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Simulating the photoelectron spectra of rare-gas clusters - art. no. 244717

机译:模拟稀有气体团簇的光电子能谱-艺术没有。 244717

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Motivated by the recent experiments of the Swedish group [ M. Tchaplyguine, R. R. Marinho, M. Gisselbrecht et al., J. Chem. Phys. 120, 345 (2004)], we simulate the photoelectron spectra of pure xenon and argon clusters. The clusters are modeled using molecular dynamics with Hartree-Fock- dispersion type pair potentials while the spectrum is calculated as the sum of final state energy shifts of the atoms ionized within the cluster relative to the isolated gas phase ion. A self-consistent polarization formalism is used. Since signal electrons must travel through the cluster to reach the detector, we have accounted for the attenuation of the signal intensity by integrating an exponentially decaying scattering expression over the geometry of the cluster. Several different approaches to determining the required electron mean free paths (as a function of electron kinetic energy) are considered. Our simulated spectra are compared to the experimental results. (c) 2005 American Institute of Physics.
机译:受瑞典研究组[M. Tchaplyguine,R. R. Marinho,M. Gisselbrecht等,J。Chem。物理120,345(2004)],我们模拟了纯氙和氩簇的光电子能谱。使用具有Hartree-Fock-弥散型对势的分子动力学对簇进行建模,同时将光谱计算为簇内被电离的原子相对于孤立的气相离子的最终态能平移的总和。使用了自洽的极化形式主义。由于信号电子必须穿过团簇才能到达检测器,因此我们通过对团簇的几何形状上的指数衰减散射表达式进行积分来说明信号强度的衰减。考虑了几种确定所需电子平均自由程(作为电子动能的函数)的方法。我们的模拟光谱与实验结果进行了比较。 (c)2005年美国物理研究所。

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