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首页> 外文期刊>Physical review, C >Time-dependent Hartree-Fock plus Langevin approach for hot fusion reactions to synthesize the Z=120 superheavy element
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Time-dependent Hartree-Fock plus Langevin approach for hot fusion reactions to synthesize the Z=120 superheavy element

机译：时间依赖的Hartree-Fock Plus Langevin方法用于热熔反应，合成Z = 120超频元件

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摘要

We develop a novel approach to fusion reactions for synthesis of superheavy elements, which combines the time-dependent Hartree-Fock (TDHF) method with a dynamical diffusion model based on the Langevin equation. In this approach, the distance of the closest approach for the capture process is estimated within the TDHF approach, which is then plugged into the dynamical diffusion model as an initial condition. We apply this approach to hot fusion reactions leading to formation of the element Z = 120, that is, the Ca-48 + Fm-254,Fm-257, V-51 + Bk-249, and Cr-54 + Cm-248 reactions. Our calculations indicate that the distances of the closest approach for these systems are similar to each other and thus the difference in the probabilities of evaporation residue formation among those reaction systems originates mainly from the evaporation process, which is sensitive to the fission barrier height and the excitation energy of a compound nucleus.
机译：我们开发了一种新的融合反应方法，用于合成过度元素，其基于Langevin等式将时间依赖性Hartree-Fock（TDHF）方法与动态扩散模型相结合。 在这种方法中，在TDHF方法内估计最接近捕获过程的距离，然后将其作为初始条件插入动态扩散模型。 我们将这种方法应用于热熔反应，导致元素Z = 120的形成，即CA-48 + FM-254，FM-257，V-51 + BK-249和CR-54 + CM-248 反应。 我们的计算表明，这些系统最近方法的距离彼此相似，因此这些反应系统中蒸发残留物形成的概率差异主要来自蒸发过程，这对裂变屏障高度敏感 复合核的激发能量。

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