Evaluated delayed neutron precursor data

Conference · Thu Jan 01 04:00:00 EST 1987

OSTI ID:6539871

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 ..nu../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. 10 refs., 2 figs.

• Research Organization: Los Alamos National Lab., NM (USA)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 6539871
• Report Number(s): LA-UR-87-49; CONF-870601-7; ON: DE87005118
• Country of Publication: United States
• Language: English

Related Subjects

652020* -- Nuclear Properties & Reactions
A=220 & above
Experimental
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BARYON REACTIONS
DATA
DELAYED NEUTRON PRECURSORS
ENERGY SPECTRA
EVALUATED DATA
EXPERIMENTAL DATA
FAST FISSION
FISSION
HADRON REACTIONS
INFORMATION
ISOTOPES
NEUTRON REACTIONS
NUCLEAR REACTIONS
NUCLEON REACTIONS
NUMERICAL DATA
RADIOISOTOPES
SPECTRA
THEORETICAL DATA
THERMAL FISSION