Bound state M1 transitions in sd-shell nuclei☆

Abstract Nuclear resonance fluorescence experiments with unpolarized and linearly polarized bremsstrahlung and high-resolution Ge(Li) detectors have yielded model-independent values of magnetic dipole excitation strengths to highly excited states in 20,22 Ne, 24,26 Mg, 28,30 Si, and 32,34 S. The measured B ( M 1) values are quenched relative to the j - j limit of the shell model, but are in general agreement with predictions of recent shell-model calculations which treat intra-sd-shell configuration mixing completely.