#  xgear parameter configuration file (column style)

#  put your project title and description here

#  comments like this and empty lines are ignored by the loader programme
#  strings starting with '=' are unique case insensitive parameter keywords
#  subsequent whitespace separated values are loaded as parameters for that keyword
#  large numeric values can be entered in scientific notation, e.g. 1.0e+07
#  the order of keyword/parameter combinations in this file is is not important

#  command line parameters specified before -f will be overridden by values specified in this file
#  command line parameters specified after -f will override values specified in this file
#  xgear checks the validity of parameter values and quits with an error message if any are invalid

#  string parameters with a single value for path/filenames and labels

=source			#  source or target label
TMC-1_north

=rateFile		#  reaction rate path/filename
ratefiles/rates.dat

=specFile		#  species and initial abundances path/filename
ratefiles/specs.dat

#  numeric parameters that can each take up to 10 values

=tempKin		#  kinetic temperature (K)
10
20
30

=nH2			#  density n(H2) (cm-3)
1000
10000

=iaFact			#  initial abundance factor
1.0
5.0

=criFact		#  CRI rate factor
1.0
10.0
20.0

=uvFact			#  UV field factor
1.0
20.0
40.0

=eav			#  extinction Av (mag)
1.0
2.0
3.0

#  standard numeric parameters with a single value: by default xgear uses the 
#  values defined in xgear.h which may also define minimum and maximum ranges
#  uncomment the next lines to specify different parameter values

#  =tLast	1.0e+07			#  time in years since t=0
#  =gAlbedo	0.6			#  dust grain albedo in far UV (for CRPHOT)
#  =dRatio 	1.75e-05		#  underlying D/H ratio
#  =criRate	1.3e-17			#  cosmic ray ionisation (CRI) rate (s-1)
#  =uvField	5.0e-17			#  UV field at 1400 A (erg cm-3 A-1)

#  single value parameters for grain surface formation of H2 and HD

#  =gasDust	100			#  gas to dust ratio
#  =dustDen	3.0			#  dust density ratio
#  =surfD	7.9e+14			#  density of sites on grain surface (cm-2)
#  =gRad	1.0e-05			#  grain radius (cm)

#  reaction rate parameters that can not be defined in rate files
#  by default xgear uses the hardcoded values defined in xgear.h
#  uncomment the next lines to specify different parameter values

#  =dfrac		#  deuterium fractionation reactions:
#  1.7E-09		#  H3+ + HD --> H2D+ + H2 forward reaction rate
#  0.00981473		#  H2D+ + H2 --> H3+ + HD for the reverse reaction
#  1.23309		#  k includes an equilibrium constant which is T dependent
#  99.628		#  (see Markwick et al. A&A, 376, 1054, 2001, sec. 3.2, eq. 19)

#  =nplus
#  23.1083		#  N+ + H2 --> NH+ + H
#  9.1554

#  to avoid running too many models you can define the maximum number of models per run

=maxMods		#  maximum number of models per run
25

#  end of file