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Control of fuel target implosion non-uniformity in heavy ion inertial fusion

Published online by Cambridge University Press:  02 November 2016

T. Iinuma ,
T. Karino ,
S. Kondo ,
T. Kubo ,
H. Kato ,
T. Suzuki ,
S. Kawata  and
A.I. Ogoyski
T. Iinuma*
Affiliation:
Utsunomiya University, Graduate School of Engineering, Utsunomiya 321-8585, Japan
T. Karino
Affiliation:
Utsunomiya University, Graduate School of Engineering, Utsunomiya 321-8585, Japan
S. Kondo
Affiliation:
Utsunomiya University, Graduate School of Engineering, Utsunomiya 321-8585, Japan
T. Kubo
Affiliation:
Utsunomiya University, Graduate School of Engineering, Utsunomiya 321-8585, Japan
H. Kato
Affiliation:
Utsunomiya University, Graduate School of Engineering, Utsunomiya 321-8585, Japan
T. Suzuki
Affiliation:
Utsunomiya University, Graduate School of Engineering, Utsunomiya 321-8585, Japan
S. Kawata*
Affiliation:
Utsunomiya University, Graduate School of Engineering, Utsunomiya 321-8585, Japan
A.I. Ogoyski
Affiliation:
Department of Physics, Varna Technical University, Varna 9010, Bulgaria
*
Address correspondence and reprint requests to: T. Iinuma and S. Kawata, Utsunomiya University, Graduate School of Engineering, Utsunomiya 321-8585, Japan. E-mail: mt156204@cc.utsunomiya-u.ac.jp, kwt@cc.utsunomiya-u.ac.jp
Address correspondence and reprint requests to: T. Iinuma and S. Kawata, Utsunomiya University, Graduate School of Engineering, Utsunomiya 321-8585, Japan. E-mail: mt156204@cc.utsunomiya-u.ac.jp, kwt@cc.utsunomiya-u.ac.jp
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Abstract

In inertial fusion, one of scientific issues is to reduce an implosion non-uniformity of a spherical fuel target. The implosion non-uniformity is caused by several factors, including the driver beam illumination non-uniformity, the Rayleigh–Taylor instability (RTI) growth, etc. In this paper, we propose a new control method to reduce the implosion non-uniformity; the oscillating implosion acceleration δg(t) is created by pulsating and dephasing heavy-ion beams (HIBs) in heavy-ion inertial fusion (HIF). The δg(t) would reduce the RTI growth effectively. The original concept of the non-uniformity control in inertial fusion was proposed in [Laser Part. Beams (1993) 11, 757–768]. In this paper, it was found that the pulsating and dephasing HIBs illumination provide successfully the controlled δg(t) and that δg(t) induced by the pulsating HIBs reduces well the implosion non-uniformity. Consequently the pulsating HIBs improve a pellet gain remarkably in HIF.

Keywords

Heavy ion inertial fusionTarget implosionDynamic stabilizationWobbling beam
Type
Research Article
Information
Laser and Particle Beams , Volume 34 , Issue 4 , December 2016 , pp. 729 - 734
Copyright
Copyright © Cambridge University Press 2016 

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