Laser induced photo-detachment of O2 in DC discharge

查看全文 作　　者：j r [1]legorreta;j l [1]patiNo;f b [1]yousif 机构地区：[1]centro de investigación en ciencias,universidad autónoma del estado de morelos.Av.Universidad,No.1001 Co1Chamilpa Cuem avaca Morelos,Mexico 出　　处：《Plasma Science and Technology》索引2018年第20卷第7期,共8页 基　　金：financed by CONACy T with contract#41072-F,PRODEP;the Programa Integral de Fortalecimiento Institucinal-2 摘　　要：Determination of the negative ion number density of O^-_2and O^-in a DC discharge of oxygen plasma was made employing Langmuir probe in conjunction with eclipse laser photodetachment technique.The temporal evolution of the extra electrons resulting from the photodetachment of O^-_2and O^-were used to evaluate the negative ion number density.The ratio of O^-_2number density to O^-varied from 0.03 to 0.22.Number density of both O^-_2and O^-increased with increasing power and decreased as the pressure was increased.Electron number density was evaluated from the electron energy distribution function(EEDF)using the I–V recorded characteristic curves.Electron temperature between 2 and 2.7 eV were obtained.Influence of the O_2(a^1Δ_g)metastable state is discussed. 关 键 词：分泌物 O2 相片 激光 DC 电子数 记录特征 电子温度