A good idea below from Robin. Might also be possible to use LiOH
solution with Li at 0.175 g/cm^3 in hot solution. Maybe the O18
generated would also find a use. 8^)
Horace Heffner
On Mar 11, 2006, at 6:32 PM, Robin van Spaandonk wrote:
... expensive
blanket/shielding can be replaced by a cheap 4 layer
shield/blanket.
1) Inner layer - thin vacuum wall.
2) Thick layer of (cheap;heavy?) water, acts as neutron moderator,
and removes heat.
3) Thin metal layer that chemically separates water layer from the
Lithium layer.
4) Thin (and hence cheaper) Lithium layer that absorbs neutrons,
slowed by the water layer, and produces Tritium. This layer
can now afford to be much thinner , because the neutrons have
already been slowed in the moderator (water) layer.
