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HK: Fachverband Physik der Hadronen und Kerne
HK 52: Structure and Dynamics of Nuclei X
HK 52.2: Talk
Wednesday, March 13, 2024, 17:45–18:00, HBR 19: C 5a
Investigation of the Pygmy Dipole Resonance near the magic N=82 shell closure — •Florian Kluwig1, Miriam Müscher1, Deniz Savran2, Ronald Schwengner3, Tanja Schüttler1, and Andreas Zilges1 — 1University of Cologne, Institute for Nuclear Physics, Germany — 2GSI, Darmstadt, Germany — 3Helmholtz-Zentrum Dresden-Rossendorf, Germany
The Pygmy Dipole Resonance (PDR) is part of the electric dipole response in atomic nuclei. However, despite being a subject of significant interest in both theoretical and experimental domains over recent decades [1-3], several questions regarding its structure and origin remain open. Systematic studies are therefore crucial for enhancing our understanding of this excitation mode. Such studies have been performed on isotopes near the magic N=82 shell closure, e.g., 144,146Nd and 142Ce, using real-photon scattering experiments, commonly denoted as Nuclear Resonance Fluorescence (NRF). Photons are a well-suited probe for the investigation of the PDR since they only transfer small angular momenta [4]. In this contribution, the results of NRF experiments on 144Nd and comparisons with other experiments on neighbouring isotopes and isotones will be presented.
This work is partly 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] E.G. Lanza et al., Prog. Part. Nucl. Phys. 129 (2023) 104006.
[4] A. Zilges et al., Prog. Part. Nucl. Phys. 122 (2022) 103903.
Keywords: Nuclear Resonance Fluorescence; Pygmy Dipole Resonance; Neodymium