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Mainz 2022 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 50: Structure and Dynamics of Nuclei VIII

HK 50.2: Talk

Wednesday, March 30, 2022, 16:30–16:45, HK-H6

Status report on the progress on the analysis of the NewSUBARU data — •Nikolina Lalić1, Thomas Aumann1,2, Takashi Ariizumi3, Patrick van Beek1, Ioana Gheorghe4, Heiko Scheit1, Dmytro Symochko5, and Hiroaki Utsunomiya31Technische Unitversität Darmstadt, Germany — 2GSI Helmholtzzentrum, Germany — 3Department of Physics, Konan University, Japan — 4"Horia Hulubei" National Institute for R & D in Physics and Nuclear Engineering (IFIN HH), Romania — 5Physikalisch-Technische Bundesanstalt (PTB), Germany

The photoneutron cross sections of 112Sn, 116Sn, 120Sn and 124Sn were measured in (γ,xn) reactions, where x ∈ [1,4], using a quasi-monochromatic laser Compton-scattering γ-ray beam at the NewSUBARU facility. The goal of the experiment is to resolve the long-standing discrepancy of the total and partial cross sections measured by the Livermore and the Saclay groups. Measurements were done with γ energies from 8 MeV to 38 MeV. As a neutron counter a detector with a flat efficiency was used to take advantage of the direct neutron-multiplicity sorting technique. The (γ,xn) cross sections x ∈ [1,4] will be determined as well as the total photo absorption cross sections.
In this report the experiment and the current state of the ongoing analysis will be presented.
Suported by HMWK (LOEWE centre "Nuclear Photonics") and DFG (SFB 1245).

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