Tunnelling of electrons via the neighboring atomOACSTPCD
As compared to the intuitive process that the electron emits straight to the continuum from its parent ion,there is an alternative route that the electron may transfer to and be trapped by a neighboring ionic core before the eventual release.Here,we demonstrate that electron tunnelling via the neighboring atomic core is a pronounced process in light-induced tunnelling ionization of molecules by absorbing multiple near-infrared photons.We devised a siteresolved tunnelling experiment using an Ar-Kr+ion as a prototype system to track the electron tunnelling dynamics from the Ar atom towards the neighboring Kr+by monitoring its transverse momentum distribution,which is temporally captured into the resonant excited states of the Ar-Kr+before its eventual releasing.The influence of the Coulomb potential of neighboring ionic cores promises new insights into the understanding and controlling of tunnelling dynamics in complex molecules or environment.
Ming Zhu;Jihong Tong;Xiwang Liu;Weifeng Yang;Xiaochun Gong;Wenyu Jiang;Peifen Lu;Hui Li;Xiaohong Song;Jian Wu;
School of Physics and Optoelectronic Engineering,Hainan University,Haikou 570288,China School of Information and Communication Engineering,Hainan University,Haikou 570288,ChinaState Key Laboratory of Precision Spectroscopy,East China Normal University,Shanghai 200241,ChinaSchool of Physics and Optoelectronic Engineering,Hainan University,Haikou 570288,ChinaSchool of Physics and Optoelectronic Engineering,Hainan University,Haikou 570288,China Center for Theoretical Physics,Hainan University,Haikou 570288,China
物理学
neighboringstraightresonant
《Light(Science & Applications)》 2024 (001)
P.127-134 / 8
supported by the National Natural Science Foundation of China(Grants Nos.12374260,12241407,12074240,12204135);Hainan Provincial Natural Science Foundation of China(Grant No.122CXTD504);the Fundamental Research Funds for the Central Universities and the Sino-German Center for Research Promotion(SGC,Grant No.M-0031).
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