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Bonn 2020 – wissenschaftliches Programm

Die DPG-Frühjahrstagung in Bonn musste abgesagt werden! Lesen Sie mehr ...

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HK: Fachverband Physik der Hadronen und Kerne

HK 59: Structure and Dynamics of Nuclei X

HK 59.1: Gruppenbericht

Freitag, 3. April 2020, 11:00–11:30, J-HS E

The (18O, 16O) two-neutron transfer reaction as a gateway to study the low-spin structure of neutron-rich nuclei close to stability. — •Vasil Karayonchev, Jan Jolie, Arwin Esmaeilzadeh, Andrey Blazhev, Christoph Fransen, and Claus Müller-Gatermann — Institut für Kernphysik, Zülpicher Straße 77 50937 Köln, Deutschland

Successful feasibility studies of the (18O, 16O) two-neutron transfer reaction were performed with various targets, ranging from 50Ti to 204Pb, at the FN Tandem accelerator facility of the University of Cologne, opening new experimental possibilities to study neutron-rich nuclei close to stability. The reaction was used to obtain lifetimes of low-spin states in 90Sr and 98Zr using the Doppler shift attenuation method and the recoil distance Doppler shift technique, respectfully. The newly obtained lifetimes in 90Sr corroborate the effects of the sub-shell closure at Z=38 and also indicate the possible existence of a state of a mixed-symmetry character. The measured lifetimes in 98Zr suggest the coexistence of several shapes of different deformations which are weakly mixed.

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