(a) In an Argon plasma, the argon pressure is 7.7 torr at 350 K, and the electron density is 4.3 x 1012 cm3. Assuming a Maxwellian electron energy distribution with Te 2 eV, calculate the rate constants for elastic scattering, electronic excitation and electron impact ionization from the simplified cross-sections given in the graph. Repeat you calculations for Te = 6 eV. Comment on your results. IE-14 1E-15 Elastic Scattering - Electronic Excitation - Impact Ionization IE-16 1E-17 IE-18 10 15 20 25 Electron Energy (eV) (b) Determine the electron temperature at which the rate constants for excitation and ionization are equal. Cross Section (cm)