dcdis.inp { current driven dc discharge in argon } Variables { L = 0.1 // length in m R = 0.05 // outer radius in m I = 0.0001 // current in A p = 0.1 // pressure in Torr n0 = 3e12 // initial density dt = 1e-10 // timestep in sec np2c = 2e5 // physical/computer particle ratio } Region { Species { name = electrons m = 9.11E-31 q = -1.6E-19 collisionModel=electron } Species { name = argon m = 6.67e-26 q = 1.6E-19 collisionModel=ion subcycle=2 } Grid { J = 64 x1s = 0.0 x1f = L n1 = 1.0 K = 32 x2s = 0.0 x2f = R n2 = 1.0 } Control { dt = dt ElectrostaticFlag = 4 } MCC { gas = Ar pressure = p eSpecies = electrons iSpecies = argon } Conductor { A1 = L A2 = 0 B1 = L B2 = R name = Cathode normal = -1 Secondary { secondary = 0.2 secSpecies = electrons iSpecies = argon } } CurrentSource { C = I phase = 0 A1 = 0 A2 = 0 B1 = 0 B2 = R name = Anode normal = 1 Secondary { secondary = 0.2 secSpecies = electrons iSpecies = argon } nxbins=60 nenergybins=60 nthetabins = 30 energy_min = 0 energy_max = 200 } Diagnostic { A1 = 0 A2 = R/2 B1 = 0 B2 = R/2 title = Anode Voltage VarName = phi HistMax = 2048 Comb = 2 } Dielectric { er = 1.0 A1 = 0 A2 = R B1 = L B2 = R name = OuterWall normal = -1 Secondary { secondary = 0 secSpecies = electrons iSpecies = argon } } CylindricalAxis { A1 = 0 A2 = 0 B1 = L B2 = 0 normal = 1 } Load { x1MinMKS = 0 x1MaxMKS = L x2MinMKS = 0 x2MaxMKS = R speciesName = electrons density = n0 np2c = np2c LoadMethodFlag =1 units = EV temperature = 4 } Load { x1MinMKS = 0 x1MaxMKS = L x2MinMKS = 0 x2MaxMKS = R speciesName = argon density = n0 np2c = np2c LoadMethodFlag=1 units = EV temperature = 0.025 } }