Mechanism of Formation of the CN(B2Σ+) State from Dissociative Excitation Reaction of BrCN with Electron Cyclotron Resonance Plasma of Ar
Mechanism of Formation of the CN(B2Σ+) State from Dissociative Excitation Reaction of BrCN with Electron Cyclotron Resonance Plasma of Ar
复制标题
BrCN与Ar电子回旋共振等离子体解离激发反应形成CN(B2Σ+)态的机理
DOI：
10.1143/jjap.41.2225
复制
发表时间：
2002
影响因子：
1.5
通讯作者：
H. Saitoh
中科院分区：
文献类型：
--
作者：
Haruhiko Ito;S. Kanda;K. Namiki;N. Ito;H. Saitoh
本文报道了Σ~(2+)-X~(2+)Σ~+与Ar~(2+)等离子体的解离激发反应的高分辨发射光谱和Ar~+、Ar~+的共振线。将这些光谱与微波(MW)Ar放电流反应所观察到的光谱进行了比较。结果表明，在微波放电过程中，Ar的亚稳态能量传递不会在ECR等离子体中进行。用静电探针测量了CN(B_2，Σ~+)的电子密度和温度，并对CN(B_2)的形成进行了动力学分析。在ECR等离子体中，CN(B2Σ+)态最主要的形成过程被认为是高能自由电子碰撞下BrCN的解离激发，其中不能排除BrCN+与热自由电子复合的贡献。
High-resolution emission spectra of the CN(B2Σ+–X2Σ+) transition and the resonance lines of Ar and Ar+ have been observed for the dissociative excitation reaction of BrCN with the electron cyclotron resonance (ECR) plasma of Ar. These spectra have been compared with those observed for the reaction with the microwave (MW) discharge flow of Ar. It is found that the energy transfer from the metastable state of Ar which proceeds predominantly in the MW discharge flow does not proceed in the ECR plasma. The electron density and temperature have been measured by an electrostatic-probe measurement, from which the kinetic analysis of formation of CN(B2Σ+) has been conducted. The most dominant process of formation of the CN(B2Σ+) state in the ECR plasma is considered to be the dissociative excitation of BrCN by the impact of high-energy free electrons, where the contribution of the recombination of BrCN+ with thermal free electrons cannot be excluded.