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arXiv 1111.0494nucl-th
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μ子原子中μ子能级与原子核结构的相关性

Correlation between muonic levels and nuclear structure in muonic atoms

J. M. Dong, W. Zuo, H. F. Zhang, W. Scheid, J. Z. Gu, Y. Z. Wang

摘要:

采用核子和μ子统一处理的方法研究μ子铅,可以清楚地研究μ子与核之间的关联。一个“扭结”出现在μ子同位素位移在中子幻数的核壳结构起着关键作用。这一行为对实验上探测远离$β$稳定线的核壳层结构具有重要意义。我们研究了μ子原子与μ子相互作用引起的原子核结构的变化,发现原子核结构基本保持不变。因此,μ子是研究原子核结构的干净而可靠的探针。此外,μ子引起的质子密度分布的轻微变化,反过来又转移μ子水平的修正进行了研究。这种对μ子能级的修正与兰姆位移和高阶真空极化修正同样重要,但比反常磁矩和电子屏蔽修正大。

英文摘要:

A method that deals with the nucleons and the muon unitedly is employed to investigate the muonic lead, with which the correlation between the muon and nucleus can be studied distinctly. A "kink" appears in the muonic isotope shift at a neutron magic number where the nuclear shell structure plays a key role. This behavior may have very important implications for the experimentally probing the shell structure of the nuclei far away from the $β$-stable line. We investigate the variations of the nuclear structure due to the interaction with the muon in the muonic atom and find that the nuclear structure remains basically unaltered. Therefore, the muon is a clean and reliable probe for studying the nuclear structure. In addition, a correction that the muon-induced slight change in the proton density distribution in turn shifts the muonic levels is investigated. This correction to muonic level is as important as the Lamb shift and high order vacuum polarization correction, but is larger than anomalous magnetic moment and electron shielding correction.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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