Göttingen 2025 – wissenschaftliches Programm

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AKBP: Arbeitskreis Beschleunigerphysik

AKBP 10: Novel Accelerator Concepts IV and Applications

AKBP 10.1: Vortrag

Donnerstag, 3. April 2025, 16:15–16:30, ZHG004

Studies on laser driven fission at CALA — •Maximilian J. Weiser, Erin G. Fitzpatrick, Laura D. Geulig, Jinbao Hong, and Peter G. Thirolf — Ludwig-Maximilians-Universität München, Garching, Germany

The field of laser ion acceleration has attracted great interest in the recent years as an alternative to classical accelerators due to its unique features like a small footprint, short bunch duration and solid state like bunch densities. Especially the latter is crucial for studying the so-called *fission-fusion* nuclear reaction mechanism which could help exploring the r-process nucleosynthesis of heavy elements in the Universe. A necessary preliminary study for realising this mechanism experimentally is to gain a better understanding how fission induced by light particles impinging onto high-Z elements performs [1]. For this reason, we developed a gas-based transportation system which enables us to transport the fission products away from our EMP-contaminated experimental chamber to a shielded HPGe γ-detector. In our first experimental campaign conducted at the Centre of Advanced Laser Applications (CALA) we found that the expected fission products could not be measured due to a to small yield arriving at the detector. Therefore, we are currently focusing onto improving the amount of produced fission fragments and the transport efficiency of the setup. This work has been funded by the BMBF under Grant No. 05P24WM2. We acknowledge the GSI target lab (Dr. Bettina Lommel) for providing the U targets. [1] D. Habs et al., Appl. Phys. B 103, 471-484 (2011)

Keywords: Laser-Driven Ion Acceleration; Fission-Fusion; Gas Jet; Fission Fragments