Long Range Alpha-Particles Emitted in Connection with Fission. Preliminary Report

Abstract

Alpha-particles are emitted in coincidence (i.e., within 5\ifmmode\times\else\texttimes\fi{}${10}^{\ensuremath{-}6}$ sec.) with fission by ${\mathrm{U}}^{235}$ and ${\mathrm{Pu}}^{239}$. The maximum range observed corresponds to an energy of 16 Mev. About one alpha per 250 fissions is emitted by ${\mathrm{U}1}^{235}$ and one alpha per 500 fissions by ${\mathrm{Pu}}^{239}$. The investigation is being continued.