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Improved energy resolution of a cyclotron beam for RBS measurements

机译:提高RBS测量回旋加速器束的能量分辨率

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摘要

For RBS (Rutherford Back Scattering) analysis, the quality of the beam is of premium importance because the depth profile resolution of the method is strongly dependent on the energy resolution of the probing beam. A magnetic analyzer, consisting of two 90 left-right bending magnets forming an achromatic doublet has been adapted to the Liege 20 MeV (proton) AVF (Azimuthal Varying Field) cyclotron. The energy resolution of that system has been measured by recording the resonance width of a 32S(p,p'y)32S (3.38 MeV. p+ lab. energy). We have obtained a value of AE= ± 2 keV, reducing by a factor of 20 the natural dispersion of our cyclotron. We describe our magnetic analyzer system and present the results of our RBS measurements at energies up to 14 MeV a.
机译:对于RBS(卢瑟福反向散射)分析,光束质量至关重要,因为该方法的深度剖面分辨率很大程度上取决于探测光束的能量分辨率。磁分析仪已经由Liege 20 MeV(质子)AVF(方位变变场)回旋加速器改装而成,该磁分析仪由两个形成左右消色差双峰的90个左右弯曲磁体组成。该系统的能量分辨率是通过记录32S(p,p'y)32S(3.38 MeV。p +实验室能量)的共振宽度来测量的。我们获得了AE =±2 keV的值,将回旋加速器的自然色散减小了20倍。我们描述了我们的磁分析仪系统,并介绍了在能量高达14 MeV a时的RBS测量结果。

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  • 来源
    《Nuclear Instruments & Methods in Physics Research》 |2008年第10期|p.2110-2112|共3页
  • 作者单位

    Institut de Physique Nucleaire, Atomique et Spectroscopie, Centre Europeen d'Archeometrie, Universite de Liege, Sart Tilman B15, B-4000 Liege, Belgium;

    Institut de Physique Nucleaire, Atomique et Spectroscopie, Centre Europeen d'Archeometrie, Universite de Liege, Sart Tilman B15, B-4000 Liege, Belgium;

    Institut de Physique Nucleaire, Atomique et Spectroscopie, Centre Europeen d'Archeometrie, Universite de Liege, Sart Tilman B15, B-4000 Liege, Belgium;

    Institut de Physique Nucleaire, Atomique et Spectroscopie, Centre Europeen d'Archeometrie, Universite de Liege, Sart Tilman B15, B-4000 Liege, Belgium;

    Institut de Physique Nucleaire, Atomique et Spectroscopie, Centre Europeen d'Archeometrie, Universite de Liege, Sart Tilman B15, B-4000 Liege, Belgium;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    RBS; alpha; cyclotron; elastic scattering;

    机译:苏格兰皇家银行;α;回旋加速器弹性散射;

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