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Correction Factors for the NIST Free-Air Ionization Chambers Used to Realize Air Kerma from W-Anode X-ray Beam

Published

Author(s)

Stephen M. Seltzer

Abstract

This report details analyses in the development of certain correction factors for free-air ionization chambers used by the National Institute of Standards and Technology to realize air kerma for its measurement standards and calibrations of W-anode x-ray beams. The correction factors dealt with in this report are the electron-loss correction, kel, the photon-scatter correction, ksc, the fluorescence-reabsorption correction, kfl, and the bremsstrahlung-reabsorption correction, kbr.
Citation
NIST Interagency/Internal Report (NISTIR) - 7887
Report Number
7887

Keywords

air kerma, correction factors, NIST free-air chambers, measurement standards, x-ray beams

Citation

Seltzer, S. (2012), Correction Factors for the NIST Free-Air Ionization Chambers Used to Realize Air Kerma from W-Anode X-ray Beam, NIST Interagency/Internal Report (NISTIR), National Institute of Standards and Technology, Gaithersburg, MD, [online], https://doi.org/10.6028/NIST.IR.7887 (Accessed October 26, 2021)
Created October 16, 2012, Updated November 10, 2018