Evaluation of core compositions for use in breed and burn reactors and limited-separations fuel cycles

► Calculated minimum burnup and irradiation damage for B&B reactor compositions. ► Computed doubling time of fuel cycles using B&B reactors and no chemical separations. ► Determined sensitivity of doubling time to using melt refining vs. direct reuse. ► Examined tradeoff between power density and neutronics for different coolants.