标题： 超新星中奇奇核素的电子捕获率 显示英文标题

标题： Supernova electron capture rates on odd-odd nuclei

摘要： 在10^8到10^10 g/cm^3之间的密度下，认为超新星坍缩期间的电子捕获主要发生在奇-奇核素上。 我们根据基态和第一激发态的Gamow-Teller强度分布计算结果，得出了六种最重要的电子捕获核素的速率，{54,56,58}Mn和{56,58,60}Co。 这些计算是在pf壳层中通过壳模型对角化进行的，使用了KB3相互作用的最新修改版本。 壳模型速率明显小于目前采用的速率，因为后者是通过将Gamow-Teller（GT）共振置于过低的激发能级上得出的。 显示英文摘要

摘要： At densities between 10^8 and 10^10} g/cm^3 electron capture in a presupernova collapse is believed to mainly occur on odd-odd nuclei. We have derived the rates for six of the most important electron capturing nuclei, {54,56,58}Mn and {56,58,60}Co, based on calculations of the Gamow-Teller strength distributions for the ground states and first excited states. These calculations have been performed by shell model diagonalization in the pf shell using a recently modified version of the KB3 interaction. The shell model rates are noticeably smaller than the presently adopted rates as the latter have been derived by placing the Gamow-Teller (GT) resonance at too low excitation energies.