Heidelberg 2015 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 16: Structure and Dynamics of Nuclei 3

HK 16.7: Vortrag

Montag, 23. März 2015, 18:30–18:45, T/HS2

High resolution electron scattering on ⁹⁶Zr — •Christoph Kremer, Sergej Bassauer, Andreas Krugmann, Anna Maria Krumbholz, Norbert Pietralla, Maxim Singer und Peter von Neumann-Cosel — Institut für Kernphysik TU Darmstadt

The low-energy structure of the nucleus ⁹⁶Zr is interesting for numerous reasons - especially the strong octupole correlation leading to an excitation of the prominent 3₁⁻ state with the largest known ground-state transition strength (B(E3, 3₁⁺→ 0₁⁺) = 57(4) W.u.) of all nuclei. Even though this nucleus is a good testing ground for nuclear structure theories [1] some low-energy observables are known with insufficient precision. Especially the transitions strenghts of low-lying 2⁺ states, which are important for the identification of mixed-symmetry states, have large uncertainties. Electron scattering at low impulse transfer has been shown to be capable of obtaining these B(E2) values with high precision [2]. A ⁹⁶Zr(e,e’) experiment has recently been performed at the superconducting electron linear accelerator S-DALINAC at Darmstadt using the high-resolution LINTOTT spectrometer. The experiment and preliminary results will be presented.

K. Sieja et al., Phys. Rev. C 79, 064310 (2009)
A. Scheikh Obeid et al., Phys. Rev. C 87, 014337 (2013), Phys. Rev. C 89, 037301 (2014)

This work is supported by the DFG under contract SFB 634.