Mainz 2022 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 40: Structure and Dynamics of Nuclei VI
HK 40.4: Vortrag
Mittwoch, 30. März 2022, 15:00–15:15, HK-H6
Dipole response in 144Nd — •Florian Kluwig1, Miriam Müscher1, Ronald Schwengner2, Mark Spieker3, Werner Tornow4, and Andreas Zilges1 — 1University of Cologne, Institute for Nuclear Physics — 2Helmholtz-Zentrum Dresden-Rossendorf — 3Department of Physics, Florida State University — 4Department of Physics, Duke University and TUNL
For several years, the so-called Pygmy Dipole Resonance (PDR) has been a research topic of great interest [1,2]. It occurs as a concentration of electric dipole strength around and below the neutron separation energy. Systematic studies are essential to improve the knowledge of this excitation mode. For this purpose, the Nd isotopic chain is well-suited due to its wide range of stable, even-even isotopes. Therefore, two complementary (γ,γ’) experiments on the rare-earth nucleus 144Nd have been performed at the γELBE facility at the Helmholtz-Zentrum Dresden-Rossendorf [3] using a continuous bremsstrahlung beam and with quasi-monoenergetic γ rays at HIγS [4]. The results of these experiments will be presented in this contribution.
This work is supported by the BMBF (05P21PKEN9).
[1] D. Savran et al., Prog. Part. Nucl. Phys. 70 (2013) 210
[2] A. Bracco et al., Prog. Part. Nucl. Phys. 106 (2019) 360
[3] R. Schwengner et al., Nucl. Instr. and Meth. A 555 (2005) 211
[4] H.R. Weller et al., Prog. Part. Nucl. Phys. 62 (2009) 257