Fundamental Physical Constants

• The NIST Reference on Constants, Units, and Uncertainty

• NIST Atomic Spectroscopic Data: Energy levels, wavelengths and transition probabilities of atoms and ions.
• NIST Atomic Spectroscopic Data List
• IAEA GENIE (A General Internet Search Engine for Atomic Data): Transition probabilities, wavelengths, energy levels, and electron impact cross sections and/or Rate coefficients.
• NIST Molecular Spectroscopic Data: Wavenumber tables for calibration of Infrared spectrometers and frequencies for interstellar molecular microwave transitions.
• TOPbase (The Opacity Project): Wavelength, energy level, oscillator strength, opaicty, and photoionization cross sections
• CHIANTI, An Atomic Database for Spectroscopic Diagnostics of Astrophysical Plasmas
• Center for Astrophysics, Atomic and Molecular Physics Division: Atomic and molecular data for astronomy and aeronomy. Wavelength, energy levels, and so on.
• GRIEM: Stark broadening parameters and electron impact widths and sifts.
• COREX database, Uppsala University, Sweden: Core edge (inner shell) excitation spectra

• NIFS: AMDIS, CHART, SPUTY, BACKS: collisional excitation, ionization, recombination, charge transfer, sputtering, and backscattering data.
• IAEA GENIE (A General Internet Search Engine for Atomic Data): Transition probabilities, wavelengths, energy levels, and electron impact cross sections and/or Rate coefficients.
• NIST: Electron-Impact Ionization Cross Section Database for Molecules
• IAEA ALADDIN database: Collsional data, H Neutral Beam Data, Particle-Surface Interaction Data, and Data for Elementary Processes in H-He Plasmas.
• The ORNL CFADC "Redbooks"
• JAERI: JEAMDL: Evaluated data
• TIPbase (The IRON Project): publication list for the IRON Project. Collisional excitation rate coefficients etc.
• Atomic Data for Astrophysics, Univ. Kentucky, USA: Photoionization, recombination, collisional ionization, autoionization, charge transfer, auger processes, energy levels, wavelengths, transition probabilities stark broadening, and opacities.
• Atomic and Molecular Database at Institute of Applied Physics and Computational Mathematics, China

• IAEA Nuclear Data Services: Evaluated nuclear reaction data library, etc.
• NIST: Radionuclide Half-Life Measurements Made at NIST
• NIST: Atomic Weights and Isotopic Compositions
• JAERI: Nuclear Data: Evaluated nuclear data libraries, etc.

Spectroscopy

• NIST: Atomic Transition Probability Bibliographyics Database
• STARK, Obserbatoire de Paris-Section de Meudon: Bibliography on Atomic Line Shapes and Shifts

• IAEA: AMBDAS
• GAPHYOR: Various processes for atoms, ions and molecules (structure, phtonic collisions, electron collisions, atomic and moleuclar collisions
• The ORNL CFADC Bibliography

• A+M Data Unit, IAEA, Austria
• GAPHYOR, France
• PMI Data Unit, Max-Planck-Institut fur Plasmaphysik, Germany
• PMI Data Centre, D.V. Efremov Scientific Research Institute of Electrophysics Apparatus, Russian Federation
• A+M Data Unit, Troitsk Institute of Innovation and Fusion Research, Russian Federation
• Institute for Fusion Research, Scientific Research Centre "Kurchatov Institute", Russian Federation
• A+M Data Branch, ENEA - "C.R.E.Clementel", Italy
• Plasma Laboratory, Weizmann Institute of Science, Israel There are full lists of www sites for atomic and plasma physics.
• Controlled Fusion Atomic Data Center, ORNL, USA
• Data Centre for Atomic Energy Levels, NIST, USA
• JAERI, Japan
• Data and Planning Centre, NIFS, Japan
• KAERI, Korea
• Institute of Applied Physics and Computational Mathematics, China, Atomic and Molecular Database

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