The CHIANTI atomic database


An Atomic Database for Spectroscopic Diagnostics of Astrophysical Plasmas.

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George Mason University (USA) - University of Michigan (USA) - University of Cambridge (UK) - NASA Goddard Space Flight Center (USA)

Download CHIANTI

The CHIANTI package is currently distributed in two ways: We recommend IDL users to use CHIANTI within the SolarSoft environment and to setup automatic upgrades (see SolarSoft site for details). If you do not want to use SolarSoft, then instructions are given below for downloading the database and IDL routines.

CHIANTI as a stand-alone package

Both IDL and Python users should download the database files:

Please check the IDL and Python links below for what to do with the database file.

IDL users (standalone)

Download the CHIANTI-IDL procedures below:

Once you download the database and IDL files, please follow the instructions for installation.

For more details on using the CHIANTI IDL routines, please consult the CHIANTI User Guide.

IDL users can download a set of population lookup tables that make some calculations much faster (see CHIANTI Technical Report No. 16).

Put them in a local directory and point to them with the environment variable $CHIANTI_LOOKUP.

Python users

ChiantiPy is distributed through GitHub (recommended). It is also available on the Python Package Index PyPI.

Please check the instructions on these pages to set up the database tar file.

If you use CHIANTI through SolarSoft

If you use CHIANTI through SolarSoft, please follow the instructions for installation.