RADIATION INDUCED PROPERTIES: RISiC@
To avoid sophisticated techniques for generating the protection layer, we developed a rather brutal method which, however, gives some additional positive effects.
The free space between waste and SSiC barrier is filled with a potting material.
A special cast composite is under development which gains its desired properties under the influence of radiation and heat emitted by the waste.
The material composition contains additional boron.
The capture of slow neutrons in BORON–10 near the fuel rods generates a high LET radiation (high-energy alpha particles and Lithium-7 nuclei).
This radiation provides the necessary activation energy to transform the mixture of raw materials in a product with locally ceramic-like properties.
We call it: RADIATION INDUCED SILICON CARBIDE: RISiC@(trade mark)
Beta and Gamma radiation with lower linear energy transfer, but longer range, transform the potting material in glassy-carbon like regions, also at the inner surface of the SSiC barrier.