Integrated simulations for ion beam assisted fast ignition

8th International Conference on Inertial Fusion Sciences and Applications

Sakagami, H.^1 ; Johzaki, T.^2 ; Sunahara, A.^3 ; Nagatomo, H.^4

Fundamental Physics Simulation Research Division, National Institute for Fusion Science, 322-6 Oroshi-cho, Toki

509-5292, Japan^1

Graduate School of Engineering, Hiroshima University, 1-3-2 Kagamiyama, Higashi- Hiroshima

739-8511, Japan^2

Institute for Laser Technology, 2-6 Yamada-oka, Suita

565-0871, Japan^3

Institute of Laser Engineering, Osaka University, 2-6 Yamada-oka, Suita

565-0871, Japan^4

关键词: Cone-guided targets;    Coupling efficiency;    Divergence angle;    Fast electrons;    Heating lasers;    Integrated simulations;    Low density foam;    Osaka University;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/688/1/012096/pdf
DOI  :  10.1088/1742-6596/688/1/012096

来源: IOP

【 摘 要 】

Although the energy conversion efficiency from the heating laser to fast electrons is high, the coupling efficiency from fast electrons to the core is estimated to be very low due to large divergence angle of fast electrons in fast ignition experiments at ILE, Osaka University. To mitigate this problem, a plastic thin film or low-density foam, which can generate not only proton (H+) but also carbon (C6+) beams, is combined with currently used cone-guided targets and additional core heating by ions is expected. According to integrated simulations, it is found that these ion beams can enhance the core heating by 20∼60% and it shows a possibility of ion beam assisted fast ignition.