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Interaction of H2+ molecular beam with thin layer graphene foils |
| Min Li(李敏)1, Guo-Feng Qu(曲国峰)1, Yi-Zhou Wang(王亦舟)1, Zhou-Sen Zhu(朱洲森)2, Mian-Gong Shi(师勉恭)1, Mao-Lei Zhou(周茂蕾)1, Dong Liu(刘东)1, Zi-Xu Xu(徐子虚)1, Ming-Jiang Song(宋明江)1, Jun Zhang(张俊)1, Fan Bai(白帆)1, Xiao-Dong Liao(廖小东)1, Ji-Feng Han(韩纪锋)1 |
1 Key Laboratory of Radiation Physics and Technology of the Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University, Chengdu 610064, China;
2 College of Physics and Electronic Engineering, Sichuan Normal University, Chengdu 610066, China |
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Abstract The interaction of MeV H2+ molecular ions with thin layer graphene and graphite foils was studied by using a high-resolution electrostatic analyzer. A large number of fragment protons were observed at zero degree (along the beam direction) when the H2+ beam was passing through the monolayer graphene foil, which indicates that the electron of the H2+ molecular ions can be stripped easily even by the monolayer graphene foil. More trailing than leading protons were found in the energy spectrum, which means significant wake effect was observed in the monolayer graphene foil. The ratio of the numbers of trailing protons over leading protons first increased with the thickness for the much thinner graphene foils, and then decreased with the thickness for the much thicker graphite foils, which indicates that the bending effect of the wake field on the trailing proton varied with the foil thickness.
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Received: 03 April 2019
Revised: 21 June 2019
Accepted manuscript online:
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PACS:
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34.35.+a
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(Interactions of atoms and molecules with surfaces)
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34.20.Gj
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(Intermolecular and atom-molecule potentials and forces)
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34.50.Gb
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(Electronic excitation and ionization of molecules)
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68.65.Pq
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(Graphene films)
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| Fund: Project supported by the National Natural Science Foundation of China (Grant No. 11575121) and the National Magnetic Confinement Fusion Program of China (Grant No. 2014GB125004). |
Corresponding Authors:
Guo-Feng Qu, Ji-Feng Han
E-mail: quguofeng@scu.edu.cn;hanjf@scu.edu.cn
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Cite this article:
Min Li(李敏), Guo-Feng Qu(曲国峰), Yi-Zhou Wang(王亦舟), Zhou-Sen Zhu(朱洲森), Mian-Gong Shi(师勉恭), Mao-Lei Zhou(周茂蕾), Dong Liu(刘东), Zi-Xu Xu(徐子虚), Ming-Jiang Song(宋明江), Jun Zhang(张俊), Fan Bai(白帆), Xiao-Dong Liao(廖小东), Ji-Feng Han(韩纪锋) Interaction of H2+ molecular beam with thin layer graphene foils 2019 Chin. Phys. B 28 093401
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