New Work on Updating and Extending the Nuclear Data Standards

Author(s)

Allan D. Carlson, Vladimir G. Pronyaev, R Capote, Franz Josef Hambsch, Franz Käppeler, Claudia Lederer, Wolf Mannhart, Alberto Mengoni, Ronald O. Nelson, Peter Schillebeeckx, Patrick Talou, Siegfried Tagesen, Herbert Vonach, A. Vorobyev, Anton Wallner

Abstract

An International Atomic Energy Agency (IAEA) Data Development Project

was initiated to provide a mechanism for allowing new experimental data

and improvements in evaluation procedures to be incorporated into new

evaluations of the standards. The work on this project is ongoing. In

the past very long periods sometimes occurred between evaluations of the

standards. Through the use of this Project, such long periods should

not occur. Work on the cross section standards through this Project has

included an update of the experimental data to be used in the cross

section standards evaluations, a study of the uncertainties obtained in

the international standards evaluation, and improvements in the

smoothing procedure for capture cross sections. It was decided that this

Project should have a broader range of activities than just the cross

section standards and thus encompass standards related activities. The

following are being investigated: improvements in the gold cross section

at energies below where it is considered a standard and work on certain

cross sections that are not as well known as the cross section

standards but could be very useful as reference cross sections relative

to which certain types of cross section measurements can be made. This

work includes prompt gamma-ray production in fast neutron-induced

reactions, and work on the ²⁵²Cf spontaneous fission neutron spectrum and the ²³⁵U thermal neutron fission spectrum. Most of the data investigated through this Project are used in dosimetry applications.

Organisation(s)

Isotope Physics

External organisation(s)

National Institute of Standards and Technology, Gaithersburg, Institute of Physics and Power Engineering (IPPE), International Atomic Energy Agency (IAEA), Commiss European Communities, Joint Res Ctr, Inst Reference Mat & Measurements, Karlsruher Institut für Technologie, Physikalisch-Technische Bundesanstalt, Italian National Agency for New Technologies, Energy and Sustainable Economic Development, Los Alamos National Laboratory, Russian Academy of Sciences

Journal

Journal of ASTM international

Volume

9

Pages

1-14

No. of pages

14

ISSN

1546-962X

DOI

https://doi.org/10.1520/JAI104095

Publication date

2012

Peer reviewed

Yes

Austrian Fields of Science 2012

1030 Physics, Astronomy

Portal url

https://ucrisportal.univie.ac.at/en/publications/7cc47680-119d-4f15-963b-fa0c7be2e187