Temperature dependence of the collisional quenching of NH(a sup 1. Delta. ) by N sub 2 , O sub 2 , CO, and Xe

Journal Article · Thu Apr 19 04:00:00 EDT 1990 · Journal of Physical Chemistry; (USA)

DOI:https://doi.org/10.1021/j100371a015· OSTI ID:6902679

Nelson, H H; McDonald, J R ^[1]; Alexander, M H ^[2]

---

1. Naval Research Lab., Washington, DC (USA)
2. Univ. of Maryland, College Park (USA)

The authors have measured the temperature dependence of the collision-induced quenching rate constant for NH(a {sup 1}{Delta}) with the collision partners N{sub 2}, CO, O{sub 2} and Xe. For collisions with N{sub 2} they derive an A factor (7.06 {plus minus} 1.03) {times} 10{sup {minus}13} cm{sup 3} s{sup {minus}1} and an activation energy of (1.26 {plus minus} 0.12) kcal/mol. For collisions with oxygen, they derive an Arrhenius expression: k(O{sub 2}) = (1.80 {plus minus} 0.10) {times} 10{sup {minus}12} exp(({minus}2.07 {plus minus} 0.05) kcal/mol/RT) cm{sup 3} s{sup {minus}1}. As expected, quenching by CO and Xe is temperature independent with quenching cross sections of 1.9 and 1.5 {angstrom}{sup 2}, respectively.

• OSTI ID: 6902679
• Journal Information: Journal of Physical Chemistry; (USA), Journal Name: Journal of Physical Chemistry; (USA) Vol. 94:8; ISSN JPCHA; ISSN 0022-3654
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400200* -- Inorganic
Organic
& Physical Chemistry
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CHALCOGENIDES
CHEMICAL REACTION KINETICS
CROSS SECTIONS
DATA
DATA ANALYSIS
ELEMENTS
EXPERIMENTAL DATA
FLUIDS
GASES
INFORMATION
KINETICS
MEASURING INSTRUMENTS
MEASURING METHODS
NITROGEN
NITROGEN COMPOUNDS
NONMETALS
NUMERICAL DATA
OXIDES
OXYGEN
OXYGEN COMPOUNDS
QUENCHING
RADICALS
RARE GASES
REACTION KINETICS
TEMPERATURE DEPENDENCE
XENON