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HK: Fachverband Physik der Hadronen und Kerne
HK 50: Structure and Dynamics of Nuclei VIII
HK 50.6: Talk
Wednesday, March 30, 2022, 17:30–17:45, HK-H6
Temperature-dependent relative self absorption measurements in 27Al at DHIPS — •P. Koseoglou, M. L. Cortes, J. Isaak, V. Werner, O. Papst, J. Kleemann, M. Beuschlein, N. Pietralla, U. Ahmed, K. E. Ide, I. Jurosevic, C. Nickel, M. Spall, T. Stetz, and R. Zidarova — Institut für Kernphysik, Technische Universität Darmstadt, 64289 Darmstadt, Germany
Self-absorption measurements probe the photoexcitation process of nuclear resonances and, thus, provide direct sensitivity to ground-state transition widths [1-3]. First temperature-dependent relative self-absorption (T-RSA) in nuclear resonance fluorescence measurements on 27Al were performed at the Darmstadt High Intensity Photon Setup (DHIPS) of S-DALINAC. A technique was tested in which measurements are done at multiple absorber temperatures. The advantage of this technique, over the regular RSA, is the possibility to overcome the need for theory input on the effective temperatures, which can be complicated for compound materials, and the uncertainties that they introduce in the measured level widths [2]. The technique and the preliminary results of the first measurements will be presented.
This work was supported by the State of Hesse under grant "Nuclear Photonics" within the LOEWE program.
[1] N. Pietralla et al., Phys. Rev. C 51 1021 (1995).
[2] U. Friman-Gayer et al., Phys. Rev. Lett. 126 102501 (2021).
[3] A. Zilges, D. L. Balabanski, J. Isaak, N. Pietralla, Prog. Part. Nucl. Phys. 122 103903 (2022).