Evaluated delayed neutron precursor data

Conference · Thu Jan 01 04:00:00 EST 1987 · Trans. Am. Nucl. Soc.; (United States)

OSTI ID:5747040

England, T R; Brady, M C; Arthur, E D; LaBauve, R J; Mann, F M

Based on energetics, approx. 270 fission products should be delayed neutron precursors. Of these, approx. 85 have measured and evaluated emission probabilities (Pn's) and approx. 34 have measured spectra data; the latter account for 80% or more of the total anti v/sub d/. Although the measurements are probably adequate for most reactor applications, complete data sets are needed for ENDF/B and for fission product yield evaluations. This paper briefly describes the use of systematics and nuclear models used to produce a complete set of data for 272 precursors and presents aggregate summation calculations needed to produce the conventional six-time-group approximations.

• Research Organization: Los Alamos National Lab., NM
• OSTI ID: 5747040
• Report Number(s): CONF-870601-
• Conference Information: Journal Name: Trans. Am. Nucl. Soc.; (United States) Journal Volume: 54
• Country of Publication: United States
• Language: English

Related Subjects

22 GENERAL STUDIES OF NUCLEAR REACTORS
220100* -- Nuclear Reactor Technology-- Theory & Calculation
BARYONS
DELAYED NEUTRON PRECURSORS
ELEMENTARY PARTICLES
FAST NEUTRONS
FERMIONS
FISSION PRODUCTS
GROUP THEORY
HADRONS
ISOTOPES
MATERIALS
MATHEMATICAL MODELS
MATHEMATICS
NEUTRON SPECTRA
NEUTRONS
NUCLEAR DATA COLLECTIONS
NUCLEONS
RADIOACTIVE MATERIALS
RADIOISOTOPES
SPECTRA
THERMAL NEUTRONS