Penning-Trap Mass Measurement of Helium-4

Sangeetha Sasidharan, Olesia Bezrodnova, Sascha Rau +3

Light-Ion Trap (LIONTRAP), a high-precision Penning-trap mass spectrometer, was used to determine the atomic mass of ${}^4$He. Here, we report a 12 parts-per-trillion measurement o…