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SUMMARY:Spin Dynamics in Plasmas
DTSTART:20261013T124500Z
DTEND:20261013T134500Z
DTSTAMP:20261003T110000Z
UID:indico-event-26006@indico.gsi.de
CONTACT:st.kuschel@gsi.de\;c.deguchi@gsi.de
DESCRIPTION:Speakers: Markus Büscher (Forschungszentrum Jülich(FZJ))\n\n
 The interaction of spin-polarized particles in plasmas has developed from 
 a largely theoretical topic into an emerging experimental field with poten
 tial applications ranging from novel polarized particle sources to nuclear
  fusion. A central question is whether an initially prepared spin polariza
 tion can survive the extremely strong and rapidly varying electromagnetic 
 fields encountered in laser-produced plasmas.\nOver the past years\, our g
 roup and collaborators have developed the theoretical framework for descri
 bing spin dynamics in plasma-based accelerators\, including the implementa
 tion of spin precession in particle-in-cell simulations. These studies ind
 icate that high degrees of polarization can be preserved during laser-plas
 ma acceleration and have led to concepts for generating energetic polarize
 d proton and electron beams.\nIn this talk\, I will review the underlying 
 spin dynamics and the mechanisms that can lead to polarization loss\, and 
 discuss strategies for producing and accelerating polarized electrons and 
 ions. Particular emphasis will be placed on our recent experiments at the 
 PHELIX laser at GSI\, where we demonstrated for the first time that the nu
 clear polarization of pre-polarized ^3He is preserved during laser-driven 
 acceleration to MeV energies. This result provides experimental support fo
 r the concept of using pre-polarized targets in high-intensity laser-plasm
 a experiments.\nFinally\, I will discuss the prospects for polarized fusio
 n. While the PHELIX experiments demonstrate that nuclear polarization can 
 survive the extreme conditions of a laser-produced plasma\, a major challe
 nge for future fusion experiments is the production and delivery of suffic
 iently large quantities of highly polarized fuel. Possible pathways toward
  overcoming this limitation and realizing experiments with polarized fusio
 n fuel will be presented.\n\nhttps://indico.gsi.de/event/26006/
LOCATION:SB3 3.170a (GSI)
URL:https://indico.gsi.de/event/26006/
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