Additional Adjoint Monte Carlo Studies of the Shielding of Concrete Structures against Initial Gamma Radiation.
Abstract
The adjoint Monte Carlo method previously developed by MAGI has been applied to the calculation of intial 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. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 01, 1975
- Accession Number
- ADA014504
Entities
People
- Martin O. Cohen
- Mendel Beer
Organizations
- Mathematical Applications Group