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Few-Body Systems

, Volume 43, Issue 1–4, pp 51–56 | Cite as

Experiments on few-nucleon systems at MAMI

  • M. O. Distler
Article
  • 19 Downloads

Abstract

The experimental effort at the Mainz Microtron with respect to few-body physics is focused on a number of selected topics. The structure of 3He has been studied in the reactions \(^3\vec{{\rm H}}{\rm e}(\vec{e},e{\prime}n)\) and \(^3\vec{{\rm H}}{\rm e}(\vec{e},e{\prime}p)\) with large (transversal) missing momenta and in quasi-elastic electron scattering. Experiments to determine the neutron electric form factor G en have been performed – a measurement at a four-momentum transfer Q 2 ∼ 1.5(GeV/c)2 took place in July 2007. Electromagnetically induced two-nucleon knockout has been investigated in order to study the role of correlated nucleon-nucleon motion in the nucleus. Measurements of the (e,epn) reaction on 3He and 16O were performed for the first time. A triple-polarization experiment of type \(^3\vec{{\rm H}}{\rm e}(\vec{e},e{\prime}\vec{p})d\) has been performed in August 2007, where, in addition, the spin of the knocked-out proton is analyzed. This measurement provides information on the spin-dependent momentum distribution of proton-deuteron clusters in the 3He nucleus. By using this deuteron-tagging method spin-polarized 3He might also serve as an effective polarized proton target for electron scattering experiments.

Keywords

Electric Form Factor Polarize Electron Beam Dipole Form Factor Polarize Proton Target Electron Scattering Experiment 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag 2008

Authors and Affiliations

  1. 1.Institute for Nuclear PhysicsUniversity of MainzMainzGermany

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