Theoretical and experimental determination of L -shell decay rates, line widths, and fluorescence yields in Ge
2015
Fluorescence yields (FYs) for the Ge $L$ shell were determined by a theoretical and two experimental groups within the framework of the International Initiative on X-Ray Fundamental Parameters Collaboration. Calculations were performed using the Dirac-Fock method, including relativistic and QED corrections. The experimental value of the ${L}_{3}\phantom{\rule{0.28em}{0ex}}\mathrm{FY}\phantom{\rule{0.28em}{0ex}}{\ensuremath{\omega}}_{{L}_{3}}$ was determined at the Physikalisch-Technische Bundesanstalt undulator beamline of the synchrotron radiation facility BESSY II in Berlin, Germany, and the $L{\ensuremath{\alpha}}_{1,2}$ and $L{\ensuremath{\beta}}_{1}$ line widths were measured at the Swiss Light Source, Paul Scherrer Institute, Switzerland, using monochromatized synchrotron radiation and a von Hamos x-ray crystal spectrometer. The measured fluorescence yields and line widths are compared to the corresponding calculated values.
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