Calculations of X-ray spectrum in the recombination processes of electrons into bare uranium ions
文献类型：期刊论文
| 作者 | Wu, Yong; Zeng, Si-Liang; Duan, Bin; Yan, Jun; Wang, Jian-Guo; Dong, Chen-Zhong; Ma, Xin-Wen |
| 刊名 | JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN
 |
| 出版日期 | 2007-07-01 |
| 卷号 | 76页码:6 |
| 关键词 | radiative recombination X-ray bare Uranium ions relativistic Dirac wave functions |
| ISSN号 | 0031-9015 |
| DOI | 10.1143/JPSJ.76.074301 |
| 英文摘要 | Using the fully relativistic Dirac wave functions combining with the channel properties, the radiative recombination (RR) processes of electron into bare uranium (U92+) are investigated in the relative energy approaching to zero, and the X-ray spectrum emitted from the direct RR and sequential cascade processes is simulated. It is found that the direct RR spectrum for capture to the ground and low excited states is in a good agreement with the experimental measurements, but there exist significant discrepancies in the cascade spectrum produced in captures to the high Rydberg states. We also find that the shorter the measurement duration is, the smaller the discrepancies. These results show that the enhancement of RR rate coefficients in the ultra-low energy (< 1 meV) found in numerous experiments mainly comes from the processes for capture to the high Rydberg states. Qualitatively, this conclusion is in harmony with the field-induced recombination (FIR) model proposed recently by Horndl et al. [Phys. Rev. Lett. 95 (2005) 243201], but the theoretical intensity ratios between Ly-alpha(1), and Ly-alpha(2) and between Ly-beta(1) and Ly-beta(2), which are calculated with the FIR effects considered, are in conflict with the measured data. Further experimental and theoretical studies are expected. |
| WOS关键词 | QUANTUM-DEFECT THEORY ; VERY-LOW ENERGIES ; DIELECTRONIC RECOMBINATION ; COLLISION THEORY ; SPECTROSCOPY ; FIELD ; ENHANCEMENT ; DEPENDENCE ; PLASMAS ; COOLER |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000248244500024 |
| 出版者 | PHYSICAL SOC JAPAN |
| 源URL | [http://119.78.100.186/handle/113462/27652]  |
| 专题 | 中国科学院近代物理研究所 |
| 通讯作者 | Wu, Yong |
| 作者单位 | 1.Inst Appl Phys & Computat Math, Key Lab Computat Phys, Beijing 100088, Peoples R China 2.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China 3.NW Normal Univ, Lanzhou 7300070, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wu, Yong,Zeng, Si-Liang,Duan, Bin,et al. Calculations of X-ray spectrum in the recombination processes of electrons into bare uranium ions[J]. JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN,2007,76:6. |
| APA | Wu, Yong.,Zeng, Si-Liang.,Duan, Bin.,Yan, Jun.,Wang, Jian-Guo.,...&Ma, Xin-Wen.(2007).Calculations of X-ray spectrum in the recombination processes of electrons into bare uranium ions.JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN,76,6. |
| MLA | Wu, Yong,et al."Calculations of X-ray spectrum in the recombination processes of electrons into bare uranium ions".JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN 76(2007):6. |
入库方式： OAI收割
来源：近代物理研究所
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