• Binding Energies and XPS/AES spectra
• Electronic and surface structural data
• X-ray transmission, absorbtion and emission data
• Particle/Surface interactions, including scattering data and SIMS
• Elemental and materials properties, inc. physical constants and safety info.
• Literature databases and patent searches

Binding Energies and Spectra

• The UK ESCA Users Group Database of Auger parameters 
  This database contains the energies of the principal photoemission and Auger lines and their corresponding Auger parameters for most of the elements. Most entries include values for the element in many different chemical states. Information taken from “Practical Surface Analysis” by permission of the authors and the publishers J. Wiley and Sons.
• Empirically Derived Atomic Sensitivity Factors for XPS 
  This database contains the empirically derived atomic sensitivity factors relative to F 1s for most of the elements. Values are given for the primary and some secondary peaks. Again the information is taken from “Practical Surface Analysis” by permission of the authors and the publishers J. Wiley and Sons.
• LaSurface AES/XPS database of energies and spectra.
  Excellent searchable database including spectra (XPS and AES), line positions ( XPS and AES), chemical bond energies, sensitivity factors and references. Allows you to add your own data. Available in both English and French verions.
• LaSurface Photoelectron Inelastic Mean Free Path Calculator
  Very nice java applet (IMFP Grapher) that calculates and plots electron mean free paths for any material and energy range.
• Electron Binding Energies
  Table of electron binding energies taken from the “X-ray Data Booklet” produced by Lawrence Berkeley National Laboratory.
• XPS Binding Energies (PDF format)
  Large table of 1,300 XPS and Auger peak positions for all the elements. Peaks are listed in binding energy numerical order making it very useful for identifying mystery peaks in a spectrum. Data provided courtesy of XPS International.
• Fundamental XPS Data of the Elements
  Table of XPS and Auger peak positions listed by element. Includes peak positions and FWHM. Data provided courtesy of XPS International.
• Electron Binding Energies
  Electron binding energies in eV for the elements in their natural forms.
• Auger Kinetic Energies (PDF format)
  Table of principal Auger kinetic energies arranged by element. Data provided courtesy of XPS International.
• Principal Auger Kinetic Energies
  Graph of Auger kinetic energies taken from the “X-ray Data Booklet” produced by Lawrence Berkeley National Laboratory.
• Database of XPS and AES Spectra
  XPS and AES spectra of a wide variety of elements and compounds. Provided by the Surface Analysis Society of Japan. Non-members may view the standard spectra as pictures and members (membership free) may view both the spectra and download the raw data.
• Subshell Photoionisation Cross-Sections
  Photoemisison cross-sections for a range of elements, Taken from the “X-ray Data Booklet” produced by Lawrence Berkeley National Laboratory.

Electronic and Surface Structural Data

• Electronic Structures Database
  Calculates band structure, total energy, density of states, equilibrium lattice constants, elastic constants, electron-phonon coupling constants and critera for the occurence of magnetism for most elements and a vairiety of hydrides carbides nitrides and oxides.
• The LEED I(V) Data Repository
  A Large repository of LEED I(V) data and plots for a wide variety of elements and compounds; includes original references. Provided by The Stony Brook LEED group.
• Surface Structure Explorer
  A very nice on-line application based on BALSAC (Build and Analyze Lattices, Surfaces, And Clusters) which generates full colour pictures of any given lattice structure from its lattice parameters.

X-ray transmission, absorbtion and emission data

• X-Ray Properties of the Elements
  Nice on-line application that generates the photoabsorpbtion cross section, photo attenuation length, scattering factors, critical angle etc. for any given element and photon energy.
• X-Ray Attenuation Length 
  Nice online application that generates the X-ray attenuation length for a wide range of compounds over any photon range between 30 and 30,000eV
• X-Ray Emission Energies (pdf)
  Table of X-ray emission energies taken from the “X-ray Data Booklet” produced by Lawrence Berkeley National Laboratory.
• X-Ray Emission Lines 
  K-level and L-level emission line energies in KeV.
• Fluorescence Yields for K and L orbitals
  Figure taken from the “X-ray Data Booklet” produced by Lawrence Berkeley National Laboratory.
• Empirically Derived Atomic Sensitivity Factors for XPS 
  This database contains the empirically derived atomic sensitivity factors relative to F 1s for most of the elements. Values are given for the primary and some secondary peaks. Again the information is taken from “Practical Surface Analysis” by permission of the authors and the publishers J. Wiley and Sons.
• X-ray Filter Transmission
  Nice online application to generate the X-ray filter transmission for a wide range of solid compounds over any photon range between 30 and 30,000eV.
• Searchable Bibliography of core edge (inner shell) Excitation spectra of gas phase atoms and molecules
• Synchrotron Bending Magnet Spectra 
  Nice on-line application that generates bending magnet spectral curves for any given set of parameters.

Particle Surface Interactions

• Recent SIMS Literature Database
  Search the database and add your own papers.
• Differential Electron Scattering Cross Sections
  For Au, Ag, Cu and Al. Provided by the Surface Analysis Society of Japan.
• Atomic Scattering Factors
  Taken from the “X-ray Data Booklet” produced by Lawrence Berkeley National Laboratory.
• Atomic Scattering Factors of the Elements.
  See also
• Henke Atomic Scattering Factors for the elements.

Elemental and Materials Properties

• Web Elements 
  An excellent database of the general, physical, chemical, electronic, etc, etc properties of the first 112 elements.
• The Virtual material Science Center
  A database of databases. Source for all information on properties of materials of all types
• MatWeb
  Mechanical, thermal and electrical properties of thousands of different engineering materials, polymers, alloys, ceramics, steels etc. and links to suppliers.
• All the Physical Constants
  The National Institute of Standards & Technology recommended values of all the physical constants, including confidence levels, etc
• Chemical Safety Data Sheets
  Large database of hazard data sheets for a wide variety of chemicals

Literature databases and patent searches

• Recent SIMS Literature Database
  Search the database and add your own papers
• UK Patent Office
  UK patents can now be searched online
• US Patent Office
  Every patent issued in the US in the last 20 years is now available on-line
• European Patent Office
• Canadian Patent Office
  Search Canadain patents
• IBM Patent Sever 
  26 years of U.S. Patent & Trademark Office (USPTO) patent descriptions as well as the last ten years of images