Accession Number : ADD001304

Title :   Radiation Absorber and Intensity Collimator Unit.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C

Personal Author(s) : Hall,Leland S ; Heffan,Howard

Report Date : 27 Aug 1974

Pagination or Media Count : 6

Abstract : The patent relates to a radiation absorber which automatically and/or digitally controls the intensity of a radiation source by providing an absorbent measured fixed path for the beam to travel, by the use of a cylindrically helically shaped step wedge to control the intensity of the radiation emitted from the radiation source. By changing the angle of the cylinder, the thickness of the material in the path of the beam emitted from the source changes, thus changing the flux of the beam.

Descriptors :   *Gamma rays, *Nuclear radiation, *Absorbers(Equipment), *Patents, *Collimators, Automatic, Intensity, Digital systems

Subject Categories : Nuclear Instrumentation

Distribution Statement : APPROVED FOR PUBLIC RELEASE