On the Recoil of the Nucleus in Beta-Decay ofKr88.

Abstract

The maximum energy and the average energy of the recoil atoms from ${\mathrm{Kr}}^{88}$, which emits $\beta$- and probably also $\gamma$-rays, have been determined to 51.5±2 ev and 29±1 ev, respectively. The maximum recoil energy agrees closely with the maximum energy 2.4 Mev for the $\beta$-particles.