title test against Van Blerkom and Hummer, fig 4
diffuse ots
c test hydrogen ground state rec effic against vb+h exact results
c this is their case e) - "zero condition"
c their answer for H0/Htot at the illuminated edge is approx 5.8E-4,
c and a Stromgren radius of approximately 7.7E16 cm
hden 4
blackbody 50,000k
phi(h) 12.30103
stop eden 3.5
constant temper 4
abundances all -10
print last iteration
iterate
c vbhum.in