title background cosmic ray ionization by suprathermal electrons only
c
c commands controlling continuum =========
cosmic ray rate -16
c this will be VERY faint black 50000
ionization parameter -25
black 50000 
c
c commands for density & abundances =========
hden 5
element hydrogen ionization 1 0.00000001
c
c commands controlling geometry  =========
set dr 0 
stop zone 1
c
c other commands for details     =========
constant temperature 1000 K
c turn off molecules to test only ions 
no molecules 
c must turn off charge transfer and its heating, which would dominate,
c since we want to test cr heating and ionization
no charge transfer
no ctheat
c must turn of  photoionization by recombining species,
c since we want to test cr heating and ionization
no photoionization
c any time photoionization is turned off, it is best to also
c turn off induced processes, which include pumping in the lyman lines
no induced processes
c
c commands controlling output    =========
print ages
// >>chng 01 may 11, model was changed to test only secondary ionization,
// its intended purpose
save overview "ism_set_cr_rate.ovr"
save performance "ism_set_cr_rate.per"
save monitors "ism_set_cr_rate.asr" last
c
c commands giving the monitors    =========
//
// this is log of H0 ionization rate
monitor csupra -16.00
//
// total heating
// uncertain since depends on collider density
// >>chng 11 nov 16, from -22.04 to -22, adjust newmole monitors
monitor htot -22.00
//
// >>chng 11 nov 16, from -22.04 to -22, adjust newmole monitors
monitor line "cr h" 0  luminosity -22
// 
// >>chng 08 jul 26, add two hyperfine stucture lines 
// asserted values not yet set
monitor line "H  1" 21.10c  luminosity -26.696
monitor line "Mg 2" 16.00c  luminosity -35.662
//
monitor ionization helium 2 -4.14 error 0.1
//
// >>chng 06 mar 05, from -4.27 to -8.05, NA add C+ - (Mg0 Fe0) CT
// >>chng 08 dec 18, from -8.05 to -4.27, prev chg reversed; CT now properly killed
monitor ionization carbon 2 -4.27 error 0.1
//
// >>chng 06 mar 05, from -4.50 to -7.19, NA add C+ - (Mg0 Fe0) CT
// >>chng 08 dec 18, from -7.19 to -4.50, prev chg reversed; CT now properly killed
// >>chng 11 jul 12, from -4.5 to -4.304, update to head of branch, without new coll DR suppression
// >>chng 12 jul 01, from -4.304 to -4.76, update Badnell DR to 13-electron iso sequence
// >>chng 12 aug 24, from -4.76 to -4.836, BUGFIX r6603 DR rates not updated in const temp sim
// >>chng 13 feb 02, from -4.836 to -4.967, BUGFIX, largely undo r6703 
monitor ionization silicon 2 -4.967 error 0.1
//
// >>chng 06 feb 07, from -4.02 to -3.97, add exp to low-T DR 
// >>chng 11 apr 22, from -3.97 to -4.042, update Ar sequence Badnell DR rates
// >>chng 11 jul 12, from -4.042 to -3.987, enable fit to Badnell DR suppression
// >>chng 13 feb 02, from -3.987 to -4.029, BUGFIX, largely undo r6703 
monitor ionization iron 2 -4.029 error 0.1
//
c ism_set_cr_rate.in
c class limit 
c ========================================
c 

This test conditions of cosmic ray ionization.  Molecules and charge transfer
are disabled so that analytical estimates can be made.