Discharge-flow/resonance

A discharge flow-resonance fluorescence system has been constructed for use in these studies. A mixture of H2 in He was passed through a microwave discharge to produce H atoms. Very low concentrations of H atoms can be generated by passing "pure" He through the discharge. In all of the experiments described in... 

Oxidation rate constant k, for gas-phase second order rate constants, kOH for reaction with OH radical, kNG3 with N03 radical and ko3 with 03 or as indicated, data at other temperatures and/or the Arrhenius expression see reference k0H = (3.18 0.06) x 10-13 cm3 molecule 1 s 1 at 295 K, measured range 278-461 K (discharge flow-resonance fluorescence, Jeong Kaufman 1979)... 

DF-RF, discharge flow-resonance fluorescence LP-RF, laser photolysis-resonance fluorescence RRM, relative rate method LPC, laser photolysis-chemiluminescence. 

The abbreviations used for techniques are DF-RF discharge flow-resonance fluorescence DF-RA discharge flow-resonance absorption DF-ESR discharge flow-esr detection DF-LMR discharge flow with laser magnetic resonance detection of OH DF-MS discharge flow-mass spectrometry FP-KS flash photolysis-kinetic spectroscopy FP-RA flash photolysis-resonance absorption FP-RF flash photolysis-resonance fluorescence MPS modulation-phase shift ... 

Hydrogen Cyanide. A pressure dependent ( <5-20 torr total pressure of He or Ar) rate constant In the range k % 10 o 10 5 cm3 molecule sec has been determined at 373 K by Phillips (326) using a discharge flow-resonance fluorescence system. This pressure dependence Indicates that the reaction proceeds via Initial addition of the OH radical, followed by decomposition, stabilization, or other reactions of the Initially formed adduct. 

Devolder, P., Carlier, M., Pauwels, J.E., Sochet, L.R. Rate constant for the reaction of OH with nitric acid A new investigation by discharge flow resonance fluorescence. Chem. Phys. Lett. Ill, 94-99 (1984)... 

Hickson, K.M., Keyser, L.F., Sander, S.P. Temperature dependence of the H02-HC10 reaction. 2. Reaction kinetics using the discharge-flow resonance-fluorescence technique, J. Phys. Chem. A 111, 8126-8138 (2007)... 

Relative rate methods have been used by Thevenet et al. (2000), Ullerstam et al. (2001), Canosa-Mas et al. (2001), and Wang et al. (2002). Canosa-Mas et al. (2001) used a discharge flow-resonance fluorescence method at room temperature, while... 

Beach, S.D., K.M. Hickson, I.W.M. Smith, and R.P Tuckett (2001), Rate constants and Arrhenius parameters for the reactions of OH radicals and Cl atoms with CF3CH2OCHF2, CE3CHCIOCHF2 and CF3CH2OCCIE2, using the discharge-flow/resonance fluorescence method, Phys. Chem. Chem. Phys., 3, 3064-3069. 

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