NIST Standard Reference Database 126 Last Update to Data Content: July 2004 NISTIR 5632 DOI: Tables of X-Ray Mass Attenuation Coefficients and Mass Energy-Absorption Coefficients from 1 keV to 20 MeV for Elements Z = 1 to 92 and 48 Additional Substances of Dosimetric Interest* J. Hubbell + and Radiation Physics Division, PML, NIST © 1989, 1990, 1996 copyright by the U.S. Secretary of Commerce on behalf of the United States of America. All rights reserved.

WinXCom – a program for calculating x-ray attenuation coefficients. Save to Mendeley; Export to BibTeX Export to RIS Email citation. Authors: Gerward, Leif. The attenuation coefficient depends on the incident photon energy and the nature of the. Housing gamma radiation sources as well as X-ray generating equipment. Thickness well calculated as to assure protection of the public in general as well as staff. (p/p) by employing the WinXcom programme for windows.

NIST reserves the right to charge for these data in the future. Abstract Tables and graphs of the photon mass attenuation coefficient μ/ ρ and the mass energy-absorption coefficient μ en/ ρ are presented for all of the elements Z = 1 to 92, and for 48 compounds and mixtures of radiological interest. The tables cover energies of the photon (x-ray, gamma ray, bremsstrahlung) from 1 keV to 20 MeV. The μ/ ρ values are taken from the current photon interaction database at the National Institute of Standards and Technology, and the μ en/ ρ values are based on the new calculations by Seltzer described in Radiation Research 136, 147 (1993). Velamma episode 8 pdf converter download. These tables of μ/ ρ and μ en/ ρ replace and extend the tables given by Hubbell in the International Journal of Applied Radiation and Isotopes 33, 1269 (1982). Table of Contents • • Material constants for elemental media. Material constants and composition for compounds and mixtures.

Values of the mass attenuation coefficient and the mass energy-absorption coefficient as a function of photon energy, for: [Data] elemental media. [Data] compounds and mixtures. • • • *Work supported by the of NIST. +Work carried out for NIST under contract 43NANB412756. NIST Standard Reference Database 126  Online: May 1996  Last update: July 2004.