Accession Number : AD0847313

Title :   Gamma Radiation Source Calibration Using Active Spaceflight Tissue-Equivalent Dosimeters.

Descriptive Note : Technical rept. 1 Aug 67-1 May 68,

Corporate Author : AIR FORCE WEAPONS LAB KIRTLAND AFB NM

Personal Author(s) : Schneider, Marion F. ; Ainsworth, Glenn C.

Report Date : DEC 1968

Pagination or Media Count : 35

Abstract : A rapid and highly accurate method of calibrating gamma radiation sources such as cesium-137 and cobalt-60 emitters has been devised using specially designed tissue equivalent ionization chambers operated as Bragg-Gray dosimeters. Their high accuracy, long life, excellent reproducibility of radiation response, and sealed, pressurized sensors make them ideally suited for calibration of standard radiation sources. The accuracy obtained in the calibration of two gamma radiation sources over the range 2.0 millirad/hour to 300 rad/hour was found to be equivalent to the accuracies obtained with an r-Meter. (Author)

Descriptors :   (*IONIZATION CHAMBERS, DOSIMETERS), (*GAMMA COUNTERS, CALIBRATION), RADIOACTIVE ISOTOPES, GAMMA RAYS, SOURCES, ACCURACY, SPACEBORNE, COBALT, CESIUM.

Subject Categories : Radiobiology
      Nuclear Instrumentation

Distribution Statement : APPROVED FOR PUBLIC RELEASE