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The heavy and medium nuclei with angular high momentum are reconsidered. The study of these nuclei is introduced according to the way of building up the angular momentum. At high angular momentum, the moments of inertia of that nuclei are investigated. A study for the path of the Yrast spectra is given in the deformation space. Then, the nuclear collective motions and the single particle motion in a rotating field are considered and studied in both cases of the absence and the presence of pair correlations.Kollektive Kernrotationen und die Einzelteilehcnbewegung in einem rotiercnden Potential I n h a l t s u b e r s i c h t . Schwere und mittelschwere Kerne mit hohem Drehimpuls werden hinsichtlich der Wege des Aufbaues dieses Drehimpulses betrachtet . Das Tragheitsmoment dieser Kerne, die kollektive Kernrotation und die Einzelteilchenbewegung in einem rotierenden Potential werden fur die Falle vorhandener und fehlernder Paarkorrelationen untersucht.

The magnetic form factors for the 3He and 3H nuclei have been calculated for different values of momentum transfer. The three-nucleon ground-state wave function is expressed in momentum space and is obtained from the solution of the Faddeev equations with realistic two-body potentials. The potential used is taken from the meson theory to include different meson-exchange contributions satisfying the requirements of current conservation. The different meson-exchange currents and their contributions to the trinucleon magnetic form factors are calculated. The virtual Δ-excitation and the meson–nucleon vertices form factors are included in the 3He and 3H magnetic-form-factors calculations. The present results show the importance of the higher momentum transfer region as being a good source of information to the short-range processes in the nuclear medium. Our results for the 3He and 3H magnetic form factors are in good agreements with the experimental data. The inclusion of the ρ and ω meson exchanges improves the agreement between positions of the minima of the magnetic form factors predicted and the experimental data.

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Effects of the three-nucleon forces on the tiiton binding energy are investigated using different models for which the nN scattering amplitudes for the off-mass-shell pions are extrapolated from the on-mass-shell data. In the independent model potential, the threenucleon forces are constructed using the chiral symmetry through partial conservation of the axial current vectors and current algebra. On the other hand, the three-nucleon forces in the dependent model potential are derived from an effective Lagrangian which is constrained by chiral and gauge symmetry. The effect of the long range 2T and the repulsive -Kp-exchange three-nucleon forces on the triton binding energy are investigated. The bound state triton binding energies are then calculated by solving the Faddeev equations with a Hamiltonian including the three-nucleon forces, using different nucleon-nucleon interactions. The pionic form factors are considered with different sets of the form factor cutoff,parameter A. Tie 27r-exchange forces with S-and P-wave amplitudes are found to overbind the triton binding energy by about 0.4 ~ 1.6 MeV. However, -Kp-exchange forces are found to reduce the 1-K exchange forces by about 18% of its contribution, to the triton binding energy.