Neutron spectrum parameters in two irradiation channels of the Nigeria research reactor-1 (nirr-1) for use in k0-naa

  • U Sadiq
  • S Jonah
  • R Nasiru
  • Y Zakari
Keywords: Neutron spectrum parameters, k0-NAA, Cd-ratio for multi-monitor method, NIRR-1, Thermal to epithermal flux ratio, Epithermal flux shape factor.


For the utilization of the NIRR-1 to include the k0-standardization method, the following neutron spectrum parameters in one inner and one outer irradiation channels were determined using the “Cd-ratio for multi-monitor method”: The thermal to epithermal flux ratio, f, and the epithermal flux shape factor, α. These parameters determined in the inner irradiation channel A1,are: α = - 0.046 ± 0.005 and f = 18.4 ± 0.34 and for the outer irradiation channel A2 α = + 0.024 ± 0.002 and f = 49.5 ± 0.96. The results compare well with reported values obtained from other reactor facilities with similar core configuration such as the Slowpoke and Miniature Neutron Source Reactor facilities available in literature.

Journal Identifiers

eISSN: 2006-6996
print ISSN: 2006-6996