1. NAME AND TITLE

TPASGAM85: Radioactive Decay Library of Gamma-Ray Energies, Branching Ratios, and Cross Sections.

2. NAME AND TITLE OF DATA RETRIEVAL PROGRAMS

FIXISO: To update the gamma-ray data file ordered by nuclide number.

DECAYDAT: To read and list the gamma-ray data file ordered by nuclide number.

TPASLIST: To read and list data file ordered by energy.

3. CONTRIBUTORS

Oak Ridge National Laboratory, Oak Ridge, Tennessee.

EG&G Energy Measurements, Inc., Goleta, California.

4. HISTORICAL BACKGROUND INFORMATION

The data reported in DLC-19/DECAYGAM were the parent data for this library. Additions and changes have been primarily for fission product radionuclides and for heavy actinides. Other changes include determining the absolute normalization for most of the relative branching ratios given in the parent file. The original TPASGAM data library was made available April 1982. Major revisions were made August 1983, September 1984, and October 1985.

5. APPLICATIONS OF THE DATA

This compilation of radionuclide decay data contains, for those radionuclides tabulated, all necessary data for qualitatively and quantitatively measuring the concentration of photon emitting radionuclides as well as conducting activation analyses using gamma-ray spectrometry. It was developed specifically for use with RSIC code package PSR-164/TPASS.

6. SOURCE AND SCOPE OF DATA

The TPASGAM data library contains gamma-ray decay information for 1438 radionuclides. The data consist of gamma-ray energies and intensities as well as cross-section information useful in activation analysis.

7. DISCUSSION OF THE DATA RETRIEVAL PROGRAMS

D00088ALLCP04

FIXISO, the program for editing the data library ordered by nuclide number, is an interactive PDP-10 Fortran IV program. The user is prompted to name the data file, to identify the nuclide to be edited and then for the datum to be replaced and its new value. More than one element may be changed while executing the program; however, the changes must be ordered by nuclide number since the input file is not rewound.

DECAYDAT runs on the IBM 3033 and reads the data library ordered by nuclide number from unit 5 and prints it on unit 6 with comments.

TPASLIST runs interactively on Vax computers. It reads the file ordered by energy and lists data for selected nuclides.

SEARCH.FOR is a Fortran program to perform searches for records on the data library ordered by nuclide number. It can be linked with additional subprograms to perform calculations required for user's applications.

8. DATA FORMAT AND COMPUTERS

ASCII card images; FIXISO, PDP-10; DECAYDAT, IBM 3033; TPASLIST, VAX.

ASCII files of the nuclide ordered table (D00088ALLCP04).

9. TYPICAL RUNNING TIME

Several changes to the data file can be made running FIXISO in less than 15 CPU seconds. DECAYDAT runs in less than 3 CPU seconds.

10. REFERENCES

a Included in package:

J. K. Dickens, Informal Notes (October 1985).

b. Background information:

RSIC Data Package DLC-19/DECAYGAM.

11. CONTENTS OF LIBRARY

Included are the referenced document (10.a) and one (1.2MB) DOS diskette which contains three Fortran programs and the three data libraries ordered by nuclide number, energy and half life.

12. DATE OF ABSTRACT

August 1983; updated October 1984, January 1986, April 1986, June 1988, November 1993, September 1999.

KEYWORD: RADIOACTIVE DECAY SPECTRA