Quote:
Originally Posted by tsofian
In this case there is no way that fusion packs will be workable. The amount of shielding needed to deal with fast neutrons is generally fairly heavy. There is also an issue with that material becoming activated by neutron absorption.
http://www.academia.edu/3311242/Calc...ding_Materials
http://pbadupws.nrc.gov/docs/ML1122/ML11229A721.pdf
https://www.osti.gov/opennet/servlet...7/16291147.pdf
The final document states "To reduce the
neutron flux from a generator producing 1O to the 10th
neutrons per second to acceptable levels for
limited operation, 12 feet of distance that
included 27 inches of water and 16 inches of
solid concrete block were used."
This is a fairly serious amount of mass. I am not certain what the neutron production rate of the fusion packs would be. Does someone haave an estimate of that available? |
1 watt should produce 10 to the 12th neutrons per second for D-D reaction. This is why I have proposed a few hidden underground D-D fusion reactors that capture the He3 from the reaction and use that as fuel for the portable reactors in my game. That does limit the amount of time the portable reactors can used to the rate of He3 production. But since He3 is produced from half of the reactions, it seems somewhat reasonable. He3-He3 produces no neutrons and it is just (relatively) easy to capture power from protons and the heat.