Chemiluminescent ion-molecule reactions: Rotational-vibrational population distributions of CH+(A 1Pi) and CD+(A 1Pi) from C++H2 and C++D2 collisions
Chemiluminescent ion-molecule reactions: Rotational-vibrational population distributions of CH+(A 1Pi) and CD+(A 1Pi) from C++H2 and C++D2 collisions
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DOI：
10.1063/1.438230
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发表时间：
1979-12
期刊：
影响因子：
2.3
通讯作者：
I. Kusunoki;C. Ottinger
中科院分区：
文献类型：
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作者：
I. Kusunoki;C. Ottinger
由于C+离子与H2和D2分子的低能（3-8 eVCM）离子-分子反应，观察到3000-5000 A范围内的光发射。大部分的发射是由于CH+和CD+的（A1 → X1 → +）跃迁，它们各自具有6和20 A的半高宽光学分辨率。观察到更高的J旋转线比从传统的CH+光源的光谱中存在。在计算机上模拟所观察到的光谱，考虑到强烈的依赖性的电子跃迁矩的核间距，如从头计算。计算了每条转动线J的相对带振子强度fv′v″（J），发现由于离心拉伸，相对带振子强度fv′v″（J）强烈依赖于J。这些计算使用R质心近似以及精确的带振子强度公式完成。从光谱模拟，准确的转动和振动的人口分布。提出了一个简单的模型，它...
Optical emission in the 3000–5000 A range was observed as a result of low‐energy (3–8 eVCM) ion–molecule reactions of C+ ions with H2 and D2 molecules. Most of the emission is due to (A 1Π→X 1Σ+) transitions of CH+ and CD+, which were each studied with 6 A and 20 A FWHM optical resolution. Rotational lines of much higher J were observed than are present in spectra from conventional CH+ light sources. The observed spectra were simulated on a computer, taking into account the strong dependence of the electronic transition moment on the internuclear distance, as given by ab initio calculations. Relative band oscillator strengths fv′v″(J) were calculated for each rotational line J and were found to depend strongly on J as result of centrifugal stretching. These calculations were done using the R centroid approximation as well as the exact band oscillator strength formula. From the spectrum simulations, accurate rotational and vibrational population distributions were derived. A simple model is proposed which ...