Electron-Capture Decay Rate of ^7Be Encapsulated in C_<60> Cages

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著者

    • OHTSUKI T.
    • Laboratory of Nuclear Science, Tohoku University
    • HIROSE K.
    • Laboratory of Nuclear Science, Tohoku University
    • OHNO K.
    • Department of Physics, Yokohama National University

抄録

The decay rate of <SUP>7</SUP>Be electron capture (EC) was measured in C<SUB>60</SUB> and Be metal with a reference method. The halflives of <SUP>7</SUP>Be endohedral C<SUB>60</SUB> (<SUP>7</SUP>Be@C<SUB>60</SUB>) and <SUP>7</SUP>Be in Be metal (Be metal (<SUP>7</SUP>Be) ) were found to be 52.65±0.04 and 53.25±0.04 days, respectively. This amounts to a 1.13% difference in the EC-decay half-life between <SUP>7</SUP>Be@C<SUB>60</SUB> and Be meta (<SUP>7</SUP>Be). The result is a reflection of the different electron wave-functions for <SUP>7</SUP>Be inside C<SUB>60</SUB> compared to when <SUP>7</SUP>Be is in a Be metal. Here, the magnitude of the average charge-transfer from the L (2s) electrons of the <SUP>7</SUP>Be atom plays an important role in such variation in the decay constant in the environments.

収録刊行物

  • Journal of Nuclear and Radiochemical Sciences  

    Journal of Nuclear and Radiochemical Sciences 8(1), A1-A7, 2007-06-01 

    The Japan Society of Nuclear and Radiochemical Sciences

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各種コード

  • NII論文ID(NAID)
    10021101513
  • NII書誌ID(NCID)
    AA11948402
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    13454749
  • データ提供元
    CJP書誌  J-STAGE 
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