Comparison of Nuclear Reactions in Nuclear Energy Systems and in the Universe

Abstract

A similarity was studied between the production/transmutation process of fission products in a fast reactor and that of the s-process nucleosynthesis in a star. A long-period burnup calculation of fission products was performed with the one-group approximation to obtain the fission products distribution in an equilibrium state. The obtained fission products distribution was compared with the s-process products distribution, and similar structures were found in both the products distributions.

Keywords:

• s-process nucleosynthesis
• fission products
• fast reactors
• neutron capture cross sections