SMuK 2023 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 69: Structure and Dynamics of Nuclei XIV

HK 69.6: Vortrag

Donnerstag, 23. März 2023, 17:00–17:15, SCH/A118

Investigation of the Nuclear Structure of ⁷⁶Ge Using Nuclear Resonance Fluorescence — •M. Heumüller, V. Werner, S. Bassauer, T. Beck, M. Berger, M. Beuschlein, I. Brandherm, K. Ide, J. Isaak, R. Kern, J. Kleemann, O. Papst, N. Pietralla, P. Ries, G. Steinhilber, M. Stoyanova, and R. Zidarova — IKP, TU Darmstadt

⁷⁶Ge is the heaviest stable of the Germanium isotopes, which have been discussed in terms of shape coexistence and triaxiality [1]. In addition, ⁷⁶Ge is the baseline isotope for experiments searching for neutrino-less double-beta decay, hence, especially its low-energy dipole response is of interest. The nuclear structure of ⁷⁶Ge was investigated previously by using the method of nuclear resonance fluorescence [2,3]. For minimizing systematic uncertainties for cross section measurements below 5 MeV, the energy region of the low lying scissors mode, a bremsstrahlung measurement with an endpoint energy of 5.5 MeV was performed. The photons were provided by the superconducting electron accelerator S-DALINAC, impinging the enriched target in the Darmstadt High Intensity Photon Setup (DHIPS) with three HPGe detectors for γ-ray detection. The data analysis and results will be presented in the talk.

[1]Y. Toh et al., Phys. Rev. C 87, 041304(R) (2013)

[2]A. Jung et al., Nucl. Phys. A 584, 103-132 (1995)

[3]R. Schwengner et al., Phys. Rev. C 105, 024303 (2022)