The effect of the α-particle from the D(T,n)a reaction on a 3 mm solid deuteriur. pellet was studied by disregarding the optimum of the refuelling process and limiting attention to the feasibility of pellet refuelling alone. A comparison of the
refuelling period required with the slowing-down time of the α-particle in a D+,e plasma corresponding to a 2.5 GW(e) reactor showed that the pellet is first subjected to the direct impact of a-particles of around 2-3 MeV energy. The penetration depth of these particles in the pellet is comparable to that of a 20 keV electron. If the temperature of the ablated cloud created around the pellet is about 1 eV, a cloud radius of about 20 cm is required for the subsequent thermalization of the α-particles.
|Place of Publication||Roskilde, Denmark|
|Publisher||Risø National Laboratory|
|Number of pages||19|
|Publication status||Published - 1978|
|Series||Denmark. Forskningscenter Risoe. Risoe-R|
- Risø report 378