Xe54+离子与Xe原子碰撞过程中的辐射电子俘获及退激发辐射的理论研究

梁腾; 马堃; 陈曦; 颉录有; 董晨钟; 邵曹杰; 于得洋; 蔡晓红

doi:10.7498/aps.64.153401

摘要

基于多组态Dirac-Fock理论方法和冲量近似, 对Xe54+与Xe在197 MeV/u碰撞能量下, 炮弹离子的俘获及退激发过程进行了理论研究. 计算了炮弹离子从中性靶原子俘获一个电子到nl (n=1, 2, 3, 4, 5; l=s, p, d) 轨道上的辐射电子俘获截面和相应的辐射光子能量, 以及俘获末态退激发辐射跃迁的能量和概率. 结合这些计算结果, 进一步模拟了碰撞产生的炮弹离子的退激发X射线谱的结构, 并与兰州重离子加速器装置上的最新实验观测结果进行了比较, 符合得很好.

关键词:

Abstract

Based on the multiconfiguration Dirac-Fock method and impulse approximation, the electron capture and following radiation decay of the projectile ion are studied theoretically for Xe atom which is bombarded by Xe54+ ion at 197 MeV/u. The radiative electron capture (REC) cross-sections and the corresponding emitted photon energies have been calculated in detail. Meanwhile, the probabilities of the radiative decay and energies of the REC final states are also calculated; combined with the calculated results in this paper, the X-ray spectra structure of radiative decay from projectile ion is further simulated. It is found that the simulated spectra are in good agreement with the newly measured results at Lanzhou Heavy-Ion Accelerator Device.

Keywords:

作者及机构信息

1.
甘肃省原子分子物理与功能材料重点实验室, 西北师范大学物理与电子工程学院, 兰州 730070;

2.
中国科学院近代物理研究所, 兰州 730000

基金项目: 国家自然科学基金(批准号: 11274254, U1332206, U1331122)资助的课题.

Authors and contacts

1.
Key Laboratory of Atomic and Molecular Physics & Functional Materials of Gansu Province, College of Physics and Electronic Engineering, Northwest Normal University, Lanzhou 730070, China;

2.
Institute of Modern Physics, Chinese Academy of Science, Lanzhou 730000, China

Funds: Project supported by the National Natural Science Foundation of China (Grant Nos. 11274254, U1332206, U1331122).

参考文献

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[13]	Wan J J, Dong C Z, Ding X B, Ma X W, Rzadkiewicz J, Stöhlker T, Fritzsche S 2009 Phys. Rev. A 79 022707
[14]	Yu D Y, Xue Y L, Shao C J, Song Z Y, Lu R C, Ruan F F, Wang W, Chen J, Yang B, Yang Z H, Wan J J, Dong C Z, Cai X H 2011 Nucl. Instr. Meth. B 269 692
[15]	Fritzsche S 2002 Phys. Scripta T110 37
[16]	Brandt D 1983 Phys. Rev. A 27 1314
[17]	Dong C Z, Fu Y B 2006 Acta Phys. Sin. 55 108 (in Chinese) [董晨钟, 符彦飙 2006 物理学报 55 108]
[18]	Ichihara A, Shirai T, Eichler J 1994 Phys. Rev. A 49 1875
[19]	Lee J S 1977 J. Chem. Phys. 66 4906
[20]	Koga T, Mastsuyama H 1992 Phys. Rev. A 45 5266
[21]	Ma X W, Stöhlker T, Beyer H F, Bosch F, Brinzanescu O, Kozhuharov C, Mokler P H, Ludziejewski T, Stachura Z, Warczak A 2002 Nucl. Phys. Rev. 19 131
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[23]	Grant I P 1974 J. Phys. B 7 1458
[24]	Dyall K G, Grant I P, Johnson C T, Parpia F A, Plummer E P1989 Comp. Phys. Commun. 55 425
[25]	Jönsson P, He X, Fischer C F 2007 Comput. Phys. Commun. 177 597
[26]	Biggs F, Mendelsohn L B, Mann J B 1975 At. Data And Nucl. Data Tables 16 201
[27]	Tolstikhina I Y, Shevelko V P 2013 Phys. Usp. 56(3) 213
[28]	Wang Y J, Wan J J, Ding X B, Dong C Z, Ma X W, Wang J G, Wu Y 2009 Acta Phys. Sin. 58 2358 (in Chinese) [王永军, 万建杰, 丁晓彬, 董晨钟, 马新文, 王建国, 吴勇 2009 58 2358]

