SMuK 2023 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 42: Structure and Dynamics of Nuclei VIII
HK 42.3: Vortrag
Mittwoch, 22. März 2023, 16:30–16:45, SCH/A215
12C(p,2p)11B Quasi-Free-Scattering in Inverse Kinematics at R3B — •Tobias Jenegger, Philipp Klenze, Lukas Ponnath, and Roman Gernhaeuser — Technische Universität München, Germany
The advanced R3B setup at GSI allows to investigate proton-induced-quasi-free one-nucleon
knockout reactions of exotic nuclei in inverse kinematics. This technique gives direct access to the
momentum distributions of the scattered off protons in the nucleus before as well as the recoil
momentum of the remaining spectator nucleus. In addition to the correlated gamma spectrum it is a
powerful tool to unveil individual states populated in the reaction.
The CALIFA calorimeter, with its 2528 CsI scintillation crystals in its final design, is a key detector
in quasi-free-scattering experiments at R3B. It allows to detect both the two coincident protons from
the quasi-free-scattering process and emitted γ-rays from de-excitation of the remaining nucleus
with high angular resolution and precise Doppler correction.
For the heavy residues unique particle identification was performed with multi-sampling ionisation
chambers and a high resolution tracking system before and after the GLAD magnet, resulting in a
relative mass resolution of less than 0.5 percent.
We present the analysis of the S444 experiment performed in the FAIR Phase-0 campaign with
relativistic 12C beams at various energies focusing on the quasi-free-scattering process, and the
reconstruction of the associated gamma ray spectra.