### Abstract

The kinetic theory of the global n=1 instabilities of finite-pressure tokamak plasmas with circular cross-section is investigated in collisionless limit (m, n: poloidal and toroidal mode numbers). Wave-particle interactions and finite gyroradius effect are included. The radial-poloidal eigenmode equations are directly solved numerically. The m=1 internal/tearing mode, n= 1 ballooning mode and m= 2 tearing mode are identified with a fixed boundary condition. The m=1 internal mode turns out to be the collisionless tearing mode in low pressure regimes. The pressure driven ballooning mode is connected with the electrostatic-like ballooning mode. The toroidal coupling further stabilizes the m = 2 tearing mode, which is destabilized by the parallel current and can be stabilized by coupling with drift branch. Analytical studies are made by using the energy integral.

Original language | English |
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Pages (from-to) | 1759-1774 |

Number of pages | 16 |

Journal | journal of the physical society of japan |

Volume | 53 |

Issue number | 5 |

DOIs | |

Publication status | Published - Jan 1 1984 |

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### All Science Journal Classification (ASJC) codes

- Physics and Astronomy(all)

### Cite this

*journal of the physical society of japan*,

*53*(5), 1759-1774. https://doi.org/10.1143/JPSJ.53.1759

**Kinetic Theory of Global n=1 Instabilities in Toroidal Plasmas.** / Itoh, Kimitaka; Itoh, Sanae; Tlda, Takashi; Tokloa, Shinji.

Research output: Contribution to journal › Article

*journal of the physical society of japan*, vol. 53, no. 5, pp. 1759-1774. https://doi.org/10.1143/JPSJ.53.1759

}

TY - JOUR

T1 - Kinetic Theory of Global n=1 Instabilities in Toroidal Plasmas

AU - Itoh, Kimitaka

AU - Itoh, Sanae

AU - Tlda, Takashi

AU - Tokloa, Shinji

PY - 1984/1/1

Y1 - 1984/1/1

N2 - The kinetic theory of the global n=1 instabilities of finite-pressure tokamak plasmas with circular cross-section is investigated in collisionless limit (m, n: poloidal and toroidal mode numbers). Wave-particle interactions and finite gyroradius effect are included. The radial-poloidal eigenmode equations are directly solved numerically. The m=1 internal/tearing mode, n= 1 ballooning mode and m= 2 tearing mode are identified with a fixed boundary condition. The m=1 internal mode turns out to be the collisionless tearing mode in low pressure regimes. The pressure driven ballooning mode is connected with the electrostatic-like ballooning mode. The toroidal coupling further stabilizes the m = 2 tearing mode, which is destabilized by the parallel current and can be stabilized by coupling with drift branch. Analytical studies are made by using the energy integral.

AB - The kinetic theory of the global n=1 instabilities of finite-pressure tokamak plasmas with circular cross-section is investigated in collisionless limit (m, n: poloidal and toroidal mode numbers). Wave-particle interactions and finite gyroradius effect are included. The radial-poloidal eigenmode equations are directly solved numerically. The m=1 internal/tearing mode, n= 1 ballooning mode and m= 2 tearing mode are identified with a fixed boundary condition. The m=1 internal mode turns out to be the collisionless tearing mode in low pressure regimes. The pressure driven ballooning mode is connected with the electrostatic-like ballooning mode. The toroidal coupling further stabilizes the m = 2 tearing mode, which is destabilized by the parallel current and can be stabilized by coupling with drift branch. Analytical studies are made by using the energy integral.

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U2 - 10.1143/JPSJ.53.1759

DO - 10.1143/JPSJ.53.1759

M3 - Article

VL - 53

SP - 1759

EP - 1774

JO - Journal of the Physical Society of Japan

JF - Journal of the Physical Society of Japan

SN - 0031-9015

IS - 5

ER -