中国物理B ›› 2016, Vol. 25 ›› Issue (2): 23402-023402.doi: 10.1088/1674-1056/25/2/023402

• SPECIAL TOPIC—Soft matter and biological physics (Review) • 上一篇    下一篇

X-ray emission from 424-MeV/u C ions impacting on selected target

Xian-Ming Zhou(周贤明), Rui Cheng(程锐), Yu Lei(雷瑜), Yuan-Bo Sun(孙渊博), Yu-Yu Wang(王瑜玉), Xing Wang(王兴), Ge Xu(徐戈), Ce-Xiang Mei(梅策香), Xiao-An Zhang(张小安), Xi-Meng Chen(陈熙萌), Guo-Qing Xiao(肖国青), Yong-Tao Zhao(赵永涛)   

  1. 1. Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China;
    2. School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, China;
    3. University of Chinese Academy of Sciences, Beijing 100049, China;
    4. Normal College of Xianyang, Xianyang 712000, China;
    5. School of Science, Xi'an Jiaotong University, Xi'an 710049, China
  • 收稿日期:2015-09-08 修回日期:2015-11-05 出版日期:2016-02-05 发布日期:2016-02-05
  • 通讯作者: Yong-Tao Zhao E-mail:zhaoyongtao@mail.xjtu.edu.cn
  • 基金资助:

    Project supported by the National Basic Research Program of China (Grant No. 2010CB832902), the National Natural Science Foundation of China (Grant Nos. 11505248, 11375034, U1532263, 11275241, 11205225, 11105192, and 11275238), and the Scientific Research Program of Education Bureau of Shaanxi Province, China (Grant No. 15JK1793).

X-ray emission from 424-MeV/u C ions impacting on selected target

Xian-Ming Zhou(周贤明)1,2,3, Rui Cheng(程锐)1, Yu Lei(雷瑜)1, Yuan-Bo Sun(孙渊博)1,3, Yu-Yu Wang(王瑜玉)1, Xing Wang(王兴)1,5, Ge Xu(徐戈)1,3, Ce-Xiang Mei(梅策香)4, Xiao-An Zhang(张小安)4, Xi-Meng Chen(陈熙萌)2, Guo-Qing Xiao(肖国青)1, Yong-Tao Zhao(赵永涛)1,5   

  1. 1. Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China;
    2. School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, China;
    3. University of Chinese Academy of Sciences, Beijing 100049, China;
    4. Normal College of Xianyang, Xianyang 712000, China;
    5. School of Science, Xi'an Jiaotong University, Xi'an 710049, China
  • Received:2015-09-08 Revised:2015-11-05 Online:2016-02-05 Published:2016-02-05
  • Contact: Yong-Tao Zhao E-mail:zhaoyongtao@mail.xjtu.edu.cn
  • Supported by:

    Project supported by the National Basic Research Program of China (Grant No. 2010CB832902), the National Natural Science Foundation of China (Grant Nos. 11505248, 11375034, U1532263, 11275241, 11205225, 11105192, and 11275238), and the Scientific Research Program of Education Bureau of Shaanxi Province, China (Grant No. 15JK1793).

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摘要：

The K-shell x-rays of Ti, V, Fe, Co, Ni, Cu, and Zn induced by 424-MeV/u C6+ ion impact are measured. It is found that the K x-ray shifts to the high energy side and the intensity ratio of K/K is larger than the atomic data, owing to the L-shell multiple-ionization. The x-ray production cross sections are deduced from the experimental counts and compared with the binary encounter approximation (BEA), plane wave approximation (PWBA) and energy-loss Coulomb-repulsion perturbed-stationary-state relativistic (ECPSSR) theoretical predictions. The BEA model with considering the multiple-ionization fluorescence yield is in better consistence with the experimental results. In addition, the cross section as a function of target atomic K-shell binding energy is presented.

关键词: high energy heavy ions, ion-atom collisions, x-ray emission

Abstract:

The K-shell x-rays of Ti, V, Fe, Co, Ni, Cu, and Zn induced by 424-MeV/u C6+ ion impact are measured. It is found that the K x-ray shifts to the high energy side and the intensity ratio of K/K is larger than the atomic data, owing to the L-shell multiple-ionization. The x-ray production cross sections are deduced from the experimental counts and compared with the binary encounter approximation (BEA), plane wave approximation (PWBA) and energy-loss Coulomb-repulsion perturbed-stationary-state relativistic (ECPSSR) theoretical predictions. The BEA model with considering the multiple-ionization fluorescence yield is in better consistence with the experimental results. In addition, the cross section as a function of target atomic K-shell binding energy is presented.

Key words: high energy heavy ions, ion-atom collisions, x-ray emission

中图分类号:  (Atomic excitation and ionization)

  • 34.80.Dp
32.30.Rj (X-ray spectra) 32.80.Aa (Inner-shell excitation and ionization)