Effect of the Temperature of the Moderator on the Velocity Distribution of Neutrons with Numerical Calculations for H as Moderator

Eugene Paul Wigner · J. Ernest Wilkins (Jr.)

1949年1月 · U.S. Atomic Energy Commission, Technical Information Branch

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In this paper we set up an integral equation governing the energy distribution of neutrons that are being slowed down uniformly throughout the entire space by a uniformly distributed moderator whose atoms are in motion with a Maxwellian distribution of velocities. The effects of chemical binding and crystal reflection are ignored. When the moderator is hydrogen, the integral equation is reduced to a differential equation and solved by numerical methods. in this manner we obtain a refinement of the dv/v2 law.