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Journal Articles

Nonlinear behaviour of collisionless double tearing mode induced by electron inertia

Matsumoto, Taro; Naito, Hiroshi*; Tokuda, Shinji; Kishimoto, Yasuaki*

Nuclear Fusion, 45(11), p.1264 - 1270, 2005/11

 Times Cited Count:14 Percentile:43.56(Physics, Fluids & Plasmas)

A gyrokinetic particle simulation is executed to clarify the effect of the electron inertia on the MHD phenomena in the reversed shear configuration (RSC) of a cylindrical tokamak plasma. It is found that the collisionless (kinetic) double tearing modes grow up at the Alfv$'e$n time scale, and nonlinearly induce the internal collapse when the helical flux at the magnetic axis is less than that at the outer resonant surface. After the internal collapse, the secondary reconnection is induced by the current concentration due to the $$m=2$$ convective flow. It is also clarified that a nonlinear dynamics accompanied with the elementary processes caused by the $$m=2$$ flow can generate a new RSC with resonant surfaces. In the presence of the density gradient, after the full reconnection induced by the $$m=2$$ mode, the radial electric field is found to be generated due to the difference of the $${bf E} times {bf B}$$ motion between ions and electrons. However, the intensity of the radial field is not so large as that induced by the collisionless kink mode.

Journal Articles

Kinetic theory of global n=1 instabilities in toroidal plasmas

; *; ;

Journal of the Physical Society of Japan, 53(5), p.1759 - 1774, 1984/00

 Times Cited Count:2 Percentile:34.43(Physics, Multidisciplinary)

no abstracts in English

Journal Articles

Stability of ▽T$$_{e}$$-driven microscopic drift-tearing mode

; *

Journal of the Physical Society of Japan, 51(5), p.1639 - 1643, 1982/00

 Times Cited Count:0 Percentile:0.01(Physics, Multidisciplinary)

no abstracts in English

Journal Articles

Kinetic theory of helical instabilities in a cylindrical tokamak

*;

Nuclear Fusion, 21(1), p.3 - 12, 1981/00

 Times Cited Count:6 Percentile:30.17(Physics, Fluids & Plasmas)

no abstracts in English

Journal Articles

Critical conditions for drift, drift-alfven and drift-tearing instabilities of finite-$$beta$$ plasma in sheared magnetic field

*; ; *

Journal of the Physical Society of Japan, 48(3), p.973 - 982, 1980/00

 Times Cited Count:14 Percentile:70.74(Physics, Multidisciplinary)

no abstracts in English

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