Isoscalar transitions and alpha cluster structures in heavy nuclei
Isoscalar transitions and alpha cluster structures in heavy nuclei
复制标题
重核中的等标量跃迁和 α 簇结构
DOI：
10.1140/epja/s10050-021-00372-4
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发表时间：
2021
期刊：
影响因子：
--
通讯作者：
Ebata S.
中科院分区：
文献类型：
--
作者：
Ito M.;Nakamoto R.;Nakao M.;Okuno T.;Ebata S.
用宏观簇模型分别研究了等标量单极子跃迁和偶极子跃迁在中等和较重的系统中，如核和偶核。理论计算表明，在激发能低于10兆电子伏特时，单极子和偶极子跃迁强度显著增强。这些低洼增强是由团簇和残核的相对运动激发引起的，跃迁矩阵元素的大小与单核子激发相当，而单核子激发所需的激发能量要比单核子激发所需的能量高得多。利用聚类模型计算了一种核废料的电偶极子强度。讨论了单极子跃迁和偶极子跃迁在核废料核嬗变中的应用。
Isoscalar monopole and dipole transitions are investigated in the medium and heavier systems, such asand evennuclei by employing the macroscopiccluster model ofand, respectively. Theoretical calculations predict that the strengths of the monopole and dipole transitions are strongly enhanced in the excitation energy below 10 MeV. These low-lying enhancements are induced by the excitation in the relative motion of thecluster and the residual nucleus, and the magnitudes of the transition matrix element are comparable to the single nucleon excitation, which requires much higher excitation energy than the energy for theexcitation. The electric dipole strength is also calcluated forwith the cluster model of, which is a kind of nuclear waste. The application of the monopole and dipole transitions involving theemission to the nuclear transmutation of the nuclear wastes is also discussed.