Low-energy enhancement in the magnetic dipole radiation of actinide nuclei
Abstract
We present the first theoretical results of the magnetic dipole (M1) γ-ray strength function (γSF) for actinide nuclei within the shell-model Monte Carlo (SMMC) method. We observe a low-energy enhancement (LEE) in the M1 γSFs of the six nuclei studied here, which serves as the first evidence, theoretical or experimental, that the LEE persists in the actinides. We also identify a scissors mode resonance in all six nuclei, which we compare with recent Oslo-method experiments.
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