Time-resolved Fourier transform emission spectroscopy of A2Π-X2Σ+ infrared transition of the CN radical
Time-resolved Fourier transform emission spectroscopy of A2Π-X2Σ+ infrared transition of the CN radical
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DOI：
10.1016/j.jms.2008.04.002
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发表时间：
2008-07-01
影响因子：
1.4
通讯作者：
Kawaguchi, K.
中科院分区：
文献类型：
--
作者：
Civis, S.;Sedivcova-Uhlikova, T.;Kawaguchi, K.
用时间分辨傅里叶变换光谱在1850-3100 cm(-1)范围内观测到(CN)-C-12-N-14自由基的A(2)Pi-X-2 Sigma(+)Delta v=-3带，波数分辨率为0.025 cm(-1)。该自由基是在脉冲正柱放电中在氰化氢和氦的混合物中产生的。V=0-3，1-4的七个谱带。分析了2-5、3-6、4-7、5-8和6-9，通过801条直线的最小二乘拟合得到了每个状态的分子常数。脉冲放电可以有效地在激发态A(2)PI中产生CN。A(2)PI和X-2 Sigma(+)态的振动激发温度分别为6680 835K和6757+/-534K。在关闭放电后的时间内，A(2)PI的布居数是X-2 Sigma(+)：1态的4%。(C)2008 Elsevier Inc.保留所有权利。
The A(2)Pi-X-2 Sigma(+) Delta v = -3 bands of the (CN)-C-12-N-14 radical have been observed by time-resolved Fourier transform spectroscopy in the 1850-3100 cm(-1) region with a wavenumber resolution of 0.025 cm(-1). The radical was produced in a pulsed positive column discharge in a cyanogene and helium mixture. Seven bands of v = 0-3, 1-4. 2-5, 3-6, 4-7, 5-8, and 6-9 were analyzed to give the molecular constants of each state by least-squares fitting of 801 lines. The pulsed discharge was found to be efficient for production of CN in the excited A(2)Pi state. The vibrational excitation temperature was determined to be 6680 835 K and 6757 +/- 534 K for the A(2)Pi and X-2 Sigma(+), states, respectively. The population of the A(2)Pi Was found to be 4% of that of the X-2 Sigma(+):1 State in the time after turning off the discharge. (c) 2008 Elsevier Inc. All rights reserved.