1. NAME AND TITLE
E-DEP-1: Heavy Ion Energy Deposition Code System.
Version P5.00, packaged by RSIC December 1986, employees improved stopping powers and
includes several minor corrections and improvements from the previous CDC version.
Naval Research Laboratory, Washington, D.C.
3. CODING LANGUAGE AND COMPUTER
FORTRAN 77; Vax.
4. NATURE OF PROBLEM SOLVED
E-DEP-1 calculates the distribution of energy deposited in collisions for a beam of heavy ions
coming to rest in an amorphous target material of up to six atomic components.
5. METHOD OF SOLUTION
The stopping power cross sections for elastic atomic collisions in Version P5.00 are those of
Wilson, et al. (1) based on a realistic interatomic potential. The original program uses the inelastic
stopping law of Lindhard, et al.(2). In the present work, the phenomenological fit given by Land
and Brennan (3) partially replaces this approximation.
6. RESTRICTIONS OR LIMITATIONS
7. TYPICAL RUNNING TIME
The sample case executes in less than a minute wall clock time on the Vax 8600.
8. COMPUTER HARDWARE REQUIREMENTS
This version of E-DEP-1 runs on Vax 11/780 and 8600 computers.
9. COMPUTER SOFTWARE REQUIREMENTS
E-DEP-1 runs under the VMS operating system using both DEC Fortran 66 and Fortran 77
compilers. RSIC ran the test case using VMS Version 4.5 and Fortran 77 compiler release 4.5
a. Included in the package:
C. M. Davisson and I. Manning, "New Version of the Energy-Deposition Code E-DEP-1:
Better Stopping Powers," NRL 8859 (October 6, 1986).
b. Background information:
(1) W. D. Wilson, L. G. Haggmark, and J. P. Biersack, Physics Review B15, 2458 (1977).
(2) J. Lindhard, M. Scharff and H. E. Schiott, Danske Videnskab. Selskab 33 No. 14 (1963).
(3) D. J. Land and J. G. Brennan, Atomic Data and Nuclear Data Tables 22, 235 (1978).
11. CONTENTS OF CODE PACKAGE
Included are the referenced document (10.a) and one (1.2MB) DOS diskette which contains
source code and sample problem input.
12. DATE OF ABSTRACT
November 1981; reviewed March 1982, January 1985; revised December 1986.
KEYWORDS: HEAVY IONS; RADIATION DAMAGE; ENERGY DEPOSITION