Journal Article

FZJ-2020-04782

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Scaling laws for the depolarization time of relativistic particle beams in strong fields

Thomas, J. (Corresponding author) ; Hützen, A.FZJ* ; Lehrach, A.FZJ* ; Pukhov, A. ; Ji, L. ; Wu, Y. ; Geng, X. ; Büscher, M.FZJ*

2020
American Physical Society College Park, MD

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Please use a persistent id in citations: http://hdl.handle.net/2128/26303  doi:10.1103/PhysRevAccelBeams.23.064401

Abstract: The acceleration of polarized electrons and protons in strong laser and plasma fields is a very attractive option to obtain polarized beams in the GeV range. We investigate the feasibility of particle acceleration in strong fields without destroying an initial polarization, taking into account all relevant mechanisms that could cause polarization losses, i.e. the spin precession described by the T-BMT equation, the Sokolov-Ternov effect and the Stern-Gerlach force. Scaling laws for the (de-)polarization time caused by these effects reveal that the dominant polarization limiting effect is the rotation of the single particle spins around the local electromagnetic fields. We compare our findings to test-particle simulations for high energetic electrons moving in a homogeneous electric field. For high particle energies the observed depolarization times are in good agreement with the analytically estimated ones.

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Contributing Institute(s):

1. Elektronische Eigenschaften (PGI-6)
2. Kernphysikalische Großgeräte (IKP-4)

Research Program(s):

1. 522 - Controlling Spin-Based Phenomena (POF3-522) (POF3-522)
2. 631 - Accelerator R & D (POF3-631) (POF3-631)

Appears in the scientific report 2020

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Database coverage:
; ; ; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; DOAJ Seal ; Essential Science Indicators ; IF < 5 ; JCR ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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