
Accession Number : AD0832498
Title : AN ANALYTICAL SOLUTION OF THE BOLTZMANN EQUATION FOR NEUTRON SLOWINGDOWN LENGTH.
Descriptive Note : Technical rept.,
Corporate Author : AIR FORCE INST OF TECH WRIGHTPATTERSON AFB OH SCHOOL OF ENGINEERING
Personal Author(s) : Bridgman, Charles J.
Report Date : DEC 1962
Pagination or Media Count : 29
Abstract : An analytical method of solution for the second spatial moment (neutron slowingdown length) is developed and evaluated. This solution is similar in principle to the solution obtained first by Fermi and later by Marshak for the slowingdown length of neutrons in a mixture of hydrogen plus an infinitely heavy element, except that the solution presented here is applicable to any mixture of real elements in general including or excluding hydrogen with no limit on the number of elements considered. The solution is restricted to the P1 approximation of transport theory which admits only elastic, scatter which is isotropic in the center of mass system. (Author)
Descriptors : (*NEUTRON TRANSPORT THEORY, REACTOR KINETICS), NEUTRON CROSS SECTIONS, NEUTRON SCATTERING, ELASTIC SCATTERING, APPROXIMATION(MATHEMATICS), INTEGRAL EQUATIONS, BERYLLIUM OXIDES, ITERATIONS, THEOREMS, THESES.
Subject Categories : Fission Reactor Physics
Distribution Statement : APPROVED FOR PUBLIC RELEASE