1. Parameterization of X-ray mass attenuation coefficients in the energy range of 1–150 keV
- Author
-
J. Braziewicz, E Braziewicz, and M. Pajek
- Subjects
Nuclear and High Energy Physics ,Absorption edge ,Elemental analysis ,Chemistry ,Attenuation ,Atom ,Range (statistics) ,X-ray ,Atomic physics ,Photon energy ,Instrumentation ,Energy (signal processing) ,Computational physics - Abstract
Knowledge of X-ray mass attenuation coefficients is necessary when the thick target PIXE method is applied for quantitative elemental analysis of materials. For this purpose, the X-ray mass attenuation coefficients of Veigele [Atom. Data Tables 5 (1973) 51] ave been parameterized in the photon energy range of 1–150 keV for all elements from hydrogen to plutonium ( Z = 1–94), taking into account the K-, L-, M- and N-shell absorption edge structure existing in this energy interval. This parameterization reproduces the original data of Veigele within 1%. The discrepancies existing between the Veigele data and the recent mass attenuation coefficients of Berger and Hubbell [National Bureau of Standards Internal Report NSBIR, no. 87-3597 (1987)] were compared with the experimental NBS data file [E.B. Saloman, J.H. Hubbell and J.H. Scofield, Atom. Data Nucl. Data Tables 38 (1988) 1] for the case of lead ( Z = 82). The fitted parameters were tabulated and were further used in a simple computer code generating X-ray mass attenuation coefficients for PIXE applications.
- Published
- 1993