Photochemistry of O sub 3 /HN sub 3 mixtures

Journal Article · Thu Jan 26 04:00:00 EST 1989 · Journal of Physical Chemistry; (USA)

DOI:https://doi.org/10.1021/j100339a013· OSTI ID:5439026

Ongstad, A P; Coombe, R D; Neumann, D K; Stech, D J ^[1]

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1. Univ. of Denver, CO (USA)

Gaseous mixtures of HN{sub 3} and O{sub 3} were photolyzed with the 249-nm output of a pulsed KrF laser. The photolysis produces O({sup 1}D) atoms, which react with HN{sub 3} to produce N{sub 3} radicals and with the N{sub 3} radicals to produce electronically excited NO(A{sup 2}{Sigma}{sup +}). Rate constants for these reactions were determined from comparison of the experimental NO A {yields} X emission time profiles with NO(A{sup 2}{Sigma}{sup +}) densities calculated from a kinetic model for the system. The rate constants for O({sup 1}D) + HN{sub 3} and O({sup 1}D) + N{sub 3} were determined to be (3.2 {plus minus} 1.0) {times} 10{sup {minus}10} cm{sup 3} s{sup {minus}1} and (1.0 {plus minus} 0.3) {times} 10{sup {minus}10} cm{sup 3} s{sup {minus}1}, respectively.

• OSTI ID: 5439026
• Journal Information: Journal of Physical Chemistry; (USA), Journal Name: Journal of Physical Chemistry; (USA) Vol. 93:2; ISSN 0022-3654; ISSN JPCHA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400500* -- Photochemistry
AZIDES
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
CHEMISTRY
DATA
DECOMPOSITION
ENERGY LEVELS
EXCIMER LASERS
EXCITED STATES
EXPERIMENTAL DATA
FLUIDS
GAS LASERS
GASES
INFORMATION
KINETICS
LASERS
NITROGEN COMPOUNDS
NUMERICAL DATA
OZONE
PHOTOCHEMICAL REACTIONS
PHOTOCHEMISTRY
PHOTOLYSIS
RADICALS
REACTION KINETICS