Bifurcation of heat transport in high temperature plasma

Katsumi Ida; Inagaki Shigeru; Ryuichi Sakamoto; Kimitaka Itoh; Kenji Tanaka; Hisamichi Funaba

doi:10.1143/JPSJ.77.124501

Bifurcation of heat transport in high temperature plasma

Katsumi Ida, Inagaki Shigeru, Ryuichi Sakamoto, Kimitaka Itoh, Kenji Tanaka, Hisamichi Funaba

Division of Nuclear Fusion Dynamics

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

5 Citations (Scopus)

Abstract

A second-order phase transition of heat transport, which is characterized by a discontinuity in the time derivative of the temperature gradient, is observed in the high temperature plasma when the radial heat flux is modulated by repetitive pellet injections. The temperature dependence of the heat flux changes at the phase transition between two transport branches: one has a strong temperature dependence as predicted by gyro-Bohm type transport and the other has a weak temperature dependence which is consistent with the transport with the "screened" effect of zonal flow.

Original language	English
Article number	124501
Journal	Journal of the Physical Society of Japan
Volume	77
Issue number	12
DOIs	https://doi.org/10.1143/JPSJ.77.124501
Publication status	Published - Dec 1 2008

All Science Journal Classification (ASJC) codes

Physics and Astronomy(all)

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10.1143/JPSJ.77.124501

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T1 - Bifurcation of heat transport in high temperature plasma

AU - Ida, Katsumi

AU - Shigeru, Inagaki

AU - Sakamoto, Ryuichi

AU - Itoh, Kimitaka

AU - Tanaka, Kenji

AU - Funaba, Hisamichi

PY - 2008/12/1

Y1 - 2008/12/1

N2 - A second-order phase transition of heat transport, which is characterized by a discontinuity in the time derivative of the temperature gradient, is observed in the high temperature plasma when the radial heat flux is modulated by repetitive pellet injections. The temperature dependence of the heat flux changes at the phase transition between two transport branches: one has a strong temperature dependence as predicted by gyro-Bohm type transport and the other has a weak temperature dependence which is consistent with the transport with the "screened" effect of zonal flow.

AB - A second-order phase transition of heat transport, which is characterized by a discontinuity in the time derivative of the temperature gradient, is observed in the high temperature plasma when the radial heat flux is modulated by repetitive pellet injections. The temperature dependence of the heat flux changes at the phase transition between two transport branches: one has a strong temperature dependence as predicted by gyro-Bohm type transport and the other has a weak temperature dependence which is consistent with the transport with the "screened" effect of zonal flow.

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JO - Journal of the Physical Society of Japan

JF - Journal of the Physical Society of Japan

IS - 12

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ER -

Bifurcation of heat transport in high temperature plasma

Abstract

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