Fission product yield data for the transmutation of minor actinide nuclear waste
A Coordinated Research Project of the IAEA Nuclear Data Section
OBJECTIVES
The primary objective of the project has been to develop fission yield systematics and nuclear models as tools for the evaluation of energy-dependent fission yields up to an incident neutron energy of 150 MeV. Several concepts for the transmutation of nuclear waste have been proposed using thermal and fast reactors as incinerators, or accelerator driven systems. Fission yields and other nuclear data are required for various exploratory studies. Thermal reactors require thermal fission yields, fast reactors require yields up to a neutron energy of 20 MeV, while accelerator driven systems involve fission yield data up to a neutron energy of 150 MeV. Fission yields are needed for the calculation of neutron economy, reactor kinetics, decay heat and inventory (for burn-up, toxicity and loss of reactivity).
Fission yield systematics were developed from relatively few measurements in order to estimate fission yields over a wide range of fissioning nuclides for neutron energies ranging from thermal to 150 MeV. Specific nuclear models were also developed with identical aims in mind. A benchmark exercise was undertaken to test and compare the resulting systematics and nuclear models. The bibliographic compilations and all resulting benchmark data can be found on the CD-ROM, while the overall findings of this exercise are described in the technical report.
COMPILATIONS AND EVALUATIONS
- H.O. Denschlag - measurements of product yields from fission reactions induced by high-energy neutrons, protons, deuterons, alpha particles, other charged particles and photons, (MSWord, PDF)
- M.C. Duijvestijn - proton induced fission yield data,
- Liu Tingjin - EXFOR index and entries of neutron-induced fission yield data as compiled for the project,
- R.W. Mills - bibliographic data, (MSWord, PDF)
- V.M. Maslov - Emissive fission contributions to total fission cross sections up to 200 MeV,
- V.M. Maslov - Symmetric/asymmetric fission cross sections for U-235 and U-238 up to 200 MeV.
BENCHMARK RESULTS
Individual results of the benchmark exercise.
- M.C. Duijvestijn: Description of Benchmark Calculations (MSWord, PDF) and Results
- J. Katakura: A New Parameter Set of Fission Product Mass Yields Systematics (MSWord, PDF) and Results
- Yu.V Kibkalo: Fragment Mass Distribution for U-238 Fission by Neutrons of 2 to 200 MeV (MSWord, PDF) and Results
- Liu Tingjin: Results
- A.C. Wahl: Results