Few-group representations of the energy spectra of delayed neutrons

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

OSTI ID:5747079

Brady, M C; England, T R

The importance of delayed neutrons in reactor calculations has been well established. A recent evaluation of delayed neutron data has resulted in the compilation of a reference library containing emission probabilities, Pn's, and energy spectra for approx. 272 individual precursor nuclides. The library may be used to calculate aggregate spectra and total delayed neutron yields for various fission systems by applying summation techniques. It is common practice in reactor calculations to use a few-temporal group (e.g., six) representation of delayed neutron data. The above-mentioned library has been analyzed in terms of group yields and half-lives for 3, 6, 9, and 12 delayed neutron groups. However, the few-group representation cannot be considered completed until the energy spectra are represented in a consistent manner. The purpose of this paper is to present the method and results of the few-group analysis of the energy spectra.

• Research Organization: Los Alamos National Lab., NM
• OSTI ID: 5747079
• 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 NEUTRONS
ELEMENTARY PARTICLES
ENERGY SPECTRA
FERMIONS
FISSION
FISSION NEUTRONS
GROUP THEORY
HADRONS
MATHEMATICAL MODELS
MATHEMATICS
NEUTRONS
NUCLEAR REACTIONS
NUCLEONS
PHYSICS
PROBABILITY
REACTOR PHYSICS
SPECTRA