Nuclear Energy pp 513-519 | Cite as

On the Boundary Condition Between Two Multiplying Media

  • F. L. Friedman
  • E. P. Wigner
Part of the The Collected Works of Eugene Paul Wigner book series (WIGNER, volume A / 5)


The transition region between two parts of a pile which have different compositions is investigated. In the case where the moderator is the same in both parts of the pile, it is found, that the diffusion constant times fast neutron density satisfies the usual pile equations everywhere, right to the boundary. More complicated formulae apply in a more general case.


Thermal Neutron Fast Neutron Fission Neutron Neutron Density Transient Solution 
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Copyright information

© Springer-Verlag Berlin Heidelberg 1992

Authors and Affiliations

  • F. L. Friedman
  • E. P. Wigner

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