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 : *ATTENUATION , *DOSIMETRY , *IONIZATION CHAMBERS , CALIBRATION , CHAMBERS , CORRECTIONS , DOSAGE , ELECTRON ENERGY , ERRORS , GAMMA RAYS , HIGH ENERGY , MEASUREMENT , MILITARY RESEARCH , MIXING , NEUTRONS , RADIATION , RADIATION ATTENUATION , RADIATION DOSAGE , RADIATION SIMULATION TESTS , RADIOBIOLOGY , RESPONSE , SCATTERING , SOURCES , WALLS
Subject Categories : Nuclear Instrumentation
Distribution Statement : APPROVED FOR PUBLIC RELEASE