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Author(s):   Glass, G.P.; Kumaran, S.S.; Michael, J.V.
Title:   Photolysis of Ketene at 193 nm and the Rate Constant for H + HCCO at 297 K
Journal:   J. Phys. Chem. A
Volume:   104
Page(s):   8360 - 8367
Year:   2000
Reference type:   Journal article
Squib:   2000GLA/KUM8360-8367

Reaction:   + HCCOCO + ·CH2
Reaction order:   2
Temperature:   297 K
Pressure:  2.67E-3 - 2.67E-2 bar
Rate expression:   1.7x10-10 [±3.0x10-11 cm3/molecule s]
Bath gas:   Ar
Category:  Experiment
Data type:   Derived from fitting to a complex mechanism
Pressure dependence:   None reported
Experimental procedure:   Static or low flow - Data taken vs time
Excitation technique:   Flash photolysis (laser or conventional)
Time resolution:   In real time
Analytical technique:   Vis-UV absorption
Comments:   The 193 nm photolysis of H2CCO has been studied.Following photodissociation chennels have been identified;H2CCO + hv -> CH2(3B1) + CO, Quantum yield=0.628 -> CH2(1A1) + CO ,, ,, =0.193 -> HCCO + H ,, ,, =0.107 ->C2O + H2 ,, ,, =0.072Lyman-alpha atomic resonance absorption spectroscopy has been used to monitor absolute concentrations of H-atoms. concentration of H-atoms have been monitored

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