Production of projectile and target K-vacancy in near-symmetric collisions of 60-100 MeV Cu9+ ions with thin Zn target

doi:10.1088/1674-1056/25/3/033401

中国物理B ›› 2016, Vol. 25 ›› Issue (3): 33401-033401.doi: 10.1088/1674-1056/25/3/033401

• ATOMIC AND MOLECULAR PHYSICS • 上一篇下一篇

Production of projectile and target K-vacancy in near-symmetric collisions of 60-100 MeV Cu⁹⁺ ions with thin Zn target

Yipan Guo(郭义盼), Zhihu Yang(杨治虎), Shubin Du(杜树斌), Hongwei Chang(常宏伟), Qingliang Xia(夏清良), Qiumei Xu(徐秋梅)

1. Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China;
2. Department of Nuclear Physics, China Institute of Atomic Energy, Beijing 102413, China;
3. University of Chinese Academy of Sciences, Beijing 100049, China

收稿日期:2015-08-10 修回日期:2015-11-02 出版日期:2016-03-05 发布日期:2016-03-05
通讯作者: Zhihu Yang E-mail:z.yang@impcas.ac.cn
基金资助:
Project supported by the Joint Funds of the National Natural Science Foundation of China (Grant No. U1332122).

Production of projectile and target K-vacancy in near-symmetric collisions of 60-100 MeV Cu⁹⁺ ions with thin Zn target

Yipan Guo(郭义盼)^{1, 3}, Zhihu Yang(杨治虎)¹, Shubin Du(杜树斌)², Hongwei Chang(常宏伟)², Qingliang Xia(夏清良)², Qiumei Xu(徐秋梅)^{1, 3}

1. Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China;
2. Department of Nuclear Physics, China Institute of Atomic Energy, Beijing 102413, China;
3. University of Chinese Academy of Sciences, Beijing 100049, China

Received:2015-08-10 Revised:2015-11-02 Online:2016-03-05 Published:2016-03-05
Contact: Zhihu Yang E-mail:z.yang@impcas.ac.cn
Supported by:
Project supported by the Joint Funds of the National Natural Science Foundation of China (Grant No. U1332122).

摘要/Abstract

摘要： We report studies on both target and projectile K-shell ionization by collisions of Cu⁹⁺ ions on the thin Zn target in the energy range of 60-100 MeV. In this work, the relative ratio for the production of the target to projectile K-vacancy is measured. The result shows that it almost remains stable over this energy range and has good consistency with the predictions by vacancy transfer via the 2pσ-1sσ rotational coupling, which gives experimental evidence for K-vacancy sharing between two partners. Furthermore, the discussion for comparisons between the experimental ionization cross sections and the possible theoretical estimations is presented. These comparisons suggest that the experimental data agree well with those predicted by the Binary-Encounter approximation (BEA) model but are not in good agreement with the modified BEA calculations. It allows us to infer that the direct ionization (and/or excitation) is of importance to initial K-vacancy production before 2pσ-1sσ transitions in the present collision condition.

关键词: vacancy sharing, ionization cross sections, Binary-Encounter approximation model

Abstract: We report studies on both target and projectile K-shell ionization by collisions of Cu⁹⁺ ions on the thin Zn target in the energy range of 60-100 MeV. In this work, the relative ratio for the production of the target to projectile K-vacancy is measured. The result shows that it almost remains stable over this energy range and has good consistency with the predictions by vacancy transfer via the 2pσ-1sσ rotational coupling, which gives experimental evidence for K-vacancy sharing between two partners. Furthermore, the discussion for comparisons between the experimental ionization cross sections and the possible theoretical estimations is presented. These comparisons suggest that the experimental data agree well with those predicted by the Binary-Encounter approximation (BEA) model but are not in good agreement with the modified BEA calculations. It allows us to infer that the direct ionization (and/or excitation) is of importance to initial K-vacancy production before 2pσ-1sσ transitions in the present collision condition.

