High-precision mass measurement of doubly magic ${}^{208}$Pb

Kathrin Kromer, Chunhai Lyu, Menno Door +10

The absolute atomic mass of ${}^{208}$Pb has been determined with a fractional uncertainty of $7\times 10^{-11}$ by measuring the cyclotron-frequency ratio $R$ of ${}^{208}$Pb${}^{41+}$…