Fano resonances observed in helium nanodroplets
Fano resonances observed in helium nanodroplets
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DOI：
10.1103/physreva.93.050502
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发表时间：
2015-10
影响因子：
2.9
通讯作者：
A. LaForge;D. Regina;G. Jabbari;K. Gokhberg;N. Kryzhevoi;S. Krishnan;M. Hess;P. O’Keeffe;A. Ciavardini;K. Prince;R. Richter;R. Moshammer;L. Cederbaum;T. Pfeifer;F. Stienkemeier;M. Mudrich
中科院分区：
文献类型：
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作者：
A. LaForge;D. Regina;G. Jabbari;K. Gokhberg;N. Kryzhevoi;S. Krishnan;M. Hess;P. O’Keeffe;A. Ciavardini;K. Prince;R. Richter;R. Moshammer;L. Cederbaum;T. Pfeifer;F. Stienkemeier;M. Mudrich
利用同步辐射研究了氦纳米液滴的双激发里德堡态。我们观察到Fano共振相关的原子N = 2，0系列作为液滴尺寸的函数。虽然在性质上类似于它们的原子对应物，但共振线更宽，并且表现出能量的变化，这种变化随着激发态的升高而增加。此外，还观察到原子系统中没有的额外共振。我们讨论了这些功能的离域原子状态扰动周围的He原子和比较单激发液滴。
Doubly-excited Rydberg states of helium (He) nanodroplets have been studied using synchrotron radiation. We observed Fano resonances related to the atomic N = 2,0 series as a function of droplet size. Although similar qualitatively to their atomic counterparts, the resonance lines are broader and exhibit a shift in energy which increases for the higher excited states. Furthermore, additional resonances are observed which are not seen in atomic systems. We discuss these features in terms of delocalized atomic states perturbed by the surrounding He atoms and compare to singly excited droplets.