Re-Evaluation of the Nuclear Magnetic Octupole Moment of 209Bi

We modified the Hfs92 code of GRASP package in order to describe magnetic octupole hyperfine interaction. To illustrate utility code, we carried out state-of-the-art calculations electronic factors interaction constants for levels ground configuration Bi atom. The nuclear moment 209Bi isotope was extracted by combining old measurements structures 6p34S3/2o [Hull, R.; Brink, G. Phys. Rev. A 1970, 1, 685] and 2P3/2o [Landman, D.A.; Lurio, A. 1330] using atomic-beam magnetic-resonance technique with our theoretical factors. present consistent all available values but one obtained single-particle shell model approximation. This observation supports previous finding that many-body effects, such as core polarization, significantly contribute case 209Bi.