Assessment of Commercial Sealed 22Na Positron Sources for Positron Annihilation Lifetime Measurements

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  • ITO Kenji
    National Institute of Advanced Industrial Science and Technology (AIST)
  • KOBAYASHI Yoshinori
    National Institute of Advanced Industrial Science and Technology (AIST)

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  • 市販｀２２´Ｎａ密封線源の陽電子消滅寿命測定への適用性評価
  • シハン 22Na ミップウセン ゲン ノ ヨウデンシ ショウメツ ジュミョウ ソクテイ エ ノ テキヨウセイ ヒョウカ

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Abstract

We assessed usefulness of commercially available sealed 22Na positron sources for positron annihilation lifetime measurements. Three sources with different nominal activities below 1.85 MBq were adopted for measuring positron annihilation lifetimes in silicon and annealed copper. It was found that all the sources have long lifetime components over 1 ns with different relative intensities of several percents. The result suggests that care should be taken in the analysis of the positron annihilation lifetime data obtained with these sources.

Journal

  • RADIOISOTOPES

    RADIOISOTOPES 55 (8), 469-472, 2006

    Japan Radioisotope Association

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