Higher-order and unconventional low-energy structures

29th International Conference on Photonic, Electronic, and Atomic Collisions

Saalman, Ulf^1 ; Diesen, Elias^1 ; Rost, Jan-Michael^1

Max Planck Institute for the Physics of Complex Systems, Nöthnitzer Straße 38, Dresden

01187, Germany^1

关键词: Higher-order;    Low energy structures;    Near-infrared lasers;    Recollision;    Rydberg electron;    Slow electrons;    Static electric fields;    Zero energies;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/635/9/092044/pdf
DOI  :  10.1088/1742-6596/635/9/092044

来源: IOP

【 摘 要 】

Atoms or molecules exposed to intense near-infrared laser pulses produces a considerable amount of slow electrons forming peaks in measured photo-electron spectra. We show that these peaks, namely the so called low-energy structure (les), higher-order variants and the very-low-energy structure (vles), can be understood as different solutions of the same soft- recollision mechanism. Additionally we explain the formation of a "zero-energy structure" ("zes") as a consequence of the release of Rydberg electrons by a static electric field.