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X-Ray Resonant Photoexcitation: Linewidths and Energies of Kα Transitions in Highly Charged Fe Ions

J. K. Rudolph, S. Bernitt, S. W. Epp, R. Steinbrügge, C. Beilmann, G. V. Brown, S. Eberle, A. Graf, Z. Harman, N. Hell, M. Leutenegger, A. Müller, K. Schlage, H.-C. Wille, H. Yavaş, J. Ullrich, and J. R. Crespo López-Urrutia
Phys. Rev. Lett. 111, 103002 – Published 5 September 2013

Abstract

Photoabsorption by and fluorescence of the Kα transitions in highly charged iron ions are essential mechanisms for x-ray radiation transfer in astrophysical environments. We study photoabsorption due to the main Kα transitions in highly charged iron ions from heliumlike to fluorinelike (Fe24+ to Fe17+) using monochromatic x rays around 6.6 keV at the PETRA III synchrotron photon source. Natural linewidths were determined with hitherto unattained accuracy. The observed transitions are of particular interest for the understanding of photoexcited plasmas found in x-ray binary stars and active galactic nuclei.

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  • Received 18 June 2013

DOI:https://doi.org/10.1103/PhysRevLett.111.103002

© 2013 American Physical Society

Authors & Affiliations

J. K. Rudolph1,2,*, S. Bernitt1, S. W. Epp3, R. Steinbrügge1, C. Beilmann1,4, G. V. Brown5, S. Eberle1, A. Graf5, Z. Harman1,6, N. Hell5,7, M. Leutenegger8,9, A. Müller2, K. Schlage10, H.-C. Wille10, H. Yavaş10, J. Ullrich1,†, and J. R. Crespo López-Urrutia1

  • 1Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany
  • 2Institut für Atom- und Molekülphysik, Justus-Liebig-Universität Gießen, Leihgesterner Weg 217, 35392 Gießen, Germany
  • 3Max Planck Advanced Study Group, CFEL, Notkestraße 85, 22607 Hamburg, Germany
  • 4Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 226, 69120 Heidelberg, Germany
  • 5Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, California 94550, USA
  • 6ExtreMe Matter Institute (EMMI), Planckstraße 1, 64291 Darmstadt, Germany
  • 7Dr. Karl Remeis-Observatory and ECAP, Universität Erlangen Nürnberg, Sternwartstraße 7, 96049 Bamberg, Germany
  • 8NASA/Goddard Space Flight Center, 8800 Greenbelt Road, Greenbelt, Maryland 20771, USA
  • 9Center for Space Sciences and Technology, University of Maryland, Baltimore County, Baltimore, Maryland 21250, USA
  • 10Deutsches Elektronen-Synchrotron (PETRA III), Notkestraße 85, 22607 Hamburg, Germany

  • *jan.rudolph@mpi-hd.mpg.de
  • Present address: Physikalisch Technische Bundesanstalt (PTB), Bundesallee 100, 38116 Braunschweig, Germany.

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Issue

Vol. 111, Iss. 10 — 6 September 2013

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