Journal
JOURNAL OF PHYSICAL CHEMISTRY A
Volume 125, Issue 12, Pages 2573-2580Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.jpca.1c00754
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Funding
- Natural Science Foundation of China [22003062, 21625301]
- Chinese Academy of Sciences [YZ201565]
- University of Science and Technology of China
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The study reveals that energy-resonant charge transfer plays a dominant role in large impact-parameter reactions, and the charge exchange reactions are much slower than photoelectron detachment. Structural relaxations of the target molecule are allowed in multiple dimensions of freedom during charge transfer.
We report an ion velocity imaging study of the charge exchange reactions between Ar+ ion and trans-/cis-dichloroethylene in the collision energy range of 2.1-9.5 eV, and we find that the energy-resonant charge transfer plays a dominant role in the large impact-parameter reaction. The parent yields C2H2Cl2+ in the high-lying excited states are directly produced in the charge exchange reactions, while they prefer spontaneous fragmentations in photoionization. This significant difference indicates that the present charge exchange reactions are much slower than the photoelectron detachment. The structural relaxations of the target molecule are allowed in multiple dimensions of freedom during the charge transfer, which should be frequently observed for the charge exchange reactions with large molecules.
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