兰州大学机构库 >核科学与技术学院
Anomalous neutralization characteristics in N a+ neutralization on Al(111) surfaces
Liu, Pinyang1,2,3; Yin, Liyuan1,2,3; Zhang, Zheng1,2,3; Ding, Bin1,2,3; Shi, Yuanqing1,2,3; Li, Yin1,2,3; Zhang, Xin1,2,3; Song, Xiaoxun1,2,3; Guo, YL(郭艳玲)1,2,3; Chen, L(陈林)1,2,3; Chen, XM(陈熙萌)1,2,3; Gainullin, Ivan K.1,2,3; Esaulov, Vladimir A.1,2,3
2020
Source PublicationPhysical Review A
ISSN24699934
Volume101Issue:3
AbstractThe jellium model of free electron gas and its extended version have been widely used to understand the neutralization of alkali-metal ions on metal surfaces. We report an unexpected deviation from its prediction that we observed in the neutralization of Na+ ions scattering from an Al(111) surface. We find that the neutralization probability decreases monotonically with increasing ion velocity for the specular scattering condition, which is consistent with the well-known parallel velocity effect. However, the neutralization probability exhibits an unexpected bell shape with the variation of outgoing angle for a given incident energy. Calculations based on the jellium model using the rate equation and including the dynamic parallel velocity effect are presented. Their results agree with the velocity dependence of the neutral fraction, but completely fail in reproducing the angle dependence. This anomalous angle dependence could be due to the appearance of inelastic processes, corresponding to inner 2p electron promotion in hard encounters with Al atoms for large incidence angles, when the interatomic distances become small. This can lead to the formation of autoionizing Na states that result in the formation of extra Na+ ions, not accounted for in the jellium model.
© 2020 American Physical Society.
DOI10.1103/PhysRevA.101.032706
Indexed BySCIE ; EI
Language英语
Funding ProjectInternational Cooperation and Exchange Programme[] ; Lanzhou University[GDT20186200141] ; National Natural Science Foundation of China[11405078]
WOS Research AreaOptics ; Physics
WOS SubjectOptics ; Physics, Atomic, Molecular & Chemical
WOS IDWOS:000522063800004
PublisherAmerican Physical Society
EI Accession Number20201608431446
EI KeywordsElectron gas ; Electrons ; Metal ions ; Metals
EI Classification NumberMetallurgy:531.1
Original Document TypeJournal article (JA)
Citation statistics
Cited Times:6[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.lzu.edu.cn/handle/262010/418020
Collection核科学与技术学院
Corresponding AuthorLiu, Pinyang
Affiliation1.School of Nuclear Science and Technology, Lanzhou University, Lanzhou; 730000, China
2.Faculty of Physics, Moscow State University, Leninskie Gory 1 # 2, Moscow; 119992, Russia
3.Institut des Sciences Moléculaires d'Orsay and CNRS, UMR 8214, Institut des Sciences Moléculaires d'Orsay, Orsay ISMO, Université-Paris Saclay, Bâtiment 351, Orsay; 91405, France
First Author AffilicationSchool of Nuclear Science and Technology
Corresponding Author AffilicationSchool of Nuclear Science and Technology
Recommended Citation
GB/T 7714
Liu, Pinyang,Yin, Liyuan,Zhang, Zheng,et al. Anomalous neutralization characteristics in N a+ neutralization on Al(111) surfaces[J]. Physical Review A,2020,101(3).
APA Liu, Pinyang.,Yin, Liyuan.,Zhang, Zheng.,Ding, Bin.,Shi, Yuanqing.,...&Esaulov, Vladimir A..(2020).Anomalous neutralization characteristics in N a+ neutralization on Al(111) surfaces.Physical Review A,101(3).
MLA Liu, Pinyang,et al."Anomalous neutralization characteristics in N a+ neutralization on Al(111) surfaces".Physical Review A 101.3(2020).
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