Global (0D) model
Balances of every species, the electron energy and the gas temperature, averaged over a chamber: reactions, Bohm losses through the walls and magnetic cusps, wall recombination, feed, pumping and beam sources. Steady states in seconds.
1D fluid model
Drift-diffusion of every species with Scharfetter-Gummel fluxes, the electron energy and Poisson’s equation, fully implicit; walls, prescribed densities or fluxes at either end, changeable between steps.
The data of the kinetic codes
Rates come from plasmacoll’s cross sections averaged over a Maxwellian, the data its Monte Carlo collisions use: a fluid and a kinetic model of the same plasma differ in their physics, not their data.
Checked against closed forms
The textbook global model, ambipolar diffusion, attachment-detachment balance, wall recombination, and particle and energy conservation to round-off.