Effects of Isoscalar and Isovector Magnetic Multipole Polarizations on Single-Particle Magnetic Transitions

21 July 1975

journal article
research article
Published by American Physical Society (APS) in Physical Review Letters

Vol. 35 (3), 148-151
https://doi.org/10.1103/physrevlett.35.148

Abstract

Isoscalar and isovector components of

M 2

and

M 4

transition matrix elements are obtained by comparing stretched single-(quasi)proton transitions with stretched single-(quasi)neutron transitions. Both the isoscalar and the isovector components are found to be smaller by factors

\frac{g^{eff}}{g} ≃ 0.2 - 0.3

than the single-quasiparticle values. The reductions are accounted for, respectively, in terms of destructive effects of the isoscalar magnetic (spin) and the isovector magnetic (isospin-spin) core polarizations.

Keywords

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