论文标题
中微子驱动的风中“轻”重核的核合成。 （$α，n $）反应的角色
Nucleosynthesis of "Light" Heavy Nuclei in Neutrino-driven Winds. Role of ($α,n$) reactions
论文作者
论文摘要
核心塌陷超新星之后中微子驱动的风被作为合适的地点，可以合成所谓的轻度重元素（在SR到Ag之间）。对于中等中子的风，（$α，n $）反应在弱R过程中起着至关重要的作用，成为将核物质推向更重的元素的主要机制。在本文中，我们总结了网络计算的丰度对天体物理条件的敏感性，以及（$α，n $）反应速率的不确定性。确定了很少的（$α，n $）反应的列表，以主导计算出的元素丰度中的不确定性。这些反应的测量将通过比较R限制的恒星中计算出的/观察到的丰度来识别弱R过程的天体物理条件。
Neutrino-driven winds following core collapse supernovae have been proposed as a suitable site where the so-called light heavy elements (between Sr to Ag) can be synthetized. For moderately neutron-rich winds, ($α,n$) reactions play a critical role in the weak r process, becoming the main mechanism to drive nuclear matter towards heavier elements. In this paper we summarize the sensitivity of network-calculated abundances to the astrophysical conditions, and to uncertainties in the ($α,n$) reaction rates. A list of few ($α,n$) reactions were identified to dominate the uncertainty in the calculated elemental abundances. Measurements of these reactions will allow to identify the astrophysical conditions of the weak r process by comparing calculated/observed abundances in r-limited stars.
