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Gießen 2024 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 72: Poster

HK 72.5: Poster

Thursday, March 14, 2024, 17:15–18:45, HBR 14: Foyer

Investigation of the low-lying dipole strength of 62Ni via real photon scattering — •Tanja Schüttler1, Florian Kluwig1, Miriam Müscher1, Ronald Schwengner2, and Andreas Zilges11University of Cologne, Institute for Nuclear Physics, Germany — 2Helmholtz-Zentrum Dresden-Rossendorf, Germany

Since photons transfer only small angular momenta, (γ,γ′) experiments are an established method to investigate the properties of the low-lying dipole strength of atomic nuclei [1]. To improve the understanding of the underlying dipole excitation modes, systematic studies of isotonic and isotopic chains are crucial. The nickel (Z = 28) isotopic chain is well suited for this purpose as it consists of four stable even-even isotopes covering a large range of N/Z ratios. Since 58,60,64Ni have already been measured in (γ,γ′) experiments, the dipole response of 62Ni is one missing link to complete the systematics [2-5]. Thus, a (γ,γ′) experiment using energetically-continuous bremsstrahlung
with a maximal photon energy of Emax = 8.7 MeV was performed at the γELBE facility at the Helmholtz-Zentrum Dresden-Rossendorf (HZDR) [6]. First results of this experiment will be presented.
This work is supported by the BMBF (05P21PKEN9).

[1] A. Zilges et al., Prog. Part. Nucl. Phys. 122 (2022) 103903.

[2] F. Bauwens et al., Phys. Rev. C 62 (2000) 024302.

[3] M. Scheck et al., Phys. Rev. C 88 (2013) 044304.

[4] M. Scheck et al., Phys. Rev. C 87 (2013) 051304(R).

[5] M. Müscher, submitted to Phys. Rev. C.

[6] R. Schwengner et al., Nucl. Instr. and Meth. A 555 (2005) 211.

Keywords: Nuclear Resonance Fluorescence; Nickel; Low-Lying Dipole Strength

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