Version History

Example of how to reference this online database:

Chantler, C.T., Olsen, K., Dragoset, R.A., Chang, J., Kishore, A.R., Kotochigova, S.A., and Zucker, D.S. (2005), X-Ray Form Factor, Attenuation and Scattering Tables (version 2.1). [Online] Available: http://physics.nist.gov/ffast [2025, January 18]. National Institute of Standards and Technology, Gaithersburg, MD.
Originally published as Chantler, C.T., J. Phys. Chem. Ref. Data 29(4), 597-1048 (2000); and Chantler, C.T., J. Phys. Chem. Ref. Data 24, 71-643 (1995).

Citation Form:

Author/editor (Year), Title (edition). [Type of medium] Available: URL [Access date].

Version 2.1 January 2005	Improvements were made to the graphing procedure.
Version 2.0 May 2003	Improvements were made to the values for the medium-Z soft X-ray edges addressing convergence issues of earlier work. Additional features that were added include data output: for compounds, for linear attenuation coefficients, and for user-defined densities. An additional data output format was added to address the Section 508 accessibility requirements.
Journal Publication 2000	C.T. Chantler, J. Phys. Chem. Ref. Data 29(4), 597-1048 (2000). "Detailed Tabulation of Atomic Form Factors, Photoelectric Absorption and Scattering Cross Section, and Mass Attenuation Coefficients in the Vicinity of Absorption Edges in the Soft X-Ray (Z = 30-36, Z = 60-89, E = 0.1 keV-10 keV), Addressing Convergence Issues of Earlier Work."
Version 1.01 July 1999	Textual content was reformatted and images were added.
Version 1.0 March 1997	Web database online.
NIST SRD 66 July 1995	NIST Standard Reference Database 66, NIST Form Factor, Attenuation and Scattering Tables, (Version 1.0), only the web version is available as of March 19, 1999; previously distributed by the NIST Standard Reference Data Program.
Journal Publication 1995	C.T. Chantler, J. Phys. Chem. Ref. Data 24, 71 (1995). "Theoretical Form Factor, Attenuation and Scattering Tabulation for Z=1-92 from E=1-10 eV to E=0.4-1.0 MeV."