Improvement of Potential Drop Predictions for Plasma Wind Tunnels by Cathode Sheath

Nomenclature A = Richardson constant, A= m K 2 d = sheath length, m E = electric field, V=m or energy flux,W=m e = elementary electric charge, C j = current density, A=m k = Boltzmann constant, J=K m = species mass, kg n = number density, 1=m T = temperature, K = field intensification coefficient i = secondary-electron emission coefficient = emissivity ion = ionization potential, eV = vacuum permeability, F=m = thermal conductivity, W= K m = Stefan–Boltzmann constant, J=K 0 = potential drop, V w = work function, eV