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Träfflista för sökning "WFRF:(Mielke S) "

Sökning: WFRF:(Mielke S)

  • Resultat 1-10 av 83
  • [1]234567...9Nästa
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1.
  • Tabiri, S, et al. (författare)
  • 2021
  • swepub:Mat__t
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  • 2021
  • swepub:Mat__t
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  • Augustyniak, W., et al. (författare)
  • Polarization of a stored beam by spin-filtering
  • 2012
  • Ingår i: Physics Letters B. - : Elsevier. - 0370-2693 .- 1873-2445. ; 718:1, s. 64-69
  • Tidskriftsartikel (refereegranskat)abstract
    • The PAX Collaboration has successfully performed a spin-filtering experiment with protons at the COSY-ring. The measurement allowed the determination of the spin-dependent polarizing cross section, that compares well with the theoretical prediction from the nucleon-nucleon potential. The test confirms that spin-filtering can be adopted as a method to polarize a stored beam and that the present interpretation of the mechanism in terms of the proton-proton interaction is correct. The outcome of the experiment is of utmost importance in view of the possible application of the method to polarize a beam of stored antiprotons.
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9.
  • Oellers, D., et al. (författare)
  • New experimental upper limit of the electron-proton spin-flip cross-section
  • 2014
  • Ingår i: Nuclear Instruments and Methods in Physics Research Section A. - 0168-9002 .- 1872-9576. ; 759, s. 6-9
  • Tidskriftsartikel (refereegranskat)abstract
    • In a previous publication, measurements of the depolarization of a stored proton beam by interaction with a co-propagating unpolarized electron beam at low relative energy have been presented and an upper limit of about 3 x 10(7) b for the electron-proton spin flip cross-section was determined. A refined analysis presented in this paper reduces the previous upper limit by a factor of three by the introduction of a new procedure that, also makes use of non-identified particles.
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10.
  • Oellers, D., et al. (författare)
  • Polarizing a stored proton beam by spin flip?
  • 2009
  • Ingår i: Physics Letters B. - : Elsevier. - 0370-2693 .- 1873-2445. ; 674:4-5, s. 269-275
  • Tidskriftsartikel (refereegranskat)abstract
    • We discuss polarizing a proton beam in a storage ring, either by selective removal or by spin flip of the stored ions. Prompted by recent, conflicting calculations, we have carried out a measurement of the spin-flip cross section in low-energy electron–proton scattering. The experiment uses the cooling electron beam at COSY as an electron target. The measured cross sections are too small for making spin flip a viable tool in polarizing a stored beam. This invalidates a recent proposal to use co-moving polarized positrons to polarize a stored antiproton beam.
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  • Resultat 1-10 av 83
  • [1]234567...9Nästa

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