SMuK 2023 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

HK: Fachverband Physik der Hadronen und Kerne

HK 50: Structure and Dynamics of Nuclei X

HK 50.2: Vortrag

Mittwoch, 22. März 2023, 18:00–18:15, SCH/A215

Self-absorption experiments with quasi-monochromatic photon beams: Model-independent level widths with high precision — •D. Savran¹, J. Isaak², A.D. Ayangeakaa^3,4, M. Beuschlein², S.W. Finch^4,5, D. Gribble², A. Gupta², J. Hauf², R.V.F. Janssens^3,4, S.R. Johnson^3,4, P. Koseoglou², T. Kowalewski^3,4, B. Löher¹, O. Papst², N. Pietralla², A. Saracino^3,4, N. Sensharma^3,4, and V. Werner² — ¹GSI, Darmstadt — ²IKP, TU Darmstadt — ³UNC, Chapel Hill, NC, USA — ⁴TUNL, Durham, NC, USA — ⁵Duke U., Durham, NC, USA

We have developed a novel variation of the relative self-absorption (RSA) technique in order to adapt this method to quasi-monochromatic photon beams produced via Laser-Compton Backscattering (LCB) [1]. The approach combines the advantages of LCB beams with the model-independent determination of level widths via the RSA method. In this contribution the method itself as well as preliminary results of its pioneering application to measure the B(E2, 0₁⁺ → 2₁⁺) transition strength of the first excited state in ¹²C to a precision of better than 2% will be presented.
Supported by the State of Hesse, grant "Nuclear Photonics" (LOEWE program) and the Research Cluster ELEMENTS (Project-ID 500/10.006), the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) - Project-ID 279384907 - SFB 1245 and the U. S. DOE Grant No. DE-FG02-97ER41041 and No. DE-FG02-97ER41033.
[1] D. Savran and J. Isaak, Nucl. Inst. and Meth. A 899, 28 (2018).