Accurate evaluation of multigroup transfer cross sections and their Legendre coefficients

Journal Article · Thu Apr 01 04:00:00 EST 1982 · Nucl. Sci. Eng.; (United States)

OSTI ID:6653736

Hong, K J; Shultis, J K

For transport problems with fine energy group structure, the group-to-group transfer cross sections are usually quite anisotropic in the scattering angle. It is shown for neutron inelastic scattering that explicit use of the characteristic shape of these transfer cross sections permits more efficient and accurate numerical evaluation of their Legendre expansion coefficients than is afforded by existing techniques. In addition, transfer cross sections can often be well approximated by piecewise, low-order polynomials with which very accurate and simple expressions can be derived for the Legendre coefficients. This analytical approach both minimizes the access of nuclear data files and accurately determines even the higher order coefficients. Refs.

• Research Organization: Kansas State Univ, Manhattan, USA
• OSTI ID: 6653736
• Journal Information: Nucl. Sci. Eng.; (United States), Journal Name: Nucl. Sci. Eng.; (United States) Vol. 80:4; ISSN NSENA
• Country of Publication: United States
• Language: English

Related Subjects

22 GENERAL STUDIES OF NUCLEAR REACTORS
220100* -- Nuclear Reactor Technology-- Theory & Calculation
654003 -- Radiation & Shielding Physics-- Neutron Interactions with Matter
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CALCULATION METHODS
CROSS SECTIONS
KINETICS
NEUTRAL-PARTICLE TRANSPORT
NEUTRON TRANSPORT
RADIATION TRANSPORT
REACTOR KINETICS