摘要
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。
NCl(a1Δ) /I(2P3/2)System was studied by using microwave discharge Cl2/He plasma as Cl atoms source. Strong I (2P1/2) radiation at 1315 nm was obtained. The considerable changes of NCl(a1Δ) and NC1 (b1∑) radiation at 1077 nm and 665 nm respectively were observed when a little amount of I2 was injected into the flow of Cl and HN3,. namely NC1 (a1Δ) radiation at 1077nm decreased rapidly while NCl(b1∑) radiation at 665 nm increased rapidly due to the reactions NCl(a1Δ) + I(2P3/2)&rarr NCl(X3∑) + I(2P1/2) and NCl(a1Δ)+I(2P1/2)&rarr NCl(b1∑) +I(2P3/2). The intensity dependence of I (2P1/2) radiation at 1315 nm on He, Cl2 HN3 and I2 flow rate was investigated. The results show that the optimum flow rate for gases of He, I2 ,Cl2 and HN3 are 1-4, 0.01-0.03, 1 and l-2 mmol/s respectively.
出处
《强激光与粒子束》
EI
CAS
CSCD
北大核心
2003年第6期529-532,共4页
High Power Laser and Particle Beams
基金
国家863计划项目资助课题
大连化学物理研究所创新基金资助课题
