1. NAME AND TITLE OF DATA LIBRARY

TDF: Thermonuclear Data File

2. NAME AND TITLE OF DATA RETRIEVAL PROGRAMS

TDFLIB: Library of TDF access subroutines.

3. CONTRIBUTOR

Lawrence Livermore National Laboratory, Livermore, California under sponsorship of the DOE/ER-FE.

4. HISTORICAL BACKGROUND AND INFORMATION

The library was created to provide a consistent well-documented set of evaluated cross sections from which processed information can be generated for use in fusion applications and also to provide the user with a realistic assessment of the uncertainties remaining in the reaction cross sections.

5. APPLICATION OF THE DATA

The library contains reaction rates and spectral information (for 2-body reactions only) about the outgoing particles in plasma as a function of temperature. The range of plasma temperatures is from 0.1 to 1000 keV. The library was intended for use in fusion applications.

6. SOURCE AND SCOPE OF DATA

Total reaction cross sections have been extracted as a function of energy. The sources of experimental data were in the form of integrated cross sections, angular distributions of secondary particles, measurements at one angle multiplied by 4*pi where the angular distribution is assumed or isotropic. Some data sets were available only in graphical form and were scanned with a digitizing program. Integrated cross sections were obtained from measured angular distributions by converting them to center-of-mass values and using least squares fit to obtain the Legendre polynomial coefficients. The evaluated integrated reaction cross sections are in the ENDF/B-VI format.

7. DISCUSSION OF THE DATA RETRIEVAL PROGRAMS

This code package consists entirely of subroutines to be called by programs written by the user. All background information is contained on comment cards (i.e. lines) in the package. The subroutine TDFRDR reads TDF into machine memory; SVBLU looks up for a given reaction and plasma temperature; MXAVLU provides Maxwellian-averaged energies of the reaction pair and reaction products; SPECLU provides the energy and spectral distribution of an outgoing particle from a two-body final state reaction as a function of plasma temperature; TDMASS provides the nuclear masses used for all particles in a reaction and the Q-value of the reaction in MeV.

8. DATA FORMAT AND COMPUTER

Card images; all computers in general.

9. TYPICAL RUNNING TIME

The sample retrieval program ran in a couple of seconds on an IBM RISC 550 workstation.

10. REFERENCES

R. M. White, D. A. Resler, S. I. Warshaw, "Evaluation of Charged-Particle Reactions for Fusion Applications," UCRL-JC-107158 (May 1991).

R. M. White, S. I. Warshaw, D. A. Resler, "Users Manual for TDF and TDFLIB: A Thermonuclear Data File and Access Routine Library," UCRL-JC-109082 (November 1991).

11. CONTENTS OF PACKAGE

The package contains the documents referenced Fortran access routines, and the data library. The data library is transmitted on one DS/HD 5.25-inch diskette (1.2 MB).

12. DATE OF ABSTRACT

September 1992.