On the ß- decay in the Li-8 and Li-9 atoms

The nuclear ß- decay from the ground and some excited states of the three-electron Li-8 and Li-9 atoms is considered. The final state probabilities for the arising Be+ ion are determined numerically with the use of highly accurate bound state wave functions of the Li atom and Be+ ion. The probability of electron ionization during the nuclear ß- decay of the Li atom is evaluated numerically. We also discuss a possibility to observe the double ß- decay by using the known values of the final state probabilities for the regular nuclear ß- decay.

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