maser abort
user Wing-Fai on groups.io reports the attached model aborts due to maserdr.in The sim starts quite hot and undergoes a significant decrease in Te before the abort. The ionization was changing dramatically and dr was decreasing in the last few zones. The abort is likely due to the zone thickness not resolving a front.
This does not seem to be a model of a physical situation but is an interesting test of the code in an extreme case.