NIST Electron Elastic-Scattering Cross-Section Database, SRD 64

NIST Standard Reference Database 64, Version 4.0 (Web Version)
  • Description:

    The first Web version of the NIST Elastic-Scattering Cross-Section Database

  • Release year: 2016
NIST Standard Reference Database 64, Version 3.2 (PC Version)
  • Description:

    the installation program for version 3.2 was changed so that it would operate on newer versions of the windows operating system. there were no changes or additions to the data in the database although a new about box was added to the main menu. this box shows two references, a 2004 critical review [1] and a 2005 review [2], that discuss evaluations of the compiled data, methods of determination, and uncertainty.

    The database calculates parameters for random number generators that provide the scattering angles for Monte Carlo simulations of electron transport in AES, XPS, and other applications. Portable FORTRAN codes for these generators are included. These codes facilitate considerably the development of Monte Carlo programs for simulating electron transport.

  • Release year: 2010
NIST Standard Reference Database 64, Version 3.1 (PC Version)
  • Description:

    This version contained two major changes.

    • First, the differential elastic-scattering cross sections, total elastic-scattering cross sections, phase shifts, and transport cross sections were calculated from a relativistic Dirac partial-wave analysis in which the potentials were obtained from Dirac-Hartree-Fock electron densities computed self-consistently for free atoms. This potential is believed to be more reliable than the Thomas-Fermi-Dirac potential used previously [1]. Differences in elastic-scattering cross sections and transport cross sections resulting from this change of potential are described in a review article [1] and briefly in Section VI.
    • The second major change in the database is that differential elastic-scattering cross sections, total elastic-scattering cross sections, and transport cross sections are now available for electron energies up to 300 000 eV. As a result, the database should be useful for a wider range of materials-characterization applications that include electron-probe microanalysis and analytical electron microscopy.

    In addition, it is possible in Version 3.0 to create and/or print files illustrating variation of differential elastic-scattering cross sections versus scattering angle for one or more elements or for one or more energies. Some of the database screens were redesigned as a result of the increase in the upper electron-energy limit to 300 keV.

  • Release year: 2002
NIST Standard Reference Database 64, Version 3.0 (PC Version)
  • Description:This version contained two major changes. First, the differential elastic-scattering cross sections, total elastic-scattering cross sections, phase shifts, and transport cross sections were calculated from a relativistic Dirac partial-wave analysis in which the potentials were obtained from Dirac-Hartree-Fock electron densities computed self-consistently for free atoms. This potential is believed to be more reliable than the Thomas-Fermi-Dirac potential used previously [1]. Differences in elastic-scattering cross sections and transport cross sections resulting from this change of potential are described in a review article [1] and briefly in Section VI.
  • Release year: 2002
NIST Standard Reference Database 64, Version 2.0 (PC Version)
  • Description:

    In this version, the upper electron-energy limit was extended to 20 000 eV, and phase shifts and transport cross sections were also provided. The elastic-scattering cross sections, phase shifts, and transport cross sections, however, were obtained only with a relativistic model because this was believed to be more reliable than the non-relativistic model.

  • Release year: 2000
NIST Standard Reference Database 64, Version 1.0 (PC Version)
  • Description: This version provided differential and total elastic-scattering cross sections for elements with atomic numbers from 1 to 96 and for electron energies between 50 eV and 9999 eV in steps of 1 eV. These cross sections were calculated using the Thomas-Fermi-Dirac potential to describe the interaction between an electron and an atom, and using both relativistic and non-relativistic models. This version was designed for analyses of the transport of signal electrons in AES and XPS although it could, of course, be used for other applications.
  • Release year: 1996