Phys.Rev.Lett. 121, 213001 (2018)

M.S.Safronova, S.G.Porsev, M.G.Kozlov, J.Thielking, M.V.Okhapkin, P.Glowacki, D.M.Meier, E.Peik

Nuclear Charge Radii of ²²⁹Th from Isotope and Isomer Shifts

NUCLEAR MOMENTS ²²⁹Th, ²³²Th; measured frequencies; deduced hyperfine structure, isotopic shift, r.m.s. radii, mean-square radius change between ²²⁹Th and its low-lying isomer ^229mTh. Comparison with theoretical calculations.

doi: 10.1103/PhysRevLett.121.213001