Effect of (n, 2n) and (n, α) Reactions on Age Calculations for Beryllium

Fast Fuel Test Reactor-FFTR Conceptual Design Study

“…The beryllium cross sections were based on the work of Ref. (10) with the elastic removal cross section for Group 1 adjusted to give the correct age when used in a calculation by multigroup diffusion theory. The intermediate energy cross sections in this set were not prepared with consideration of the special characteristics of FFTR and, thus, did not take into account self-shielding corrections or correction to elastic removal cross sections caused by deviation of the reactor neutron spectrum from l/E.…”