Hyperfine Structure andgJValue of theF924andP524Levels ofCu63andCu65

Abstract
The hyperfine structure of the (3d94s4p) F924 and P524 metastable levels in Cu63 and Cu65 have been measured by the atomic-beam magnetic-resonance method. When corrected for second-order interactions with neighboring fine-structure levels from the (3d94s4p) configuration, the hfs interaction constants are