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首页> 外文期刊>Physica Scripta: An International Journal for Experimental and Theoretical Physics >Unexpected transitions induced by spin-dependent, hyperfine and external magnetic-field interactions
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Unexpected transitions induced by spin-dependent, hyperfine and external magnetic-field interactions

机译：自旋相关，超精细和外部磁场相互作用引起的意外转变

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摘要

Unexpected transitions are induced by weaker interactions not included in the gross structure model of the ion under investigation. We discuss different examples of such decay channels, starting with relativistic spin-induced transitions. These represented an important field of study a few decades ago, and we illustrate how some challenging cases can be treated very accurately with today's computational techniques, while close degeneracy sometimes still prevents ab initio methods from obtaining accurate results. For hyperfine induced transitions we review some recent results and discuss remaining challenges for experiment and theory. Finally, we discuss the newly opened field of accurate calculations for transitions induced by an external magnetic field and point to some examples of where these are accessible for experimental tests.
机译：未预期的跃迁是由弱相互作用（未包括在所研究离子的总体结构模型中）引起的。我们从相对论自旋引起的跃迁开始讨论这种衰减通道的不同示例。这些代表了几十年前的一个重要研究领域，我们说明了如何使用当今的计算技术非常准确地处理一些具有挑战性的案例，而紧密的退化有时仍会阻止从头算方法获得准确的结果。对于超精细诱导的跃迁，我们回顾了一些最新结果并讨论了实验和理论尚存的挑战。最后，我们讨论了新开放的，由外部磁场引起的跃迁的精确计算领域，并指出了一些可用于实验测试的例子。

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