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Isochronous Mass Measurements of Hot Exotic Nuclei

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Abstract

A novel method for mass measurements of short-lived exotic nuclides is presented. Exotic nuclides were produced and separated in flight at relativistic energies with the fragment separator (FRS) and were injected into the experimental storage ring (ESR). Operating the ESR in the isochronous mode we performed mass measurements of neutron deficient fragments of 84Kr with half-lives larger than 50 ms. However, this experimental technique is applicable in a half-life range down to a few μs. A mass resolving power of 110000 (FWHM) has been achieved. Results are presented for the masses of 68As, 70,71Se and 73Br.

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Authors and Affiliations

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

    M. Hausmann, F. Attallah, K. Beckert, P. Beller, F. Bosch, H. Eickhoff, B. Franczak, B. Franzke, H. Geissel, O. Klepper, H.-J. Kluge, C. Kozhuharov, Yu.A. Litvinov, G. Münzenberg, N. Nankov, F. Nolden, T. Ohtsubo, T. Radon, H. Schatz, C. Scheidenberger, M. Steck, Z. Sun & H. Weick

  2. II. Physikalisches Institut, Justus-Liebig-Universität, Heinrich-Buff-Ring-16, D-35392, Gießen, Germany

    J. Stadlmann, H. Geissel & H. Wollnik

  3. Sektion Physik, Ludwig-Maximilians-Universität, Am Coulombwall, D-85748, Garching, Germany

    M. Falch, Th. Kerscher & K.E.G. Löbner

  4. 198904 St. Petersburg and Nuclear Physics Institute, St. Petersburg State University, 188350, Gatchina, Russia

    Yu.A. Litvinov & Yu.N. Novikov

Authors
  1. M. Hausmann
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  2. J. Stadlmann
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  3. F. Attallah
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  4. K. Beckert
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  5. P. Beller
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  6. F. Bosch
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  7. H. Eickhoff
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  8. M. Falch
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  9. B. Franczak
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  10. B. Franzke
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  11. H. Geissel
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  12. Th. Kerscher
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  13. O. Klepper
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  14. H.-J. Kluge
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  15. C. Kozhuharov
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  16. Yu.A. Litvinov
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  17. K.E.G. Löbner
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  18. G. Münzenberg
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  19. N. Nankov
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  20. F. Nolden
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  21. Yu.N. Novikov
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  22. T. Ohtsubo
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  23. T. Radon
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  24. H. Schatz
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  25. C. Scheidenberger
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  26. M. Steck
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  27. Z. Sun
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  28. H. Weick
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  29. H. Wollnik
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Hausmann, M., Stadlmann, J., Attallah, F. et al. Isochronous Mass Measurements of Hot Exotic Nuclei. Hyperfine Interactions 132, 289–295 (2001). https://doi.org/10.1023/A:1011911720453

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