NEUTRON-DEFICIENT NUCLEI STUDIED WITH STABLE AND RADIOACTIVE BEAMS

Neutron-deficient nuclei close to the proton drip-line have been studi ed intensively in recent years. Measurements of ground-state proton em itters have mapped out the limits of nuclear stability above Sn-100. S uch experiments have allowed us to learn about the single-particle she ll structure far from stability. Studies of gamma-rays from N = Z nucl ei produced in fusion-evaporation reactions have revealed that their p roperties vary rapidly with small changes in Z, N and A because of lar ge oblate and prolate shell gaps at large deformation. Studies of thes e nuclei also reveal information about isospin mixing as a function of mass and potentially yield information about n-p pairing. The astroph ysical rp-process pathway Lies close to the N = Z line. Studies of fra gmentation reactions have allowed us to determine a lot of the informa tion needed to analyse the rp-process in detail. All of this informati on is limited, however, by the constraint of using stable beams and ta rgets. With beams of radioactive nuclei, classical spectroscopic techn iques such as Coulomb excitation and particle transfer studies will al low us to map out level properties in detail in nuclei far from stabil ity. Studies of fusion-evaporation reactions with beams of radioactive ions by using new, more sensitive detection techniques will allow us to study nuclei up to and beyond the drip-line in nuclei above 100Sn. At the same time such studies will allow us much greater access to the lighter N = Z nuclei.