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.

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).

WinXCom program at the photon energies of 1 keV to 100 GeV. Jensen KB, Levring H. WinXCom—a program for calculating X-ray attenuation coefficients. WinXCom-a program for calculating X-ray attenuation coefficients (English) Gerward, L. / Guilbert, N. WinXCom-a program for calculating X-ray attenuation coefficients Author / Creator: Gerward, L. / Guilbert, N.

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.

Encoding pdf417 drivers license format ny state. 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.

Article citations Gerward, L., Guilbert, N., Jensen, K.B. And Levring, H. (2004) WinXCom—A Program for Calculating X-Ray Attenuation Coefficients.

Radiation Physics and Chemistry, 71, 653-654. Has been cited by the following article: • TITLE: AUTHORS:, KEYWORDS:,,,,,,, JOURNAL NAME:,, February 26, 2016 ABSTRACT: In this work, the Styrene-butadiene rubber (SBR)/lead oxide and the Styrene-butadiene rubber (SBR)/lead nitrate composites were prepared as gamma-radiation shielding materials. The investigated materials were prepared with three different weight percentage of lead oxide and lead nitrate (30, 50 and 70 wt%).

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The mass attenuation coefficients (μm) for all composite samples were measured experimentally at 511 and 661.6 keV photon energies. The measurements were made by performing transmission experiments with a 3' × 3' NaI (Tl) scintillation detector, which had an energy resolution of 7% at 0.662 MeV for the gamma-rays from the decay of 137Cs. The effective atomic numbers (Zeff) and the effective electron densities (Neff) were determined experimentally. Also they were determined theoretically using the obtained μm values for the studied composites samples by WinXCom program.

The obtained results show that the experimental values of the composites are found to be in a good agreement with the theoretical values. It is recognized that the mass attenuation coefficient (μm), effective atomic numbers (Zeff) and the effective electron densities (Neff) are increased in the composite samples which contain lead oxides than which contain lead nitrates. Finally, the Styrene-butadiene rubber (SBR)/lead oxide is better than Styrene-butadiene rubber (SBR)/lead nitrate polymer as gamma radiation shielding.