Energy response of Landsverk ionization chambers to monoenergetic gamma rays /

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 (Co-60, Cs-137, Hg-203, and Ce-141) was calibrated with a scintillation spectrometer. The angular response of the chambers for energies of 1.25 Mev, 662 kev, 270 kev, and 145 kev, respectively, was measured in one quandrant. The effect of wall thickness on the energy response was also investigated.Ntis: ad287202.Accession No.: 56525."7 May 1962."Includes bibliographical references (page 15).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 (Co-60, Cs-137, Hg-203, and Ce-141) was calibrated with a scintillation spectrometer. The angular response of the chambers for energies of 1.25 Mev, 662 kev, 270 kev, and 145 kev, respectively, was measured in one quandrant. The effect of wall thickness on the energy response was also investigated.Mode of access: Internet