title test low-T Compton energy exchange
c
c commands controlling continuum =========
black linear 3 lte
brems 5
ionizat -5
c
c commands for density & abundances =========
hden -10
init file "hheonly.ini"
eden 0
c
c commands controlling geometry  =========
stop zone 1
set dr 0
c
c other commands for details     =========
set temperature convergence 0.0001
iterate 3
c
c commands controlling output    =========
save overview "limit_compton_lo_t.ovr"
save performance "limit_compton_lo_t.per"
save monitors last "limit_compton_lo_t.asr"
c
c commands giving the monitors    =========
monitor temperature hydrogen 2 3 linear error 0.01
//
// >>chng 01 may 07, chng in He+ H ct rate, from -44.962 to -44.610
// >>chng 02 nov 03, from -44.610 to -45.6454, new H2+ rate and high abund
// so much less atomic H
// >>chng 02 dec 10, from -45.645 to -45.835, better convergence, incr error
// >>chng 02 dec 21, from -45.835 to -44.612, new hmole
// >>chng 04 feb 21, from -44.612 to -47.819, add on CT recom with H-
// >>chng 07 oct 22, from -47.819 to -47.654, resolve l-levels of h-like sequence
monitor line luminosity "h  1" 4861 -47.654 error 0.2
//
// >>chng 04 jun 28, from -11.850 to -15.097, include H2 in fraction
// >>chng 05 nov 25, from -15.097 to -15.075, NA add mole grain freeze out
monitor ioniz hydrogen 2 -15.075
c limit_compton_lo_t.in
c class limit 
c ========================================
c 

This tests the code in the low temperature Compton limit.  The gas is
illuminated by a 3 K blackbody in thermodynamic equilibrium. 
The equilibrium temperature should be exactly 3 K. 
It is necessary to add an extra component of free electrons to
test the code in this limit with the eden command.