The distribution of ionization along a beam of γ-radiation and the determination of radiation dose with normal ionization chambers

Abstract

It was established that the ionization effect, measured in normal ionization chambers for determining the dose in a region of γ-radiation, must be referred to a point in space, displaced by a distance of about$0.35\tfrac{{K_{\max } }}{P}$ from the center of the measuring electrode of the chamber towards the source. The corrections for displacement of the measuring volume for the γ-radiation of Cs¹³⁷ and Co⁶⁰, respectively, equal 0.996 and 0.992.