Increase in the probability of allowed electron beta decays in a superstrong magnetic field

The effect of a superstrong constant uniform magnetic field, H ? H ₀ = cm _e ² e ³/?³, on the probability of allowed electron beta decays is considered. It is shown that, for an atom whose nucleus is β ^?-active and which is placed in a superstrong magnetic field, the β ^?-decay probability increases owing to the enhancement of β ^? decay to a bound state of the electron. The effect is operative both for the nucleus of a fully ionized atom and for the nucleus of a neutral atom.