施引文献

[1]	Kozio K 2014 J. Quant. Spectrosc. Radiat. 149 138
[2]	Eichler J 1990 Phys. Rep. 193 165
[3]	Vane C R, Datz S, Dittner P F, Giese J, Jones N L, Krause H F, Rosseel T M, Peterson R S 1994 Phys. Rev. A 49 1847
[4]	Raisbeck G, Yiou F 1971 Phys. Rev. A 4 1858
[5]	Schnopper H W, Betz Hans D, Delvaille J P, Kalata K, Sohval A R, Jones K W, Wegner H E 1972 Phys. Rev. Lett. 29 898
[6]	Surzhykov A, Jentschura U D, Stöhlker T, Fritzsche S 2006 Phys. Rev. A 73 032716
[7]	Fritzsche S, Surzhykov A, Stöhlker T 2005 Phys. Rev. A 72 012704
[8]	Ma X, Stöhlker T, Bosch F, Brinzanescu O, Fritzsche S, Kozhuharov C, Ludziejewski T, Mokler P H, Stachura Z, Warczak A 2001 Phys. Rev. A 64 012704
[9]	Eichler J, Stöhlker T 2007 Phys. Rep. 439 1
[10]	Anholt R, Andriamonje S A, Morenzoni E, Stoller C, Monlitoris J D, Meyerhof W E, Bowman H, Xu J S, Xu Z Z, Rasmussen J O, Hoffmann D H H 1984 Phys. Rev. Lett. 53 234
[11]	Stöhlker T, Kozhuharov C, Mokler P H, Warczak A, Bosch F, Geissel H, Moshammer R, Scheidenberger C, Eichler J, Ichihara A, Shirai T, Stachura Z, Rymuza P 1995 Phys. Rev. A 51 2098
[12]	Rzadkiewicz J, Stöhlker T, Bana D, Beyer H F, Bosch F, Brandau C, Dong C Z, Fritzsche S, Gojska A, Gumberidze A, Hagmann S, Ionescu D C, Kozhuharov C, Nandi T, Reuschl R, Sierpowski D, Spillmann U, Surzhykov A, Tashenov S, Trassinelli M, Trotsenko S 2006 Phys. Rev. A 74 012511
[13]	Wan J J, Dong C Z, Ding X B, Ma X W, Rzadkiewicz J, Stöhlker T, Fritzsche S 2009 Phys. Rev. A 79 022707
[14]	Yu D Y, Xue Y L, Shao C J, Song Z Y, Lu R C, Ruan F F, Wang W, Chen J, Yang B, Yang Z H, Wan J J, Dong C Z, Cai X H 2011 Nucl. Instr. Meth. B 269 692
[15]	Fritzsche S 2002 Phys. Scripta T110 37
[16]	Brandt D 1983 Phys. Rev. A 27 1314
[17]	Dong C Z, Fu Y B 2006 Acta Phys. Sin. 55 108 (in Chinese) [董晨钟, 符彦飙 2006 物理学报 55 108]
[18]	Ichihara A, Shirai T, Eichler J 1994 Phys. Rev. A 49 1875
[19]	Lee J S 1977 J. Chem. Phys. 66 4906
[20]	Koga T, Mastsuyama H 1992 Phys. Rev. A 45 5266
[21]	Ma X W, Stöhlker T, Beyer H F, Bosch F, Brinzanescu O, Kozhuharov C, Mokler P H, Ludziejewski T, Stachura Z, Warczak A 2002 Nucl. Phys. Rev. 19 131
[22]	Sang C C, Wan J J, Dong C Z, Ding X B, Jiang J 2008 Acta Phys. Sin. 57 2152 (in Chinese) [桑萃萃, 万建杰, 董晨钟, 丁晓彬, 蒋军 2008 57 2152]
[23]	Grant I P 1974 J. Phys. B 7 1458
[24]	Dyall K G, Grant I P, Johnson C T, Parpia F A, Plummer E P1989 Comp. Phys. Commun. 55 425
[25]	Jönsson P, He X, Fischer C F 2007 Comput. Phys. Commun. 177 597
[26]	Biggs F, Mendelsohn L B, Mann J B 1975 At. Data And Nucl. Data Tables 16 201
[27]	Tolstikhina I Y, Shevelko V P 2013 Phys. Usp. 56(3) 213
[28]	Wang Y J, Wan J J, Ding X B, Dong C Z, Ma X W, Wang J G, Wu Y 2009 Acta Phys. Sin. 58 2358 (in Chinese) [王永军, 万建杰, 丁晓彬, 董晨钟, 马新文, 王建国, 吴勇 2009 58 2358]

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