期刊文献+
任意字段
题名或关键词
题名
关键词
文摘
作者
第一作者
机构
刊名
分类号
参考文献
作者简介
基金资助
栏目信息

碳离子碰撞引起的金L壳层X射线产生截面的实验研究 被引量：1

Measurement of L-subshell X-ray production cross section of gold by carbon-ion bombardent
下载PDF
导出
摘要 实验测量了20～50 MeV的C离子和Au原子碰撞中Au产生的L壳层X射线,研究了Au的L各支壳层产生截面σ(L_l)、(L_α)、(L_β)、(L_γ)和总截面的比值σ(L_(total)与入射离子能量的关系.利用L壳层的辐射跃迁几率,Croster～Kroning跃迁率和L亚壳层的荧光产额将平面波波恩近似(PWBA)和ECSSR理论计算的电离截面转换为L层X射线产生截面,并与实验结果相比较,结果表明σ(L_l)、(L_α)、(L_γ)和总截面σ(L_(total))实验测量值随入射离子的变化趋与ECPSSR和PWBA所预测的结果一致,ECSSR理论值更接近我们的实测测量值,但是数值大于实验测量结果. Production cross-section of Au L-shell X：ray induced by 20~50 Mev Cs＋ ion was measured in this work. The relationship of X-ray production cross-section and impact ion energy was represented. At the same time, inner-shell ionization cross-section given by plane-wave Born approximation （PWBA） theory and the ECPSSR theory was transformed to L-subshell X-ray production cross-section by using radiative transition probability, Coster-Kroning transition probability and fluorescence yield. The results were compared with the experimental results. It was found that reasonable agreement between theory and experiment is observed, the ECPSSR theory is closer to the experiment, while, the value is larger than the experimental results.
作者 吕牛 常宏伟 杨治虎 张艳萍 杨浩智 杜树斌
机构地区 中国原子能研究院 兰州大学 中国科学院近代物理研究所
出处 《原子与分子物理学报》 CAS CSCD 北大核心 2010年第3期463-468,共6页 Journal of Atomic and Molecular Physics
关键词 内壳层 截面 X射线 L-shell X-ray, cross section, plane-wave Born approximation, ECPSSR theory
分类号 O65 [理学—分析化学]
  • 相关文献

参考文献17

  • 1Paul H,Sacher J.Fitled mpirical reference cross sections for K-shell ioniation by proton[J].At.Data Nucl.Data Tables,1989,42:105.
  • 2Sokhi R S,Crumpton D.Experimental L-shell X-ray production and ionzation cross sections for proton impact[J].At.Data Nucl.Data Tables,1984,30:49.
  • 3Orlic I,Sow C H,Tang S M.Experimental L-shell X-ray production and ionzation cross sections for proton impact[J].At.Data Nucl.Data Tables,1994,56;159.
  • 4Btown MD,Simons D G,Land DJ,et al.K-shell ionization cross section for Ti,Cr,Co,Ni,Cu and Zn targets induced by portons in the energy range 300 ～2400 KeV[J].Phys.Rev.A,1982,25:2935.
  • 5Luo zM,An Z,He F Q,et al.Correction of the influence of the substrate upon the measurement of Kshell ionization cross section[J].J.Phys.B,1996,29:4001.
  • 6An Z,Li T H,Wang L M,et al.Correction of substrate effect in measurement of 8～25 keV electronImpact K-Shell ionization cross section of Cu and Co ehments[J].Phys.Rev.A,1996,54:3067.
  • 7Peng X F,He F Q,Long,X G,et al.Cross sections for K-Shell ionization of niobium by electron Impact[J].Phys.Rev.A,1998,58:2034.
  • 8Luo Z M,Tang C H,An Z,et al.Selenium and yttrium K-Shell ionization cross sections by electron impact[J].Phys.Rev.A,2001,63:4702.
  • 9He F Q,Peng X F,Long X G,et al.K-shell ionization cross sections by electron bombardment at low energies[J].Nucl.In2 str.Meth.B,1997,129:445.
  • 10Tang C H,An Z,Li T H,et al.Measurement of zinc and manganese K-Shell ionization cross sections by electron impact[J].Nucl.Instr.Meth.B,1999,155:1.

同被引文献17

  • 1Wu Y, An Z, Duan Y M, etal. Measurements of K- shell ionization cross-sections of S,Ca and Zn by 7-30 keV electron impact [J]. Nuclear Instruments and Methods in Physics Research B, 2010, 268:2820.
  • 2Zhu J J, An Z, Liu M T, etal. Measurements of the K-shell ionization cross sections of Si by 3-25 keV e- lectron impact using the thick-target method [J]. Phys. Rev. A, 2009, 79:052710.
  • 3Talukder M R, Bose S, Takamura S. Calculated electron impact K-shell ionization cross sections for atoms[J]. International Journal of Mass Spectrome- try, 2008, 269 118.
  • 4Haque A K F, Uddin M A, Basak. Empirical model for the electron-impact K-shell-ionization cross sec- tions[J]. Phys. Rev. A, 2006, 73: 012708.
  • 5David Bote, Francesc Salvat. Calculations of inner- shell ionization by electron impact with the distorted- wave and plane-wave Born approximations[J]. Phys. Rev. A, 2008, 77:042701.
  • 6Haque A K F, Uddin M A, Basak. Electron-impact ionization of L-shell species [J]. Phys. Rev. A, 2006, 73:052703.
  • 7Merlet C, Llovet X, Fernandez-Varea J M. Absolute K-shell ionizaton cross sections and and X-ray pro- duction cross sections of Ga and As by 1.5-39 keV electrons[J]. Phys. Rev. A, 2006, 73:062719.
  • 8Campos C S, Vasconcellos M A Z, Llovet X, et al. Measurements of L-shell x-ray production cross sec- tions of W,Pt,and Au by 10-30 keV eleetrons[J]. Phys. Rev. A, 2002, 66:012719.
  • 9Nagashima Y, Shigeta W, Hyodo T, et al. In Proceedings of The XXIV international conference on photonic,electronic and atomic collisions, 2005, edited by P. D. Fainstein. et al. , (World Scientific, Singapore, 2006), pp. 399.
  • 10Schneider H,Tobehn I,Ebel I,et al. Absolute cross sections for inner shell ionization by lepton impact [J]. Phys. Rev. Lett., 1993, 71: 2707.

引证文献1

原子与分子物理学报
2010年 第3期

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部