Abstract
A particle simulation of an interchange instability was performed by taking into account the ion finite Larmor radius (FLR) effects. It is found that the interchange instability with large FLR grows in two phases, that is, linearly growing phase and the nonlinear phase subsequent to the linear phase, where the instability grows exponentially in both phases. The linear growth rates observed in the simulation agree well with the theoretical calculation. The effects of FLR are usually taken in the fluid simulation through the gyroviscosity, the effects of which are verified in the particle simulation with large FLR regime. The gyroviscous cancellation phenomenon observed in the particle simulation causes the drifts in the direction of ion diamagnetic drifts.
Highlights
The interchange instability is perhaps the most fundamental and basic magnetohydrodynamic (MHD) instability for magnetically confined plasma
The effects of finite Larmor radius (FLR) are usually taken in the fluid simulation through the gyroviscosity, the effects of which are verified in the particle simulation with large FLR regime
The magnetic surfaces created in the torus,3 for example, stabilize the interchange instability with the rotation of the magnetic field lines lying on the magnetic surface, which is the results of line tying effects
Summary
Except where otherwise noted, is licensed under a Creative Commons Attribution 3.0.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
