二氯碘甲烷（ICH₂Cl）→ 二氯甲烷（CH₂Cl）+ 碘离子（I⁺）/碘（I）的光解离动力学：304纳米和277纳米处的光碎片平动光谱
Photodissociation dynamics of ICH2Cl → CH2Cl + I*/I: photofragment translational spectroscopy at 304 and 277 nm.
作者信息
Cheng Min, Lin Dan, Hu Lili, Du Yikui, Zhu Qihe
机构信息
Beijing National Laboratory of Molecular Sciences, State Key Laboratory of Molecular Reaction Dynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
出版信息
Phys Chem Chem Phys. 2016 Jan 28;18(4):3165-72. doi: 10.1039/c5cp06080j.
The photodissociation dynamics of ICH2Cl → CH2Cl + I*/I at 304 and 277 nm has been investigated with our mini-TOF photofragment translational spectrometer with a weak acceleration field of <1 V cm(-1). Many peaks are resolved or partially resolved in the TOF spectra and the photofragment translational spectra (PTS) of both the I*((2)P1/2) channel and the I((2)P3/2) channel. These resolved peaks are assigned to the C-Cl stretch vibrational states of the CH2Cl fragment. The rotational energy ER of the CH2Cl fragment is highly excited due to its asymmetric structure. The value of ER/ET is measured to be about 0.71. In the I* channel, the partitioning of the available energy Eavl into the translational energy ET, the rotational energy ER, and the vibrational energy EV for each resolved vibrational state has been calculated.
利用我们的微型飞行时间光碎片平移光谱仪，在小于1 V cm⁻¹的弱加速场下，研究了ICH₂Cl在304和277 nm处的光解离动力学，生成CH₂Cl + I*/I。在I*((2)P1/2)通道和I((2)P3/2)通道的飞行时间光谱和光碎片平移光谱（PTS）中，许多峰被分辨或部分分辨。这些分辨出的峰被归属于CH₂Cl碎片的C-Cl伸缩振动状态。由于CH₂Cl碎片的不对称结构，其转动能量ER被高度激发。测得ER/ET的值约为0.71。在I*通道中，已计算出每个分辨出的振动状态下，可用能量Eavl在平动能量ET、转动能量ER和振动能量EV之间的分配情况。
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