ICRP Publication 107

Nuclear Decay Data for Dosimetric Calculations

Recommended citation
ICRP, 2008. Nuclear Decay Data for Dosimetric Calculations. ICRP Publication 107. Ann. ICRP 38 (3).

Abstract - In this report, the Commission provides an electronic database of the physical data needed in calculations of radionuclide-specific protection and operational quantities. This database supersedes the data of Publication 38 (ICRP, 1983), and will be used in future ICRP publications of dose coefficients for the intake of or exposure to radionuclides in the workplace and the environment.

The database contains information on the half-lives, decay chains, and yields and energies of radiations emitted in nuclear transformations of 1252 radionuclides of 97 elements. The CD accompanying the publication provides electronic access to complete tables of the emitted radiations, as well as the beta and neutron spectra. The database has been constructed such that user-developed software can extract the data needed for further calculations of a radionuclide of interest. A Windows-based application is provided to display summary information on a user-specified radionuclide, as well as the general characterisation of the nuclides contained in the database. In addition, the application provides a means by which the user can export the emissions of a specified radionuclide for use in subsequent calculations.

© 2008 Elsevier Ltd. All rights reserved.

Keywords: Radionuclide transformation; Half-life; Beta spectra; Fission neutron spectra; Auger-electron spectra.

Key Points
· The yields and energies of radiations emitted in nuclear transformations of 1252 radionuclides have been assembled for use in calculating nuclide-specific protection and operational quantities.

· This publication supersedes Publication 38 which was issued in 1983, and will be used in future calculations by the Task Group on Dose Calculations of Committee 2.

· Nuclides were selected for consideration if their half-life exceeded 1 min or if formed in nuclear transformation of a selected radionuclide. N-16 (half-life 7.13 s) was included largely for historical purposes. It is, of course, necessary that the basic nuclear physics information should be suitable for meaningful calculations of yields and energies of the emitted radiations.

· Data were compiled for 922 radionuclides with a half-life of more than 10 min, 330 radionuclides with a half-life of less than 10 min, and assembled in five data files.

· The data files contained on the CD accompanying this publication embody no restriction on the number of radiations, as was necessary in the tables of Publication 38. A Windows-based application is provided to enable tabular and graphical viewing of the emitted radiations of the radionuclides. Electronic access to the data is provided to assist those wanting to use the data in calculations.

Executive Summary: Not included in this publication