On the Tritium Breeding Capability of Flibe, Flinabe, and Li_(20)Sn_(80) in a Fusion-Fission (Hybrid) Reactor

摘要

In a commercial (DT) driven fusion reactor, the tritium breeding ratio per incident fusion neutron must be greater than 1.05 to maintain tritium self-sufficiency for the driver. In this study tritium breeding capability of three different coolants, namely Flibe (LiF·BeF_2), Flinabe (LiF·NaF·BeF_2), and Li_(20)Sn_(80) in a (DT) driven fusion-fission (hybrid) reactor was investigated for different refractory alloys (W-5Re, TZM, T111, and Nb-1Zr) as structural material. Neutron transport calculations were conducted with the help of SCALE 4.3 SYSTEM by solving the Boltzmann transport equation with code XSDRNPM. The contribution of Flibe, Flinabe, and Li_(20)Sn_(80) with respect to ~6Li enrichment in their lithium content to overall TBR was investigated. In addition, the effect of structural material type on TBR was examined.