Excited Dissociation Kinetics of H2O by Pulsed Streamer Discharge

ZHANG Lian-Shui, 河北大学物理科学与技术学院, 河北 保定 071002, College of Physics Science and Technology, Hebei University, Baoding 071002, Hebei Province, P. R. China, WANG Bai-Rong, DANG Wei, XIAO Guang-Chang-Sheng
2008 Wuli huaxue xuebao  
OHradical,and(n=3寅n=2)forHatom,respectively.Thetemporal鄄resolvedmeasurementsat 337.2,308.4,656.5nmshowedthattheoccurrencesof •OH * andH * were7.4nsand17.6nslaterthanthatofN 2 * respectively.SothedissociationprocessofH 2 OcanbedescribedasthatH 2 Oisexcitedtohighvibrationallevelofthe firstexcitedstatebynon鄄elasticitycollisionwithelectron,andthendissociatesto•OH * radicalatexcitedstateandH atomatgroundstate.Furthermore,spatial鄄resolvedmeasurementsshowedthatthedensitiesofactiveparticlesreached
more » ... ximumat0.5mmawayfromnegativeelectrodecorrespondingtothenegativeglowregionofstreamer discharge,wherethemaximaofelectrontemperatureanddensitywerehelpfultotheformationoftheseactiveparticles.
doi:10.3866/pku.whxb20080834 fatcat:33vo6q2rvbhktntalr6he4jlu4