Verification of gyrokinetic particle simulation of current-driven instability in fusion plasmas. III. Collisionless tearing mode

Journal Article · Mon Feb 15 00:00:00 EST 2016 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.4941094· OSTI ID:22493883

Liu, Dongjian ^[1]; Bao, Jian ^[2]; Han, Tao; Wang, Jiaqi ^[1]; Lin, Zhihong ^[3]

---

1. College of Physical Science and Technology, Sichuan University, Chengdu 610064 (China)
2. Fusion Simulation Center, Peking University, Beijing 100871 (China)
3. Department of Physics and Astronomy, University of California, Irvine, California 92697 (United States)

A finite-mass electron fluid model for low frequency electromagnetic fluctuations, particularly the collisionless tearing mode, has been implemented in the gyrokinetic toroidal code. Using this fluid model, linear properties of the collisionless tearing mode have been verified. Simulations verify that the linear growth rate of the single collisionless tearing mode is proportional to D{sub e}{sup 2}, where D{sub e} is the electron skin depth. On the other hand, the growth rate of a double tearing mode is proportional to D{sub e} in the parameter regime of fusion plasmas.

• OSTI ID: 22493883
• Journal Information: Physics of Plasmas, Vol. 23, Issue 2; Other Information: (c) 2016 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
COLLISIONLESS PLASMA
COMPUTERIZED SIMULATION
CURRENTS
ELECTROMAGNETIC RADIATION
ELECTRONS
FLOW MODELS
FLUCTUATIONS
GYROFREQUENCY
PARTICLES
TEARING INSTABILITY
VERIFICATION