- Example of how to reference this online database:
- Berger, M.J., Hubbell, J.H., Seltzer, S.M., Chang, J., Coursey, J.S., Sukumar, R., Zucker, D.S., and Olsen, K. (2010), XCOM: Photon Cross Section Database (version 1.5). [Online] Available: http://physics.nist.gov/xcom [Monday, 24-Nov-2014 20:38:04 EST]. National Institute of Standards and Technology, Gaithersburg, MD.
Originally published as Berger, M.J. and Hubbell, J.H., "XCOM: Photon Cross Sections on a Personal Computer," NBSIR 87-3597, National Bureau of Standards (former name of NIST), Gaithersburg, MD (1987); and as Berger, M.J. and Hubbell, J.H., "NIST X-ray and Gamma-ray Attenuation Coefficients and Cross Sections Database," NIST Standard Reference Database 8, Version 2.0, National Institute of Standards and Technology, Gaithersburg, MD (1990).
- Citation Form:
- Author/editor (Year), Title (edition). [Type of medium] Available: URL [Access date].
|The number of significant figures reported was increased from three to four; the 4th significant figure is not intended to indicated accuracy but to aid interpolation. The web version is now based on the downloadable version (3.1) of XCOM. Other minor changes were made.|
|Inconsistencies in tabular data were corrected.|
|Improvements were made to the graphing procedure.|
|XCOM version 3.1 FORTRAN-77 source code and executables made available for downloading.|
|Additional energies limited to 75 to ensure accurate data.|
|Users were advised to use no more than 70 additional energies.|
|Correction made to properly deal with very small components of mixtures.|
|New user interface, extended graphing capabilities, and text modifications to reflect these changes.|
|"XCOM: Photon Cross Sections on a Personal Computer,"
M.J. Berger and J.H. Hubbell, National Bureau of Standards (former name of NIST), Gaithersburg, MD.