Imaging CO2 Photodissociation at 157 nm: State-to-State Correlations between CO(ν) and O(3P j=0,1,2)
The spin-forbidden CO(ν) + O(3P j ) channel produced by 157 nm photodissociation of CO2 was investigated by velocity map imaging. O(3 P) images were measured for the three 3P j spin−orbit states (j = 0, 1, and 2), and the CO vibrational-state distributions that correlate to the O(3P j=0,1,2) spin−or...
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Published in | The journal of physical chemistry letters Vol. 1; no. 12; pp. 1861 - 1865 |
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Main Authors | , , , , |
Format | Journal Article |
Language | English |
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American Chemical Society
17.06.2010
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Abstract | The spin-forbidden CO(ν) + O(3P j ) channel produced by 157 nm photodissociation of CO2 was investigated by velocity map imaging. O(3 P) images were measured for the three 3P j spin−orbit states (j = 0, 1, and 2), and the CO vibrational-state distributions that correlate to the O(3P j=0,1,2) spin−orbit product were determined. Nearly all energetically allowed product CO(ν) levels (i.e., ν ≤ 8) are observed, with minor differences in the CO vibrational distributions for the three channels. The angular anisotropy, which also shows minor differences for the three j channels, is found to decrease with increasing CO vibrational excitation, suggesting that the lower vibrational states are produced by photodissociation from a more linear OCO geometry. Fits to the total kinetic energy distributions suggest that the CO rotational energy is relatively cold. The overall results further suggest that the three spin−orbit pathways are not mixed completely in the exit channel. |
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AbstractList | The spin-forbidden CO(ν) + O(3P j ) channel produced by 157 nm photodissociation of CO2 was investigated by velocity map imaging. O(3 P) images were measured for the three 3P j spin−orbit states (j = 0, 1, and 2), and the CO vibrational-state distributions that correlate to the O(3P j=0,1,2) spin−orbit product were determined. Nearly all energetically allowed product CO(ν) levels (i.e., ν ≤ 8) are observed, with minor differences in the CO vibrational distributions for the three channels. The angular anisotropy, which also shows minor differences for the three j channels, is found to decrease with increasing CO vibrational excitation, suggesting that the lower vibrational states are produced by photodissociation from a more linear OCO geometry. Fits to the total kinetic energy distributions suggest that the CO rotational energy is relatively cold. The overall results further suggest that the three spin−orbit pathways are not mixed completely in the exit channel. |
Author | Jiang, Bo Parker, David H Liu, Fuchun Chen, Zhichao Yang, Xueming |
Author_xml | – sequence: 1 givenname: Zhichao surname: Chen fullname: Chen, Zhichao – sequence: 2 givenname: Fuchun surname: Liu fullname: Liu, Fuchun – sequence: 3 givenname: Bo surname: Jiang fullname: Jiang, Bo – sequence: 4 givenname: Xueming surname: Yang fullname: Yang, Xueming email: xmyang@dicp.ac.cn, parker@science.ru.nl – sequence: 5 givenname: David H surname: Parker fullname: Parker, David H email: xmyang@dicp.ac.cn, parker@science.ru.nl |
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Copyright | Copyright © 2010 American Chemical Society |
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Snippet | The spin-forbidden CO(ν) + O(3P j ) channel produced by 157 nm photodissociation of CO2 was investigated by velocity map imaging. O(3 P) images were measured... |
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SubjectTerms | Dynamics, Clusters, Excited States |
Title | Imaging CO2 Photodissociation at 157 nm: State-to-State Correlations between CO(ν) and O(3P j=0,1,2) |
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