title: The polarization of X-rays and magnetic photoionization cross-sections for L3 sub-shell.
abstract: The alignment of atoms with inner-shell vacancies resulting from ionization by photons was investigated by measuring the anisotropic emission of L shell X-ray lines. The X-ray line intensities were measured using an Si(Li) detector and radioisotope photon source in various emission angles. It was observed from measured intensities that Lalpha and Ll X-ray intensities for the L(3) sub-state depended on the emission angle, meaning that Lalpha and Ll X-rays had an anisotropic spatial distribution. Thus, the Lalpha to Ll intensity ratios for a set of elements were determined and alignment parameters for each element were obtained using these ratios. Also, the empirical values of the L(3) magnetic sub-state photoionization cross-sections for m(j)=3/2 and 1/2 were evaluated using the determined alignment parameters, sub-state photoionization cross-sections and the Coster-Kronig transition probabilities.
authors.affiliation: Atatürk University, Faculty of Sciences, Department of Physics, 25240 Erzurum, Turkey. ihan@atauni.edu.tr
authors.forename: I
authors.initials: I
authors.lastname: Han
authors.forename: M
authors.initials: M
authors.lastname: Sahin
authors.forename: L
authors.initials: L
authors.lastname: Demir