On the rotational temperature and structure dependence of electric field deflection experiments: a case study of germanium clusters.
On the rotational temperature and structure dependence of electric field deflection experiments: a case study of germanium clusters.
复制标题
关于电场偏转实验的旋转温度和结构依赖性：以锗团簇为例。
DOI：
10.1063/1.3610390
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发表时间：
2011
期刊：
影响因子：
--
通讯作者：
R. Schäfer
中科院分区：
文献类型：
--
作者：
S. Heiles;S. Schäfer;R. Schäfer
分子束电场偏转实验为研究气相中孤立粒子的结构和介电性质提供了一种手段。然而，它们的定量解释仍然是一项艰巨的任务。尽管这种方法有好处，但挠曲行为的分析往往被各种实验和理论问题复杂化，包括挠曲粒子的内部和旋转模式中储存的能量以及结构不对称的数量。在这篇文章中，我们通过讨论实验观察到的Ge(9)、Ge（10）和Ge（15）团簇的场致偏转来解决这些问题，并与量子力学和经典偏转模型进行了比较。此外，我们推导出简单的公式来描述分子束偏转如何依赖于粒子的旋转温度和对称性。基于这些结果，我们讨论了分子束电场偏转实验在多大程度上可以作为测定气相孤立团簇结构的工具。
Molecular beam electric field deflection experiments offer a probe to the structural and dielectric properties of isolated particles in the gas phase. However, their quantitative interpretation is still a formidable task. Despite the benefits of this method, the analysis of the deflection behavior is often complicated by various experimental and theoretical problems, including the amount of energy stored in internal and rotational modes of the deflected particle and the amount of structural asymmetry. In this contribution, we address these issues by discussing the experimentally observed field-induced deflection of Ge(9), Ge(10), and Ge(15) clusters in comparison to quantum mechanical and classical deflection models. Additionally, we derive simple formulas to describe how the molecular beam deflection depends on the rotational temperature and the symmetry of the particle. Based on these results, we discuss to what extend molecular beam electric field deflection experiments can be used as a tool for structure determination of isolated clusters in the gas phase.