1. NAME AND TITLE OF DATA LIBRARY

THERMGAM: Prompt Gamma Rays from Thermal-Neutron Capture.

2. NAME AND TITLE OF DATA RETRIEVAL PROGRAMS

None.

3. CONTRIBUTOR

Atomic Energy of Canada Limited, Chalk River Nuclear Laboratories, Chalk River, Ontario, Canada.

4. HISTORICAL BACKGROUND AND INFORMATION

Previous compilations provided information on gamma rays from thermal-neutron capture in individual isotopes and natural elements and covered data published prior to 1969. Since then more data with higher resolution have become available which supersede earlier results. The present catalog based on the data published between 1968 and March 1980 updates the information on natural elements in the previous compilations.

5. APPLICATION OF THE DATA

This catalog of prompt gamma rays from thermal-neutron capture in natural elements is designed primarily as a convenient tool for analytical prompt gamma-ray spectroscopy. Other potential uses are the identification of background gamma rays and of chemical trace impurities in target materials used for (n,gamma) studies and for prediction of secondary gamma rays from materials irradiated by neutrons.

6. SOURCE AND SCOPE OF DATA

The data from the Chalk River Laboratories are given in two tables for Z = 1-83 (except Pm), 90, and 94. In Table 1, gamma rays are listed in order of increasing energy. Table 1 includes intensity, thermal-neutron radiative-capture cross section, and two other major lines from the same element. It includes additional weaker lines not included in Ref. 2. In Table 2, gamma rays are listed by element. This table includes thermal-neutron radiative-capture cross sections, and a list of gamma-ray energies, energy uncertainties, and intensities.

7. DISCUSSION OF THE DATA RETRIEVAL PROGRAMS

There is no retrieval program.

8. DATA FORMAT AND COMPUTER

Table 1 is formatted as a Fortran output file for printing. Both Table 1 and Table 2 contain 80 characters per record. Mainframes, minicomputers, and IBM PC.

9. TYPICAL RUNNING TIME

Does not apply.

10. REFERENCES

1. D. K. Trubey, Informal notes, ORNL (August 1988).

2. M. A. Lone, R. A. Leavitt, and D. A. Harrison, "Prompt Gamma Rays from Thermal-Neutron Capture," Atomic Data and Nuclear Data Tables, 26(6), 511-559 (1981).

11. CONTENTS OF LIBRARY

Included are reference 1, the text of reference 2, and Tables 1 and 2 on one (1.44MB) DOS diskette.

12. DATE OF ABSTRACT

August 1988.