Since it wasn't talking about cost, it makes no assumption that anything is "free". As for perfection, I was assuming the reader could multiply 400 by whatever number < 1 was the actual efficiency.
Unstated was whether the difficulty of running breeder reactors makes this unworkable. It very well might, in practice.
I will note that the demonstrated U collection techniques (like polyamidoxime adsorbers) seem quite cheap enough for fueling breeder reactors.
Unstated was whether the difficulty of running breeder reactors makes this unworkable. It very well might, in practice.
I will note that the demonstrated U collection techniques (like polyamidoxime adsorbers) seem quite cheap enough for fueling breeder reactors.