Investigation of the -Rays from Polonium

Abstract

A method of standardizing polonium sources by measurement of the number of γ-rays is described. The hard γ-radiation of 0.773 MeV. energy emitted in the decay of 210Po has been found to have an intensity of 1.8±0.14 × 10-5 quanta per α-particle The internal conversion of this line to the extent of 6.7±1.7% gives rise to K X-radiation of lead. No other soft radiation was detected. The decay scheme of polonium is discussed.