQUENCY RANGE
HALOGEN COMPOUNDS
HYDROBROMIC ACID
HYDROGEN COMPOUNDS
INORGANIC ACIDS
IONIZATION
IONIZATION POTENTIAL
MASS SPECTRA
OXIDES
OXYGEN COMPOUNDS
PHOTOELECTRON SPECTROSCOPY
RADIATIONS
SPECTRA
SPECTROSCOPY
THRESHOLD ENERGY
ULTRAVIOLET RADIATION