低能高电荷态离子(4≤ q ≤7)与He碰撞中双俘获与转移电离的截面反转效应

吕瑛; 陈熙萌; 曹柱荣; 吴卫东

doi:10.7498/aps.59.3892

摘要

基于入射离子双俘获后势能沉积与双电离靶离子势能的比值定义了势能参数Ω,研究了低能高电荷态离子（q=4，5，6，7）与He 原子碰撞系统中双俘获和转移电离反应道的选择规律.研究发现，在Ω坐标下，双俘获和转移电离存在截面反转效应，ΩΩ≥10时转移电离成为双电子转移过程主反应道.

关键词:

Based on the potential parameter Ω, which was defined as energy deposits ratio of incidence ion with target ion after double electron capture, the selection rule between double electron capture and transfer ionization of helium target induced by Aq+ (q=4,5,6,7) ions was studied. It is found that there is a cross point for the cross-section ratio curve of double electron capture and transfer ionization at Ω=10, and for ΩΩ≥10 the transfer ionization is a key reaction channel of double electron transfer.

Keywords:

作者及机构信息

(1)兰州大学核科学与技术学院，兰州 730000; (2)中国工程物理研究院激光聚变研究中心，绵阳 621900

基金项目: 国家自然科学基金（批准号：10134010, 10375080, 10304019）资助的课题.

Authors and contacts

(1)兰州大学核科学与技术学院，兰州 730000; (2)中国工程物理研究院激光聚变研究中心，绵阳 621900

参考文献

[1]	［1］Rescigno T N, Baertschy M, Isaacs W A 1999 Science 286 2474
[2]	［2］McCurdy C W, Rescigno T N 2000 Phys. Rev. A 62 32712
[3]	［3］McGuire J H, Godunov A L, Tolmanov S G 2001 Phys. Rev. A 63 052706
[4]	［4］Cao S P, Ma X W, Dorn A, Dürr M, Ullrich J 2007 Acta Phys. Sin. 56 6386 (in Chinese) ［曹士娉、马新文、Dorn A、 Dürr M、 Ullrich J 2007物理学报56 6386］
[5]	［5］Andersson H, Astner G, Cederquist H 1988 J. Phys. B 21 L187
[6]	［6］Iwai T, Kaneko Y, Kimura M 1984 J. Phys. B 17 L95
[7]	［7］Tawara H, Iwai T, Kaneko Y 1985 J. Phys. B 18 337
[8]	［8］Mann R 1986 Z. Phys. D 3 85
[9]	［9］Selberg N, Biedermann C, Cederquist H 1997 Phys. Rev. A 56 6
[10]	］Fléchard X, Harel C, Jouin H 2001 J. Phys. B 34 2759
[11]	］Cai X H, Chen X M, Shen Z Y 1996 Nucl. Instum. Meth. Phys. Res. B 114 208
[12]	］Cai X H, Shen Z Y, Chen X M 1997 Atca Phys. Sin. 46 6 (in Chinese) ［蔡晓红、申自勇、陈熙萌1997 物理学报 46 6 ］
[13]	］Cao Z R, Cai X H, Yu D Y 2004 Atca Phys. Sin. 53 2943 (in Chinese) ［曹柱荣、蔡晓红、于得洋 2004 物理学报 53 2943 ］
[14]	］Müller A, Groh W, Salzborn E 1983 Phys. Rev.Lett. 51 107
[15]	］Xu K Z 2000 Advanced Atomic and Molecular Physics (Beijing: Science Press) (in Chinese) ［徐克尊 2000 高等原子分子物理学 (北京:科学出版社)］
[16]	］Justiniano E, Cocke C L, Gray T J 1984 Phys. Rev. A 29 1088

施引文献

[1]	［1］Rescigno T N, Baertschy M, Isaacs W A 1999 Science 286 2474
[2]	［2］McCurdy C W, Rescigno T N 2000 Phys. Rev. A 62 32712
[3]	［3］McGuire J H, Godunov A L, Tolmanov S G 2001 Phys. Rev. A 63 052706
[4]	［4］Cao S P, Ma X W, Dorn A, Dürr M, Ullrich J 2007 Acta Phys. Sin. 56 6386 (in Chinese) ［曹士娉、马新文、Dorn A、 Dürr M、 Ullrich J 2007物理学报56 6386］
[5]	［5］Andersson H, Astner G, Cederquist H 1988 J. Phys. B 21 L187
[6]	［6］Iwai T, Kaneko Y, Kimura M 1984 J. Phys. B 17 L95
[7]	［7］Tawara H, Iwai T, Kaneko Y 1985 J. Phys. B 18 337
[8]	［8］Mann R 1986 Z. Phys. D 3 85
[9]	［9］Selberg N, Biedermann C, Cederquist H 1997 Phys. Rev. A 56 6
[10]	］Fléchard X, Harel C, Jouin H 2001 J. Phys. B 34 2759
[11]	］Cai X H, Chen X M, Shen Z Y 1996 Nucl. Instum. Meth. Phys. Res. B 114 208
[12]	］Cai X H, Shen Z Y, Chen X M 1997 Atca Phys. Sin. 46 6 (in Chinese) ［蔡晓红、申自勇、陈熙萌1997 物理学报 46 6 ］
[13]	］Cao Z R, Cai X H, Yu D Y 2004 Atca Phys. Sin. 53 2943 (in Chinese) ［曹柱荣、蔡晓红、于得洋 2004 物理学报 53 2943 ］
[14]	］Müller A, Groh W, Salzborn E 1983 Phys. Rev.Lett. 51 107
[15]	］Xu K Z 2000 Advanced Atomic and Molecular Physics (Beijing: Science Press) (in Chinese) ［徐克尊 2000 高等原子分子物理学 (北京:科学出版社)］
[16]	］Justiniano E, Cocke C L, Gray T J 1984 Phys. Rev. A 29 1088

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