Flowing-afterglow source of NF(b/sup 1/. sigma. /sup +/): measurement of quenching rate constants

Journal Article · Thu Apr 25 04:00:00 EST 1985 · J. Phys. Chem.; (United States)

DOI:https://doi.org/10.1021/j100255a002· OSTI ID:5227674

Lin, D; Setser, D W

The reaction of Ar(/sup 3/P/sub 0,2/) metastable atoms with NF/sub 2/ has been employed as a flowing-afterglow source for NF(b) molecules in Ar carrier gas. The flowing-afterglow source is characterized and used to measure some quenching rate constants at 300 K. In the absence of added reagents, the principal loss of NF(b) molecules is via radiative decay and the NF(b) radiative lifetime is confirmed as approx.20 ms. For most reagents the quenching mechanism is E-V transfer and the quenching rate constants are in the 10/sup -13/ - 10/sup -15/ cm/sup 3/ molecule/sup -1/ s/sup -1/ range. The quenching rate constants with Cl/sub 2/ and Br/sub 2/ are approx.4 x 10/sup -11/ cm/sup 3/ molecule/sup -1/ s/sup -1/, and the mechanism probably is excitation transfer. 26 references, 3 figures, 1 table.

• Research Organization: Kansas State Univ., Manhattan
• OSTI ID: 5227674
• Journal Information: J. Phys. Chem.; (United States), Journal Name: J. Phys. Chem.; (United States) Vol. 89:9; ISSN JPCHA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
42 ENGINEERING
420300 -- Engineering-- Lasers-- (-1989)
AFTERGLOW
ARGON
CHEMICAL REACTIONS
DATA
DE-EXCITATION
ELECTRONIC STRUCTURE
ELEMENTS
EMISSION SPECTROSCOPY
ENERGY LEVELS
ENERGY TRANSFER
ENERGY-LEVEL TRANSITIONS
EXCITED STATES
EXPERIMENTAL DATA
FLUIDS
FLUORIDES
FLUORINE COMPOUNDS
GASES
HALIDES
HALOGEN COMPOUNDS
INFORMATION
KINETICS
MEDIUM TEMPERATURE
NITROGEN COMPOUNDS
NITROGEN FLUORIDES
NONMETALS
NUMERICAL DATA
RADIATIONLESS DECAY
RARE GASES
REACTION KINETICS
SPECTRA
SPECTROSCOPY
VIBRATIONAL STATES
VISIBLE SPECTRA