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Relaxation Phenomena in Gases
Electron Excitation Rates
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ambient temperature amplifier amplitude approximation assume Boltzmann distribution Boltzmann equation C02 laser C02 molecules calculated cavity collision frequency convective instability cross sections defined denote derived dispersion relation drift velocity elastic collisions electric field electron distribution electron energy electron mobility electron number density electron-molecule equilibrium excitation rates form of Eq gain gain-switched gas lasers gas mixture given by Eq Haas heavy-particle Hence inelastic initial input instability integral ionization kbig kinetic Manes and Seguin matrix molecules of type negative-ion neglected Nighan obtain odd function oscillator output mirror particles plasma population inversion processes pulse radiation rate coefficients rate equations rate of change reactions relaxation resonator result right-hand side rotational sublevel side of Eq solution solved species steady-state Subroutine substituted into Eq superelastic collisions term in Eq term of Eq transitions translational energy translational-rotational unit volume values variables vibrational level vibrational modes zero