Experimental demonstration of ion extraction from magnetic thrust chamber for laser fusion rocket

Naoya Saito, Naoji Yamamoto, Taichi Morita, Masafumi Edamoto, Hideki Nakashima, Shinsuke Fujioka, Akifumi Yogo, Hiroaki Nishimura, Atsushi Sunahara, Yoshitaka Mori, Tomoyuki Johzaki

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Abstract

A magnetic thrust chamber is an important system of a laser fusion rocket, in which the plasma kinetic energy is converted into vehicle thrust by a magnetic field. To investigate the plasma extraction from the system, the ions in a plasma are diagnosed outside the system by charge collectors. The results clearly show that the ion extraction does not strongly depend on the magnetic field strength when the energy ratio of magnetic field to plasma is greater than 4.3, and the magnetic field pushes back the plasma to generate a thrust, as previously suggested by numerical simulation and experiments.

Original languageEnglish
Article number050303
JournalJapanese Journal of Applied Physics
Volume57
Issue number5
DOIs
Publication statusPublished - May 1 2018

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Physics and Astronomy(all)

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  • Cite this

    Saito, N., Yamamoto, N., Morita, T., Edamoto, M., Nakashima, H., Fujioka, S., Yogo, A., Nishimura, H., Sunahara, A., Mori, Y., & Johzaki, T. (2018). Experimental demonstration of ion extraction from magnetic thrust chamber for laser fusion rocket. Japanese Journal of Applied Physics, 57(5), [050303]. https://doi.org/10.7567/JJAP.57.050303