RSIC COMPUTER CODE PSR-097
1. NAME AND TITLE
PAPER 1: Monte Carlo Calculation of Solid Angle and Self-Absorption Factors for an Inclined
Cylindrical Source Viewed by a Cylindrical Detector.
Department of Physics, Ben Gurion University of the Negev, Beersheva, Israel.
3. CODING LANGUAGE AND COMPUTER
Fortran IV; CDC 6600.
4. NATURE OF PROBLEM SOLVED
PAPER 1 calculates the self absorption of gamma radiation in an inclined cylindrical source and,
also, the solid angle of the source subtended by a cylindrical detector. It can be used in any situation
in which a transformation composed of a translation and a rotation between the source and detector
coordinate systems is required.
5. METHOD OF SOLUTION
PAPER 1 uses the Monte Carlo method for determining self-absorption and solid-angle correction
factors in the inclined cylindrical geometry. The Monte Carlo method used in PAPER 1 is extremely
flexible and many geometric configurations can be treated with only trivial modifications of the
6. RESTRICTIONS OR LIMITATIONS
No weighting factor was assigned to the gamma ray as a function of its angle of incidence on the
7. TYPICAL RUNNING TIME
The Monte Carlo method for determining self-absorption and solid-angle correction factors in the
inclined cylindrical geometry requires fairly large amounts of computer time to acquire statistical
accuracy of the order of 1%. A total of 1000 s of computer time was used to run 40,000 case histories
per point on the CDC-6000 computer.
8. COMPUTER HARDWARE REQUIREMENTS
PAPER 1 is operable on the CDC 6600 computer.
9. COMPUTER SOFTWARE REQUIREMENTS
A Fortran IV compiler is required.
"User's Instructions," Informal Note.
Y. S. Horowitz, S. Mordechai and A. Dubi, "Solid-Angle and Self-Absorption Factors for an
Inclined Cylindrical Source Viewed by a Cylindrical Detector," Nucl. Instr. and Meth. 123 (1975) 551-555.
11. CONTENTS OF CODE PACKAGE
Included are the referenced documents and one (1.2MB) DOS diskette which contains the source
12. DATE OF ABSTRACT
KEYWORDS: GAMMA-RAY SOURCE ANALYSIS; SELF ABSORPTION