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    Volume 3, Issue 4 (April 2006)

    The Neutron Spectrum of NBS-1

    (Received 20 June 2005; accepted 25 October 2005)

    Published Online: 00 January 2006


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    A proposed set of photonuclear cross sections was used to calculate the neutron spectrum of a RaBe photoneutron source. The calculation used the gamma rays from 226Ra in equilibrium as a driver, transported the gamma rays through the materials of the source, calculated neutron production, and subsequent neutron scattering. The calculation produced 27 % more neutrons than measured, and predicted relatively more low-energy neutrons.

    Author Information:

    Heimbach, CR
    Physicist, National Institute of Standards and Technology, Gaithersburg, MD

    Stock #: JAI13474


    DOI: 10.1520/JAI13474

    Title The Neutron Spectrum of NBS-1
    Symposium ,
    Committee E10