The effects of electron transfer on the energy loss of slow He2+, C2+, and C4+ ions penetrating a graphene fragment
文献类型：期刊论文
| 作者 | Mao, Fei1,2; Zhang, Chao1,2; Gao, Cong-Zhang1,2; Dai, Jinxia1,2; Zhang, Feng-Shou1,2,3 |
| 刊名 | JOURNAL OF PHYSICS-CONDENSED MATTER
 |
| 出版日期 | 2014-02-26 |
| 卷号 | 26 |
| 关键词 | Graphene Fragment Electronic Stopping Tddft-md Electron Transfer |
| ISSN号 | 0953-8984 |
| DOI | 10.1088/0953-8984/26/8/085402 |
| 文献子类 | Article |
| 英文摘要 | Electronic energy loss in the collision processes of slow ions with a graphene fragment is investigated by combining ab initio time-dependent density functional theory calculations for electrons with molecular dynamics simulations for ions in real time and real space. We study the electronic energy loss of slow He2+, C2+, and C4+ ions penetrating the graphene fragment as a function of the ion velocity, and establish the velocity-proportional energy loss for low-charged ions down to 0.1 a.u. One mechanism clarified in the simulations for electron transfer is polarization capture, which is effective for bare ions at low velocities. The other one is resonance capture, by which the incident ion can capture electrons from the graphene fragment to its electron affinity levels, which have the same, or nearly the same, energy as those of the electron donor levels. The results demonstrate that the nonlinear behavior of energy loss of C4+ is attributed to the large number of electrons captured by this multi-charged ion during the collision. |
| WOS关键词 | DENSITY-FUNCTIONAL THEORY ; NONADIABATIC MOLECULAR-DYNAMICS ; ATOM-SURFACE COLLISIONS ; CHARGE-TRANSFER ; PROTONS ; THRESHOLD ; EHRENFEST ; OCTOPUS ; TOOL |
| 资助项目 | European Commission[269131] |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000331952100007 |
| 出版者 | IOP PUBLISHING LTD |
| 源URL | [http://119.78.100.186/handle/113462/49987]  |
| 专题 | 中国科学院近代物理研究所 |
| 通讯作者 | Mao, Fei |
| 作者单位 | 1.Beijing Normal Univ, Coll Nucl Sci & Technol, Minist Educ, Key Lab Beam Technol & Mat Modificat, Beijing 100875, Peoples R China 2.Beijing Radiat Ctr, Beijing 100875, Peoples R China 3.Natl Lab Heavy Ion Accelerator Lanzhou, Ctr Theoret Nucl Phys, Lanzhou 730000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Mao, Fei,Zhang, Chao,Gao, Cong-Zhang,et al. The effects of electron transfer on the energy loss of slow He2+, C2+, and C4+ ions penetrating a graphene fragment[J]. JOURNAL OF PHYSICS-CONDENSED MATTER,2014,26. |
| APA | Mao, Fei,Zhang, Chao,Gao, Cong-Zhang,Dai, Jinxia,&Zhang, Feng-Shou.(2014).The effects of electron transfer on the energy loss of slow He2+, C2+, and C4+ ions penetrating a graphene fragment.JOURNAL OF PHYSICS-CONDENSED MATTER,26. |
| MLA | Mao, Fei,et al."The effects of electron transfer on the energy loss of slow He2+, C2+, and C4+ ions penetrating a graphene fragment".JOURNAL OF PHYSICS-CONDENSED MATTER 26(2014). |
入库方式： OAI收割
来源：近代物理研究所
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