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Title: Delayed neutron spectral data for Hansen-Roach energy group structure

Abstract

A detailed knowledge of delayed neutron spectra is important in reactor physics. It not only allows for an accurate estimate of the effective delayed neutron fraction {beta}{sub eff} but also is essential to calculating important reactor kinetic parameters, such as effective group abundances and the ratio of {beta}{sub eff} to the prompt neutron generation time. Numerous measurements of delayed neutron spectra for various delayed neutron precursors have been performed and reported in the literature. However, for application in reactor physics calculations, these spectra are usually lumped into one of the traditional six groups of delayed neutrons in accordance to their half-lives. Subsequently, these six-group spectra are binned into energy intervals corresponding to the energy intervals of a chosen nuclear cross-section set. In this work, the authors present a set of delayed neutron spectra that were formulated specifically to match Keepin`s six-group parameters and the 16-energy-group Hansen-Roach cross sections.

Authors:
;  [1]
  1. Los Alamos National Lab., NM (United States)
Publication Date:
OSTI Identifier:
678166
Report Number(s):
CONF-990605-
Journal ID: TANSAO; ISSN 0003-018X; TRN: 99:009151
Resource Type:
Journal Article
Journal Name:
Transactions of the American Nuclear Society
Additional Journal Information:
Journal Volume: 80; Conference: 1999 annual meeting of the American Nuclear Society (ANS), Boston, MA (United States), 6-10 Jun 1999; Other Information: PBD: 1999
Country of Publication:
United States
Language:
English
Subject:
22 NUCLEAR REACTOR TECHNOLOGY; REACTOR KINETICS; DELAYED NEUTRONS; NEUTRON SPECTRA; DELAYED NEUTRON FRACTION; EFFECTIVE RANGE THEORY; URANIUM 233; URANIUM 235; PLUTONIUM 239

Citation Formats

Campbell, J.M., and Spriggs, G.D. Delayed neutron spectral data for Hansen-Roach energy group structure. United States: N. p., 1999. Web.
Campbell, J.M., & Spriggs, G.D. Delayed neutron spectral data for Hansen-Roach energy group structure. United States.
Campbell, J.M., and Spriggs, G.D. Wed . "Delayed neutron spectral data for Hansen-Roach energy group structure". United States.
@article{osti_678166,
title = {Delayed neutron spectral data for Hansen-Roach energy group structure},
author = {Campbell, J.M. and Spriggs, G.D.},
abstractNote = {A detailed knowledge of delayed neutron spectra is important in reactor physics. It not only allows for an accurate estimate of the effective delayed neutron fraction {beta}{sub eff} but also is essential to calculating important reactor kinetic parameters, such as effective group abundances and the ratio of {beta}{sub eff} to the prompt neutron generation time. Numerous measurements of delayed neutron spectra for various delayed neutron precursors have been performed and reported in the literature. However, for application in reactor physics calculations, these spectra are usually lumped into one of the traditional six groups of delayed neutrons in accordance to their half-lives. Subsequently, these six-group spectra are binned into energy intervals corresponding to the energy intervals of a chosen nuclear cross-section set. In this work, the authors present a set of delayed neutron spectra that were formulated specifically to match Keepin`s six-group parameters and the 16-energy-group Hansen-Roach cross sections.},
doi = {},
journal = {Transactions of the American Nuclear Society},
number = ,
volume = 80,
place = {United States},
year = {1999},
month = {9}
}