论文标题
融合反应的微观研究$^{40,48} \ MATHRM {Ca}+{}^{78} \ Mathrm {ni} $以及张力力的效果
Microscopic study on fusion reactions $^{40,48}\mathrm{Ca}+{}^{78}\mathrm{Ni}$ and the effect of tensor force
论文作者
论文摘要
我们提供了$^{40,48} $ ca和$^{78} $ ni之间的融合反应的微观描述。使用密度约束（DC）时间依赖性Hartree-fock（TDHF）方法获得核能电位，并通过传入的波边界条件方法计算融合横截面。通过在几个选定的入射能进行DC-TDHF计算，可以获得两个系统的核会内电位，并揭示融合屏障的能量依赖性。张力力对$^{48} \ Mathrm {Ca}+{}^{78} \ Mathrm {Ni} $的影响比$^{40} {40} \ Mathrm {Ca}+{78}^{78}^{78}^{NI} $ {ni更为明显。通过比较$^{40} \ Mathrm {Ca}+{}^{78} \ Mathrm {ni} $和$^{48} \ Mathrm {Ca}+{Ca}+{}+{}^78}^{78}^subrm {ni} $ Enlant for TORMENT for TORMENT以前，找到了，可以通过$^{40} \ Mathrm {Ca}+{}^{78} \ Mathrm {Ni} $的狭窄宽度来解释，而障碍高度和位置非常接近。张量力抑制两个系统的两个系统的子熔断器融合横截面。
We provide a microscopic description of the fusion reactions between $^{40,48}$Ca and $^{78}$Ni. The internuclear potentials are obtained using the density-constrained (DC) time-dependent Hartree-Fock (TDHF) approach and fusion cross sections are calculated via the incoming wave boundary condition method. By performing DC-TDHF calculations at several selected incident energies, the internuclear potentials for both systems are obtained and the energy-dependence of fusion barrier are revealed. The influence of tensor force on internuclear potentials of $^{48}\mathrm{Ca}+{}^{78}\mathrm{Ni}$ is more obvious than those of $^{40}\mathrm{Ca}+{}^{78}\mathrm{Ni}$. By comparing the calculated fusion cross sections between $^{40}\mathrm{Ca}+{}^{78}\mathrm{Ni}$ and $^{48}\mathrm{Ca}+{}^{78}\mathrm{Ni}$, an interesting enhancement of sub-barrier fusion cross sections for the former system is found, which can be explained by the narrow width of internuclear potential for $^{40}\mathrm{Ca}+{}^{78}\mathrm{Ni}$ while the barrier heights and positions are very close to each other. The tensor force suppresses the sub-barrier fusion cross sections of both two systems.
