Photodissociation dynamics of OClO at 157 nm
Photodissociation dynamics of OClO at 157 nm
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DOI：
10.1063/1.476466
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发表时间：
1998-06
影响因子：
4.4
通讯作者：
J. J. Lin-J.;D. W. Hwang;Yuan‐Pern Lee;Xueming Yang
中科院分区：
文献类型：
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作者：
J. J. Lin-J.;D. W. Hwang;Yuan‐Pern Lee;Xueming Yang
使用光碎片平移光谱技术研究了 OClO 在 157.6 nm 激发下的光解离。观察到两种独特的化学解离通道；一是二元解离过程，OClO+hν→ClO+O；另一种是三重解离过程，OClO+hν→Cl+O+O。二元解离通道与三元解离通道的分支比确定为0.59:0.41。在 OClO→ClO(X 2Π)+O(3P,1D) 通道中观察到 ClO 产物的双峰振动分布，这意味着二元解离过程中可能存在两种独特的解离路径。双峰分布可能是由两个激发电子态的两条解离途径引起的：OClO的D(2A1)和E(2B1)态。二元解离通道的各向异性参数测量结果进一步支持了这些论点。实验结果还表明OClO+hν→ClO(X 2Π)+O(1S)和OClO+hν→ClO(A 2Π...
Photodissociation of OClO at 157.6 nm excitation has been investigated using the photofragment translational spectroscopic technique. Two distinctive chemical dissociation channels have been observed; one is the binary dissociation process, OClO+hν→ClO+O; the other one is the triple dissociation process, OClO+hν→Cl+O+O. The branching ratio of the binary dissociation channel to the triple dissociation channel is determined to be 0.59:0.41. Bimodal vibrational distribution of the ClO product has been observed for the OClO→ClO(X 2Π)+O(3P,1D) channel, implying that two distinctive dissociation routes possibly exist in the binary dissociation process. The bimodal distribution is likely caused by the two dissociation pathways from two excited electronic states: the D(2A1) and E(2B1) states of OClO. These arguments are further supported by the results of the anisotropy parameter measurements for the binary dissociation channels. Experimental results also show that the OClO+hν→ClO(X 2Π)+O(1S) and OClO+hν→ClO(A 2Π...