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Last modified: Tue Jan 4 12:52:37 2011.
Project : CHIANTI
CHIANTI is an atomic database package for the calculation of
continuum and emission line spectra from astrophysical plasmas. It is a
collaborative project involving the Naval Research Laboratory
(Washington DC, USA), the Arcetri Observatory (Firenze, Italy), and the
Cambridge University (United Kingdom).
Name : USE_CHIANTI
Purpose : Sets up system variables for use of CHIANTI routines
Explanation : The CHIANTI software uses system variables
that have to be defined. This routine is called by the
CHIANTI routines if these system variables are not defined.
** If one is using the solar-soft package, these should
already be defined*****.
** If the CHIANTI package is used as stand-alone, then
this routine can be used for the setup with e.g.:
use_chianti,'/home/data/chianti/'
if /home/data/chianti/ points to the actual place where
the CHIANTI top directory is.
Use : IDL> use_chianti, '/home/data/chianti/', $
[ioneq= , abund=]
Inputs : None
Opt. Inputs : The full pathname of the CHIANTI top directory.
Outputs : None
Opt. Outputs: None
Keywords : IONEQ - to define the default ionization eq. file to be used.
ABUND - to define the default abundance file to be used.
Calls : None
Common : None
Restrictions: None
Side effects: None
Category :
Prev. Hist. : Based on use_dere_chianti, written by C D Pike, RAL
Written : Giulio Del Zanna (GDZ) DAMTP (University of Cambridge, UK)
Modified : Version 1, GDZ 10-Oct-2000
Version 2, GDZ 10-Jan-2001
added the definition of the !abund_file
V. 3, GDZ, 2-May-2002 Modified substantially, adding a new
system variable.
V.4, 10-July-2002 GDZ
Removed the definition of !chianti_top, upon request.
V.5, 25-July-2002, GDZ
Fixed a problem with IDL versions earlier than 5.3 (the routine
would not compile). ALso, introduced the use of concat_dir for
cross-platform compatibility.
V.6, 06-Aug-02 GDZ
Changed the use of CHIANTI system variables. Added comments on
the which CHIANTI version is used.
V.7 12-Aug-02 GDZ Changed default abundance file. Removed '***'
V.8, GDZ 13-Feb-2003
Changed default ioneq file, to include ALL the elements.
V.9, 12-Aug-2005, GDZ
Changed default ioneq file from mazzotta_etal_ext to
mazzotta_etal_9.ioneq where ion fractions have been extended
up to 10^9 K. This is useful to avoid steps in the
emissivities at high-temperatures.
V.10, 19-Sept-2005, GDZ
made last version backward-compatible.
v.11, 3-Jun-2009, GDZ
made the new v.6 ioneq the default.
Version : V.11, 3-Jun-2009
(See setup/use_chianti.pro)