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High Density

All level populations are affected by collision rates to and from the superlevels. These rates are calculated by fitting to more complete population kinetic calculations involving hundreds of levels; these fits are valid only up to (electron) densities of 10$^{18}$ cm$^{-3}$. Attempts to use densities greater than this will result in the code stopping with a message.

Tim Kallman 2018-12-14