First measurements of the 53Ca magnetic moment and the 53,54Ca charge radii show a nearly pure single-particle 2p1/2 neutron state and a sharp radius jump at 54Ca, indicating a robust N=32 shell closure in calcium.
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Laser spectroscopy illuminates the $N=32$ shell closure
First measurements of the 53Ca magnetic moment and the 53,54Ca charge radii show a nearly pure single-particle 2p1/2 neutron state and a sharp radius jump at 54Ca, indicating a robust N=32 shell closure in calcium.