Neutron-neutron and neutron-photon correlations with FREYA
1 Lawrence Livermore National Laboratory, Livermore, CA 94551, USA
2 Physics Department, University of California at Davis, Davis, CA 95616, USA
3 Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
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Published online: 13 September 2017
For many years, the state of the art for modeling fission in radiation transport codes has involved sampling from average distributions. However, in a true fission event, the energies, momenta and multiplicities of emitted particles are correlated. The FREYA (Fission Reaction Event Yield Algorithm) code generates complete fission events. Event-by-event techniques such as those of FREYA are particularly useful because it is possible to obtain complete kinematic information on the prompt neutrons and photons emitted during the fission process. It is therefore possible to extract any desired correlation observables. We describe FREYA and compare our results with neutron-neutron, neutron-light fragment and neutron-photon correlation data.
© The Authors, published by EDP Sciences, 2017
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