Product branching ratios from the N sub 2 (A sup 3. Sigma. sub u sup + ) + O sub 2 interaction

Journal Article · Thu Feb 09 04:00:00 EST 1989 · Journal of Physical Chemistry; (USA)

DOI:https://doi.org/10.1021/j100340a017· OSTI ID:5144134

Fraser, M E; Piper, L G ^[1]

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1. Physical Sciences Inc., Andover, MA (USA)

The product channels of the N{sub 2}(A{sup 3}{Sigma}{sub u}{sup +}, v = 0-2) + O{sub 2} interaction have been examined by using a discharge-flow apparatus. N{sub 2}(A) was generated by energy transfer from Ar metastables and directly determined from Vegard-Kaplan emission. The branching ratios for N{sub 2}O and O{sub 2}(B{sup 3}{Sigma}{sub u}{sup {minus}}) formation have been determined to be <0.2% and <15%, respectively. These results firmly establish quenching of N{sub 2}(A{sup 3}{Sigma}{sub u}{sup +}, v {le} 2) by molecular oxygen to be a negligible source of atmospheric N{sub 2}O. The results for O({sup 3}P) production exceed the maximum possible branching ratio (two O atoms per N{sub 2}(A)) by a factor of 3. These results indicate that the Ar* + N{sub 2} interaction produces N{sub 2} metastable states, in addition to N{sub 2}(A), capable of dissociating O{sub 2}.

• OSTI ID: 5144134
• Journal Information: Journal of Physical Chemistry; (USA), Journal Name: Journal of Physical Chemistry; (USA) Vol. 93:3; ISSN 0022-3654; ISSN JPCHA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical &amp; Physicochemical Properties
54 ENVIRONMENTAL SCIENCES
540110
BRANCHING RATIO
CHALCOGENIDES
CHEMICAL REACTION YIELD
CHEMICAL REACTIONS
CHEMICAL REACTORS
DATA
ENERGY LEVELS
EXCITED STATES
EXPERIMENTAL DATA
FLOW RATE
FLUID FLOW
INFORMATION
NITROGEN COMPOUNDS
NITROGEN OXIDES
NITROUS OXIDE
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
YIELDS