Nuclear data for /sup 235/U, /sup 238/U, and /sup 239/Pu in the unresolved resonance region
- 1. Institute of Physics and Power Engineering, SCAE, Obninsk
Description
Transmission and fission self-indication were measured for the isotopes /sup 235/U, /sup 238/U, and /sup 239/Pu in the unresolved resonance region for a wide range of material thicknesses. The fission cross section of /sup 235/U serves as standard. The other isotopes are the basic fuel components in plutonium fast breeder reactors. The experimental results obtained were analyzed together with average cross-section data using the multilevel R-matrix formalism. The objective of the consistent analysis was to estimate sets of mean resonance parameters. For this purpose, a new multilevel ladder technique was developed (Monte Carlo method) that enabled calculation of all the functionals of interest including their sensitivity coefficients related to the mean resonance parameters. Hence, the perturbation approach and the correlated random sampling technique were employed
Additional details
Publishing Information
- Journal Title
- Nucl. Sci. Eng.
- Journal Volume
- 96
- Journal Issue
- 2
- Series
- Nucl. Sci. Eng.
- Journal Page Range
- 122-136
- ISSN
- 0029-5639
- CODEN
- NSENA
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 18093251
- Subject category
- S73: NUCLEAR PHYSICS AND RADIATION PHYSICS;
- Descriptors DEI
- FAST FISSION; FBR TYPE REACTORS; MONTE CARLO METHOD; NEUTRON REACTIONS; NUCLEAR DATA COLLECTIONS; PERTURBATION THEORY; PLUTONIUM 239 TARGET; R MATRIX; RESONANCE; SAMPLING; SENSITIVITY ANALYSIS; THICKNESS; TOTAL CROSS SECTIONS; URANIUM 235 TARGET; URANIUM 238 TARGET
- Descriptors DEC
- BARYON REACTIONS; BREEDER REACTORS; CROSS SECTIONS; DIMENSIONS; EPITHERMAL REACTORS; FAST REACTORS; FISSION; HADRON REACTIONS; MATRICES; NUCLEAR REACTIONS; NUCLEON REACTIONS; REACTORS; TARGETS