Integral-capture measurements and cross-section adjustments for Nd, Sm, and Eu
Integral-capture reaction rates are reported for /sup 143/Nd, /sup 144/Nd, /sup 145/Nd, /sup 147/Sm, /sup 151/Eu, /sup 152/Eu, /sup 153/Eu, and /sup 154/Eu irradiated in different neutron spectra in EBR-II. These reaction rates are based primarily on mass-spectrometric measurements of the isotopic atom ratios of the capture product to the target nuclide. The neutron spectra are characterized using passive neutron dosimetry and spectrum-unfolding with the FERRET least-squares data analysis code. Reaction rates for the neutron spectrum monitors were determined by the radiometric technique using Ge(Li) spectrometers. These rates are also reported here. The integral data for the rare-earth samples and for the spectrum monitors were used in multigroup flux/cross-section adtustment analyses with FERRET to generate adjustments to 47 group representations of the ENDF/B-IV capture cross sections for the rare-earth isotopes. These adjusted cross sections are in good agreement with recent differential data and with adjusted cross sections based on STEK integral data. Examples are given of the use of the adjusted cross sections and covariance matrices for cross-section evaluation.
- Research Organization:
- EG and G Idaho, Inc., Idaho Falls (USA); Hanford Engineering Development Lab., Richland, WA (USA)
- DOE Contract Number:
- AC07-76ID01570
- OSTI ID:
- 6156066
- Report Number(s):
- EGG-PHYS-5182; ON: DE81029635; TRN: 81-016306
- Country of Publication:
- United States
- Language:
- English
Similar Records
Neodymium, samarium and europium capture cross-section adjustments based on EBR-II integral measurements. [Preliminary results]
RARE EARTH FISSION PRODUCT YIELDS FROM HIGHLY IRRADIATED PLUTONIUM 239
Related Subjects
22 GENERAL STUDIES OF NUCLEAR REACTORS
EUROPIUM 151 TARGET
NEUTRON REACTIONS
EUROPIUM 152 TARGET
EUROPIUM 153 TARGET
EUROPIUM 154 TARGET
FAST REACTORS
POISONING
NEODYMIUM 143 TARGET
CAPTURE
NEODYMIUM 144 TARGET
NEODYMIUM 145 TARGET
SAMARIUM 147 TARGET
SAMARIUM 149 TARGET
ACTIVATION DETECTORS
CORRECTIONS
EBR-2 REACTOR
EXPERIMENTAL DATA
FISSION PRODUCTS
INTEGRAL CROSS SECTIONS
MEASURING METHODS
NEUTRON FLUX
NEUTRON SPECTRA
REACTIVITY WORTHS
REACTOR EXPERIMENTAL FACILITIES
SAMPLE PREPARATION
BARYON REACTIONS
BREEDER REACTORS
CROSS SECTIONS
DATA
EPITHERMAL REACTORS
EXPERIMENTAL REACTORS
FBR TYPE REACTORS
HADRON REACTIONS
INFORMATION
ISOTOPES
LIQUID METAL COOLED REACTORS
LMFBR TYPE REACTORS
MATERIALS
MEASURING INSTRUMENTS
NEUTRON DETECTORS
NUCLEAR REACTIONS
NUCLEON REACTIONS
NUMERICAL DATA
POWER REACTORS
RADIATION DETECTORS
RADIATION FLUX
RADIOACTIVE MATERIALS
REACTOR COMPONENTS
REACTORS
RESEARCH AND TEST REACTORS
SODIUM COOLED REACTORS
SPECTRA
TARGETS
651725* - Nuclear Properties & Reactions
A=90-149
Experimental- Nuclear Reactions & Scattering- (-1987)
651825 - Nuclear Properties & Reactions
A=150-189
Experimental- Nuclear Reactions & Scattering- (-1987)
220100 - Nuclear Reactor Technology- Theory & Calculation