Single-, double-, and triple-photoionization cross sections of carbon monoxide (CO) and ionic fragmentation of CO[sup +], CO[sup 2+], and CO[sup 3+]

Journal Article · Wed Dec 01 04:00:00 EST 1993 · Physical Review A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.48.4379· OSTI ID:5574126

Masuoka, T ^[1]; Nakamura, E ^[2]

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1. Department of Applied Physics, Faculty of Engineering, Osaka City University, Sugimoto 3, Sumiyoshi-ku, Osaka 558 (Japan)
2. Ultraviolet Synchrotron Orbital Radiation Facility, Institute for Molecular Science, Myodaiji, Okazaki 444 (Japan)

Single-, double-, and triple-photoionization processes of carbon monoxide (CO) have been studied in the photon-energy region of 37--100 eV by use of time-of-flight mass spectrometry and a photoion-photoion-coincidence method together with synchrotron radiation. The single-, double-, and triple-photoionization cross sections of CO are determined. Ion branching ratios and the partial cross sections for the individual ions respectively produced from the precursors CO[sup +] and CO[sup 2+] are determined separately at excitation energies where the molecular and dissociative single- and double-photoionization processes compete. The threshold for the molecular double photoionization was found to be 41.3[plus minus]0.2 eV. Furthermore, in single photoionization, the production of CO[sup +] is dominant whereas with double photoionization dissociation becomes dominant.

• OSTI ID: 5574126
• Journal Information: Physical Review A; (United States), Journal Name: Physical Review A; (United States) Vol. 48:6; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

664200* -- Spectra of Atoms & Molecules & their Interactions with Photons-- (1992-)
74 ATOMIC AND MOLECULAR PHYSICS
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CHALCOGENIDES
CHARGED PARTICLES
CROSS SECTIONS
ENERGY
IONIZATION
IONS
MASS SPECTROMETERS
MEASURING INSTRUMENTS
MULTICHARGED IONS
OXIDES
OXYGEN COMPOUNDS
PHOTOIONIZATION
SPECTROMETERS
THRESHOLD ENERGY
TIME-OF-FLIGHT METHOD
YIELDS