Contribution to a conference proceedings/Contribution to a book

FZJ-2023-01656

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Development of polarized sources based on molecular photodissociation

Engels, R. W.FZJ* ; Kannis, C. (Corresponding author)FZJ* ; Büscher, M.FZJ* ; Lehrach, A.FZJ* ; Michailis, X. ; Rakitzis, P.

2023
Sissa Medialab Trieste, Italy

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Please use a persistent id in citations: http://hdl.handle.net/2128/34264  doi:10.22323/1.433.0032

Abstract: Molecular photodissociation is an innovative method for the preparation of polarized atoms andmolecules. It is a fundamental chemical process that involves the absorption of one or morepolarized photons by a molecule including its fragmentation into polarized atomic (or molecular)fragments. Recently, T. P. Rakitzis’ group produced high densities of spin-polarized hydrogenatoms applying molecular photodissociation to hydrogen halides. The obtained densities (10^19cm^−3) and short production times (ns timescales) surpass by several orders of magnitude conven-tional methods such as spin-exchange optical pumping and Stern-Gerlach spin separation. Thesedensity and time regimes make it an ideal candidate for a broad range of applications, e.g., laser-induced acceleration from polarized gas targets and polarized five-nucleon fusion reactions (d-3H,d-3He). The second has been shown to have an increased cross section by ∼50% compared to theunpolarized case. The photodissociation method has been adopted by M. Büscher’s group for theproduction of polarized proton and deuteron beams at the Forschungszentrum Jülich. Here, wereport on the production and detection scheme of these beams.

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

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Contributing Institute(s):

1. Experimentelle Hadrondynamik (IKP-2)
2. Kernphysikalische Großgeräte (IKP-4)
3. Elektronische Eigenschaften (IFF-9)

Research Program(s):

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

Appears in the scientific report 2023

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