Dipole response of deformed halo nuclei $^{31}$Ne and $^{37}$Mg

{getToc} $title={Table of Contents}

Summary

The paper discusses the electric dipole response of deformed halo nuclei 31Ne and 37Mg using a deformed Woods-Saxon potential. The configuration dependence of the E1 strength near the neutron threshold is pointed out, and the halo configurations [321]3/2 and [330]1/2 in 31Ne and [321]1/2 in 37Mg are found to contain large amplitudes of halo p-shell orbits, enhancing the threshold strength.

Highlights

• The deformed Woods-Saxon potential is used to study the electric dipole response of deformed halo nuclei 31Ne and 37Mg.
• The configuration dependence of the E1 strength near the neutron threshold is investigated.
• Halo configurations [321]3/2 and [330]1/2 in 31Ne and [321]1/2 in 37Mg contain large amplitudes of halo p-shell orbits.
• The threshold strength is significantly enhanced by the halo configurations.
• The integrated E1 strength is larger for the halo configurations compared to non-halo configurations.
• The pure single-particle transition from a halo p-wave state has a larger E1 strength compared to the deformed wave function.
• The deformation effect quenches the peak of the E1 strength distribution.

Key Insights

• The deformed Woods-Saxon potential is an effective tool for studying the electric dipole response of deformed halo nuclei, allowing for the investigation of configuration dependence and the effects of halo orbits on the E1 strength.
• The halo configurations [321]3/2 and [330]1/2 in 31Ne and [321]1/2 in 37Mg are found to have a significant impact on the E1 strength near the neutron threshold, resulting in a substantial enhancement of the threshold strength.
• The integrated E1 strength is a useful measure for comparing the effects of different configurations on the electric dipole response, with halo configurations exhibiting larger integrated E1 strengths compared to non-halo configurations.
• The pure single-particle transition from a halo p-wave state provides a useful benchmark for understanding the effects of deformation on the E1 strength, highlighting the quenching effect of deformation on the peak of the E1 strength distribution.
• The study of electric dipole response in deformed halo nuclei provides valuable insights into the interplay between nuclear structure and reaction dynamics, shedding light on the complex behavior of exotic nuclei.
• The use of a deformed Woods-Saxon potential allows for a detailed investigation of the role of halo orbits in shaping the electric dipole response, highlighting the importance of considering the effects of deformation in nuclear structure calculations.
• The comparison between the deformed wave function and the pure single-particle transition from a halo p-wave state highlights the importance of considering the effects of deformation on the E1 strength, demonstrating the need for a nuanced understanding of the interplay between nuclear structure and reaction dynamics.

Mindmap

If MindMap doesn't load, go to the Homepage and visit blog again or Switch to Android App (Under Development).

Citation

Lu, X., Sagawa, H., & Zhou, S.-G. (2024). Dipole response of deformed halo nuclei $^{31}$Ne and $^{37}$Mg (Version 1). arXiv. https://doi.org/10.48550/ARXIV.2412.20479