SAMOP 2023 – wissenschaftliches Programm

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A: Fachverband Atomphysik

A 20: Poster II

A 20.4: Poster

Mittwoch, 8. März 2023, 16:30–19:00, Empore Lichthof

Towards studying the collective effects in laser-driven heavy ion acceleration — •Erin G. Fitzpatrick, Laura D. Geulig, Maximilian J. Weiser, Veronika Kratzer, Vitus Magin, Florian H. Lindner, and Peter G. Thirolf — Ludwig-Maximilians-Universität München

The ultra-high ion bunch density offered from laser-driven ion acceleration may affect the stopping behavior in matter via collective effects and ultimately enable to establish new nuclear reaction schemes like the ’fission-fusion’ mechanism, aiming to generate extremely neutron-rich isotopes near N=126 [1]. One prerequisite needed for the realization of this mechanism is laser driven heavy ions with extremely high bunch densities. Experimental campaigns at different PW class lasers resulted in the acceleration of gold ions with bunch densities of about 10¹³ cm⁻³ (10¹⁶ cm⁻³) at 1mm (100 µm) from the target [2]. At the Center for Advanced Laser Applications (CALA) we are working towards measuring collective effects in laser-driven ion bunches, like a potential reduction in stopping power. Focusing on ion bunch energy deposition in CR-39 detectors downstream (approx. 0.1mm) from the ion source, we must consider shot-to-shot fluctuations of the ion bunch properties that require an experimental design that quantifies particle stopping while also providing a shot specific reference spectrum. An overview of the current results and developing experimental design is given.

[1] D. Habs et al., Appl. Phys. B 103, 471-484 (2011)

[2] F.H. Lindner et al., Sci. Rep. 12, 4784 (2022)