The plasma collisionality ν ν ∗ ∗ is defined as ν ν ∗ ∗ = ν ν e i m e k B T e 1 ϵ ϵ 3 2 q R , where ν ν e i denotes the electron-ion collision frequency, R is the major radius of the plasma, ϵ ϵ is the inverse aspect-ratio, and q is the safety factor. The plasma parameters m i and T i denote, respectively, the mass and temperature of the ions, and k B is the Boltzmann constant.