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SAMOP 2023 – wissenschaftliches Programm

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A: Fachverband Atomphysik

A 3: Interaction with Strong or Short Laser Pulses I (joint session A/MO)

A 3.2: Vortrag

Montag, 6. März 2023, 11:30–11:45, F303

Laser-Driven Acceleration of Gold Ions — •Laura Desiree Geulig, Erin Grace Fitzpatrick, Maximilian Weiser, Veronika Kratzer, Vitus Magin, Masoud Afshari, Jörg Schreiber, and Peter G. Thirolf — Ludwig-Maximilians-Universität München

The efficient acceleration of gold ions is a first step towards the 'fission-fusion' reaction mechanism, which aims at investigating the rapid neutron capture process in the vicinity of the N=126 waiting point [1]. In our recent measurement at the PHELIX laser with a pulse length of 500fs, for the first time, the laser-based acceleration of gold ions above 7 MeV/u was demonstrated. Additionally, individual gold charge states were resolved with unprecedent resolution [2]. This has allowed the investigation of the role of collisional ionization using a developmental branch of the particle-in-cell simulation code EPOCH [3], showing a much better agreement of the simulated charge state distributions with the experimentally measured ones than when only considering field ionization. This work is continued at the Centre for Advanced Laser Applications (CALA), using the ATLAS3000 laser (800nm central wavelength, 25 fs pulse length).

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

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

[3] M. Afshari et al., Sci.Rep. 12, 18260 (2022)

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