Development of a Vacuum Collimator for a Silicon Drift Detector and Its Application to Light Element Analysis Under Atmospheric Condition

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  • MAKINO Taiki
    Department of Applied Chemistry, Hiroshima University Research & Utilization Division, Japan Synchrotron Radiation Research Institute, SPring-8
  • YOSHIOKA Tsuyoshi
    Research & Utilization Division, Japan Synchrotron Radiation Research Institute, SPring-8
  • MOMOSAKI Kenjiro
    Department of Applied Chemistry, Hiroshima University Research & Utilization Division, Japan Synchrotron Radiation Research Institute, SPring-8
  • TSUJI Emiko
    Department of Applied Chemistry, Hiroshima University Research & Utilization Division, Japan Synchrotron Radiation Research Institute, SPring-8
  • NOGUCHI Naoki
    Department of Applied Chemistry, Hiroshima University Research & Utilization Division, Japan Synchrotron Radiation Research Institute, SPring-8
  • NISHIWAKI Yoshinori
    Faculty of Education, Kochi University Research & Utilization Division, Japan Synchrotron Radiation Research Institute, SPring-8
  • HASHIMOTO Takashi
    Research & Utilization Division, Japan Synchrotron Radiation Research Institute, SPring-8
  • HONDA Sadao
    Research & Utilization Division, Japan Synchrotron Radiation Research Institute, SPring-8
  • NINOMIYA Toshio
    Research & Utilization Division, Japan Synchrotron Radiation Research Institute, SPring-8
  • FUJIWARA Akihiko
    Research & Utilization Division, Japan Synchrotron Radiation Research Institute, SPring-8
  • TAKATA Masaki
    Research & Utilization Division, Japan Synchrotron Radiation Research Institute, SPring-8
  • HAYAKAWA Shinjiro
    Department of Applied Chemistry, Hiroshima University Research & Utilization Division, Japan Synchrotron Radiation Research Institute, SPring-8

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Other Title
  • SDD用真空コリメーターの開発と大気中での軽元素蛍光X線分析
  • SDDヨウ シンクウ コリメーター ノ カイハツ ト タイキ チュウ デ ノ ケイゲンソ ケイコウ Xセン ブンセキ

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Abstract

<p>A special collimator was designed and developed to improve sensitivity for light elements in X-ray fluorescence analysis under atmospheric condition. The air path between the sample and the detector could be greatly reduced by evacuating interior volume of the collimator, and the observed gain of Al Kα line was 76 with the use of the vacuum collimator. The expected gain of Mg Kα was approximately 1000, and the clear Mg peak was observed under atmospheric condition. Trace impurities of Mg and MgO were investigated by using 8 keV X-rays from SPring-8, and the weight fraction of Fe was derived from the comparison between the observed and calculated intensity ratio of Mg and Fe.</p>

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