Electron beam guiding by strong longitudinal magnetic fields

8th International Conference on Inertial Fusion Sciences and Applications

Johzaki, T.^1 ; Mima, K.^2 ; Fujioka, S.^3 ; Sakagami, H.^4 ; Sunahara, A.^5 ; Nagatomo, H.^3 ; Shiraga, H.^3

Graduate School of Engineering, Hiroshima University, Higashi-Hiroshima, Japan^1

Graduate School for the Creation of New Photonics Industries, Hamamatsu, Japan^2

Institute of Laser Engineering, Osaka University, Suita, Osaka, Japan^3

Institute for Laser Technology, Osaka, Japan^4

National Institute for Fusion Science, Toki, Japan^5

关键词: Beam divergence;    Critical issues;    Electron-driven;    Fast electron beam;    Field strengths;    Longitudinal magnetic fields;    PIC simulation;    Uniform magnetic fields;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/688/1/012041/pdf
DOI  :  10.1088/1742-6596/688/1/012041

来源: IOP

【 摘 要 】

In electron-driven fast ignition, the guiding of fast electron beam having significantly large beam divergence is one of the most critical issues for efficient core heating. To guide the fast electron beam to the core, we consider to externally apply longitudinal magnetic fields. From the 2D PIC simulations applying uniform magnetic fields, it was shown that the field strength of 1∼10kT is required for efficient guiding for the heating laser intensity of 1018∼1020W/cm2.