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arXiv · 1512.00431

Lifetime measurements of nuclei in few-electron ions

Thomas Faestermann
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Abstract

In this review lifetime measurements of ions with at most two electrons are summarized. Such highly ionized systems have been studied - until now - only in the Experimental Storage Ring of the GSI in Darmstadt. Emphasis is put on decays via the weak interaction. The first observations of beta-decay into bound atomic states are described as well as its time mirrored counterpart, the electron-capture decay. In the latter case the decays of hydrogen- and helium-like ions are compared with a surprising result. Further on, the observation of sinusoidal modulations of the decay rate in two-body decays is summarized. As a possible cause an interference due to the emission of neutrinos with different rest mass is discussed.

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Thomas Faestermann. 2015-12-01. Lifetime measurements of nuclei in few-electron ions. https://doi.org/10.1088/0031-8949%2F2015%2Ft166%2F014003

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