Implementation of Energy-Dependent Q Values for Fission

Beck, Bret; Brown, David; Daffin, F.; Hedstrom, J; Vogt, R.

doi:10.2172/924599

Cited by 1 publication

(1 citation statement)

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“…The argument correlation is set to 0 (default) for no correlation between neutrons and photons. 1 if the total fission neutron energy and total fission photon energy are sampled from normal distributions with means given in Beck et al [37]. There is no correlation between the number of neutrons and the number of photons.…”

Section: A1 C++ Apimentioning

confidence: 99%

Fission Reaction Event Yield Algorithm, FREYA — For event-by-event simulation of fission

Verbeke

Randrup

Vogt

2015

Computer Physics Communications

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From nuclear materials accountability to detection of special nuclear material, SNM, the need for better modeling of fission has grown over the past decades. Current radiation transport codes compute average quantities with great accuracy and performance, but performance and averaging come at the price of limited interaction-by-interaction modeling. For fission applications, these codes often lack the capability of modeling interactions exactly: energy is not conserved, energies of emitted particles are uncorrelated, prompt fission neutron and photon multiplicities are uncorrelated. Many modern applications require more exclusive quantities than averages, such as the fluctuations in certain observables (e.g. the neutron multiplicity) and correlations between neutrons and photons. The new computational model, FREYA (Fission Reaction Event Yield Algorithm), aims to meet this need by modeling complete fission events. Thus it automatically includes fluctuations as well as correlations resulting from conservation of energy and momentum. FREYA has been integrated into the LLNL Fission Library, and will soon be part of MCNPX2.7.0, MCNP6, TRIPOLI-4.9, and Geant4.10.

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Section: A1 C++ Apimentioning

confidence: 99%