Investigation of phenomenological models for the Monte Carlo simulation of the prompt fission neutron and {gamma} emission

Journal Article · Mon Nov 15 00:00:00 EST 2010 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.82.054616· OSTI ID:21499193

Litaize, O; Serot, O ^[1]

---

1. CEA Cadarache, F-13108 Saint Paul lez Durance (France)

A Monte Carlo simulation of the fission fragment deexcitation process was developed in order to analyze and predict postfission-related nuclear data which are of crucial importance for basic and applied nuclear physics. The basic ideas of such a simulation were already developed in the past. In the present work, a refined model is proposed in order to make a reliable description of the distributions related to fission fragments as well as to prompt neutron and {gamma} energies and multiplicities. This refined model is mainly based on a mass-dependent temperature ratio law used for the initial excitation energy partition of the fission fragments and a spin-dependent excitation energy limit for neutron emission. These phenomenological improvements allow us to reproduce with a good agreement the {sup 252}Cf(sf) experimental data on prompt fission neutron multiplicity {nu}(A), {nu}(TKE), the neutron multiplicity distribution P({nu}), as well as their energy spectra N(E), and lastly the energy release in fission.

• OSTI ID: 21499193
• Journal Information: Physical Review. C, Nuclear Physics, Vol. 82, Issue 5; Other Information: DOI: 10.1103/PhysRevC.82.054616; (c) 2010 The American Physical Society; ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CALIFORNIUM 252
COMPUTERIZED SIMULATION
DE-EXCITATION
DISTRIBUTION
ENERGY SPECTRA
EXCITATION
FISSION
FISSION FRAGMENTS
MASS
MONTE CARLO METHOD
MULTIPLICITY
NEUTRON EMISSION
NUCLEAR PHYSICS
PROMPT NEUTRONS
SPIN
ACTINIDE NUCLEI
ALPHA DECAY RADIOISOTOPES
ANGULAR MOMENTUM
BARYONS
CALCULATION METHODS
CALIFORNIUM ISOTOPES
ELEMENTARY PARTICLES
EMISSION
ENERGY-LEVEL TRANSITIONS
EVEN-EVEN NUCLEI
FERMIONS
FISSION NEUTRONS
HADRONS
HEAVY NUCLEI
ISOTOPES
NEUTRONS
NUCLEAR FRAGMENTS
NUCLEAR REACTIONS
NUCLEI
NUCLEONS
PARTICLE PROPERTIES
PHYSICS
RADIOISOTOPES
SIMULATION
SPECTRA
SPONTANEOUS FISSION RADIOISOTOPES
YEARS LIVING RADIOISOTOPES