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Bonn 2020 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 37: Structure and Dynamics of Nuclei VII

HK 37.4: Vortrag

Mittwoch, 1. April 2020, 17:30–17:45, J-HS E

Photofission on 238U using quasi-monochromatic, polarized γ -rays — •M. Peck1, J. Enders1, S.W. Finch2, A. Göök3, C.R. Howell2, A.-L. Katzenmeier1, A. Oberstedt4, S. Oberstedt3, J.A. Silano5, A.P. Tonchev5, and W. Tornow31Institut für Kernphysik, TU Darmstadt, Germany — 2Duke University and TUNL, Durham, USA — 3European Commission, Joint Research Centre, Geel, Belgium — 4ELI-NP, Măgurele, Romania — 5Nuclear and Chemical Sciences Division, LLNL, Livermore, USA

Photofission on actinides using quasi-monochromatic, polarized γ -rays from Laser-Compton-Backscattering (LCB) has been studied recently at Duke University’s High-Intensity γ -ray Source (HI γ S). Fission-fragment mass and energy distributions as well as polar and azimuthal angular distributions are determined using a position-sensitive twin Frisch-grid ionization chamber. We have investigated the feasibility of measuring prompt fission neutrons using four liquid scintillator detectors. Results for the 238U( γ ,f) reaction at incident linear/circular polarized γ -ray energy of 11.2 MeV at a flux of up to 4.0 × 10 8   γ /s will be presented.

Supported by BMBF (05P2018RDEN9), HMWK (LOEWE research cluster "Nuclear Photonics") and DOE (DE-FG02-97ER41033).

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