A Systematic Calculation of Nuclear Yields at the Production of Transuranium Elements by Multi-step Neutron Irradiation in a Reactor

A general procedure, which is amenable to computer programming, is developed for the evaluation of nuclear yields at the production of transuranium elements by multi-step neutron irradiation in a reactor. Chain members in nuclear transformation chains are progressively chosen, and chain member yields are systematically calculated. All reaction chains that start from nuclides produced at the preceded step are traced, and nuclear yields are obtained by the separate summation of chain member yields ; they are then used as initial nuclear yields at the next step. When these treatments are continued till the last step, final nuclear yields are obtained. The yields of fission product nuclides can be also evaluated by the developed procedure without any modification