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

Research output: Contribution to journalArticle

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

Fingerprint

thrust chambers
Laser fusion
ion extraction
laser fusion
Rockets
rockets
Demonstrations
Plasmas
Magnetic fields
Ions
magnetic fields
thrust
Kinetic energy
accumulators
field strength
vehicles
kinetic energy
Computer simulation
ions
simulation

All Science Journal Classification (ASJC) codes

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

Cite this

Experimental demonstration of ion extraction from magnetic thrust chamber for laser fusion rocket. / Saito, Naoya; Yamamoto, Naoji; Morita, Taichi; Edamoto, Masafumi; Nakashima, Hideki; Fujioka, Shinsuke; Yogo, Akifumi; Nishimura, Hiroaki; Sunahara, Atsushi; Mori, Yoshitaka; Johzaki, Tomoyuki.

In: Japanese Journal of Applied Physics, Vol. 57, No. 5, 050303, 01.05.2018.

Research output: Contribution to journalArticle

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, vol. 57, no. 5, 050303. https://doi.org/10.7567/JJAP.57.050303
Saito, Naoya ; Yamamoto, Naoji ; Morita, Taichi ; Edamoto, Masafumi ; Nakashima, Hideki ; Fujioka, Shinsuke ; Yogo, Akifumi ; Nishimura, Hiroaki ; Sunahara, Atsushi ; Mori, Yoshitaka ; Johzaki, Tomoyuki. / Experimental demonstration of ion extraction from magnetic thrust chamber for laser fusion rocket. In: Japanese Journal of Applied Physics. 2018 ; Vol. 57, No. 5.
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