Author
Listed:
- Wenbin Zhang
(East China Normal University)
- Xiaochun Gong
(East China Normal University)
- Hui Li
(East China Normal University)
- Peifen Lu
(East China Normal University)
- Fenghao Sun
(East China Normal University)
- Qinying Ji
(East China Normal University)
- Kang Lin
(East China Normal University)
- Junyang Ma
(East China Normal University)
- Hanxiao Li
(East China Normal University)
- Junjie Qiang
(East China Normal University)
- Feng He
(Shanghai Jiao Tong University)
- Jian Wu
(East China Normal University
Shanxi University)
Abstract
Atoms and molecules exposed to strong laser fields can be excited to the Rydberg states with very high principal quantum numbers and large orbitals. It allows acceleration of neutral particles, generate near-threshold harmonics, and reveal multiphoton Rabi oscillations and rich photoelectron spectra. However, the physical mechanism of Rydberg state excitation in strong laser fields is yet a puzzle. Here, we identify the electron-nuclear correlated multiphoton excitation as the general mechanism by coincidently measuring all charged and neutral fragments ejected from a H2 molecule. Ruled by the ac-Stark effect, the internuclear separation for resonant multiphoton excitation varies with the laser intensity. It alters the photon energy partition between the ejected electrons and nuclei and thus leads to distinct kinetic energy spectra of the nuclear fragments. The electron-nuclear correlation offers an alternative visual angle to capture rich ultrafast processes of complex molecules.
Suggested Citation
Wenbin Zhang & Xiaochun Gong & Hui Li & Peifen Lu & Fenghao Sun & Qinying Ji & Kang Lin & Junyang Ma & Hanxiao Li & Junjie Qiang & Feng He & Jian Wu, 2019.
"Electron-nuclear correlated multiphoton-route to Rydberg fragments of molecules,"
Nature Communications, Nature, vol. 10(1), pages 1-8, December.
Handle:
RePEc:nat:natcom:v:10:y:2019:i:1:d:10.1038_s41467-019-08700-5
DOI: 10.1038/s41467-019-08700-5
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