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Title: Polarization measurement of laser-accelerated protons

We report on the successful use of a laser-driven few-MeV proton source to measure the differential cross section of a hadronic scattering reaction as well as on the measurement and simulation study of polarization observables of the laser-accelerated charged particle beams. These investigations were carried out with thin foil targets, illuminated by 100 TW laser pulses at the Arcturus laser facility; the polarization measurement is based on the spin dependence of hadronic proton scattering off nuclei in a Silicon target. We find proton beam polarizations consistent with zero magnitude which indicates that for these particular laser-target parameters the particle spins are not aligned by the strong magnetic fields inside the laser-generated plasmas.
Authors:
; ; ; ; ; ;  [1] ;  [1] ;  [2] ;  [3] ; ; ; ; ;  [4] ; ;  [5]
  1. Institut für Kernphysik and Jülich Center for Hadron Physics, Forschungszentrum Jülich, 52425 Jülich (Germany)
  2. (PGI-6), Forschungszentrum Jülich, 52425 Jülich (Germany)
  3. (Germany)
  4. Institute for Laser- and Plasma Physics, Heinrich-Heine Universität Düsseldorf, Universitätsstr. 1, 40225 Düsseldorf (Germany)
  5. Institute for Advanced Simulation, Jülich Supercomputing Centre, Forschungszentrum Jülich, 52425 Jülich (Germany)
Publication Date:
OSTI Identifier:
22252078
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 21; Journal Issue: 2; Other Information: (c) 2014 Author(s); Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; CHARGED PARTICLES; DIFFERENTIAL CROSS SECTIONS; LASER TARGETS; LASER-PRODUCED PLASMA; LASERS; MAGNETIC FIELDS; MEV RANGE 01-10; POLARIZATION; PROTON BEAMS; PROTON SOURCES; PROTONS; SILICON; SPIN