» NIST Physical Reference Data    Research database from NIST, US.    http://physics.nist.gov/PhysRefData/contents.html

» WIS List of Databases for Atomic and Plasma Physics    From: Plasma Laboratory of Weizmann Institute of Science, Israel    http://plasma-gate.weizmann.ac.il/DBfAPP.html

» Atomic Data for Astrophysics    Photoionization; Recombination; Collisional ionization and autoionization; Charge transfer; Auger processes Energy levels, wavelengths, transition probabilities; Collision strengths, excitation rates; Stark broadening; Opacities; Fortran subroutines    http://www.pa.uky.edu/~verner/atom.html

» Atomic Data for Fusion    The Controlled Fusion Atomic Data Center.    http://www-cfadc.phy.ornl.gov/

» Atomic Line List v2.01    A compilation of approximately 890,000 allowed, intercombination and forbidden atomic transitions with wavelengths in the range from 0.5 Å to 1000 µm.    http://www.pa.uky.edu/~peter/atomic/

» Databases for Atomic and Plasma Physics    Collection of several links to databases for atomic and plasma physics: opacities, atomic spectra, electron-impact ionization crosssections, electron binding energies, x-ray emission lines, photoionization, recombination, collisional ionization and autoio    http://www.astro.spbu.ru/db_web/AtDatCent/DBfAPP.html

» FUSE Atomic Data Page    Provides atomic data (statistical weights, transition probablilities, and oscillator strengths) for elements Hydrogen (including Deuterium) up to Ge (atomic number 32), plus Tables of UV lines sorted by wavelength.    http://violet.pha.jhu.edu/support/atomdata/atom.html

» IAEA Nuclear Data Services    Provides access to databases, documents, programs and files. Maintained by the IAEA's Nuclear Data Centre.    http://www-nds.iaea.org/

» NIST Atomic Spectroscopic Database    Critical compilation of atomic energy levels, wavelengths and transition probabilities from NIST, US.    http://physics.nist.gov/cgi-bin/AtData/main_asd

» National Nuclear Data Center    The National Nuclear Data Center (NNDC) is funded by the U.S. Department of Energy to provide information services in the fields of low and medium energy nuclear physics to users in the United States and Canada. In particular, the Center can provide inf    http://www.nndc.bnl.gov/

» Nuclear Data    Los Alamos National Lab USA. Neutron, photon, electron, dosimetry, and thermal neutron S(alpha, beta) data libraries are provided for radiation transport codes.    http://laws.lanl.gov/XCI/PROJECTS/DATA/nuclear/

» The IAEA Nuclear Data Guide    Catalog of nuclear data information available - online or off-line - from the IAEA Nuclear Data Section.    http://www-nds.iaea.org/indg_intro.html

» X-Ray & Gamma-Ray    NIST Physical Reference Data, US.    http://physics.nist.gov/PhysRefData/contents-xray.html

» X-Ray Absorption Coefficients    Program to calculate X-ray absorption coefficients, also edge energies, fluorescence yield; MUCAL on the Web Mucal on the web.    http://www.csrri.iit.edu/mucal.html

» X-Ray Interactions with Matter    Atomic x-ray scattering factor files, x-ray properties of the elements and a calculator for synchrotron bent magnet radiation, published by the Center for X-Ray Optics at LBNL.    http://www-cxro.lbl.gov/optical_constants/

» X-Ray WWW Server    This is the repository of the COREX bibliography and database, the Henke atomic scattering factors, and other information of interest to x-ray spectroscopists. It provides links to additional locations for information about x-ray research.    http://xray.uu.se/