Visible light emission from surface of nickel bombarded by slow Xeq+ (4 <= q <= 20) ion
文献类型：期刊论文
| 作者 | Xu Qiu-Mei1,2 ; Chen Yan-Hong2; Liu Hui-Ping2; Guo Yi-Pan3; Zhao Hong-Yun2; Yang Zhi-Hu2
|
| 刊名 | ACTA PHYSICA SINICA
 |
| 出版日期 | 2018-04-20 |
| 卷号 | 67页码:8 |
| 关键词 | highly charged ion visible light photon yield potential energy |
| ISSN号 | 1000-3290 |
| DOI | 10.7498/aps.67.20172570 |
| 英文摘要 | Bombarded by slow highly charged ion (SHCI), particles including ions and atoms of metal are excited and ejected from the sample. Optical emission can be observed for the radiative de-excitation of some excited atomic particles. The important information about particle ejection and incident ion neutralization, as well as the nature, the kinetic energy, and the number of the sputtered excited particles can be obtained by studying the optical emission process. The optical emission from the the collisions between slow (V similar to 0.38V(Bohr)) highly charged Xeq+ (4 <= q <= 20) ions and high purity Ni (99.995%) surface is studied. The experiment is carried out at the 320 kV for multi-discipline research with HCIs in the Institute of Modern Physics, Chinese Academy of Sciences. The spectral lines are analyzed by using an Sp-2558 spectrometer equipped with a pattern of 1200 groves/mm blazed at 500 nm and an R955 photomultiplier tube at the exit slit. The target beam current corresponding to the dwell time is recorded, which can be translated into the incident ion current. Based on the formula of Y-lambda = N-lambda/(I-t/C x e x q), the spectral line intensity is normalized. The normalized spectrum can be obtained from the interaction of 0.38V(Bohr) Xe20+ ions with Ni surface in a wavelength range of 400-510 nm. The species at excited state can be identified by comparing the wavelengths of spectral lines with those in the standard spectroscopic table. Most of the observed spectral lines are identified as being from the electron transitions of Ni I 3d(9) (D-2)4p-3d(9)(D-2(5/2))4d, Ni I 3d(8) (F-3)4s4p(P-3 degrees)-3d(8)4s(F-4)5s and Ni II 3p(6)3d(9)-3p(6)3d(8)(P-3)4s, as well as Xe I 5p(5)(P-2 degrees(3/2))6s-5p(5)(P-2 degrees(3/2))8p, Xe II 5p(4) (P-3(2))6p-5p(4) (P-3(2))6d and Xe III 5s(2)5p (3)(D-2)6s-5s(2)5p(3)(D-2)6p. Compared with the single charged ion, some neutralized incident ions yield Xe I, Xe II, Xe III spectral lines. The photon yields of spectral lines, such as Xe II 410.419, Xe III 430.444, Xe II 434.200, Xe II 486.254, Ni I 498.245, Ni I 501.697, Ni I 503.502, Ni I 505.061 and Ni I 508.293 nm, are presented each as a function of charge state of incident ion. The results show that the photon yield increases with the increase of the charge state, which is consistent with the potential energy of the incident ion. The potential energy is the driving force for photon emission of excited Ni atom. The neutralization of Xeq+ is in good agreement with that indicated by the classical over-the-barrier model. |
| WOS关键词 | HIGHLY-CHARGED IONS ; ATOMIC EXCITATIONS ; RADIATIVE LIFETIMES ; TRANSITION-PROBABILITIES ; PHOTON-EMISSION ; BARRIER MODEL ; AR IONS ; TARGETS ; ENERGY ; ACCELERATION |
| 资助项目 | National Natural Science Foundation of China[U1732269] |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000443194600006 |
| 出版者 | CHINESE PHYSICAL SOC |
| 资助机构 | National Natural Science Foundation of China |
| 源URL | [http://119.78.100.186/handle/113462/59262]  |
| 专题 | 近代物理研究所_实验物理中心 |
| 通讯作者 | Yang Zhi-Hu |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Gansu, Peoples R China 3.Nanjing Univ Aeronaut & Astronaut, Coll Astronaut, Nanjing 210016, Jiangsu, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xu Qiu-Mei,Chen Yan-Hong,Liu Hui-Ping,et al. Visible light emission from surface of nickel bombarded by slow Xeq+ (4 <= q <= 20) ion[J]. ACTA PHYSICA SINICA,2018,67:8. |
| APA | Xu Qiu-Mei,Chen Yan-Hong,Liu Hui-Ping,Guo Yi-Pan,Zhao Hong-Yun,&Yang Zhi-Hu.(2018).Visible light emission from surface of nickel bombarded by slow Xeq+ (4 <= q <= 20) ion.ACTA PHYSICA SINICA,67,8. |
| MLA | Xu Qiu-Mei,et al."Visible light emission from surface of nickel bombarded by slow Xeq+ (4 <= q <= 20) ion".ACTA PHYSICA SINICA 67(2018):8. |
入库方式： OAI收割
来源：近代物理研究所
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