Table 1 Physical and numerical parameters used in the simulations.

Radial position \(\rho\)

0.25

0.5

0.6

0.75

Safety factor q

1.00

1.41

1.70

2.39

Magnetic shear \(\hat{s}\)

0.231

0.885

1.23

1.84

Temperature gradient \(R/L_T\)

5.1 to 12

4.7 to 12

4.25 to 12

4.2 to 9

Density gradient \(R/L_n\)

2.2

2.2

2.2

2.2

Collisionality \(\nu _{ii}^*\)

0.056

0.056

0.056

0.056

Minimum wavenumber \((\Delta k_x, \Delta k_y)\)

(0.054, 0.075)

(0.069,0.075)

(0.073,0.075)

(0.072,0.075)

\(\varvec{k}\)–space grid number \((n_{k_x}, n_{k_y})\)

(\(\pm 24,20\))

(\(\pm 64,20\))

(\(\pm 96,20\))

(\(\pm 128,20\))

Field line grid number \(n_z\)

64

64

64

64

Velocity–space grid number \((n_{v_\parallel }, n_\mu )\)

(\(\pm 24\),12)

(\(\pm 24\),12)

(\(\pm 24\),12)

(\(\pm 24\),12)