Mainz 2022 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 29: Structure and Dynamics of Nuclei V
HK 29.6: Vortrag
Dienstag, 29. März 2022, 17:15–17:30, HK-H6
Electron scattering off 10B under 180∘ — •Maximilian Spall, Maxim Singer, Jonny Birkhan, Isabelle Brandherm, Martha Liliana Cortés, Florian Gaffron, Katharina E. Ide, Johann Isaak, Igor Jurosevic, Peter von Neumann-Cosel, Florian Niederschuh, Norbert Pietralla, Gerhart Steinhilber, and Tim Stetz — Institut für Kernphysik, Technische Universität Darmstadt
Electron scattering experiments under 180∘ are an excellent tool to study transversal form factors of magnetic excitations due to the suppression of longitudinal excitations by several order of magnitudes with respect to the transversal excitations and the associated radiative tail background from elastic scattering at this angle.
A measurement was performed with the 180∘ system at the S-DALINAC [1], in order to investigate the M3 transition of the 3+ ground state to the excited 0+ state at 1.74 MeV in 10B which is the analogue to the second-forbidden beta-decay of 10Be. The measurement will extend existing data towards lower momentum transfer allowing to improve the precision of the determined transition strength. The combined information from electron scattering and beta-decay will serve as a precision test of the unified description of electroweak observables in ab-initio models. First results of the new 10B(e,e’) data will be presented and a novel approach for the scattering angle calibration will be discussed.
*Supported by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) - Project-ID 279384907 - SFB 1245.
[1] C. Lüttge et al., Nucl. Instrum. Meth. A 366, 325*331 (1995).