5–7 Dec 2018
CERN
Europe/Zurich timezone

Mass measurements at the extreme of the nuclear landscape with ISOLTRAP

7 Dec 2018, 11:00
30m
503/1-001 - Council Chamber (CERN)

503/1-001 - Council Chamber

CERN

162
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Speaker

Maxime Mougeot (Max-Planck-Gesellschaft (DE))

Description

Key in the establishment of the traditional concepts of nuclear shells, binding-energy studies were also pivotal to the early realization of the demise of the traditional shell closures away from stability [1]. Extensive effort has followed to examine the classical signatures for magicity in exotic nuclei and more than three decades later, the robustness of all major shell closures has been assessed [2]. Along the way, a number of subshells (e.g N = 32 in $^{52}$Ca) have even been shown to exhibit localized magic behaviour [3].

Over the past year, the online Penning-trap mass spectrometer ISOLTRAP [4,5] has dedicated most of its experimental effort to the study of two topical regions for the study of the shell-evolution phenomenon. On the one hand, extending the study of the N = 32 sub-shell closure from the cadmium (Z =20) to the scandium (Z =21) chain was attempted. On the other hand, a mass-measurement campaign was dedicated to the study of neutron-deficient indium isotopes in the vicinity of the doubly-magic $^{100}$Sn. This campaign performed at extreme of the nuclear landscape was successful to measure $^{99-101}$In and allows the study of the Z=N=50 shell closure in close proximity with the proton drip-line. This contribution will present highlights from both measurement campaigns.

[1] C. Thibault et al., Phys. Rev. C 12, 644 (1975).
[2] O. Sorlin et al., Prog. Part. Nucl. Phys. 61, 2 602-673 (2008).
[3] F. Wienholtz et al., Nature 498, 346–349 (2013).
[4] M. Mukherjee et al., Eur. Phys. J. A 35, 1-29 (2008).

[5] R. Wolf, F. Wienholtz et al., Int. J. Mass. Spectrom. 349-350, 123-133 (2013).

Author

Maxime Mougeot (Max-Planck-Gesellschaft (DE))

Co-authors

Dinko Atanasov (KU Leuven (BE)) Pauline Ascher (CENBG) Klaus Blaum (Max-Planck-Gesellschaft (DE)) Burcu Cakirli (Max-Planck-Institut fuer Kernphysik (MPI)-Max-Planck-Gesellscha) Frank Herfurth (GSI - Helmholtzzentrum fur Schwerionenforschung GmbH (DE)) Jonas Karthein (Ruprecht Karls Universitaet Heidelberg (DE)) Ivan Kulikov (GSI) Yury Litvinov (GSI - Helmholtzzentrum fur Schwerionenforschung GmbH (DE)) David Lunney (Centre National de la Recherche Scientifique (FR)) Vladimir Manea (KU Leuven (BE)) Lutz Christian Schweikhard (Ernst Moritz Arndt Universitaet (DE)) Timo Pascal Steinsberger (Ruprecht-Karls-Universitaet Heidelberg (DE)) Andree Welker (CERN Fellow) Frank Wienholtz (CERN) Kai Zuber (Technische Universitaet Dresden)

Presentation materials