CHIANTI

An Atomic Database for Spectroscopic Diagnostics of Astrophysical Plasmas.

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Naval Research Laboratory (USA) - Rutherford Appleton Laboratory (UK) - University College London - MSSL (UK)
University of Cambridge (UK) - George Mason University (USA) - Universita' degli Studi di Firenze (Italy)

CHIANTI consists of a critically evaluated set of up-to-date atomic data, together with user-friendly programs written in Interactive Data Language (IDL), to analyse the spectra from astrophysical plasmas. The CHIANTI package is freely available to all researchers.
If you use the package, we only ask you to appropriately acknowledge CHIANTI .



- The Chianti wine-producing area of Tuscany, Italy -

CHIANTI Version 5.1 Released ! 

CHIANTI 5.1 (Sept 2005) corrects for an error in the Fe dielectronic satellite lines in the 1.7-2.0 Angstroms range, and a few software bugs affecting isothermal calculations and the two-photon continuum.
CHIANTI 5 includes a few new physical processes, a number of improvements to the database, and much faster software. The most important changes concern the X-ray and the UV wavelength ranges, as well as a few crucial ions in the EUV . For more information read the NEWS file and the USER GUIDE.

Major features (Landi et al. 2005, ApJS, in press) in CHIANTI 5 are:

  • inclusion of ionization and recombination effects in level population calculation
  • photoexcitation from any user-provided radiation field
  • software to account for non-maxwellian distribution of velocities
  • new data for Fe IX, Fe X, Fe XII, Fe XV (EUV )
  • new data for Fe XVII to Fe XXIV (X-rays )
  • new data for n=3 to n=3 N-like and O-like transitions (UV )
  • new ions (P XIV, XV; Cl II, X, XI, XII, XVII; K V, XVII, XIX; Ca VII, VIII; Co XX; Zn XXIII)
  • many existing ion data-sets have been updated
  • the software has been improved and speeded considerably

We are grateful to individual scientists and funding agencies for their support.



Last revised by G. Del Zanna on 14-Sep-2005