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DOE OSTI · 1377786

Fission Reaction Event Yield Algorithm FREYA 2.0.2

Verbeke, J. M.·Randrup, J.·Vogt, R.
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Abstract

The purpose of this paper is to present the main differences between FREYA versions 1.0 and 2.0.2. FREYA (Fission Reaction Event Yield Algorithm) is a fission event generator which models complete fission events. As such, it automatically includes fluctuations as well as correlations between observables, resulting from conservation of energy and momentum. The main differences between the two versions are: additional fissionable isotopes, angular momentum conservation, Giant Dipole Resonance form factor for the statistical emission of photons, improved treatment of fission photon emission using RIPL database, and dependence on the incident neutron direction. FREYA 2.0.2 has been integrated into the LLNL Fission Library 2.0.2, which has itself been integrated into MCNP6.2, TRIPOLI-4.10, and can be called from Geant4.10.

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46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY73 NUCLEAR PHYSICS AND RADIATION PHYSICS97 MATHEMATICS AND COMPUTING

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Verbeke, J. M., Randrup, J., Vogt, R.. 2017-09-01. Fission Reaction Event Yield Algorithm FREYA 2.0.2. https://doi.org/10.1016/j.cpc.2017.09.006

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