Sensitivity of computed uranium-238 self-shielding factors to the choice of the unresolved average resonance parameters

Journal Article · Sat May 01 04:00:00 EDT 1982 · Nucl. Sci. Eng.; (United States)

OSTI ID:6846571

Munoz-Cobos, J L; de Saussure, G; Perez, R B

The influence of different representations of the unresolved resonances of /sup 238/U on the computed self-shielding factors is examined. It is shown that the evaluated infinitely diluted average capture cross section does not provide sufficient information to determine a unique set of unresolved resonance parameters; different sets of unresolved resonance parameters equally consistent with the evaluated average capture cross section yield significantly different computed self-shielding factors. In the conclusion it is recommended that the resolved resonance description of the evaluated /sup 238/U cross sections be extended to higher energies and that thick sample transmission data and self-indication data be used to improve the evaluation of the unresolved resonance region.

• Research Organization: Oak Ridge National Laboratory, P.O. Box X, Bldg. 6025 Oak Ridge, Tennessee 37830
• OSTI ID: 6846571
• Journal Information: Nucl. Sci. Eng.; (United States), Journal Name: Nucl. Sci. Eng.; (United States) Vol. 81:1; ISSN NSENA
• Country of Publication: United States
• Language: English

Related Subjects

652015* -- Nuclear Properties & Reactions
A=220 & above
Theoretical-- Nuclear Reactions & Scattering-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BARYON REACTIONS
CAPTURE
COMMUNICATIONS
COMPUTER CALCULATIONS
CROSS SECTIONS
DATA ACQUISITION
DATA TRANSMISSION
ENERGY LEVELS
EVALUATION
HADRON REACTIONS
NEUTRON REACTIONS
NUCLEAR REACTIONS
NUCLEON REACTIONS
PARAMETRIC ANALYSIS
RESONANCE
SELF-SHIELDING
SHIELDING
TARGETS
URANIUM 238 TARGET