Mass database

Author: S. George et al. 
Title: Ramsey Method of Separated Oscillatory Fields for High-Precision Penning Trap Mass Spectrometry 
Year: 2007 
Link: http://dx.doi.org/10.1103/PhysRevLett.98.162501

isotope frequency ratio ref. ion ME Isoltrap
(in keV)
ME AME 2003
(in keV)
comment
Ca-38 1.4622576087(162) K-39  -22058.01(0.65) -22059(5) measured as CaF molecule