Abstract
Weak-decay lifetimes of nuclei are influenced, sometimes dramatically, by the corresponding charge-state of the atom. In storage-cooler rings or in ion-traps weak-decay properties of highly charged ions can be measured for the first time, which has considerable impact for a better understanding of nucleosynthesis in hot stellar plasmas, where the mean atomic charge-state is high, too. As one striking example the first observation of bound-state beta decay is described in detail. Finally, future experiments which may shed light on fundamental questions of astrophysics will be discussed.
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