An Am/Be neutron source and its use in integral tests of differential neutron reaction cross-section data

作者：Uddin M S; Zaman M R; Hossain S M; Spahn I; Sudar S; Qaim S M^*

来源：Applied Radiation and Isotopes, 2010, 68(9): 1656-1661.

DOI：10.1016/j.apradiso.2010.02.006

• Am/Be neutron source
• Neutron flux mapping
• Neutron spectral shape validation
• Activation product
• gamma-ray spectrometry
• Spectrum averaged cross section
• Neutron threshold reaction
• Excitation function
• Integral test of differential data

An Am/Be neutron source, installed recently at the Rajshahi University, is described. Neutron flux mapping was done using the nuclear reactions Au-197(n,gamma)Au-198, In-113, 115In(n,n'gamma)In-115m and Ni-58(n,p)Co-58. An approximate validation of the neutron spectral shape was done using five neutron threshold detectors and the iterative unfolding code SULSA. Integral cross sections of the reactions Fe-54(n,p)Mn-54, Co-59(n,p)Fe-59 and Mo-92(n,p)Nb-92m were measured with fast neutrons (E-n > 1.5 MeV) and compared with data calculated using the neutron spectral distribution and the excitation function of each reaction given in data libraries: an agreement within +/- 6% was found.

• 出版日期2010-9