Post-scission fission theory: Neutron emission in fission

Technical Report · Sat Nov 01 04:00:00 EST 1997

DOI:https://doi.org/10.2172/548904· OSTI ID:548904

Madland, D G

A 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 {nu}}{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 recent models. In particular, the dependencies of N (E) and {bar {nu}}{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 limitations to current (and future) approaches.

• Research Organization: Los Alamos National Lab., NM (United States)
• Sponsoring Organization: USDOE Office of Energy Research, Washington, DC (United States)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 548904
• Report Number(s): LA-UR--97-2657; ON: DE98001086
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
ACCURACY
CALCULATION METHODS
EXCITATION
FISSION
MULTIPLICITY
NEUTRON EMISSION
NEUTRON SPECTRA