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符合多普勒展宽谱的源修正研究

苏本法 王柱 黄长虹 王少阶

苏本法, 王柱, 黄长虹, 王少阶. 符合多普勒展宽谱的源修正研究[J]. 原子核物理评论, 2005, 22(3): 267-271. doi: 10.11804/NuclPhysRev.22.03.267
引用本文: 苏本法, 王柱, 黄长虹, 王少阶. 符合多普勒展宽谱的源修正研究[J]. 原子核物理评论, 2005, 22(3): 267-271. doi: 10.11804/NuclPhysRev.22.03.267
Su BenFa, Wang Zhu, Huang ChangHong, Wang ShaoJie. Study on Source Correction of CDB Spectroscopy[J]. Nuclear Physics Review, 2005, 22(3): 267-271. doi: 10.11804/NuclPhysRev.22.03.267
Citation: Su BenFa, Wang Zhu, Huang ChangHong, Wang ShaoJie. Study on Source Correction of CDB Spectroscopy[J]. Nuclear Physics Review, 2005, 22(3): 267-271. doi: 10.11804/NuclPhysRev.22.03.267

符合多普勒展宽谱的源修正研究

doi: 10.11804/NuclPhysRev.22.03.267

Study on Source Correction of CDB Spectroscopy

  • 摘要: 测量了Ti,Ni,Cu,Al以及Si的符合多普勒展宽谱。对于Ni的多普勒展宽谱,采用最小二乘法拟合得出其中的源强度。给出了源修正前后湮没量子在Si中的多普勒展宽谱,讨论了源成分的影响。用高斯-抛物线模型拟合多普勒展宽谱,将多普勒展宽谱中自由电子的湮没贡献和束缚电子的湮没贡献分开,进而探讨了只对束缚电子的湮没贡献做源修正的方法。In the present work, Coincidence Doppler Broadening (CDB) measurements have been performed for five elements i.e. Ti, Ni, Cu, Al and Si. As to the CDB spectra of Ni, we obtained the annihilation fraction of positron-electron pairs in the source by least square fitting. After source correction, spectra for Si are also given to indicate the influence of source components. CDB spectra were simulated with Gauss-Parabola model to separate annihilation contribution of core electrons from outermost electrons. Furthermore, a new source correction method, i.e. source correction will be done only in the contribution of core electron, has been presented
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出版历程
  • 收稿日期:  1900-01-01
  • 修回日期:  1900-01-01
  • 刊出日期:  2005-09-20

符合多普勒展宽谱的源修正研究

doi: 10.11804/NuclPhysRev.22.03.267

摘要: 测量了Ti,Ni,Cu,Al以及Si的符合多普勒展宽谱。对于Ni的多普勒展宽谱,采用最小二乘法拟合得出其中的源强度。给出了源修正前后湮没量子在Si中的多普勒展宽谱,讨论了源成分的影响。用高斯-抛物线模型拟合多普勒展宽谱,将多普勒展宽谱中自由电子的湮没贡献和束缚电子的湮没贡献分开,进而探讨了只对束缚电子的湮没贡献做源修正的方法。In the present work, Coincidence Doppler Broadening (CDB) measurements have been performed for five elements i.e. Ti, Ni, Cu, Al and Si. As to the CDB spectra of Ni, we obtained the annihilation fraction of positron-electron pairs in the source by least square fitting. After source correction, spectra for Si are also given to indicate the influence of source components. CDB spectra were simulated with Gauss-Parabola model to separate annihilation contribution of core electrons from outermost electrons. Furthermore, a new source correction method, i.e. source correction will be done only in the contribution of core electron, has been presented

English Abstract

苏本法, 王柱, 黄长虹, 王少阶. 符合多普勒展宽谱的源修正研究[J]. 原子核物理评论, 2005, 22(3): 267-271. doi: 10.11804/NuclPhysRev.22.03.267
引用本文: 苏本法, 王柱, 黄长虹, 王少阶. 符合多普勒展宽谱的源修正研究[J]. 原子核物理评论, 2005, 22(3): 267-271. doi: 10.11804/NuclPhysRev.22.03.267
Su BenFa, Wang Zhu, Huang ChangHong, Wang ShaoJie. Study on Source Correction of CDB Spectroscopy[J]. Nuclear Physics Review, 2005, 22(3): 267-271. doi: 10.11804/NuclPhysRev.22.03.267
Citation: Su BenFa, Wang Zhu, Huang ChangHong, Wang ShaoJie. Study on Source Correction of CDB Spectroscopy[J]. Nuclear Physics Review, 2005, 22(3): 267-271. doi: 10.11804/NuclPhysRev.22.03.267

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