A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Attenuation of Nitrogen-Capture gamma Rays in Concrete
Shielding experiments were performed to measure the attenuation by concrete slabs of nitrogen-capture gamma radiation. A collimated capture gamma-ray beam was produced by placing a Be3N2 target in the reactor end of a tangential beam hole. A 2-inch diameter beam with an average intensity of approximately 43 mR/h was allowed to impinge at the center of an ordinary concrete-slab shield; this shield was approximately 4-1/2 feet on a side and ranged from 4 to 24 inches thick. The slabs of the shield were rotated to allow measurements at beam angles of incidence of 90, 60, and 45 degrees. The gamma-ray exposure was integrated in a plane behind and parallel to the shield for each shield thickness and angle of incidence. The integrated exposure was determined by summing individual measurements made in a regular pattern in the plane behind the shield. (Author)
Attenuation of Nitrogen-Capture gamma Rays in Concrete
Shielding experiments were performed to measure the attenuation by concrete slabs of nitrogen-capture gamma radiation. A collimated capture gamma-ray beam was produced by placing a Be3N2 target in the reactor end of a tangential beam hole. A 2-inch diameter beam with an average intensity of approximately 43 mR/h was allowed to impinge at the center of an ordinary concrete-slab shield; this shield was approximately 4-1/2 feet on a side and ranged from 4 to 24 inches thick. The slabs of the shield were rotated to allow measurements at beam angles of incidence of 90, 60, and 45 degrees. The gamma-ray exposure was integrated in a plane behind and parallel to the shield for each shield thickness and angle of incidence. The integrated exposure was determined by summing individual measurements made in a regular pattern in the plane behind the shield. (Author)
Attenuation of Nitrogen-Capture gamma Rays in Concrete
W. R. Johnson (author)
1966
59 pages
Report
No indication
English
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