title test open geometry 
//TODO put continuum points - esp pick up two-photon continuum,
// which should be strong in this model due to low density
c
c commands controlling continuum =========
ionization -2
blackbody 40000
c
c commands for density & abundances =========
hden 0
init file "honly.ini"  
c
c commands controlling geometry  =========
stop efrac 0.05 %stop when 5 percent ionized 
filling 0.01
c
c other commands for details     =========
diffuse outward
iterate
atom h-like levels resolved 15
no level2
no induced processes (OK) 
constant temper 4
c
c commands controlling output    =========
c normally will not print out inward parts of lines
print line inward
normalize to "Ca B" 4861 = 1 % normalize to exact result 
save performance "h_outopen.per"
save overview  "h_outopen.ovr" last
save monitors  "h_outopen.asr" last
save dr  "h_outopen.dr" last
c
c commands giving the monitors    =========
c this is an open geometry, so do not expect H atom to exactly be case B
c due to Lyman line leakage.  we iterated, so have a good estimate of
c inward and outward fractions, which we test 
monitor line "Q(H)" 4861 > 1. error 0.02 %>1 due to lyman line leaking
monitor line "H  1" 4861 = 1 error 0.02 %no surprise if not unity, since open
// 
monitor line "Inwd" 4861 =0.5 error 0.02 
// 
// >>chng 01 sep 24, from 24.8 to 23.4, 2s 2p br -> 2nu chng
// >>chng 03 may 16, from 23.4 to 21.9, h line rt cleanup
// >>chng 03 may 16, from 21.9 to 20.5, damp pump, 1 per zone
// >>chng 07 jan 20, from 20.5 to 22.0 e2 bug
// >>chng 09 jun 26, from 22 to 23.29, remove several dampers
monitor line "H  1" 1216 23.29 % lya alpha
// 
// >>chng 08 may 01 rm lots of redundant tests
c h_outopen.in
c class limit 
c ========================================
c 


This tests the total emission from an open geometry, 
hydrogen Stromgren sphere,
using the outward only approximation.  The conservation of the total number
of ionizing photons, and the emitted spectrum, are all checked.