New Approach for Measuring the (n,γ) Cross Section of a Nucleus by a Few keV Neutron

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Author(s)

Abstract

We have for the first time determined with high precision the energy spectrum of low-energy neutrons (E_n<10keV) which are produced in the ^7Li(p,n)^7Be reaction, by detecting γ-rays of the ^<197>Au(n,γ)^<198>Au reaction whose cross section is known. An anti-Compton NaI(Tl) spectrometer played an essential role in detecting the γ-rays with a good signal to noise ratio by discriminating large background due to thermalized neutrons in the measurement room. The low energy neutrons thus derived were successfully used to measure the ^<62>Ni(n,γ)^<63>Ni reaction cross section. The present low energy neutrons could be extensively used for cross section measurements for neutron capture reactions and elastic scatterings from nuclei of nuclear astrophysical interests.

Journal

  • Journal of the Physical Society of Japan

    Journal of the Physical Society of Japan 74(11), 2981-2986, 2005-11-15

    The Physical Society of Japan (JPS)

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Codes

  • NII Article ID (NAID)
    110002325534
  • NII NACSIS-CAT ID (NCID)
    AA00704814
  • Text Lang
    ENG
  • Article Type
    ART
  • ISSN
    00319015
  • NDL Article ID
    7699612
  • NDL Source Classification
    ZM35(科学技術--物理学)
  • NDL Call No.
    Z53-A404
  • Data Source
    CJP  NDL  NII-ELS 
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