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Probing a cooled beam of decelerated highly-charged heavy ions extracted out of the ESR by a channeling experiment

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Abstract

A cooled beam of decelerated highly-charged heavy ions is slowly extracted out of the cooler and storage ring ESR, by combining the deceleration technique and the charge exchange extraction mode. The quality of the external ion beam is tested by a channeling experiment. Bare Au79+ ions are injected into the ESR at an energy of 360 MeV/u, decelerated to 53 MeV/u, and finally cooled strongly in the electron cooler. By breeding of neighboring charge state ions via radiative recombination in the electron cooler H-like ions are produced. The H-like ion fraction is extracted out of the storage ring. This extracted Au78+ ion beam is probed by a channeling experiment measuring the extinction rate of the projectile Kα X-ray yield around the [110] axis of a thin silicon crystal.

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Authors and Affiliations

  1. Gesellschaft für Schwerionenforschung, D-64291, Darmstadt, Germany

    H.-Th. Prinz, K. Beckert, H. Eickhoff, B. Franzke, H. Geissel, P.H. Mokler, F. Nickel, F. Nolden, H. Reich, C. Scheidenberger, M. Steck & Th. Stöhlker

  2. Institut de Physique Nucléaire de Lyon, IN2P3/CNRS, Université, Claude Bernard Lyon-1, F-69622, Villeurbanne Cedex, France

    D. Dauvergne, M. Chevallier, R. Kirsch, J.C. Poizat, J. Remillieux & F. Sanuy

  3. Centre d'Etudes Nucléaires de Bordeaux-Gradignan/IN2P3, le Haut Vigneau, F-33175, Gradignan Cedex, France

    S. Andriamonje

  4. Groupe de Physique des Solides, CNRS/URA017, Université Paris VII et Paris VI, F-75251, Paris Cedex 05, France

    C. Cohen, A. L'Hoir & D. Schmaus

  5. Centre Interdisciplinaire de Recherche avec les Ions Lourds, UMR11 CNRS/CEA, rue Claude Bloch, F-14040, Caen Cedex, France

    J. Dural & M. Toulemonde

  6. Institut für Kernphysik der Universität Frankfurt, D-60486, Frankfurt, Germany

    R. Moshammer

Authors
  1. H.-Th. Prinz
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  2. D. Dauvergne
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  3. S. Andriamonje
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  4. K. Beckert
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  5. M. Chevallier
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  6. C. Cohen
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  7. J. Dural
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  8. H. Eickhoff
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  9. B. Franzke
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  10. H. Geissel
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  11. R. Kirsch
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  12. A. L'Hoir
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  13. P.H. Mokler
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  14. R. Moshammer
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  15. F. Nickel
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  16. F. Nolden
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  17. J.C. Poizat
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  18. H. Reich
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  19. J. Remillieux
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  20. F. Sanuy
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  21. C. Scheidenberger
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  22. D. Schmaus
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  23. M. Steck
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  24. Th. Stöhlker
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  25. M. Toulemonde
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Prinz, HT., Dauvergne, D., Andriamonje, S. et al. Probing a cooled beam of decelerated highly-charged heavy ions extracted out of the ESR by a channeling experiment. Hyperfine Interactions 108, 325–332 (1997). https://doi.org/10.1023/A:1012631317353

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  • DOI: https://doi.org/10.1023/A:1012631317353

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