Present status of electromagnetic interactions in light nuclei

Recent electron scattering experiments on the few-nucleon systems are presented. The interpretation of the data in terms of nucleon and meson degrees of freedom is discussed.Invited talk to the symposium Mesons and Light Nuclei IV, Bechyn, Czechoslovakia, September 5–10, 1988.     

Muon scattering and polarized nucleon structure functions

The formalism of the deep inelastic scattering is briefly outlined insisting on the evidence that the nucleon has point-like constituents. The physics behind the polarized structure is reviewed and their relation to the proton spin is discussed. The SMC experiment that is currently under way at CERN is presented at the end of the lecture.Lecture held at the Indian-Summer school on Electromagnetic and Weak Interactions of Particles with Nuclei, Sázava, Czechoslovakia, 6–11 September 1992.     

Electron scattering and the few-nucleon system

After a short discussion of the formalism for electron scattering the information on the neutron charge form factor is extracted from the deuteron structure function. The cross sections for electrodisintegration of the deuteron at threshold and the behaviour of the trinucleon magnetic form factors are shown to provide evidence for the importance of meson exchange currents in nuclei. The trinucleon system in isospin space is discussed at the and of the lecture.Lecture held at the Indian-Summer School on Electromagnetic and Weak Interactions of Particles with Nuclei, Sázava, Czechoslovakia, 6—11 September 1992.     

On the radial distribution of the 1f72 proton orbit

Cross sections for magnetic elastic electron scattering of high multipolarity from ⁵¹V and ⁵⁹Co have been measured. They are interpreted in terms of the rms radius of the $\text{1f}{}_{\mathrm{<mtext>7</mtext><mtext>2</mtext>}}$ proton orbit. The results for ⁵¹V and ⁵⁹Co 1f_{$\text{7}\text{2}$} rms radii are smaller by 3% and 9%, respectively, than predicted by the Hartree-Fock-Bogoliubov theory.