Measurements of cross sections and resonance structures following electron-impact excitation/ionization of Na-like Kr and Xe

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We report high-resolution measurements of electron impact excitation and ionization cross sections for the Na-like ions Kr{sup 25+} and Xe{sup 43+}. Ions with ionization states centered on the Na-like configurations were produced in an electron beam ion trap (EBIT) using electrons with energies below the L shell ionization thresholds. The Na-like ions were exposed to an electron beam with an energy between 3 and 7 keV. The Na- and Ne-like ions were then extracted and their intensities measured as a function of the electron beam energy. Theoretical ionization cross sections were calculated using relativistic distorted wave methods. Complex resonance structures ... continued below

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15 p.

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Schneider, D.; Dewitt, D.; Knapp, D.A.; Reed, K.J. & Chen, M.H. September 28, 1994.

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We report high-resolution measurements of electron impact excitation and ionization cross sections for the Na-like ions Kr{sup 25+} and Xe{sup 43+}. Ions with ionization states centered on the Na-like configurations were produced in an electron beam ion trap (EBIT) using electrons with energies below the L shell ionization thresholds. The Na-like ions were exposed to an electron beam with an energy between 3 and 7 keV. The Na- and Ne-like ions were then extracted and their intensities measured as a function of the electron beam energy. Theoretical ionization cross sections were calculated using relativistic distorted wave methods. Complex resonance structures that appear in the computed cross sections are observed in the experimental results. These results are the first experimental observation of resonant-excitation-double-autoionization (REDA) in highly charged high-Z ions.

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15 p.

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OSTI as DE95011731

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  • 13. international conference on the application of accelerators in research and industry, Denton, TX (United States), 7-10 Nov 1994

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  • Other: DE95011731
  • Report No.: UCRL-JC--112929
  • Report No.: CONF-941129--25
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 69419
  • Archival Resource Key: ark:/67531/metadc711914

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  • September 28, 1994

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  • Sept. 12, 2015, 6:31 a.m.

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  • Feb. 17, 2016, 2:18 p.m.

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Schneider, D.; Dewitt, D.; Knapp, D.A.; Reed, K.J. & Chen, M.H. Measurements of cross sections and resonance structures following electron-impact excitation/ionization of Na-like Kr and Xe, article, September 28, 1994; California. (digital.library.unt.edu/ark:/67531/metadc711914/: accessed November 19, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.