论文部分内容阅读
在流动余辉装置上,利用空心阴极放电产生的活性氮与CHBr3分子碰撞,在550-750 nm波长范围内观察到了较强的NBr(b→X)跃迁发射谱;同时,在反应管的下游,我们探测到了CN(A,B)的发射谱。分析认为化学发光机理是:亚稳态氮原子N(2D)与CHBr3之间的一步传能反应直接产生了NBr(b)激发态,而CN(A,B)态则来自基态原子N(4S)与CBr的反应,其中CBr是CHBr3经活性氮中的亚稳态N2(A)激发离解形成的。
In mobile afterglow device, the active nitrogen generated by the hollow cathode discharge collides with CHBr3 molecule, and the strong NBr (b → X) transition emission spectrum is observed in the wavelength range of 550-750 nm. Meanwhile, downstream of the reaction tube, We detected the emission spectrum of CN (A, B). The chemiluminescence mechanism is that the one-step energy transfer reaction between the metastable nitrogen atom N (2D) and CHBr3 directly produces the NBr (b) excited state, while the CN (A, B) state is derived from the ground state atom N ) With CBr, where CBr is formed by dissociation of CHBr3 by metastable N2 (A) activation in active nitrogen.