Non-isotropic angular distribution of Yb L alpha(1) and L alpha(2) lines following photoionization by linearly polarized radiation

Abstract

The angular distribution of Yb L alpha(1) and L alpha(2) lines after photoionization by a linearly polarized monochromatic photon beam from synchrotron radiation has been measured. The experiment was performed using a 5 x 5 mu m(2) x-ray beam and a high-resolution detection system designed for this experiment to resolve the L alpha(1) and L alpha(2) emission lines. The main advantage of the proposed experimental configuration is the elimination of geometrical effects, ensuring the independence of the experimental results from previously seen geometrical pitfalls. The experimental value of the degree of alignment parameter A(20) shows very good agreement with the predicted theoretical value.