Determination of Mass Absorption Coefficients of Al, Cr, Ni, Zn, Se, Zr, Sn, Sb, Gd, Au, Pb and Bi for the CuLα Line

Abstract

The mass absorption coefficients for X-ray of 13.3 Å (=CuLα) have been determined by the use of EPMA and a special composite target.
The composite target was prepared by means of the evaporation of Al, Cr, Ni, Zn, Se, Zr, Sn, Sb, Gd, Au, Pb or Bi on Cu base in vacuum (∼10⁻⁵ mmHg).
The mass absorption coefficients of these metals for the CuLα line were determined from the experimental results by the following equation:
(This article is not displayable. Please see full text pdf.)
\ oindentHere, I₁ and I₂ are relative intensities of CuLα line measured from the composite target with Al surface film of t₁ g/cm² and another surface film of t₂ g/cm², respectively, where t₁ and t₂ are the “equivalent thickness” to each other, and θ is a take-off angle of X-ray.