Münster 2017 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 41: Structure and Dynamics of Nuclei VI

HK 41.5: Vortrag

Donnerstag, 30. März 2017, 15:15–15:30, F 2

Nuclear charge radii and quadrupole moments of neutron-rich tin isotopes — •Christian Gorges for the COLLAPS-IS573 collaboration — Institut für Kernphysik, TU Darmstadt, D-64289 Darmstadt, Germany

The tin isotopes have a magic proton number (Z=50) and the most stable isotopes of all elements. Therefore tin has always been a key element in the understanding of nuclear theory. Laser spectroscopy measurements have been performed previously with low resolution up to the doubly magic nucleus 132Sn [1]. To extract magnetic dipole and electric quadrupole moments, these measurements have now been repeated using high-resolution laser spectroscopy at the COLLAPS beam line at ISOLDE, CERN. Furthermore, isomers along the chain from 113m−131mSn have been investigated and the data is extended up to 134Sn allowing the investigation of the strength of the characteristic kink at N=82. In the elements above tin a clear change in the slope is observed in the mean square charge radius when crossing the magic neutron number N = 82. It is, however, weaker for tellurium (Z=52) than in xenon (Z=54). Hartree-Fock-Bogoliubov calculations have recently been performed confirming this behaviour and predicting such a kink in the nuclear charge radii also for the tin isotopes [1,2]. The nuclear charge radii as well as the isomer shifts will be presented.

[1] F. Le Blanc et al., Phys Rev C 72, 034305 (2005)

[2] N. Schunck et al., Comput. Phys. Commun. 183, 166 (2012)

[3] M. Kortelainen et al., Phys. Rev. C 85, 024304 (2012)

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