A MONTE CARLO CODE FOR GAMMA RAY TRANSMISSION THROUGH LAMINATED SLAG SHIELDS
An IBM 704 Monte Carlo code for computing the transmission of monoenergetic and monodirectional gamma rays by a multilayered slab geometry shield is described. The main output data are the total energy current and flux. The associated energy spectra of each accompanied by their standard deviations are also obtained, but at lesser accuracy. Extensive use is made of variance reduction techniques, including use of calculated first collision points, a modified form of the exponential transformation, and statistical estimation of the transmission after each collision. Importance sampling is used for choosing the recoil energy and the change in azimuthal angle following collision. Results are quoted for a Compton scattering medium and for a selected group of one, two, and three slab leadwater shields. Comparisons are made with infinite medium results corrected in a plausible manner for edge effects. They are interpreted as permitting the use of an empirical formula due to M. Kalos for twoslab lead- water shields for a large number of situations of interest. The energy spectra are also discussed. (auth)
- Research Organization:
- TRG, Inc., New York
- NSA Number:
- NSA-13-009119
- OSTI ID:
- 4292881
- Report Number(s):
- WADC-TR-58-80; AD-203641
- Country of Publication:
- United States
- Language:
- English
Similar Records
A MONTE CARLO CALCULATION OF NEUTRON PENETRATIONS THROUGH IRON SLABS. Nuclear Report 82
A MONTE CARLO CALCULATION OF GAMMA RAY PENETRATIONS THROUGH IRON SLABS
Related Subjects
ANGULAR DISTRIBUTION
COMPTON EFFECT
COMPUTERS
CURRENTS
EFFICIENCY
ENERGY
EQUATIONS
ERRORS
GAMMA RADIATION
IBM 704
INTERACTIONS
LAYERS
LEAD
MATHEMATICS
MONTE CARLO METHOD
NUMERICALS
PERFORMANCE
PHYSICS AND MATHEMATICS
PROGRAMMING
RECOILS
SAMPLING
SCATTERING
SHIELDING
SLAGS
SPECTRA
STATISTICS
WATER