Spectroscopy of radioactive beams from single-nucleon knockout reactions: Application to the sd shell nuclei Al-25 and P-26,P-27,P-28

Measurements of deexcitation gamma rays in coincidence with the momentum di stribution of the projectile residues produced in reactions of the type Be- 9(P-28, Si-27 + gamma)X at energies around 65 MeV/u are used to study singl e-nucleon stripping to individual states. The cross sections are compared w ith calculations based on an eikonal model description of the reaction and the shell model. The measurements indicate that the halo character of the g round st:lte and other detailed spectroscopic information can be derived us ing knockout reactions in inverse kinematics. [S0031-9007(98)07825-9].