Technological Development for Half-life Measurement of ^<146>Sm Nuclide

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Techniques for the measurement of the <SUP>146</SUP>Sm nuclide, which is known as an extinct nuclide on the present Earth, were developed in order to determine its half-life. The nuclide was produced in three reactions of <SUP>147</SUP>Sm (γ, n) <SUP>146</SUP>Sm, <SUP>147</SUP>Sm (n, 2n) <SUP>146</SUP>Sm, and <SUP>147</SUP>Sm (p, 2n) <SUP>146</SUP>Eu (→<SUP>146</SUP>Sm). The Sm fraction in the target was chromatographically purified to prepare α counting samples as hydroxide. The <SUP>146</SUP>Sm/<SUP>147</SUP>Sm α-activity ratios in the samples were measured using a Si surface barrier detector. The <SUP>146</SUP>Sm<SUP>22+</SUP>/<SUP>152</SUP>Sm<SUP>23+</SUP> and <SUP>147</SUP>Sm<SUP>22+</SUP>/<SUP>152</SUP>Sm<SUP>23+</SUP> ratios were measured by accelerator mass spectrometry using the ECR-ATLAS-GFM system. The <SUP>146</SUP>Sm ions were distinguished clearly from the other ions such as the abundant isobar, <SUP>146</SUP>Nd in the samples.

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  • Journal of Nuclear and Radiochemical Sciences  

    Journal of Nuclear and Radiochemical Sciences 8(2), 109-112, 2007-12-01 

    The Japan Society of Nuclear and Radiochemical Sciences

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各種コード

  • NII論文ID(NAID)
    10021102049
  • NII書誌ID(NCID)
    AA11948402
  • 本文言語コード
    ENG
  • 資料種別
    REV
  • ISSN
    13454749
  • データ提供元
    CJP書誌  J-STAGE 
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