1. NAME AND TITLE

ICOM: Code System for Calculating Ion Track Condensed Collision Model.

2. CONTRIBUTOR

Chelyabinsk State University, Chelyabinsk, Russia.

3. CODING LANGUAGE AND COMPUTER

Fortran 77; IBM PC 386 (C00651/PC386/00).

4. NATURE OF PROBLEM SOLVED

ICOM calculates the transport characteristics of ion radiation for applicaton to radiation protection, dosimetry and microdosimetry, and radiation physics of solids. Ions in the range Z=1-92 are handled. The energy range for protons is 0.001-10,000 MeV. For other ions the energy range is 0.001-100MeV/nucleon. Computed quantities include stopping powers, ranges; spatial, angular and energy distributions of particle current and fluence; spatial distributions of the absorbed dose; and spatial distributions of thermalized ions.

5. METHOD OF SOLUTION

The method of computation is statistical simulation of particle tracks on the framework of the model of condensed collisions with allowance for fluctuations of proton free path, Monte-Carlo estimates on the simulated tracks, analytical formulae. Stopping powers are computed by empirical method, further referred to as 'Ziegler et al'. Some tables of stopping powers for protons are also included. Users can extend the package by adding their own tables of stopping powers.

6. RESTRICTIONS OR LIMITATIONS

None noted.

7. TYPICAL RUNNING TIME

The program is interactive.

8. COMPUTER HARDWARE REQUIREMENTS

ICOM runs on IBM PC 386 or higher.

9. COMPUTER SOFTWARE REQUIREMENTS

The MS Fortran for Power Stations ver. 1.0 compiler was used to create the executables included in the package which runs under either MS DOS or Windows95.

10. REFERENCE

A. Lappa, E. Bigilgeyev, D. Danilov, D. Burmistrov, "ICOM: Calculation of Transport Characteristics of Ion Radiation," Chelyabinsk State University Informal Report (1996).

11. CONTENTS OF CODE PACKAGE

Included are the referenced document and a self-extracting, compressed DOS file which contains source, executables, test cases and documentation on one DS/HD 1.44MB diskette.

12. DATE OF ABSTRACT

June 1997.