Köln 2025 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 33: Structure and Dynamics of Nuclei IX

HK 33.2: Vortrag

Mittwoch, 12. März 2025, 18:00–18:15, HS 2 Physik

Pathway to nuclear structure in heavy neutron rich nuclei in the vicinity of N=126 and nuclei northwest of ¹³²Sn via multinucleon transfer reactions — •Rainer Abels and Peter Reiter for the AGATA22.04 collaboration — IKP, Universität zu Köln, Germany

Multinucleon transfer reactions (MNT) are a competitive tool to populate exotic neutron-rich nuclei. Excited reaction products have been measured in ¹³⁶Xe + ²⁰⁸Pb at 1 GeV with the high-resolution γ-ray tracking array AGATA coupled to the mass spectrometer PRISMA at LNL (INFN, Italy) positioned at the grazing angle. Energy E, nuclear charge Z, velocity β, charge state q and mass number A of the beam-like isotopes are measured in the range of Z=53-56 to select the nuclei of interest. Kinematic coincidences are exploited in order to achieve best possible identification of the hard-to-reach target-like neutron-rich lead-like isotopes. Based on relative cross-section distributions for various reaction channels, perspectives and limitations for the production of the neutron-rich isotopes with this experimental method will be presented. Preliminary results concerning excited states of the beam-like nuclei in the Xe-Ba region will be discussed.
Supported by the German BMBF (05P21PKFN9), ENSAR2-TNA.

Keywords: Nuclear structure; AGATA; PRISMA