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Photoelectron Spectroscopy on Magnesium Ensembles in Helium Nanodroplets

机译:在氦纳米橄榄石的镁合奏的光电子光谱

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摘要

The electronic properties of magnesium embedded in helium nanodroplets are investigated as a function of the doping level by combining resonant two-photon ionization with photoelectron spectroscopy. Photon absorption near the atomic 3(1)P(1) <- 3(1)S(0) transition triggers the dynamics, which is probed on a nanosecond timescale by the subsequent absorption of the ionizing photon. Striking similarities in the photoelectron spectra for different doping levels and the population of atomic states well beyond 3(1)P(1) evidence an energy release process being relevant for a wide range of droplet sizes and doping conditions. From the statistical analysis, one can infer that instead of a single compact cluster size, a loosely bound Mg atom ensemble is responsible for the resulting spectra.
机译:通过将共振双光子电离与光电子谱相结合,研究了嵌入氦纳米辊中的镁的电子特性作为掺杂水平的函数。 原子3(1)P(1)℃(1)秒(0)转变附近的光子吸收触发动力学,通过随后的电离光子的吸收,在纳米秒计量上探测。 用于不同掺杂水平的光电子光谱中的醒目相似性和原子状态的群体远超过3(1)P(1)证据,该释放过程与各种液滴尺寸和掺杂条件相关。 从统计分析中,可以推断出代替单个紧凑的簇大小,松散绑定的MG原子集合是负责所得谱的。

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