Production of projectile-like fragments at intermediate energies

The momentum distributions of projectile-like fragments produced in the 40 Ar+ 9 Be reaction at E / A =90 MeV and the 16 O+ 12 C reaction at E / A =290 MeV were observed. A correlation between the width of the transverse momentum distribution and the velocity was found at E / A =90 MeV. Coulomb final-state interaction and AMD calculation cannot explain this correlation. A good agreement between EPAX2 and the production cross sections derived from observed momentum distribution of the fragments was found.