论文标题
$^{44,52} $ ti的核表面附近的密度曲线：$α$集群的指示
Density profiles near nuclear surface of $^{44,52}$Ti: An indication of $α$ clustering
论文作者
论文摘要
我们研究了$α$（$^4 $ he nucleus）聚类的$^{44} $ ti和$^{52} $ ti的度。使用反对称的准准群集模型，可以完全显微镜下生成两种类型的密度分布，即壳和簇模型配置，它们可以在单个方案中描述J-J耦合壳和$α$ -Cluster配置。尽管这两个模型都重现了测量的电荷半径数据，但我们发现与理想的J-J耦合壳模型构型相比，$α$聚类可显着扩散核表面附近的密度曲线。对于$^{44} $ ti来说，效果最为重要，而由于$ 0f_ {7/2} $ orbits在$^{48} $ ca core中的职业，它对$^{52} $ ti的效果最为重要。可以通过测量质子核弹性散射或中间能量的碳靶上的总反应横截面来检测到这种差异。
We investigate the degree of $α$ ($^4$He nucleus) clustering in the ground-state density profiles of $^{44}$Ti and $^{52}$Ti. Two types of density distributions, shell- and cluster-model configurations, are generated fully microscopically with the antisymmetrized quasi-cluster model, which can describe both the j-j coupling shell and $α$-cluster configurations in a single scheme. Despite both the models reproducing measured charge radius data, we found that the $α$ clustering significantly diffuses the density profiles near the nuclear surface compared to the ideal j-j coupling shell model configuration. The effect is most significant for $^{44}$Ti, while it is less for $^{52}$Ti due to the occupation of the $0f_{7/2}$ orbits in the $^{48}$Ca core. This difference can be detected by measuring proton-nucleus elastic scattering or the total reaction cross section on a carbon target at intermediate energies.
