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arXiv · 1412.6222

Control of Electron Beam Using Strong Magnetic Field for Efficient Core Heating in Fast Ignition

T. Johzaki·T. Taguchi·Y. Sentoku·A. Sunahara·H. Nagatomo·H. Sakagami·K. Mima·S. Fujioka·H. Shiraga
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Abstract

For enhancing the core heating efficiency in electron-driven fast ignition, we proposed the fast electron beam guiding using externally applied longitudinal magnetic fields. Based on the PIC simulations for the FIREX-class experiments, we demonstrated the sufficient beam guiding performance in the collisional dense plasma by kT-class external magnetic fields for the case with moderate mirror ratio (~<10 ). Boring of the mirror field was found through the formation of magnetic pipe structure due to the resistive effects, which indicates a possibility of beam guiding in high mirror field for higher laser intensity and/or longer pulse duration.

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T. Johzaki, T. Taguchi, Y. Sentoku, A. Sunahara, H. Nagatomo, H. Sakagami, K. Mima, S. Fujioka, H. Shiraga. 2014-12-19. Control of Electron Beam Using Strong Magnetic Field for Efficient Core Heating in Fast Ignition. https://doi.org/10.1088/0029-5515%2F55%2F5%2F053022

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