Non-adiabatic imprints on the low-energy structure in above-threshold ionization. (1st February 2022)

• Record Type: Journal Article
• Authors: Lin, Z. Y.; Chen, Y.; Li, X. W.
• Is Part Of: Europhysics letters. Volume 137:Number 3(2022)
• Publication Date: 2022-02-01
• Subjects: Physics -- Periodicals; Electronic journals; 530.05
• DOI: 10.1209/0295-5075/ac5fcd
• Languages: English
• ISSNs: 0295-5075

Abstract

Abstract: 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.