Kennedy, G.; St-Pierre, J.; Wang, K.; Zhang, Y.; Preston, John; Grant, Charles N.; Vutchkov, Mitko K.
Author Affiliation, Ana.
International Centre for Environment and Nuclear Sciences
Activation constants for slowpoke and MNS reactors calculated from the neutron spectrum and ko and Qo values
Journal of Radioanalytical and Nuclear Chemistry
Date of Publication
The relative thermal, epithermal and fast neutron fluxes were measured in the inner and outer irradiation sites of three SLOWPOKE reactors and one Miniature Neutron Source reactor by the bare triple monitor method. Using the measured neutron spectrum parameters and a compilation of published Ko and Qo values, activation constants were calculated for the most intense gamma-rays of all nuclides commonly used in NAA. The resulting table of constants can be used to standardize NAA measurements for all elements when combined with relative efficiency measurements and the measurement of the thermal neutron flux with one standard. The observed constancy of the neutron spectra suggests that these activation constants are valid for all SLOWPOKE and MNS reactors.....