On the emission of the fast $\delta -$electrons during nuclear ${\beta }^{-}$-decay in few-electron atoms

Abstract

We discuss a possibility to observe fast secondary electrons ($\delta -$electrons) during nuclear ${\beta }^{-}$-decay in few-electron atoms and ions. Formulas for the corresponding probabilities and explicit expression for the energy spectrum of $\delta -$electrons are derived in the closed analytical forms.