[en] Developments in the study of processes leading to a final state of three nucleons are reviewed in the light of exact calculations of breakup cross sections with separable potentials. (B.F.G.)

[en] Experimental data on total cross-sections and elastic scattering are reviewed from threshold to the GeV region, with particular attention to recent results. (author)

[en] There has been an impressive quantity and quality of polarization data acquired during the past few years on the mass 3 to mass 6 systems, essentially with beams of polarized protons and deuterons. The discussion of polarization effects is limited to those of the three-nucleon system. (author)

[en] Nuclear bremsstrahlung cross sections in few body systems from recent experiments are compared with a current theoretical explanation based on phase shifts describing the corresponding elastic scattering reactions. (B.F.G.)

[en] The uncertainties in the nucleon-nucleon potential are the basic problem of few-body scattering. Two-body potential parameters may be obtainable from investigation of the differential cross sections of few-body reactions. (B.F.G.)

[en] Although some variational calculations have been carried out a long time ago on the three-nucleon system, the actual solutions with complicated realistic two-nucleon interactions have been achieved quite recently. The main reasons for this are that on the one hand there existed no correct mathematical framework of the problem until the work of Faddeev, and on the other hand new computational techniques were needed to solve the resulting three-body equations. Here we would like to review one kind of computational method which has proven to be successful. (author)

[en] To a large extent, the nuclear force is a two body force, so the two body problem is the central problem of nuclear physics. As the only two nucleon bound state, the deuteron has been the object of intense experimental and theoretical interest for four decades. Yet, our knowledge of this simplest of all nuclei is far from satisfactory. Many of its properties have been measured to great precision. To date, our understanding of its structure has remained much less precise. (author)

[en] The few body system is a rich source of information for hadron dynamics. How some of this information manifests itself and how the general constraints of quantum mechanics help or restrict its extraction will be discussed. Examples will include the theory of final state interactions, of meson-baryon resonances and of meson degrees of freedom in the nucleus. (author)

[en] It has generally been accepted that a study of three-particle systems can yield new information regarding details of the two-particle interactions, and in particular the short distance behavior of the nuclear force. This possibility has stimulated a great deal of work on the trinucleon system during the past decade. In view of the nature of the results which this program has produced, it is my belief that we must reassess both our expectations of what can be learned from such studies, and the techniques which we apply to the problem. The basic idea of the boundary-condition (BC) approach is to characterize a three-body state in such a way as to completely isolate effects arising from the off-shell degrees of freedom. Neither half-on-shell t-matrices nor the Faddeev equations are required as a starting point. (author)

[en] The kinetic energy operator for three bodies of equal mass derived by considering translation, rotation and vibration separately is applied to nuclear and molecular three-body systems. (B.F.G.)