论文标题
使用相对论的平均场方法,Ar-异位素作为弹丸的核结构与反应动力学之间的相关性
Correlation between the nuclear structure and reaction dynamics of Ar-isotopes as projectile using the relativistic mean-field approach
论文作者
论文摘要
这项理论研究致力于考虑富含中子的光质量30-60AR同位素,弥合核结构与反应动力学之间的差距,并彼此揭示其影响。使用与NL3*参数集的相对论平均场,探测了上述同位素链的几种大量特性,例如结合能,电荷半径,四极变形参数,两个中子分离能和与壳闭合参数的差异性两个中子分离能。为了进行验证,将RMF(NL3*)结果与从有限范围液滴模型(FRDM),具有WS3,WS*参数和可用实验数据的Weizsacker-Skyrme模型进行比较。发现大多数参与的同位素在结构上是巨大的,中子壳的封闭在n = 14、20、40时明显揭示,但在n = 24、28、34处弱显示,n = 24、28、34。根据我们的分析,在32AR和42-58AR中鉴定出核音密度的中心耗竭,并指示它们的半曲子结构,以表明它们的候选结构。有趣的是,这些结果与最近的理论和实验测量数据一致。此外,使用Glauber模型,通过将26-48AR作为弹丸和稳定靶标(例如12C,16o,40CA,90ZR,124,132SN,208PB和304120)确定,确定了反应的横截面。尽管没有304120的稳定性的实验性证据,但它没有预测。 [mod。物理。 Lett。 A {\ bf 27},1250173(2012)]作为稳定的核。在30AR和32AR之间注意到相对较高的横截面值,该值渗透了32AR是所考虑的链中最稳定的同位素。此外,我们注意到,差分横截面和散射角的轮廓受到靶核的质量和弹丸核的入射能量的高度影响。
This theoretical study is devoted to bridging the gap between the nuclear structure and reaction dynamics and unravelling their impact on each other, considering the neutron-rich light mass 30-60Ar isotopes. Using the relativistic mean-field with the NL3* parameter set, several bulk properties such as binding energies, charge radii, quadrupole deformation parameter, two neutron separation energy, and differential two neutron separation energy with the shell closure parameter are probed for the mentioned isotopic chain. For validation, the RMF (NL3*) results are compared with those obtained from the finite range droplet model (FRDM), Weizsacker-Skyrme model with WS3, WS* parameters and the available experimental data. Most of the participating isotopes are found to be prolate in structure and neutron shell closures are conspicuously revealed at N=14, 20, 40 but weakly shown at N=24, 28, 34. From our analysis, a central depletion in the nucleonic density is identified in 32Ar and 42-58Ar, indicating them as possible candidates for a semi-bubble-like structure. Interestingly, these results are consistent with recent theoretical and experimentally measured data. Besides, using the Glauber model, the reaction cross-sections are determined by taking 26-48Ar as projectiles and stable targets such as 12C, 16O, 40Ca, 90Zr, 124,132Sn, 208Pb and 304120. Although there is no experimental evidence for the stability of 304120, it has been predicted in Ref. [Mod. Phys. Lett. A {\bf 27}, 1250173 (2012)] as a stable nucleus. A relatively higher cross-section value is noticed between 30Ar and 32Ar which infers that 32Ar is the most stable isotope among the considered chain. Moreover, we noticed that the profile of the differential cross-sections and scattering angle are highly influenced by the mass of the target nuclei and the magnitude of the incident energy of the projectile nucleus.