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arXiv 1202.3932nucl-th
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Ca $+$ Ca融合的显微镜研究

Microscopic study of Ca$+$Ca fusion

R. Keser, A. S. Umar, V. E. Oberacker

摘要:

我们研究的融合势垒的反应涉及钙同位素$\mathrm{^{40}Ca}+\mathrm{^{40}Ca}$,$\mathrm{^{40}Ca}+\mathrm{^{48}Ca}$,和$\mathrm{^{48}Ca}+\mathrm{^{48}Ca}$使用微观含时Hartree-Fock理论与密度约束。在这种形式主义的融合壁垒直接从TDHF动力学。我们还研究了$\mathrm{^{40}Ca}+\mathrm{^{48}Ca}$体系的预平衡GDR的激发和相应的$γ$射线发射光谱。融合截面的计算使用来波边界条件的方法。我们研究碰撞能量以及Skyrme相互作用的不同参数化的融合障碍的依赖性。

英文摘要:

We investigate the fusion barriers for reactions involving Ca isotopes $\mathrm{^{40}Ca}+\mathrm{^{40}Ca}$, $\mathrm{^{40}Ca}+\mathrm{^{48}Ca}$, and $\mathrm{^{48}Ca}+\mathrm{^{48}Ca}$ using the microscopic time-dependent Hartree-Fock theory coupled with a density constraint. In this formalism the fusion barriers are directly obtained from TDHF dynamics. We also study the excitation of the pre-equilibrium GDR for the $\mathrm{^{40}Ca}+\mathrm{^{48}Ca}$ system and the associated $γ$-ray emission spectrum. Fusion cross-sections are calculated using the incoming-wave boundary condition approach. We examine the dependence of fusion barriers on collision energy as well as on the different parametrizations of the Skyrme interaction.

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