1. NAME AND TITLE

HIC-1: Monte Carlo Code System for Calculating Heavy Ion Reactions at Energies > 50 MeV/Nucleon.

AUXILIARY ROUTINES

CONVERSION: Cross-Section and Evaporation Data BCD-to-Binary Converter Code.

NUCLEAR CONFIGURATION: Cross-Section Data Generator.

CASCADE: Intranuclear Cascade Code.

EVAPORATION: Intermediate-to-Final History Data Processor.

ANALYSIS: Final History Data AnalysisSpectral Data Tables Generation.

FLRAN, FLOTR, FLTRN: Random Number Generators.

2. CONTRIBUTOR

Oak Ridge National Laboratory, Oak Ridge, Tennessee.

3. CODING LANGUAGE AND COMPUTER

FORTRAN; IBM 360/370.

4. NATURE OF PROBLEM SOLVED

HIC-1 is designed to calculate continuum-state transitions between projectile and target in heavy-ion reactions at energies > 50 MeV/nucleon. In the course of a collision of two heavy ions, free nucleons, pions, and various ion fragments may be produced. Monte Carlo calculations of the energy and angular spectra of these emergent particles are performed.

5. METHOD OF SOLUTION

Monte Carlo techniques are used.

The underlying assumption in the model is that the reaction can be represented as the interaction of two Fermi gases of nucleons. As they pass through each other, a cascade takes place in the overlapping region of the projectile and the target with quasi-free nucleon-nucleon reactions. Evaporation processes in the ion fragments are included, but gamma-ray emission is not computed.

6. RESTRICTIONS OR LIMITATIONS

None noted.

7. TYPICAL RUNNING TIME

No study has been made by RSIC of typical running times for HIC-1.

8. COMPUTER HARDWARE REQUIREMENTS

HIC-1 is operable on the IBM 360/370 computers.

9. COMPUTER SOFTWARE REQUIREMENTS

A FORTRAN IV compiler and an assembler are required.

10. REFERENCES

H. W. Bertini, T. A. Gabriel, R. T. Santoro, O. W. Hermann, N. M. Larson, and J. M. Hunt, "HIC-1: A First Approach to the Calculation of Heavy-Ion Reactions at Energies > 50 MeV/Nucleon," ORNL-TM-4134 (January 1974).

R. T. Santoro, H. W. Bertini, T. A. Gabriel, N. M. Larson, and O. W. Hermann, "Operating Instructions for the Heavy-Ion Code HIC-1," ORNL-TM-4791 (March 1975).

T. A. Gabriel, R. T. Santoro, H. W. Bertini, and N. M. Larson, "Calculated Secondary-Particle Spectra from Alpha-Particle- and Carbon-Induced Nuclear Reactions," Technical Note, Nucl. Sci. and Eng., 53, (1974) 323-326.

H. W. Bertini, T. A. Gabriel, and R. T. Santoro, "Predicted Proton Spectrum at Forward Angles for 29.4-GeV Nitrogen on Carbon," Physical Review C, Vol. 9, No. 2 (February 1974).

11. CONTENTS OF CODE PACKAGE

Included are the referenced documents and one (1.2MB) DOS diskette which contains the source codes, cross sections and EVAP tables, and sample problem input, plus output from the sample problems.

12. DATE OF ABSTRACT

September 1975.