Electron streaking in the autoionization region of H2

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

Palacios, Alicia^1 ; González-Castrillo, Alberto^1 ; Martín, Fernando^1,2

Departamento de Química, Universidad Autónoma de Madrid, Módulo 13, Cantoblanco, Madrid

28049, Spain^1

Instituto Madrileño de Estudios Avanzados (IMDEA) en Nanociencia, Cantoblanco, Madrid, 28049, Spain^2

关键词: Attoseconds;    Autoionization;    Electron ejection;    Electron energy distributions;    Hydrogen molecule;    Laser-assisted photoionization;    Molecular axis;    Polarization vectors;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/635/11/112040/pdf
DOI  :  10.1088/1742-6596/635/11/112040

来源: IOP

【 摘 要 】

We use a UV-pump/IR-probe scheme, combining a single attosecond UV pulse and a 750 nm IR pulse, to explore laser-assisted photoionization of the hydrogen molecule in the autoionization region. The electron energy distributions exhibit unusual streaking patterns that are explored for different angles of the electron ejection with respect to the polarization vector and the molecular axis. Moreover, by controlling the time delay between the pulses, we observe that one can suppress the autoionization channel.