Laser-matter interaction in cluster medium in the radiation dominated regime

8th International Conference on Inertial Fusion Sciences and Applications

Iwata, N.^1 ; Kishimoto, Y.^1 ; Wu, F.^1 ; Fukuda, Y.^2

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

611-0011, Japan^1

Advanced Photon Research Center, JAEA, 8-1 Umemidai, Kizugawa, Kyoto

619-0215, Japan^2

关键词: Coulomb explosion;    High intensity;    Integral codes;    Internal structure;    Ion accelerations;    Laser-matter interactions;    Packing fractions;    Radiation pressure;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/688/1/012038/pdf
DOI  :  10.1088/1742-6596/688/1/012038

来源: IOP

【 摘 要 】

We study the interaction between laser and cluster medium in high intensity regime 1022-24W/cm2using a particle based integral code (EPIC3D). By introducing four targets consisting of the same mass, i.e. same packing fraction, but having different internal structure, we investigate the effect of cluster on the acceleration dynamics comparing with that of thin film. In the radiation pressure dominated regime, the cluster medium exhibits a higher maximum energy than that achieved by the simple piston mechanism due to the additional accerelation by the Coulomb explosion. The optimum cluster radius for ion acceleration is found to exist depending on the laser power irradiated.