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Small helium clusters formation

机译:小氦簇形成

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摘要

We investigated small helium clusters formation in nonequilibrium conditions using the non-Hermitian formalism. Helium is a simple enough system for analytical study while complicated enough to have a rich variety of quantum properties. In this article, we used a new formalism based on non-Hermitian quantum mechanics for describing the electronic excited states in clusters. This formalism enabled to estimate the decay time of excited states within a single scheme. Its implementation to helium shows the existence of new long-lived excited states in small helium clusters at the distance of 5.6 Bohr radii between atoms. Moreover, several helium excimers and exciplexes at the distances between helium atoms of 35.5, 22.8, 14.0, and 8.5 Bohr radii with the scaling factor of about 1.6 were found. It is related to the restructuring of the electronic structure caused by powerful external excitations. These results give a new insight on clustering processes providing more profound and complete understanding.
机译:我们使用非封闭师形式主义调查了小氦簇在非醌条件下形成。氦气是一种足够简单的分析研究系统,同时复杂足以具有丰富的量子特性。在本文中,我们使用了一种基于非密封量子力学的新型主义,用于描述集群中的电子兴奋状态。这种形式主义能够估计一个方案中兴奋状态的衰减时间。其对氦气的实施表明,在原子之间的5.6 BoHR半径的距离下的小氦簇中的新的长寿激发状态存在。此外,在氦原子之间的距离为35.5,22.8,14.0和8.5 boHR半径之间的几个氦准分配器和来自缩放因子的距离为约1.6的距离。它与强大的外部激励引起的电子结构的重组有关。这些结果对聚类流程提供了新的识别,提供更深刻和完全理解。

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