m_i = 1 * m0 # Charge of electron and ion: e_e = -1 * e0 e_i = 1 * e0 mass = [m_e, m_i] boltzmann_constant = k0 charge = [e_e, e_i] # Background Quantities: density_background = 1 * n0 temperature_background = 1 * T0 # Velocity, length and time scales: v0 = velocity_scales.alfven_velocity(B0, density_background, m0, mu) l0 = np.pi # Box Length t0 = l0 / v0 # Setting the length of the box: L_x = L_y = l0 # Setting delta_v of the Phase Space Grid: v_max_e = 0.22 * v0 v_max_i = 0.07 * v0 # Calculating Permittivity: c = 5 * v0 eps = 1 / (c**2 * mu) # Velocity Scales:
mass = [m_e] boltzmann_constant = k0 charge = [e_e] # Boundary conditions for the density and temperature of left zone, # Setup as initial conditions throughout domain: n_left = 1 * n0 T_left = 1 * T0 plasma_beta = 100 # β = p / (B^2 / 2μ) # Setting magnetic field along x using plasma beta: B1 = np.sqrt(2 * mu * n_left * T_left / plasma_beta) # Velocity, length and time scales: t0 = 1 / time_scales.cyclotron_frequency(B1, e_i, m_i) v0 = velocity_scales.alfven_velocity(B1, n_left, m_i, mu) l0 = v0 * t0 # ion skin depth # Setting permeability: c = 300 * v0 # |c| units(c) eps = 1 / (c**2 * mu) # Setting bulk velocity of left boundary: # Also setup as initial conditions throughout domain: v1_bulk_left = 1 * v0 # Time parameters: N_cfl = 0.1 t_final = 200 * t0 # Switch for solver components:
