Precision hfs of Cs( = 1.63 m) by ABMR

Pinard, J.*; Duong, H. T.*; Marescaux, D.*; Stroke, H. H.*; Redi, O.*; Gustafsson, M.*; Nilsson, T.*; Matsuki, S.*; Kishimoto, Yasuaki*; Kominato, K.*; et al.

Nuclear Physics A, 753(1-2), p.3 - 12, 2005/05

https://doi.org/10.1016/j.nuclphysa.2005.01.036

The hfs separation of Cs( m) in the 6s S ground state was obtained in a precision measurement near zero magnetic field by means of atomic beam magnetic resonance with laser optical pumping on-line with the CERN-PSB-ISOLDE mass separator. The result, MHz, corrects significantly a previous published value from a high-field experiment. With our result, the precision of the nuclear magnetic moment, Cs), is now limited by the influence of extended nuclear structure on the hfs (the Bohr-Weisskopf effect).