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Title: Electron capture and electron transport by fast ions penetrating solids: An open quantum system approach with sources and sinks

Abstract

We present a joint theoretical and experimental study of the time evolution of electronic states of highly charged hydrogenic ions formed by capture during transmission through solids as they undergo multiple collisions and radiative decay. For this transport problem we have developed an inhomogeneous nonunitary Lindblad master equation that allows for a description of open quantum systems with both sinks (electron loss) and source (capture) present. We apply this theoretical framework to study transient coherences created in electron capture by 13.6 MeV/amu Ar{sup 18+} ions transmitted through amorphous carbon foils and decoherence during subsequent interaction with the foil. In the limit of thin targets we can directly probe electron capture cross sections under single collision conditions, while for thicker targets we follow the partially coherent dynamics of the open quantum system in interaction with the solid as a function of interaction time. The calculated results are in close agreement with experimental data obtained at the LISE facility in GANIL. Photon intensities from excited argon ions were determined through high resolution x-ray spectroscopy in which individual fine structure components were resolved. Measurements were performed for a wide range of carbon foil thickness to study the time development of the excited statemore » populations.« less

Authors:
 [1];  [2];  [3];  [4];  [3];  [4];  [3];  [5];  [1];  [1];  [4]; ; ;  [6]
  1. Institute for Theoretical Physics, Vienna University of Technology, A-1040 Vienna (Austria)
  2. (Austria)
  3. Physics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6372 (United States)
  4. (United States)
  5. Department of Physics, Auburn University, Auburn, Alabama 36849 (United States)
  6. Institut des NanoSciences de Paris, CNRS UMR 75-88, Universites Paris 6 et 7, 75015 Paris (France)
Publication Date:
OSTI Identifier:
20982334
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. A; Journal Volume: 75; Journal Issue: 3; Other Information: DOI: 10.1103/PhysRevA.75.032714; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; ARGON IONS; CARBON; COLLISIONS; CROSS SECTIONS; ELECTRON CAPTURE; ELECTRON LOSS; EXCITED STATES; FINE STRUCTURE; FOILS; GANIL CYCLOTRON; INTERACTIONS; MEV RANGE 10-100; MULTICHARGED IONS; PHOTONS; RADIATIVE DECAY; RESOLUTION; SINKS; THICKNESS; X-RAY SPECTRA; X-RAY SPECTROSCOPY

Citation Formats

Seliger, Marek, Institute for Physics, Karl-Franzens-University Graz, A-8010 Graz, Reinhold, Carlos O., Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996-1200, Minami, Tatsuya, Department of Physics, Auburn University, Auburn, Alabama 36849, Schultz, David R., Pindzola, Michael S., Yoshida, Shuhei, Burgdoerfer, Joachim, Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996-1200, Lamour, Emily, Rozet, Jean-Pierre, and Vernhet, Dominique. Electron capture and electron transport by fast ions penetrating solids: An open quantum system approach with sources and sinks. United States: N. p., 2007. Web. doi:10.1103/PHYSREVA.75.032714.
Seliger, Marek, Institute for Physics, Karl-Franzens-University Graz, A-8010 Graz, Reinhold, Carlos O., Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996-1200, Minami, Tatsuya, Department of Physics, Auburn University, Auburn, Alabama 36849, Schultz, David R., Pindzola, Michael S., Yoshida, Shuhei, Burgdoerfer, Joachim, Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996-1200, Lamour, Emily, Rozet, Jean-Pierre, & Vernhet, Dominique. Electron capture and electron transport by fast ions penetrating solids: An open quantum system approach with sources and sinks. United States. doi:10.1103/PHYSREVA.75.032714.
Seliger, Marek, Institute for Physics, Karl-Franzens-University Graz, A-8010 Graz, Reinhold, Carlos O., Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996-1200, Minami, Tatsuya, Department of Physics, Auburn University, Auburn, Alabama 36849, Schultz, David R., Pindzola, Michael S., Yoshida, Shuhei, Burgdoerfer, Joachim, Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996-1200, Lamour, Emily, Rozet, Jean-Pierre, and Vernhet, Dominique. Thu . "Electron capture and electron transport by fast ions penetrating solids: An open quantum system approach with sources and sinks". United States. doi:10.1103/PHYSREVA.75.032714.
@article{osti_20982334,
title = {Electron capture and electron transport by fast ions penetrating solids: An open quantum system approach with sources and sinks},
author = {Seliger, Marek and Institute for Physics, Karl-Franzens-University Graz, A-8010 Graz and Reinhold, Carlos O. and Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996-1200 and Minami, Tatsuya and Department of Physics, Auburn University, Auburn, Alabama 36849 and Schultz, David R. and Pindzola, Michael S. and Yoshida, Shuhei and Burgdoerfer, Joachim and Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996-1200 and Lamour, Emily and Rozet, Jean-Pierre and Vernhet, Dominique},
abstractNote = {We present a joint theoretical and experimental study of the time evolution of electronic states of highly charged hydrogenic ions formed by capture during transmission through solids as they undergo multiple collisions and radiative decay. For this transport problem we have developed an inhomogeneous nonunitary Lindblad master equation that allows for a description of open quantum systems with both sinks (electron loss) and source (capture) present. We apply this theoretical framework to study transient coherences created in electron capture by 13.6 MeV/amu Ar{sup 18+} ions transmitted through amorphous carbon foils and decoherence during subsequent interaction with the foil. In the limit of thin targets we can directly probe electron capture cross sections under single collision conditions, while for thicker targets we follow the partially coherent dynamics of the open quantum system in interaction with the solid as a function of interaction time. The calculated results are in close agreement with experimental data obtained at the LISE facility in GANIL. Photon intensities from excited argon ions were determined through high resolution x-ray spectroscopy in which individual fine structure components were resolved. Measurements were performed for a wide range of carbon foil thickness to study the time development of the excited state populations.},
doi = {10.1103/PHYSREVA.75.032714},
journal = {Physical Review. A},
number = 3,
volume = 75,
place = {United States},
year = {Thu Mar 15 00:00:00 EDT 2007},
month = {Thu Mar 15 00:00:00 EDT 2007}
}