mit-crpg/openmc — pull request #312 by bhermanmit (2014-09-05 19:05:22+00:00)
Title: Added capability to filter box source by fissionable material

This PR allows the user to perform automatic rejection sampling on a box source to ensure that all particles start in a fissionable material region. The user specifies "fission" instead of "box" under the space part of the initial source designation. This takes care of issue #245.