Anisotropic angular distribution of Er L x-raysfollowing photoionization by linearly polarized radiation

R.A. BARREA; C. A. PéREZ; T. PLIVELIK; E.V. BONZI; HECTOR JORGE SANCHEZ

Journal of Physics B-Atomic Molecular and Optical Physics

Año: 2005 vol. 38 p. 839 - 849

0953-4075

The angular distribution of the Er L emission after photoionization by linearly polarized monochromatic synchrotron radiation has been measured. A dedicated instrumentation, designed for this kind of experiment, allowed observation of even the smallest anisotropy of the <Lá> line. The experimental anisotropy parameter and degree of alignment parameter show very good agreement with the predicted theoretical values. It has been found that the ion alignment with the incident beam direction is a function of the polarization of the incident beam. Evidence of non-dipole contributions was observed.<Lá> line. The experimental anisotropy parameter and degree of alignment parameter show very good agreement with the predicted theoretical values. It has been found that the ion alignment with the incident beam direction is a function of the polarization of the incident beam. Evidence of non-dipole contributions was observed.