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subroutine oneline (imode)
c******************************************************************************
c This routine computes a single line profile
c******************************************************************************
implicit real*8 (a-h,o-z)
include 'Atmos.com'
include 'Linex.com'
include 'Dummy.com'
real*8 dinteg(200)
data waveold /0.0/
c*****set an arbitrary maximum # of wavelength points to compute
c the line profile
maxsteps = 100
c*****get started; calculate an initial step size; wavestep only is
c*****used in synpop
if (imode .eq. 0) gf1(ncurve) = gf(lim1)
dellam(1) = 0.
if (wavestep .eq. 0.) then
st1 = wave1(lim1)*dopp(lim1,jtau5)/2.997929e10/5.
st1 = dfloat(ifix(10000.*sngl(st1)))/10000.
else
st1 = wavestep
endif
storig = st1
c*****calculate continuous opacity and intensity/flux at line wavelength
wave = wave1(lim1)
if (abs(wave-waveold) .gt. 30.) then
waveold = wave
call opacit(2,wave)
if (imode.ne.2 .and. modprintopt.ge.2)
. write(nf1out,1002) wave,(kaplam(i),i=1,ntau)
call cdcalc(1)
first = 0.4343*cd(1)
flux = rinteg(xref,cd,dummy1,ntau,first)
if (imode .ne. 2) then
if (iunits .eq. 1) then
write (nf1out,1003) 1.d-4*wave,flux
else
write (nf1out,1004) wave,flux
endif
endif
endif
c*****check the wavelength step size; expand/contract as necessary
if (wavestep .eq. 0.) then
wave = wave1(lim1)
call taukap
call cdcalc(2)
first = 0.4343*cd(1)
d(1) = rinteg(xref,cd,dummy1,ntau,first)
do k=1,30
if (k .eq. 30) then
write (*,1010) wave
stop
endif
wave = wave1(lim1) + 5.*st1
call taukap
call cdcalc(2)
first = 0.4343*cd(1)
d(2) = rinteg(xref,cd,dummy1,ntau,first)
d2d1 = d(2)/d(1)
if (d2d1 .le. 0.2) then
st1 = st1/1.5
elseif (d2d1 .le. 0.6) then
st1 = st1/1.2
elseif (d2d1.gt.0.60 .and. d2d1.lt.0.80) then
if (imode .ne. 2) write (nf1out,1001) lim1,
. 1000.*width(lim1), storig, st1, k
exit
elseif (d2d1 .ge. 0.80) then
st1 = st1*1.6
elseif (d2d1 .ge. 0.90) then
st1 = st1*2.1
endif
st1 = dble(idnint(10000.*st1))/10000.
enddo
endif
c*****calculate wavelength dependent line quantities, and the line depth
c until the depth is very small in the line wing
wave = wave1(lim1)
do n=1,maxsteps
dellam(n) = (n-1)*st1
wave = wave1(lim1) + dellam(n)
call taukap
call cdcalc(2)
first = 0.4343*cd(1)
d(n) = rinteg(xref,cd,dummy1,ntau,first)
if (linprintopt.ge.3 .and. n.eq.1 .and. imode.eq.2) then
do i=1,ntau
dummy1(i) = xref(i)*cd(i)
enddo
first = 0.
cdmean = rinteg(xref,dummy1,dummy2,ntau,first)/
. rinteg(xref,cd,dummy2,ntau,first)
do i=1,ntau
if (cdmean .lt. cd(i)) exit
enddo
write (nf1out,1005) lim1, cdmean, i, xref(i)
do i=1,ntau
if (taunu(i)+taulam(i) .ge. 1.) exit
enddo
write (nf1out,1006) lim1, i, dlog10(tauref(i)),
. dlog10(taulam(i)), dlog10(taunu(i))
endif
if (d(n)/d(1) .lt. 0.0050) then
ndepths = n
exit
endif
if (n .eq. maxsteps) then
if (d(n).gt.0.001 .and. imode.ne.2) then
write (nf1out,1007)
ndepths = maxsteps
endif
endif
enddo
c*****finish the calculation
if (imode .ne. 2) write (nf1out,1008) (d(j),j=1,ndepths)
do n=2,ndepths
d(ndepths+n-1) = d(n)
enddo
d(ndepths) = d(1)
do n=2,ndepths
d(n-1) = d(2*ndepths+1-n)
enddo
dellam(1) = -st1*(ndepths-1)
ndep = 2*ndepths - 1
do n=2,ndep
dellam(n) = dellam(n-1) + st1
enddo
first = 2*dellam(ndep)*d(ndep)
w(ncurve) = rinteg(dellam,d,dinteg,ndep,first)
if (imode .ne. 2) then
ew = 1000.0*w(ncurve)
gflog = dlog10(gf1(ncurve))
rwlog = dlog10(w(ncurve)/wave1(lim1))
write (nf1out,1009) wave1(lim1), ew, rwlog, gf1(ncurve), gflog
endif
return
c*****format statements
1001 format (/'LINE ', i5, ':', 5x, 'observed EW to match: ', f7.2/
. 16x, 'lambda step initial, final: ', 2f7.4/
. 16x, 'trials needed to decide this: ', i2)
1002 format (' kaplam from 1 to ntau at wavelength',f10.2/
1 (6(1pd12.4)))
1003 format ('AT WAVELENGTH/FREQUENCY =',f11.7,
. ' CONTINUUM FLUX/INTENSITY =',1p,d12.5)
1004 format ('AT WAVELENGTH/FREQUENCY =',f11.3,
. ' CONTINUUM FLUX/INTENSITY =',1p,d12.5)
1005 format (/'LINE ', i5, ':',
. ' weighted mean line contribution function C_d =',
. f6.2/ ' which occurs near level ', i3,
. ' with log tauref = ', f6.2)
1006 format (/'LINE ', i5, ':',
. ' tau(total) is greater than 1 at level',i3/
. ' logs of tauref, taulam, taunu =', 3f6.2)
1007 format ('WARNING: not enough points to specify the line?')
1008 format (10f7.3)
1009 format ('lambda =',f12.3,5x,'E.W. =',f8.2,' mA.',5x,
. 'log(R.W.) =',f6.2/'gf =',1pd10.3,5x,'log(gf) =',
. 0pf7.2)
1010 format ('CANNOT DECIDE ON LINE WAVELENGTH ',
. 'STEP SIZE FOR', f10.2, ' I QUIT!')
1011 format ('original and final wavelength step size: ', 2f8.4)
end
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