Accession Number : ADA179816
Title : Wall Attenuation and Scatter Characteristics of Ionization Chambers at Armed Forces Radiobiology Research Institute.
Descriptive Note : Technical rept.,
Corporate Author : ARMED FORCES RADIOBIOLOGY RESEARCH INST BETHESDA MD
Personal Author(s) : Dooley,M. ; Eagleson,D. M. ; Mohaupt,T. H.
Report Date : DEC 1986
Pagination or Media Count : 24
Abstract : Ion chambers are used at AFFRI as the primary method of dosimetry. These chambers are calibrated with a cobalt-60 radiation source and are used for dose measurements in high-energy electron, mixed neutron,/gamma, and cobalt-60 radiation fields. Radiation attenuation and scattering in the ion chamber wall depends on the radiation field and affects the chamber response. A wall correction factor, KW, is used to help eliminate this source of error. The wall correction factor was experimentally determined for cobalt-60 and typical AFRRI mixed neutron/gamma fields. Keywords: calibration; Radiation dosage; Radiation simulation tests.
Descriptors : *IONIZATION CHAMBERS, *ATTENUATION, *DOSIMETRY, SOURCES, MEASUREMENT, RADIATION, SCATTERING, HIGH ENERGY, ELECTRON ENERGY, RESPONSE, RADIATION ATTENUATION, ERRORS, MILITARY RESEARCH, DOSAGE, GAMMA RAYS, WALLS, MIXING, CALIBRATION, CHAMBERS, NEUTRONS, RADIATION DOSAGE, CORRECTIONS, RADIOBIOLOGY, RADIATION SIMULATION TESTS.
Subject Categories : NUCLEAR INSTRUMENTATION
Distribution Statement : APPROVED FOR PUBLIC RELEASE