TY - JOUR
T1 - Experimental demonstration of ion extraction from magnetic thrust chamber for laser fusion rocket
AU - Saito, Naoya
AU - Yamamoto, Naoji
AU - Morita, Taichi
AU - Edamoto, Masafumi
AU - Nakashima, Hideki
AU - Fujioka, Shinsuke
AU - Yogo, Akifumi
AU - Nishimura, Hiroaki
AU - Sunahara, Atsushi
AU - Mori, Yoshitaka
AU - Johzaki, Tomoyuki
N1 - Funding Information:
Acknowledgments This work was supported by JSPS KAKENHI Grant Numbers 25420852, 15K18283, 17K14876, and JP17J06801 and by the joint research project of the Institute of Laser Engineering, Osaka University (2014A1-31 and 2014B11-31). The authors would like to thank Mr. Eiji Sato for exceptional support during this experiment.
Publisher Copyright:
© 2018 The Japan Society of Applied Physics.
PY - 2018/5
Y1 - 2018/5
N2 - 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.
AB - 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.
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U2 - 10.7567/JJAP.57.050303
DO - 10.7567/JJAP.57.050303
M3 - Article
AN - SCOPUS:85046538102
SN - 0021-4922
VL - 57
JO - Japanese journal of applied physics
JF - Japanese journal of applied physics
IS - 5
M1 - 050303
ER -