Some Aspects on the Magnetic-Dipole Moments of States in Near-Spherical Nuclei

Abstract

In this chapter, the recently measured magnetic-dipole moments of states in spherical nuclei are discussed in terms of predictions of current nuclear models. It reviews the recent advances in the technique of measuring the g-factors of nuclear states with lifetimes of the order of a few milliseconds to a picosecond. The measured moments in several states in and around 208 Pb can be easily explained in terms of simple shell model considerations using effective moments from 209 Bi and 207 Pb. The chapter examines the core-excitation model in terms of its success in predicting the known static moments of states in some odd A nuclei. The systematics of the empirical data on the g-factors of the first 2 + states in doubly-even spherical nuclei are discussed in this chapter in terms of current microscopic theories. The chapter reviews the magnetic moments and beta-decay Gamow-Teller matrix elements in mirror nuclei.