| 氨基氰分子在193nm的光离解动力学 |
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| 引用本文： | 解笑湘,I. A. MCLAREN,J. B. HALPERN,W. M. JACKSON.氨基氰分子在193nm的光离解动力学[J].物理学报,1987,36(6):691-697. |
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| 作者姓名： | 解笑湘 I. A. MCLAREN J. B. HALPERN W. M. JACKSON |
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| 作者单位： | (1)美国Howard大学化学系; (2)美国加州大学Davis分校化学系; (3)中国科学院安徽光学精密机械研究所 |
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| 摘 要： | 本文研究了氨基氰分子(H2NCN)的光离解动力学。利用激光诱导荧光技术(LIF)检测了这一分子在193nm下光解所生成的CN(X2Σ+)基,在激光能量为0.35mJ/脉冲的条件下,CN(X)基的LIF信号十分弱,其0—0带的转动温度为1590±90K;当激光能量较高时,LIF信号明显增加,并观察到=2能级上的布居。在50℃的温度下,本实验测量了氨基氰分子的紫外吸收光谱,在193nm其吸收截面小于2.4×10-19cm2。二次光解机理可用来解释本实验的结果。
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| 收稿时间： | 1986-04-21 |
THE PHOTODISSOCIATION DYNAMICS OF CYANAMIDE AT 193 nm |
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| XIE XIAO-XIANG,I. A. MCLAREN,J. B. HALPERN and W. M. JACKSON.THE PHOTODISSOCIATION DYNAMICS OF CYANAMIDE AT 193 nm[J].Acta Physica Sinica,1987,36(6):691-697. |
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| Authors: | XIE XIAO-XIANG I A MCLAREN J B HALPERN and W M JACKSON |
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| Abstract: | The photodissociation dynamics of cyanamide have been investigated. Laser-induced fluorescence (LIF) was used to study the formation of CN(X2∑+) radical in the photodissociation at. 193 nm. A very weak LIF signal from the CN(X) radical was detected at a laser intensity of 0.35 mJ/pulse and the rotational temperature is 1590±90 K. When the laser intensity is high, the LIF signal increased obviously and the population in the ν"= 2 level was observed. The absorption cross section we measured at 193 nm is less than 2.4±10-19cm2 at a temperature of 50℃. A secondary photolysis mechanism can be used to explain the experimental results. |
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