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arXiv · 2511.11565

Low-energy enhancement in the magnetic dipole radiation of actinide nuclei

C. Rodgers·D. DeMartini·Y. Alhassid
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Abstract

We present the first theoretical results of the magnetic dipole (M1) $\gamma$-ray strength function ($\gamma$SF) for actinide nuclei within the shell-model Monte Carlo (SMMC) method. We observe a low-energy enhancement (LEE) in the M1 $\gamma$SFs 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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C. Rodgers, D. DeMartini, Y. Alhassid. 2025-11-14. Low-energy enhancement in the magnetic dipole radiation of actinide nuclei. https://arxiv.org/abs/2511.11565

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