Accession Number : AD0287202

Title :   ENERGY RESPONSE OF LANDSVERK IONIZATION CHAMBERS TO MONOENERGETIC GAMMA RAYS

Corporate Author : NAVAL RADIOLOGICAL DEFENSE LAB SAN FRANCISCO CALIF

Personal Author(s) : LYNN,R.L. ; DAGRAGNANO,V.L.

Report Date : 07 MAY 1962

Pagination or Media Count : 1

Abstract : An energy response calibration of Landsverk L-65, L-81, and L-83 pocket chambers was carried out using monoenergetic gamma-emitting radioisotopes. Since the intensity of the sources was low, the pocket chambers were used as ratemeters and the ionization current was read on a vibrating-reed electrometer. The dose rate of each isotope (Co60, Cs137, Hg203, and Ce141) was calibrated with a scintillation spectrometer. The angular response of the chambers for the energies of 1.25 Mev, 662 ev, 279 kev, and 145 kev, respectively, was measured in one quadrant. The effect of wall thickness on the energy response was also investigated. (Author)

Descriptors :   *CALIBRATION, *IONIZATION CHAMBERS, *ISOTOPES, GAMMA RAYS, INTENSITY, MEASUREMENT, SCINTILLATION COUNTERS

Distribution Statement : APPROVED FOR PUBLIC RELEASE