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Magnetic suspension of a pellet for inertial confinement fusion

Published online by Cambridge University Press:  09 March 2009

H. Yoshida
Affiliation:
Department of Electronics and Computer Engineering, Faculty of Engineering, Gifu University, Yanagido, Gifu 501–11, Japan
K. Katakami
Affiliation:
Department of Electronics and Computer Engineering, Faculty of Engineering, Gifu University, Yanagido, Gifu 501–11, Japan
Y. Sakagami
Affiliation:
Department of Electronics and Computer Engineering, Faculty of Engineering, Gifu University, Yanagido, Gifu 501–11, Japan
H. Azechi
Affiliation:
Institute of Laser Engineering, Osaka University, Yamadaoka, Suita, Osaka 565, Japan
H. Nakarai
Affiliation:
Institute of Laser Engineering, Osaka University, Yamadaoka, Suita, Osaka 565, Japan
S. Nakai
Affiliation:
Institute of Laser Engineering, Osaka University, Yamadaoka, Suita, Osaka 565, Japan

Abstract

In inertial confinement fusion experiments, the symmetrical implosion calls for a new scheme: a nonsupported pellet. In this article, the first experiment is conducted using a plastic pellet covered with thin ferromagnetic material. In the system, the digital-phase-lead-compensator takes the position-related signal and processes it to provide a driving signal for the magnetic suspender. The suspended pellet is irradiated by the Gekko XII laser, having its total energy 2700 J with pulse width 800 ps at the wavelength 0.53 μm. The X-ray pinhole photograph confirms the spherically symmetrical implosion at the pellet core. At irradiation, the neutron yield is also observed.

Type
Research Article
Copyright
Copyright © Cambridge University Press 1993

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References

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Sakagami, Y. et al. 1991 Progress report of laser fusion related experiments at Gifu University. Research report at the Faculty of Engineering at Gifu University, Vol. 41, p. 47.Google Scholar