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arXiv 0709.3972nucl-th
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用密度约束含时Hartree-Fock方法计算$^{64}$ Ni+ $^{64}$ Ni熔合反应

$^{64}$Ni+$^{64}$Ni fusion reaction calculated with the density-constrained time-dependent Hartree-Fock formalism

A. S. Umar, V. E. Oberacker

摘要:

利用密度约束的含时Hartree-Fock(TDHF)方法研究了$^{64}$ Ni+ $^{64}$ Ni体系的聚变反应.在这种形式主义的融合壁垒直接从TDHF动力学。此外,我们将轻微变形(扁圆)$^{64}$ Ni核由于动态库仑激发的入口通道排列。我们表明,对齐导致的融合势垒分布,并改变了天真的图片定义哪些能量实际上是子势垒。我们还表明,核心极化效应可以发挥重要作用,在融合截面计算。

英文摘要:

We study fusion reactions of the $^{64}$Ni+$^{64}$Ni system using the density-constrained time-dependent Hartree-Fock (TDHF) formalism. In this formalism the fusion barriers are directly obtained from TDHF dynamics. In addition, we incorporate the entrance channel alignments of the slightly deformed (oblate) $^{64}$Ni nuclei due to dynamical Coulomb excitation. We show that alignment leads to a fusion barrier distribution and alters the naive picture for defining which energies are actually sub-barrier. We also show that core polarization effects could play a significant role in fusion cross section calculations.

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