Polarization Analysis of Angular Dependent Resonantly Excited Soft X-Ray Emission Spectra of FeO, α-Fe2O3 and La2CuO4

G. Dräger; D. Heumann; S. Bocharov; L.C. Duda; J. Guo; N. Wassdahl; E.J. Nordgren

doi:doi:10.1051/jp4/1997023

Numéro		J. Phys. IV France Volume 7, Numéro C2, Avril 1997 Proceedings of the 9th International Conference on X-Ray Absorption Fine Structure


Page(s)		C2-373 - C2-374
DOI		https://doi.org/10.1051/jp4/1997023

Proceedings of the 9th International Conference on X-Ray Absorption Fine Structure

J. Phys. IV France 7 (1997) C2-373-C2-374
DOI: 10.1051/jp4/1997023

Polarization Analysis of Angular Dependent Resonantly Excited Soft X-Ray Emission Spectra of FeO, α-Fe₂O₃ and La₂CuO₄

G. Dräger¹, D. Heumann¹, S. Bocharov¹, L.C. Duda², J. Guo², N. Wassdahl³ and E.J. Nordgren²

¹ Fachbereich Physik der Martin-Luther-Universität, 06108 Halle, Germany
² Department of Physics, Uppsala University, Box 530, 75121 Uppsala, Sweden
³ Department of Physics, Uppsala University, Box 530, 75121 Uppsala Sweden

Abstract
At the BW3 beamline (HASYLAB/Hamburg) we have studied the Fe L and Cu L emission spectra of FeO, α-Fe₂0₃ and La₂CuO₄, respectively, using different orientations of the single crystal samples with respect to the polarization of the exciting radiation and to horizontal and vertical positions of the x-ray grating spectrometer. The energies of the exciting photons were chosen at characteristic structures of the absorption spectra. Depending on the excitation energy and the geometrical configuration the spectra show characteristic L_α/L₁ intensity ratio and changes in the shape and position of the ha emission bands. The L_α emission of La₂Cu0₄ could be completely analyzed with respect to the polarization of exciting and emitted radiation and is discussed on the basis of a model calculation, of Tanaka and Kotani [J. Phys. Soc. Jpn. 62, (1993) 464].