Dresden 2020 – wissenschaftliches Programm
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AKBP: Arbeitskreis Beschleunigerphysik
AKBP 1: Particle Sources
AKBP 1.1: Vortrag
Montag, 16. März 2020, 15:00–15:15, MOL 213
Development of polarized sources with new laser techniques — •Chrysovalantis S. Kannis1,2, Ralf Engels1, Anna Hützen1,3, Lukas Huxold3, Ilhan Engin1, Dimitris Sofikitis4, T. Peter Rakitzis5,6, Andreas Lehrach1,2, and Markus Büscher1,3 — 1Forschungszentrum, Jülich, Germany — 2RWTH University, Aachen, Germany — 3HHU, Düsseldorf, Germany — 4UOI, Ioannina, Greece — 5FORTH, Heraklion, Greece — 6UOC, Heraklion, Greece
Molecular photodissociation and optical pumping are two innovative laser-based techniques for the production of macroscopic spin-polarized samples. The first is used for the production of high density spin-polarized hydrogen and deuterium atoms from UV photodissociation of hydrogen and deuterium halides (e.g. HBr, HCl, DI, etc.). The second is used for the production of nuclear-polarized 3He. After the ionization of the atomic gases, the spin-polarized ion targets are useful for the study of laser-driven plasma acceleration induced by a high-power laser system. Theoretical calculations indicate that laser-induced acceleration of polarized protons/deuterons of kinetic energies up to several GeV is feasible. Another important application is the polarized laser-fusion. Nuclear-spin polarization plays a fundamental role in the dynamics of fusion reactions and it has been shown that the D-T and D-3He reaction cross sections can be increased by ∼50%. This reactivity enhancement has not been observed in plasma, nor has polarized D-D fusion been measured. However, the aforementioned methods can offer the required densities for such experiments.