1 1. In troduc tion 1 2. Breeding Blanket Design and Materials 2 3. Tritium Breeding Requirements 8 4. Breeding Potential of Candidate Materials 14 4.1 Effects of Penetrations on T 15 4.2 Breeding in the Inboard Blanket 18 4.3 Fast and Thermal Systems 19 4.4 Neutron Multipliers 24 4.5 Conclusions on Breeding Potential 30 5. Sensitivity to Data Uncertainties 32 6. Recommended Effort 40 7. Nuclea...