Accession Number : AD0480163

Title :   PHOTRAN: A GENERAL PURPOSE PHOTON TRANSPORT PROGRAM IN COMPLEX GEOMETRY. VOLUME II: DETAILED PROGRAM DESCRIPTION.

Descriptive Note : Technical rept. Jan 65-Feb 66,

Corporate Author : UNION CARBIDE RESEARCH INST TARRYTOWN NY

Personal Author(s) : Zerby, C. D. ; Agresta, J. ; Ladd, D. E. ; Taylor, R. W. ; Currie, C

Report Date : MAR 1966

Pagination or Media Count : 516

Abstract : The photon transport program using the Monte Carlo technique was developed to study the time-dependent transport of radiation through an arbitrary geometrical configuration constructed of a variety of materials. It has special features for calculating energy deposition as a function of time in surfaces exposed to radiation and for calculating energy deposition, photon flux, electron flux or tissue equivalent detector responses at selected field points. The program can consider photon energies from close to zero to 100 Mev and, therefore, covers both the X-ray and gamma ray energy ranges of interest in most transport problems. The interactions considered in the calculation include coherent and incoherent scattering, photoelectric effect, and pair production. Fluorescence and annihilation radiation can also be included at the user's option. The Program was written in FORTRAN IV. Volume II contains a complete description of all subroutines including flow diagrams and listings. (Author)

Descriptors :   (*TRANSPORT PROPERTIES, PHOTONS), (*PHOTONS, COMPUTER PROGRAMMING), ANNIHILATION RADIATION, PAIR PRODUCTION, PHOTOELECTRIC EFFECT, FLUORESCENCE, MONTE CARLO METHOD, ELECTRONS, ENERGY, X RAYS, GAMMA RAYS, SCATTERING, FLOW CHARTING, RADIATION EFFECTS, SURFACE PROPERTIES.

Subject Categories : Computer Programming and Software
      Nuclear Physics & Elementary Particle Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE