Accession Number:

AD0643754

Title:

ATTENUATION OF NITROGEN-CAPTURE GAMMA RAYS IN CONCRETE,

Descriptive Note:

Corporate Author:

VIRGINIA UNIV CHARLOTTESVILLE

Personal Author(s):

Report Date:

1966-11-01

Pagination or Media Count:

59.0

Abstract:

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 mRh was allowed to impinge at the center of an ordinary concrete-slab shield this shield was approximately 4-12 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

Subject Categories:

  • Ceramics, Refractories and Glass
  • Nuclear Radiation Shielding, Protection and Safety

Distribution Statement:

APPROVED FOR PUBLIC RELEASE