Absolute total cross sections for the charge transfer and dissociative charge transfer channels in the collisions of O sup + ( sup 4 S )+H sub 2

Journal Article · Fri Feb 01 04:00:00 EST 1991 · Journal of Chemical Physics; (USA)

DOI:https://doi.org/10.1063/1.459859· OSTI ID:6203285

Flesch, G D; Ng, C Y ^[1]

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1. Ames Laboratory, U. S. Department of Energy (US) Department of Chemistry, Iowa State University, Ames, Iowa 50011

Absolute total cross sections for the reactions, O{sup +}({sup 4}{ital S}) + H{sub 2}({ital X} {sup 1}{Sigma}{sup +}{sub {ital g}}){r arrow}O+H{sup +}{sub 2} (reaction (1)) and O+H+H{sup +} (reaction (2)) have been measured in the center-of-mass collision energy ({ital E}{sub c.m.}) range of 1.33--22.22 eV. The appearance energies for H{sup +}{sub 2} (1.70{plus minus}0.10 eV) and H{sup +} (4.50{plus minus}0.10 eV) are in excellent agreement with the thermochemical thresholds for reactions (1) and (2), respectively. At {ital E}{sub c.m.} higher than approximately 9 eV, the total cross sections for reactions (1) and (2) are greater than that for the exothermic channel forming OH{sup +}+H.

• OSTI ID: 6203285
• Journal Information: Journal of Chemical Physics; (USA), Journal Name: Journal of Chemical Physics; (USA) Vol. 94:3; ISSN JCPSA; ISSN 0021-9606
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ATOMIC IONS
CHARGE EXCHANGE
CHARGED PARTICLES
COLLISIONS
CROSS SECTIONS
DISSOCIATION
ELEMENTS
HYDROGEN
ION COLLISIONS
ION-MOLECULE COLLISIONS
IONS
MOLECULE COLLISIONS
NONMETALS
OXYGEN IONS
TOTAL CROSS SECTIONS