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Effects of CH foam preplasma on fast ignition

Published online by Cambridge University Press:  13 March 2012

M. Hata ,
H. Sakagami ,
A. Sunahara ,
T. Johzaki  and
H. Nagatomo
M. Hata*
Affiliation:
Department of Physics, Nagoya University, Nagoya, Aichi, 464-8601, Japan
H. Sakagami
Affiliation:
Fundamental Physics Simulation Research Division, National Institute for Fusion Science, Toki, Gifu, 509-5292, Japan
A. Sunahara
Affiliation:
Institute for Laser Technology, Suita, Osaka, 565-0871, Japan
T. Johzaki
Affiliation:
Institute for Laser Technology, Suita, Osaka, 565-0871, Japan
H. Nagatomo
Affiliation:
Institute of Laser Engineering, Osaka University, Suita, Osaka, 565-0871, Japan
*
Address correspondence and reprint requests to: M Hata, Department of Physics, Nagoya University, Nagoya, Aichi, 464-8601, Japan. E-mail: [email protected]
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Abstract

Creation of a preformed plasma (preplasma) by heating laser prepulse is crucial to fast ignition. Because it is difficult to control the prepulse and preplasma, control of fast electron beam generation by low-density foam was recently reported. However, this simulation study ignored the foam preplasma. Therefore, we calculated foam preplasma formation using a hydrodynamic code and investigated the effects of the preplasma on fast ignition by using integrated simulations, including radiation hydrodynamic, Particle-In-Cell (PIC) and Fokker–Planck simulations. We conclude that the average core temperature decreased by approximately 10% in the integrated simulations of the foam preplasma case.

Keywords

Fast ignitionIntegrated simulationLow-density foamPreplasma
Type
Research Article
Information
Laser and Particle Beams , Volume 30 , Issue 2 , June 2012 , pp. 189 - 197
Copyright
Copyright © Cambridge University Press 2012

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