The yield of metastable atoms through dissociative recombination of O sup + sub 2 ions with electrons

Journal Article · Wed Nov 01 00:00:00 EST 1989 · Journal of Chemical Physics; (USA)

DOI:https://doi.org/10.1063/1.457582· OSTI ID:5287428

Queffelec, J L; Rowe, B R; Vallee, F; Gomet, J C; Morlais, M ^[1]

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1. Departement de physique atomique et moleculaire, Universite de Rennes 1, 35042 Rennes cedex France (FR)

The yield of metastable oxygen atoms through dissociative recombination of O{sup +}{sub 2} ions with electrons has been studied using a plasma flow tube experiment. For O{sup +}{sub 2} with high vibrational excitation (around {ital v}=9) it was found that half of the oxygen atoms are formed on the O({sup 1}{ital D}) state and that the branching ratio toward O({sup 1}{ital S}) is large ({similar to}0.4). Using Xe{sup +} instead of Ar{sup +} as precursor ions, it was shown that the O({sup 1}{ital S}) yield is much less for ions with low vibrational excitation. However, the present experimental results are not compatible with the extremely low theoretical value of this yield which was reported recently for O{sup +}{sub 2} ({ital v}=0).

• OSTI ID: 5287428
• Journal Information: Journal of Chemical Physics; (USA), Vol. 91:9; ISSN 0021-9606
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
OXYGEN
CHEMICAL REACTION YIELD
OXYGEN IONS
DISSOCIATION
ELECTRON-ION COLLISIONS
ATOMS
BRANCHING RATIO
IONOSPHERE
METASTABLE STATES
MOLECULAR IONS
PLANETARY ATMOSPHERES
PLASMA
RECOMBINATION
ATMOSPHERES
CHARGED PARTICLES
COLLISIONS
EARTH ATMOSPHERE
ELECTRON COLLISIONS
ELEMENTS
ENERGY LEVELS
EXCITED STATES
ION COLLISIONS
IONS
NONMETALS
PLANETARY IONOSPHERES
YIELDS
640304* - Atomic
Molecular & Chemical Physics- Collision Phenomena