Key words: vacancy sharing, ionization cross sections, Binary-Encounter approximation model

中图分类号: (Electronic excitation and ionization of atoms (including beam-foil excitation and ionization))

34.50.Fa

34.80.Dp (Atomic excitation and ionization)

郭义盼, 杨治虎, 杜树斌, 常宏伟, 夏清良, 徐秋梅. Production of projectile and target K-vacancy in near-symmetric collisions of 60-100 MeV Cu⁹⁺ ions with thin Zn target[J]. 中国物理B, 2016, 25(3): 33401-033401.

Yipan Guo(郭义盼), Zhihu Yang(杨治虎), Shubin Du(杜树斌), Hongwei Chang(常宏伟), Qingliang Xia(夏清良), Qiumei Xu(徐秋梅). Production of projectile and target K-vacancy in near-symmetric collisions of 60-100 MeV Cu⁹⁺ ions with thin Zn target[J]. Chin. Phys. B, 2016, 25(3): 33401-033401.

参考文献 24

[1]	Garcia J D, Fortner R J and Kavanagh T M 1973 Rev. Mod. Phys. 45 111
[2]	Zhou X M, Zhao Y T, Cheng R, Wang Y, Lei Y, Wang X and Sun Y B 2013 Nucl. Instrum. Methods Phys. Res. Sect. B 299 61
[3]	Mei C X, Zhao Y T, Zhang X A, Ren J R, Zhou X M, Wang X, Lie Y, Liang C H, Li Y Z and Xiao G Q 2012 Laser and Particle Beams 30 665
[4]	Song Z Y, Yang Z H, Xiao G Q, Xu Q M, Chen J, Yang B and Yang Z R 2011 Eur. Phys. J. D 64 197
[5]	Sun J, Watanabe H, Tona M, Watanabe T, Nakamura N, Yamada C and Ohtani S 2008 Phys. Rev. A 77 032901
[6]	Watson R L, Peng Y, Horvat V and Perumal A N 2006 Phys. Rev. A 74 062709
[7]	Horvat V, Watson R L and Peng Y 2009 Phys. Rev. A 79 012708
[8]	Zhang B L, Yang Z H, Du S B, Chang H W, Xue Y L, Song Z Y, Zhu K X and Tian Y 2009 Acta Phys. Sin. 58 6113 (in Chinese)
[9]	Meyerhof W 1973 Phys. Rev. Lett. 31 1341
[10]	Fano U and Lichten W 1965 Phys. Rev. Lett. 14 627
[11]	Barat M and Lichten W 1972 Phys. Rev. A 6 211
[12]	Morenzoni E, Anholt R and Meyerhof W E 1986 Z. Phys. D 4 133
[13]	Knudson A, Burkhalter P and Nagel D 1974 Phys. Rev. A 10 2118
[14]	Macek J, Cairns J and Briggs J 1972 Phys. Rev. Lett. 28 1298
[15]	Feldman L C, Silverman P J and Fortner R J 1976 Nucl. Instrum. Methods 132 29
[16]	Cocke C, Randall R, Varghese S and Curnutte B 1976 Phys. Rev. A 14 2026
[17]	Winters L, Brown M, Ellsworth L, Chiao T, Pettus E and Macdonald J 1975 Phys. Rev. A 11 174
[18]	Mizogawa T, Awaya Y, Kambara T, Kanai Y, Kase M, Kumagai H, Mokler P and Shima K 1990 Phys. Rev. A 42 1275
[19]	ESCA-Atomic, Molecular and Solid State Structure Studied by Means of Electron Spectroscopy (Almquvist and Wiksells, Uppsala 1967)
[20]	Kumar A, Misra D, Kelkar A H, Kadhane U, Singh Y P, Lapicki G, Gulyas L and Tribedi L C 2006 J. Phys. B 39 331
[21]	Winters L, Macdonald J, Brown M, Ellsworth L and Chiao T 1973 Phys. Rev. A 7 1276
[22]	Krause M O and Oliver J H 1979 J. Phys. Chem. Ref. Data 8 329
[23]	http://henke.lbl.gov/optical_constants/filter2.html
[24]	McGuire J and Richard P 1973 Phys. Rev. A 8 1374

Production of projectile and target K-vacancy in near-symmetric collisions of 60-100 MeV Cu⁹⁺ ions with thin Zn target

Production of projectile and target K-vacancy in near-symmetric collisions of 60-100 MeV Cu⁹⁺ ions with thin Zn target

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