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Update documentation to reflect creation of secondary neutrons

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Paul Romano 2015-08-04 09:47:29 +12:00
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docs/source/methods/physics.rst
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@ -187,11 +187,11 @@ secondary photons from nuclear de-excitation are tracked in OpenMC.
------------------------
These types of reactions are just treated as inelastic scattering and as such
are subject to the same procedure as described in
:ref:`inelastic-scatter`. Rather than tracking multiple secondary neutrons, the
weight of the outgoing neutron is multiplied by the number of secondary
neutrons, e.g. for :math:`(n,2n)`, only one outgoing neutron is tracked but its
weight is doubled.
are subject to the same procedure as described in :ref:`inelastic-scatter`. For
reactions with integral multiplicity, e.g., :math:`(n,2n)`, an appropriate
number of secondary neutrons are created. For reactions that have a multiplicity
given as a function of the incoming neutron energy (which occasionally occurs
for MT=5), the weight of the outgoing neutron is multiplied by the multiplcity.
.. _fission: