中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
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
DOI10.1143/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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