Time-resolved investigation of transient charges in laser-produced nanoplasmas

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

Schütte, Bernd^1,2 ; Vrakking, Marc J.J.^1 ; Rouzée, Arnaud^1

Max-Born-Institut, Max-Born-Strasse 2A, Berlin

12489, Germany^1

Department of Physics, Imperial College London, London

SW7 2AZ, United Kingdom^2

关键词: Autoionization;    Electron-ion recombinations;    Ion charge state;    Near-infrared lasers;    Pump-probe spectroscopy;    Quantum phenomena;    Transient charges;    Underlying dynamics;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/635/10/102005/pdf
DOI  :  10.1088/1742-6596/635/10/102005

来源: IOP

【 摘 要 】

We report on the observation of a transient C4+ion charge state in nanoplasmas produced by the interaction of intense near-infrared (NIR) laser pulses with CH4clusters. The underlying dynamics are studied by pump-probe spectroscopy, which reveals that the ion charge states are lowered by electron-ion recombination. Furthermore, we present direct evidence that autoionization of multiply-excited ions plays an important role in expanding nanoplasmas, in contrast to models that neglect quantum phenomena.