Darmstadt 2016 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 68: Structure and Dynamics of Nuclei XII
HK 68.2: Vortrag
Freitag, 18. März 2016, 14:30–14:45, S1/01 A03
Study of the Photon Strength Function in Te-128 — •Johann Isaak1,2, Tobias Beck3, Vera Derya4, Udo Gayer3, Bastian Löher5, Norbert Pietralla3, Christopher Romig3, Deniz Savran5, Joel Silva1,2, Makbule Tamkaş1,6, Werner Tornow7, Henry R. Weller7, Andreas Zilges4, and Markus Zweidinger3 — 1EMMI, Darmstadt — 2FIAS, Frankfurt — 3IKP, TU Darmstadt — 4IKP, University of Cologne — 5GSI, Darmstadt — 6Graduate School of Natural and Applied Sciences, Yildiz Technical University, Istanbul — 7TUNL, Duke University, Durham, USA
The Photon Strength Function (PSF) is a crucial input parameter for statistical model calculations such as Hauser-Feshbach calculations to study the nucleosynthesis of the elements in the universe.
In practice, it is a challenging task to determine the PSF experimentally. Therefore, photon-scattering experiments were performed at the High Intensity γ-ray Source (HIγS) at Duke University, Durham, USA. Due to the monochromatic photon beam that is provided at HIγS, the excitation energy is well known as well as the ensemble of states that are populated, i.e. mainly J=1 states. The emitted photons from the subsequent deexcitation are measured with the γ-γ coincidence setup γ3 [1]. With this experimental approach it is possible to determine the PSF for dipole transitions on top of the ground state and the PSF build on low-lying excited states.
Recent results on Te-128 are presented and discussed.
B. Löher et al., NIM A 723 (2013) 136.
* Supported by HA216/EMMI and DFG (SFB 634 and ZI 510/7-1).