Nuclear Science and Engineering / Volume 85 / Number 1 / September 1983 / Pages 55-61
Technical Note / dx.doi.org/10.13182/NSE83-A17152
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The neutron flux Φ(r,) at position r in the direction of unit vector
is expanded as a series of the form
with
, the associated Legendre polynomial of order l,m. Variables θ and
are the angles defining
and N, an arbitrary odd number. Equations obtained for
have solutions involving linear combinations of Bessel functions of the first and second kind. Expressions for the fluxes from point, line, and plane sources are found using a Green's function technique.