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Nuclear Reactor Digitization Project

Raymond L. Murray Reactor Project Notebook

It has been suggested that changes in the volume of the reactor core
from the original proposal be made to

Consideration should be given to the following facts, however:

in the region around N

H/NU= 400. An estimate of the variation from
the minimum, M

o, from bare-reactor theory

The conclusion is that if the critical mass of the
is actually higher than the expected 915 grams, the excess material may still be

easily

H/NU be used.
On the other hand, if the mass turns out to be lower, the mixture can be diluted

Calculations leading to the formulas appear in the Appendix.

Assumptions:

Analysis:

U = 640 barns , σH = 0.31 barns.U, using the approximation that