Abstract

Theoretical cross sections of the neutron capture reaction on neutron-rich isotopes \({}^{180{-}190}\)Tb have been obtained using the TALYS statistical model with various methods of calculating nuclear masses and energy level densities. On the basis of these data, reaction rates at a temperature of \(1.2\) GK corresponding to the explosive evolution of a star have been computed. The obtained rates were used to calculate the astrophysical \(r\)-process using the SkyNet Modular Nuclear Reaction Network Library. Concentrations deviations of \(r\)-process products were computed for different parameters of the statistical model for calculating cross sections.

中文翻译：

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统计模型的参数选择对$$ {}} {\ textbf {180 {-} 190}} $$ Tb的r进程产量的影响

摘要

利用TALYS统计模型，采用各种计算核质量和能级密度的方法，获得了对富中子同位素（{} ^ {180 {-} 190} \） Tb的中子俘获反应的理论截面。根据这些数据，已计算出在温度（\）（1.2 \） GK时与恒星爆炸性爆炸相对应的反应速率。使用SkyNet模块化核反应网络库，将获得的速率用于计算天体物理（r）过程。对于用于计算横截面的统计模型的不同参数，计算\（r \）-处理产物的浓度偏差。