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Experimental study on the system of Cl/Cl_2/He/HN_3/I_2 总被引:2,自引:0,他引:2
Using a microwave generator, chlorine diluted by helium was dissociated to chlorine atoms that subsequently reacted with hydrogen azide to produce the excited states of NCl(a1△). Meanwhile, molecular iodine with carrier gas of helium reacted with atomic chlorine to produce atomic iodine which then was pumped to excited state of I(2P1/2) by an energy transfer reaction from NCl(a1△). In this paper, the changes of NCl(a1△) and NCl(b1∑) emission intensity is presented when I2/He is introduced into the stream of Cl/Cl2/He/HN3/NCl(a1△)/NCl(b1∑). The dependences of atomic iodine I(2P1/2) on flow rates of gases were also investigated. The optimum parameters for I(2P1/2) production are given. 相似文献
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利用微波放电Cl2/He等离子体作为Cl源,对反应NCl(a1Δ) + I(2P3/2)→NCl(X3Σ) + I(2P1/2)进行了实验研究,得到了较大的I(2P1/2)自发辐射荧光信号,检测到NCl(a1Δ,b1Σ)自发辐射荧光光谱在存在少量I(2P1/2)下发生的显著变化,其中NCl(a1Δ)自发辐射荧光信号降低,同时由于I(2P1/2)的作用,NCl(b1Σ)自发辐射荧光信号大幅度增加。在考察各反应气体流量对I(2P1/2)自发辐射荧光信号的影响时发现,在本次实验条件下,各种气体的最佳流量:He为1~4mmol/s, I2为0.01~0.03mmol/s, Cl2为1.0mmol/s左右,而HN3流量略大于Cl2流量时信号升高幅度开始变缓,约为Cl2流量的两倍时信号不再有显著的变化。 相似文献
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