Sensitivity of fast neutron spectra and integral parameters to $sup 238$U inelastic scattering cross sections (in French)
Technical Report
·
OSTI ID:4933500
Fast neutron spectrum measurements by time-of-flight or proton recoil techniques are a new type of integral measurements permitting to adjust scattering cross sections. Important discrepancies between experimental and calculated spectra are observed, which can at least partly be attributed to errors in the /sup 238/U inelastic scattering matrix. The sensivity of the macroscopic spectra (25-group energy mesh) and integral parameters to the inelastic scattering cross sections of /sup 238/U was studied in two cases: in fundamental mode for three media with different contents of /sup 238/U and space dependent calculations in a fast core reflected by two different /sup 238/U blankets. (FR)
- Research Organization:
- CEA Centre d'Etudes Nucleaires de Cadarache, 13 - Saint-Paul-les- Durance (France)
- Sponsoring Organization:
- Sponsor not identified
- NSA Number:
- NSA-29-003980
- OSTI ID:
- 4933500
- Report Number(s):
- CEA-N--1632
- Country of Publication:
- France
- Language:
- French
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Related Subjects
ACCURACY
BREEDING BLANKETS
COMPUTER CALCULATIONS
CROSS SECTIONS
ERRORS
FAST NEUTRONS
MULTIGROUP THEORY
N69151* --Physics (Nuclear
Experimental)--Nuclear Properties & Reactions
A >= 220--Nuclear Reactions & Scattering
N69161 -- Physics (Nuclear
Experimental)--Nuclear Properties & Reactions
A >= 220-- Nuclear Reactions & Scattering--Spontaneous & Induced Fission:734
NEUTRON BEAMS
NEUTRON FLUX
NEUTRON REACTIONS
NEUTRON SPECTRA
NUCLEAR REACTION KINETICS
URANIUM 238
BREEDING BLANKETS
COMPUTER CALCULATIONS
CROSS SECTIONS
ERRORS
FAST NEUTRONS
MULTIGROUP THEORY
N69151* --Physics (Nuclear
Experimental)--Nuclear Properties & Reactions
A >= 220--Nuclear Reactions & Scattering
N69161 -- Physics (Nuclear
Experimental)--Nuclear Properties & Reactions
A >= 220-- Nuclear Reactions & Scattering--Spontaneous & Induced Fission:734
NEUTRON BEAMS
NEUTRON FLUX
NEUTRON REACTIONS
NEUTRON SPECTRA
NUCLEAR REACTION KINETICS
URANIUM 238