| Issue |
EPL
Volume 137, Number 3, February 2022
|
|
|---|---|---|
| Article Number | 35001 | |
| Number of page(s) | 6 | |
| Section | Atomic, molecular and optical physics | |
| DOI | https://doi.org/10.1209/0295-5075/ac5fcd | |
| Published online | 19 April 2022 | |
Non-adiabatic imprints on the low-energy structure in above-threshold ionization
Fujian Key Laboratory of Optical Beam Transmission and Transformation, College of Information Science and Engineering, Huaqiao University - Xiamen 361021, PRC
(a) suthing@hqu.edu.cn (corresponding author)
Received: 25 January 2022
Accepted: 22 March 2022
We experimentally investigate the energy-resolved angular distributions (ADs) of low-energy photoelectrons from above-threshold ionization (ATI) of Xe in intense infrared laser fields. An unexpected wavelength dependence of ADs for the low-energy structure (LES), in striking contrast to the prediction of the Coulomb-corrected semiclassical model, has been found. By improving the semiclassical model with non-adiabatic corrections, the experimental features can be qualitatively reproduced, and we suggest the indispensable role of the non-adiabatic effect in producing the LES. Our finding provides new insights into the understanding of low-energy electron dynamics of atoms with intense laser fields.
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