ATOMIC AND MOLECULAR PHYSICS |
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High Energy Inner Shell Photoelectron Diffraction in CO$_2$ |
Xiaohong Li1,2, Bocheng Ding1,2, Yunfei Feng1,2, Ruichang Wu1,2, Lifang Tian1,2, Jianye Huang1,2, and Xiaojing Liu1,2* |
1School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China 2Center for Transformative Science, ShanghaiTech University, Shanghai 201210, China
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Cite this article: |
Xiaohong Li, Bocheng Ding, Yunfei Feng et al 2022 Chin. Phys. Lett. 39 033401 |
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Abstract Photoelectron diffraction is an effective tool to probe the structures of molecules. The higher the photoelectron kinetic energy is, the higher order the diffraction pattern is disclosed in. Up to date, either the multi-atomic molecule with the photoelectron kinetic energy below 150 eV or the diatomic molecule with 735 eV photoelectron has been experimentally reported. In this study, we measured the diffraction pattern of C $1s$ and O $1s$ photoelectrons in CO$_2$ with 319.7 and 433.5 eV kinetic energies, respectively. The extracted C–O bond lengths are longer than the C–O bond length at the ground state, which is attributed to the asymmetric fragmentation that preferentially occurs at the longer chemical bond side during the zero-energy asymmetric vibration.
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Received: 29 November 2021
Published: 01 March 2022
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PACS: |
34.50.-s
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(Scattering of atoms and molecules)
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33.80.-b
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(Photon interactions with molecules)
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34.80.Gs
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(Molecular excitation and ionization)
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