• Open Access

Mass measurements of neutron-rich isotopes near N=20 by in-trap decay with the ISOLTRAP spectrometer

P. Ascher, N. Althubiti, D. Atanasov, K. Blaum, R. B. Cakirli, S. Grévy, F. Herfurth, S. Kreim, D. Lunney, V. Manea, D. Neidherr, M. Rosenbusch, L. Schweikhard, A. Welker, F. Wienholtz, R. N. Wolf, and K. Zuber
Phys. Rev. C 100, 014304 – Published 8 July 2019

Abstract

The masses of Si34, Mg33,34, and Al34 have been measured with the ISOLTRAP Penning-trap spectrometer at ISOLDE/CERN. The results are in agreement with previous mass measurements and uncertainties have been decreased. The mass of Al34 was determined in two configurations, one following direct production by the ISOLDE facility, favoring the 4 state, expected to be the ground state, second by in-trap decay of Mg34, followed by recoil-ion trapping, favoring the production of the isomeric 1+ state. A position-sensitive detector was used to clean the ToF-ICR resonance. In addition, the mass of the refractory doubly magic Si34 nucleus was directly measured, using the in-trap decay of Mg34, following two sequential recoil-ion captures. The approach, challenges and conclusions are discussed.

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  • Received 28 February 2019
  • Revised 21 May 2019

DOI:https://doi.org/10.1103/PhysRevC.100.014304

Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.

Published by the American Physical Society

Physics Subject Headings (PhySH)

Nuclear Physics

Authors & Affiliations

P. Ascher1,*, N. Althubiti2,3, D. Atanasov4,†, K. Blaum4, R. B. Cakirli5, S. Grévy1, F. Herfurth6, S. Kreim4, D. Lunney7, V. Manea8,†, D. Neidherr6, M. Rosenbusch9, L. Schweikhard10, A. Welker11, F. Wienholtz10, R. N. Wolf4,‡, and K. Zuber11

  • 1Centre d'Études Nucléaires de Bordeaux-Gradignan, Gradignan, France
  • 2School of Physics and Astronomy, The University of Manchester, Manchester, United Kingdom
  • 3Physics Department, Faculty of Science, Jouf University, Aljouf, Saudi Arabia
  • 4Max-Planck-Institut für Kernphysik, Heidelberg, Germany
  • 5University of Istanbul, Department of Physics 34134, Istanbul, Turkey
  • 6GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, Germany
  • 7CSNSM-IN2P3-CNRS, Université de Paris Sud, Orsay, France
  • 8Experimental Physics Department, CERN, Geneva, Switzerland
  • 9RIKEN Nishina Center, Wako, Saitama 351-0198, Japan
  • 10Institut für Physik, Universität Greifswald, 17487 Greifswald, Germany
  • 11Institut für Kern- und Teilchenphysik, Technische Universität Dresden, Germany

  • *ascher@cenbg.in2p3.fr
  • Present address: Instituut voor Kern- en Stralingsfysica, Katholieke Universiteit Leuven, B-3001 Leuven, Belgium.
  • Present address: ARC Centre of Excellence for Engineered Quantum Systems, School of Physics, The University of Sydney, Australia.

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Vol. 100, Iss. 1 — July 2019

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