Gießen 2024 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 72: Poster
HK 72.30: Poster
Donnerstag, 14. März 2024, 17:15–18:45, HBR 14: Foyer
Towards a test of D3h symmetry in 12C — •I. Jurosevic, J. Birkhan, I. Brandherm, B. Hessbacher, J. Isaak, N. Pietralla, T. Ramaker, M. Spall, and G. Steinhilber — Institut für Kernphysik, Technische Universität Darmstadt
Due to the pronounced cluster structure of 12C it has been proposed that some of its excited states can be classified according to the D3h symmetry [1]. In particular, the electric ground state excitation strengths of different multipole orders should be related. We have contributed a precision measurement for the E2 strength of the 21+ state by electron scattering at the S-DALINAC at low momentum transfer [2]. We aim, now, at a similar measurement of the form factors of the 31− and 41+ states of 12C at low momentum transfer (0.3 fm−1 ≤ q ≤ 0.8 fm−1). The plans for our experiment will be presented.
*Project is supported by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under grant No. SFB 1245 - Project-ID 279384907.
[1] R. Bijker and F. Iachello, Prog. Part. Nucl. Phys. 110, 103735 (2020).
[2] A. D’Alessio et al., Phys. Rev. C 102, 011302(R) (2020).
Keywords: Electron Scattering; Carbon 12; Excitation Strength; Alpha Clustering; Hoyle State