Ablation plasma transport using multicusp magnetic field for laser ion source

9th International Conference on Inertial Fusion Sciences and Applications

Takahashi, K.^1 ; Umezawa, M.^1 ; Uchino, T.^1 ; Ikegami, K.^1 ; Sasaki, T.^1 ; Kikuchi, T.^1 ; Harada, N.^1

Department of Electrical Engineering, Nagaoka University of Technology, Kamitomioka 1603-1, Nagaoka, Niigata, Japan^1

关键词: Ablation plasma;    Laser ablation plasmas;    Laser ion sources;    Plasma expansion;    Plasma ions;    Radial direction;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/717/1/012113/pdf
DOI  :  10.1088/1742-6596/717/1/012113

来源: IOP

【 摘 要 】

We propose a plasma guiding method using multicusp magnetic field to transport the ablation plasma keeping the density for developing laser ion sources. To investigate the effect of guiding using the magnetic field on the ablation plasma, we demonstrated the transport of the laser ablation plasma in the multicusp magnetic field. The magnetic field was formed with eight permanent magnets and arranged to limit the plasma expansion in the radial direction. We investigated the variation of the plasma ion current density and charge distribution during transport in the magnetic field. The results indicate that the plasma is confined in the radial direction during the transport in the multicusp magnetic field.