Theoretical and experimental determination of L-shell decay rates, line widths, and fluorescence yields in Ge

M. Guerra, J. M. Sampaio, T. I. Madeira, F. Parente, P. Indelicato, J. P. Marques, J. P. Santos, J. Hoszowska, J.-Cl. Dousse, L. Loperetti, F. Zeeshan, M. Müller, R. Unterumsberger, and B. Beckhoff
Phys. Rev. A 92, 022507 – Published 19 August 2015

Abstract

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 L3FYωL3 was determined at the Physikalisch-Technische Bundesanstalt undulator beamline of the synchrotron radiation facility BESSY II in Berlin, Germany, and the Lα1,2 and Lβ1 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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  • Received 14 May 2015

DOI:https://doi.org/10.1103/PhysRevA.92.022507

©2015 American Physical Society

Authors & Affiliations

M. Guerra1,*, J. M. Sampaio2, T. I. Madeira2, F. Parente1, P. Indelicato3, J. P. Marques2, J. P. Santos1,†, J. Hoszowska4, J.-Cl. Dousse4, L. Loperetti4, F. Zeeshan4, M. Müller5, R. Unterumsberger5, and B. Beckhoff5

  • 1Laboratório de Instrumentação, Engenharia Biomédica e Física da Radiação (LIBPhys-UNL), Departamento de Física, Faculdade de Ciências e Tecnologia, FCT, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal
  • 2BioISI—Biosystems & Integrative Sciences Institute, Faculdade de Ciências da Universidade de Lisboa, Campo Grande C8, 1749-016 Lisboa, Portugal
  • 3Laboratoire Kastler Brossel, École Normale Supérieure, CNRS, Sorbonne Universités, UPMC Université Paris 06, Case 74, 4 place Jussieu, 75005 Paris, France
  • 4Physics Department, University of Fribourg, Chemin du Musée 3, CH-1700 Fribourg, Switzerland
  • 5Physikalisch-Technische Bundesanstalt (PTB), Abbestraße 2-12, 10587 Berlin, Germany

  • *mguerra@fct.unl.pt
  • jps@fct.unl.pt

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Vol. 92, Iss. 2 — August 2015

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