This is the legacy website for the Atomic and Molecular Data Unit.
The latest information about our activities can be found at https://amdis.iaea.org.
Existing data services at this location function as usual.

Online Computing Tools on Atomic, Molecular and Plasma-Surface Interactions

There are still important processes for which no reliable data have been measured or calculated. The purpose here is to provide easy tools to calculate some missing data.

Heavy Particles collisions (HEAVY)

Cross sections for excitation and charge transfer for collisions between hydrogenic targets and bare ions can be calculated online. Potential users are asked to request a user name and password.

Average Approximation (AAEXCITE)

is an interface to average approximation cross sections for calculating electron impact cross sections for atomic ions. This is expected to be useful in generating cross sections of reasonable accuracy when more accurate cross section data is not available.

Rate coefficients (RATES)

Results from collisional radiative calculations of plasmas carried out with the Los Alamos modeling codes are available. Interpolations allow the user to obtain total radiated power, average ion charge, and relative ionization populations in a steady state plasma.

Los Alamos atomic physics codes (LANL)

An interface is available to run several Los Alamos atomic physics codes for calculation of atomic structure, electron impact excitation, as well as ionization processes. Since 2010, atomic data sets of argon, chlorine and silicon produced by a group at LANL can be downloaded for all ionization stages.

NLTE Kinetics Code (FLYCHK)

An interface is available to run FLYCHK code available at NIST. The FLYCHK code generates atomic level populations and charge state distributions for low-Z to mid-Z elements under NLTE(Non-Local Thermodynamic Equilibrium) conditions.

FAC(Flexible Atomic Code) Data (FAC)

A complete set of collisional and radiative data of atoms from Z=2 (Helium) to Z=14(Silicon) is generated using the FAC (Flexible Atomic Code, developed by M. F. Gu). The atomic data set includes cross-sections of electron excitation, ionization, radiative decay and recombination and autoionization rates as well as atomic level energies.

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