In the text I use for class, the examples and derivations for functions showing the neutron flux at some point, are all about sources within infinite mediums. Now I have a probelm where I must show that neutron flux, for a point source within a finite sphere, is found by the following equation.(adsbygoogle = window.adsbygoogle || []).push({});

[tex]

\phi (r)= \frac{S}{4 \pi D sinh \frac{R + d}{L}} \frac{sinh( \frac{R + d - r}{L} ) }{r}

[/tex]

If anyone can tell me where I could learn about flux in finite mediums, I would appreciate it.

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# Neutron flux in finite medium.

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