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Selective laser ionization of N≥82 indium isotopes: The new r-process nuclide 135In

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Abstract:

Production yields and β-decay half-lives (T 1/2) of very neutron-rich indium isotopes were determined at CERN/ISOLDE using isobaric selectivity of a resonance-ionization laser ion-source. Beta-delayed neutron (βdn) multiscaling measurements have yielded improved T 1/2 for 206(6) ms 132In, 165(3) ms 133In and 141(5) ms 134In. With 92(10) ms 135In, a new r-process nuclide has been identified which acts as an important “waiting point” in the In isotopic chain for neutron densities in the range n n≃ 1024-1026 n/cm3, where the r-matter flow has already passed the A≃ 130 abundance peak region.

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Authors and Affiliations

  1. Institut für Kernchemie, Universität Mainz, D-55128 Mainz, Germany, , , , , , DE

    I. Dillmann, M. Hannawald, B. Pfeiffer & K.-L. Kratz

  2. CERN, CH-1211 Geneva 23, Switzerland, , , , , , CH

    U. Köster, V.N. Fedoseyev & L. Weissman

  3. Department of Chemistry, University of Maryland, College Park, MD 20742, USA, , , , , , US

    A. Wöhr, J. Shergur & W.B. Walters

  4. Petersburg Nuclear Physics Institute, RUS-188350, Gatchina, Russia, , , , , , RU

    D. Fedorov

Authors
  1. I. Dillmann
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  2. M. Hannawald
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  3. U. Köster
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  4. V.N. Fedoseyev
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  5. A. Wöhr
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  6. B. Pfeiffer
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  7. D. Fedorov
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  8. J. Shergur
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  9. L. Weissman
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  10. W.B. Walters
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  11. K.-L. Kratz
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Received: 17 January 2002 / Accepted: 30 January 2002

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Dillmann, I., Hannawald, M., Köster, U. et al. Selective laser ionization of N≥82 indium isotopes: The new r-process nuclide 135In. Eur Phys J A 13, 281–284 (2002). https://doi.org/10.1007/s10050-002-8756-7

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  • DOI: https://doi.org/10.1007/s10050-002-8756-7

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