Ionization and acceleration of heavy ions in high-Z solid target irradiated by high intensity laser

9th International Conference on Inertial Fusion Sciences and Applications

Kawahito, D.^1 ; Kishimoto, Y.^1

Graduate School of Energy Science, Kyoto University, Uji, Kyoto

611-0011, Japan^1

关键词: Charge state;    Heat transport;    High intensity lasers;    High-energy electron;    Ionization dynamics;    Solid films;    Solid targets;    Vacuum region;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/717/1/012066/pdf
DOI  :  10.1088/1742-6596/717/1/012066

来源: IOP

【 摘 要 】

In the interaction between high intensity laser and solid film, an ionization dynamics inside the solid is dominated by fast time scale convective propagation of the internal sheath field and the slow one by impact ionization due to heated high energy electrons coupled with nonlocal heat transport. Furthermore, ionization and acceleration due to the localized external sheath field which co- propagates with Al ions constituting the high energy front in the vacuum region. Through this process, the maximum charge state and then q/A increase in the rear side, so that ions near the front are further accelerated to high energy.