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 of the mass of a ^{4}He^{2+} ion, m(^{4}He^{2+})=4.001 506 179 651(48) u.
View Article and Find Full Text PDFVopr Kurortol Fizioter Lech Fiz Kult
July 1981
Vopr Kurortol Fizioter Lech Fiz Kult
October 1972