Direct measurement of the impulse in a magnetic thrust chamber system for laser fusion rocket

Akihiro Maeno; Naoji Yamamoto; Hideki Nakashima; Shinsuke Fujioka; Tomoyuki Johzaki; Yoshitaka Mori; Atsushi Sunahara

doi:10.1063/1.3626600

Direct measurement of the impulse in a magnetic thrust chamber system for laser fusion rocket

Akihiro Maeno, Naoji Yamamoto, Hideki Nakashima, Shinsuke Fujioka, Tomoyuki Johzaki, Yoshitaka Mori, Atsushi Sunahara

Engineering Science for Advanced energy system

Research output: Contribution to journal › Article › peer-review

10 Citations (Scopus)

Abstract

An experiment is conducted to measure an impulse for demonstrating a magnetic thrust chamber system for laser fusion rocket. The impulse is produced by the interaction between plasma and magnetic field. In the experiment, the system consists of plasma and neodymium permanent magnets. The plasma is created by a single-beam laser aiming at a polystyrene spherical target. The impulse is 1.5 to 2.2 μNs by means of a pendulum thrust stand, when the laser energy is 0.7 J. Without magnetic field, the measured impulse is found to be zero. These results indicate that the system for generating impulse is working.

Original language	English
Article number	071501
Journal	Applied Physics Letters
Volume	99
Issue number	7
DOIs	https://doi.org/10.1063/1.3626600
Publication status	Published - Aug 15 2011

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

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10.1063/1.3626600

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title = "Direct measurement of the impulse in a magnetic thrust chamber system for laser fusion rocket",

abstract = "An experiment is conducted to measure an impulse for demonstrating a magnetic thrust chamber system for laser fusion rocket. The impulse is produced by the interaction between plasma and magnetic field. In the experiment, the system consists of plasma and neodymium permanent magnets. The plasma is created by a single-beam laser aiming at a polystyrene spherical target. The impulse is 1.5 to 2.2 μNs by means of a pendulum thrust stand, when the laser energy is 0.7 J. Without magnetic field, the measured impulse is found to be zero. These results indicate that the system for generating impulse is working.",

author = "Akihiro Maeno and Naoji Yamamoto and Hideki Nakashima and Shinsuke Fujioka and Tomoyuki Johzaki and Yoshitaka Mori and Atsushi Sunahara",

note = "Funding Information: The authors wish to acknowledge the Grant-in-Aid for Scientific Research (B) (No. 21360418) and the Grant-in-Aid for JSPS Fellows sponsored by the Japan Society for the Promotion of Science (No. 22-1672) Japan. This work was performed under Collaborative Research, Institute of Laser Engineering, Osaka University, No. B1-19, 2009. We express our gratitude to Mr. Eiji Sato at Osaka University for his helpful assistance.",

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AU - Maeno, Akihiro

AU - Yamamoto, Naoji

AU - Nakashima, Hideki

AU - Fujioka, Shinsuke

AU - Johzaki, Tomoyuki

AU - Mori, Yoshitaka

AU - Sunahara, Atsushi

N1 - Funding Information: The authors wish to acknowledge the Grant-in-Aid for Scientific Research (B) (No. 21360418) and the Grant-in-Aid for JSPS Fellows sponsored by the Japan Society for the Promotion of Science (No. 22-1672) Japan. This work was performed under Collaborative Research, Institute of Laser Engineering, Osaka University, No. B1-19, 2009. We express our gratitude to Mr. Eiji Sato at Osaka University for his helpful assistance.

PY - 2011/8/15

Y1 - 2011/8/15

N2 - An experiment is conducted to measure an impulse for demonstrating a magnetic thrust chamber system for laser fusion rocket. The impulse is produced by the interaction between plasma and magnetic field. In the experiment, the system consists of plasma and neodymium permanent magnets. The plasma is created by a single-beam laser aiming at a polystyrene spherical target. The impulse is 1.5 to 2.2 μNs by means of a pendulum thrust stand, when the laser energy is 0.7 J. Without magnetic field, the measured impulse is found to be zero. These results indicate that the system for generating impulse is working.

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Direct measurement of the impulse in a magnetic thrust chamber system for laser fusion rocket

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