Contribution to a conference proceedings/Contribution to a book

FZJ-2026-03141

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Polarized Fusion

Engels, R. W. (Corresponding author)FZJ*

2026

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Please use a persistent id in citations: doi:10.34734/FZJ-2026-03141

Abstract: For 90 years the advantages of polarized fuel for future fusion reactors have been discussed andare becoming more and more important. Besides the increased energy output "polarized fusion"can help to solve technological challenges like the tritium breeding within the blanket by focusingthe neutrons on dedicated wall areas. In addition, the energy extraction from the plasma canbe optimized, the maintenance of the blanket reduced and the lifetime of the superconductingmagnets increased to reduce the costs of a future tokamak or stellarator. For laser-induced inertialfusion even the necessary laser power can be reduced for energy production.But before polarized fuel can play an important role for fusion energy production some work needsto be done. Experiments with polarized beams and targets at accelerators have shown that nuclearpolarization can be produced and stored for 3𝐻𝑒, 𝐷, 𝐻 and, therefore, 𝑇. But for the necessaryamounts of polarized fuel for energy production new techniques have to be developed. Then, in anext step, the polarization lifetime in a fusion plasma must be investigated. Here, first tests witha laser-induced plasma from a polarized 3𝐻𝑒 gas jet have shown that the polarization survives atleast partially.

Keyword(s): Nuclei and Particles (1st) ; Nuclear Physics (2nd)

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Contributing Institute(s):

1. Experimentelle Hadrondynamik (IKP-2)

Research Program(s):

1. 612 - Cosmic Matter in the Laboratory (POF4-612) (POF4-612)

Appears in the scientific report 2026

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