论文标题
在高激发时对超重核的生存概率进行建模
Modeling survival probabilities of superheavy nuclei at high excitations
论文作者
论文摘要
这项工作研究了激发的化合物超核核的第一级生存概率，以合成新的超重量元素。我们的模型的主要特征是在计算裂变速率中采用了微观温度依赖性裂变障碍。简单的推导被证明是为了阐明Bohr-Wheeler统计模型与虚构的自由能法之间的联系，从而获得了新的裂变速率公式。选择最佳的建模是为了再现$^{210} $ po的实验裂变概率。对NO，FL，OG和$ Z $ = 120化合物核的裂变和生存概率进行系统研究。结果表明，不同模型的差异很大，因为它们的生存概率超出了核的生存概率，尽管它们以$^{210} $ po接近。我们看到，$ z $ = 120的第一级生存概率与FL和OG相当。
This work investigated the first-chance survival probabilities of highly excited compound superheavy nuclei in the prospect of synthesizing new superheavy elements. The main feature of our modelings is the adoption of microscopic temperature dependent fission barriers in calculations of fission rates. A simple derivation is demonstrated to elucidate the connection between Bohr-Wheeler statistical model and imaginary free energy method, obtaining a new formula for fission rates. The best modeling is chosen with respect to reproducing the experimental fission probability of $^{210}$Po. Systematic studies of fission and survival probabilities of No, Fl, Og, and $Z$=120 compound nuclei are performed. Results show large discrepancies by different models for survival probabilities of superheavy nuclei although they are close for $^{210}$Po. We see that the first-chance survival probabilities of $Z$=120 are comparable to that of Fl and Og.
