TRANSMISSION OF SCATTERED $gamma$-RAYS THROUGH CONCRETE AND IRON SLABS

Journal Article · Thu Jun 01 04:00:00 EDT 1961 · Health Physics (England)

DOI:https://doi.org/10.1097/00004032-196105000-00004· OSTI ID:4027344

Raso, D J

The penetration of gamma rays undergoing one or more scatterings in concrete and iron of various slab thicknesses (3.75 to 60.0 g/cm/sup 2/) was investigated by the Monte Carlo technique. Radiation with energy of 350, 660, and 1250 kev and also the gamma spectra produced by the products (omitting volatile materials) of U/sup 235/ fission at 1.12 and 23.8 hr after fission were assumed to be incident on the medium at angles of cos theta /sub 0/ = 0, 0.25, 0.50, 0.75, and 1.0. The case histories of 5000 photons were followed on the IBM 704 digital computer. The information obtained included: number and energy transmitted, the energy distribution of the transmitted radiation integrated over all directions, the angular distribution integrated over all energies, and the angular distribution of the transmitted energy and transmitted "dose." These computed quantities refer to transmitted current, and an approximation is given for determining flux density. Comparisons are made with other theories and an experiment performed at USNRDL. (auth)

• Research Organization: Technical Operations Inc., Burlington, Mass.
• Sponsoring Organization: USDOE
• NSA Number: NSA-15-024461
• OSTI ID: 4027344
• Journal Information: Health Physics (England), Journal Name: Health Physics (England) Vol. Vol: 5; ISSN HLTPA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ANGULAR DISTRIBUTION
CONCRETES
ENERGY RANGE
FISSION
GAMMA RADIATION
IBM 704
IRON
KEV RANGE
MONTE CARLO METHOD
PHYSICS
PLATES
RADIATION DOSES
RADIATIONS
SCATTERING
SPECTRA
URANIUM 235