Electron capture of iron-group nuclei in magnetars
Electron capture of iron-group nuclei in magnetars
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DOI：
10.1093/mnras/stt2086
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发表时间：
2013-12
影响因子：
4.8
通讯作者：
jing-jing liu-jing
中科院分区：
文献类型：
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作者：
jing-jing liu-jing
利用超强磁场中的相对论和核壳模型，对铁族核在超强磁场中的电子俘获率进行了估算。由于EC的电子丰度（RCEA）的变化率也在SMF中进行了研究。结果表明，铁族核素的电导率在磁场作用下有较大幅度的提高，甚至超过9个数量级。另一方面，在EC反应中，自微扰对RCEA的影响很大，甚至降低了八个数量级以上，并与Fuller等人的结果进行了比较。(FFN)和Aufderheide et al.（AUFD）在有和没有SMF的情况下。结果表明，我们的结果与AUFD的很好的一致，但FFN的速率比我们在没有SMF的情况下大约大一个数量级。相反，我们计算的大多数核素在SMF中的速率增加，甚至超过了九个和八个数量级的FFN的和AUFD的结果相比，这是在没有SMF的情况下，分别。
Using the theory of relativity in superstrong magnetic fields (SMFs) and nuclear shell model, we carry out estimation for electron capture (EC) rates on iron group nuclei in SMFs. The rates of change of electronic abundance (RCEA) due to EC are also investigated in SMFs. It is concluded that the EC rates of most iron group nuclides are increased greatly by SMFs and even exceeded by nine orders of magnitude. On the other hand, RCEA is influenced greatly by SMFs and even reduced by more than eight orders of magnitude in the EC reaction.We also compare our results with those of Fuller et al.(FFN) and Aufderheide et al.(AUFD) in the case with and without SMFs. The results show that our results are in good agreement with AUFD's, but the rates of FFN's are about close to one order of magnitude bigger than ours in the case without SMFs. On the contrary, our calculated rates for most nuclides in SMFs are increased and even exceeded as much as for nine and eight orders of magnitude of compared to FFN's and AUFD's results, which is in the case without SMFs, respectively.