Theoretical models of neutron emission in fission

Conference · Wed Jan 01 04:00:00 EST 1992

OSTI ID:6818238

Madland, D G

A brief survey of theoretical representations of two of the observables in neutron emission in fission is given, namely, the prompt fission neutron spectrum N(E) and the average prompt neutron multiplicity [bar v][sub p]. Early representations of the two observables are presented and their deficiencies are discussed. This is followed by summaries and examples of recent theoretical models for the calculation of these quantities. Emphasis is placed upon the predictability and accuracy of the new models. In particular, the dependencies of N(E) and [bar v][sub p] upon the fissioning nucleus and its excitation energy are treated. Recent work in the calculation of the prompt fission neutron spectrum matrix N(E,E[sub n]), where E[sub n] is the energy of the neutron inducing fission, is then discussed. Concluding remarks address the current status of our ability to calculate these observables with confidence, the direction of future theoretical efforts, and limititations to current and future calculations. Finally, recommendations are presented as to which model should be used currently and which model should be pursued in future efforts.

• Research Organization: Los Alamos National Lab., NM (United States)
• Sponsoring Organization: DOE; USDOE, Washington, DC (United States)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 6818238
• Report Number(s): LA-UR-92-4170; CONF-921046--15; ON: DE93005482
• Country of Publication: United States
• Language: English

Related Subjects

663430 -- Nucleon-Induced Reactions & Scattering-- (1992-)
663470* -- Fission-- (1992-)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ACTINIDE ISOTOPES
ACTINIDE NUCLEI
ALPHA DECAY RADIOISOTOPES
CALIFORNIUM 252
CALIFORNIUM ISOTOPES
DISTRIBUTION FUNCTIONS
EMISSION
EVEN-EVEN NUCLEI
FISSION
FUNCTIONS
HEAVY NUCLEI
ISOTOPES
MATHEMATICAL MODELS
MULTIPLICITY
NEUTRON EMISSION
NEUTRON SPECTRA
NUCLEAR DATA COLLECTIONS
NUCLEAR MODELS
NUCLEAR REACTIONS
NUCLEI
RADIOISOTOPES
SPECTRA
SPONTANEOUS FISSION RADIOISOTOPES
YEARS LIVING RADIOISOTOPES