Application of adjusted data in calculating fission-product decay energies and spectra. [ADENA code]
The code ADENA, which approximately calculates fission-product beta and gamma decay energies and spectra in 19 or fewer energy groups from a mixture of /sup 235/U and /sup 239/Pu fuels, is described. The calculation uses aggregate, adjusted data derived from a combination of several experiments and summation results based on the ENDF/B-V fission-product file. The method used to obtain these adjusted data and the method used by ADENA to calculate fission-product decay energy with an absorption correction are described, and an estimate of the uncertainty of the ADENA results is given. Comparisons of this approximate method are made to experimental measurements, to the ANSI/ANS 5.1-1979 standard, and to other calculational methods. A listing of the complete computer code (ADENA) is contained in an appendix. Included in the listing are data statements containing the adjusted data in the form of parameters to be used in simple analytic functions. These fitted parameters can be abstracted for other uses such as in spatial neutron depletion or thermal hydraulics codes.
- Research Organization:
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 5228747
- Report Number(s):
- LA-9362-MS; ON: DE82019182
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
22 GENERAL STUDIES OF NUCLEAR REACTORS
COMPUTER CODES
A CODES
FISSION PRODUCTS
BETA DECAY
ENERGY-LEVEL TRANSITIONS
NUCLEAR FUELS
AFTER-HEAT
BETA SPECTRA
COMPUTER CALCULATIONS
EXPERIMENTAL DATA
FUEL ELEMENTS
GAMMA SPECTRA
PLUTONIUM 239
Q-VALUE
THEORETICAL DATA
URANIUM 235
ACTINIDE ISOTOPES
ACTINIDE NUCLEI
ALPHA DECAY RADIOISOTOPES
DATA
DECAY
ENERGY
ENERGY SOURCES
EVEN-ODD NUCLEI
FUELS
HEAVY NUCLEI
INFORMATION
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
MATERIALS
MINUTES LIVING RADIOISOTOPES
NUCLEI
NUMERICAL DATA
PLUTONIUM ISOTOPES
RADIOACTIVE MATERIALS
RADIOISOTOPES
REACTOR COMPONENTS
REACTOR MATERIALS
SPECTRA
URANIUM ISOTOPES
YEARS LIVING RADIOISOTOPES
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