Reference Database for Beta-Delayed Neutron Emission Evaluation
Closed for Proposals
Project Type
Coordinated Research ProjectProject Code
F41030
CRP
1960
Approved Date
Project Status
ClosedStart Date
Expected End Date
Completed Date
Description
The field of beta delayed neutron emission has been of interest since the discovery of nuclear fission. However, the status of compilation of available data is not satisfactory. Applying state-of-the-art experimental techniques, new measurements of beta delayed neutrons have been undertaken at various different laboratories such as GSI (Germany), Triumf (Canada), Riken (Japan) and ORNL (USA). It has been indicated that the IAEA should take a role at the centre of these activities and coordinate the efforts by evaluating, compiling and, eventually, disseminating the results in form of a Reference Database for Beta-delayed Neutron Emission Evaluation. Therefore this CRP is proposed.
Objectives
To enhance Member States’ (MS) knowledge and calculational capabilities in the fields of Nuclear Energy, Safeguards, used fuel and waste management and nuclear sciences by creating a Reference Database for Beta-delayed neutron Emission that contains both a compilation of existing data and recommended data, which will be made readily available to the user community.
Specific Objectives
Compile the existing Beta-delayed neutron data, in particular half-lives, neutron emission probabilities and neutron spectra for individual precursors
Create a reference database of evaluated data for beta-delayed neutron emission
Define and document the evaluation methodology and the “Standards” for delayed neutron emission in different mass regions,
Produce tools to extrapolate results to unknown nuclei by use of theoretical models or systematic trends
Re-evaluate the beta-delayed neutron reactor constants in suitable group format for energy applications and include in database.
CRP Publications
Nuclear Data Sheets (ELSEVIER)
International Peer-reviewed journal
2014
First Compilation and Evaluation of Beta-Delayed Neutron Emission Probabilities and Associated Half-Lives for A = 72 Nuclei, by M. Birch, B. Singh, D. Abriola et al