Orbital electron capture decay of hydrogen- and helium-like 142Pm ions
2009
Abstract The β + and orbital electron-capture decays of stored hydrogen- and helium-like 142 Pm ions have been measured. So far, such measurements have been performed with only one nucleus, namely 140 Pr. The electron-capture decay constant of hydrogen-like 142 Pm 60+ ions is about 50% larger than that of helium-like 142 Pm 59+ ions, which is in excellent agreement with the previous measurements in 140 Pr ions and with new theoretical predictions.
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