Additional adjoint Monte Carlo studies of the shielding of concrete structures against initial gamma radiation. Final report

Technical Report · Sat Feb 01 00:00:00 EST 1975

OSTI ID:7187159

Beer, M; Cohen, M O

The adjoint Monte Carlo method previously developed by MAGI has been applied to the calculation of initial radiation dose due to air secondary gamma rays and fission product gamma rays at detector points within buildings for a wide variety of problems. These provide an in-depth survey of structure shielding effects as well as many new benchmark problems for matching by simplified models. Specifically, elevated ring source results were obtained in the following areas: doses at on-and off-centerline detectors in four concrete blockhouse structures; doses at detector positions along the centerline of a high-rise structure without walls; dose mapping at basement detector positions in the high-rise structure; doses at detector points within a complex concrete structure containing exterior windows and walls and interior partitions; modeling of the complex structure by replacing interior partitions by additional material at exterior walls; effects of elevation angle changes; effects on the dose of changes in fission product ambient spectra; and modeling of mutual shielding due to external structures. In addition, point source results yielding dose extremes about the ring source average were obtained. (auth)

• Research Organization: Mathematical Applications Group, Inc., Elmsford, NY (USA)
• DOE Contract Number: DCPA01-74-C-0221
• OSTI ID: 7187159
• Report Number(s): AD-A-014504; MR-7043
• Resource Relation: Other Information: Errata sheet inserted
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BUILDINGS
SHIELDING
GAMMA RADIATION
ATTENUATION
CONCRETES
DOSE RATES
ENERGY DEPENDENCE
FISSION PRODUCTS
LEVELS
MONTE CARLO METHOD
PHOTON TRANSPORT
RADIATION DOSES
RINGS
SENSITIVITY
WALLS
WINDOWS
BUILDING MATERIALS
DOSES
ELECTROMAGNETIC RADIATION
IONIZING RADIATIONS
ISOTOPES
MATERIALS
NEUTRAL-PARTICLE TRANSPORT
OPENINGS
RADIATION TRANSPORT
RADIATIONS
RADIOACTIVE MATERIALS
654002* - Radiation & Shielding Physics- Shielding Calculations & Experiments- (-1987)