Nuclear shape transitions and elastic magnetic electron scattering

B. Hernandez, P. Sarriguren, O. Moreno, E. Moya de Guerra, D. N. Kadrev, A. N. Antonov
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引用次数: 5

Abstract

Backward elastic electron scattering from odd-A nuclear targets is characterized by magnetic form factors containing precise information on the nuclear structure. We study the sensitivity of the magnetic form factors to structural effects related to the evolution and shape transitions in both isotopic and isotonic chains. Calculations of magnetic form factors are performed in the plane-wave Born approximation. The nuclear structure is obtained from a deformed self-consistent mean-field calculation based on a Skyrme HF+BCS formalism. Collective effects are included in the cranking approximation, whereas nucleon-nucleon correlations are taken into account in the coherent density fluctuation model. The evolution of the magnetic form factors is found to exhibit signatures of shape transitions that show up in selected isotopic and isotonic chains involving both stable and unstable nuclei. Several cases are identified as suitable candidates for showing such fingerprints of shape transitions. A new generation of electron scattering experiments involving electron-radioactive beam colliders will be available in the near future, leading to a renewed interest in this field.
核形状跃迁和弹性磁电子散射
奇a核目标的后向弹性电子散射具有磁性形式因子的特征,其中包含核结构的精确信息。我们研究了磁性形状因子对与同位素链和等渗链演化和形状转变相关的结构效应的敏感性。在平面波玻恩近似中进行了磁性形状因子的计算。通过基于Skyrme HF+BCS形式的变形自洽平均场计算获得了核结构。在曲柄近似中包含了集体效应,而在相干密度涨落模型中则考虑了核子-核子关联。发现磁性形状因子的演化表现出形状转变的特征,这些特征出现在涉及稳定核和不稳定核的选定同位素和等渗链中。几个案例被确定为显示这种形状转换指纹的合适候选者。在不久的将来,涉及电子放射性束流对撞机的新一代电子散射实验将可用,从而重新引起对该领域的兴趣。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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