[en] Angular and kinetic energy correlations between two α-particles, belonging to a single plane or to two mutually normal planes, have been measured in the reaction ⁴⁰Ar+sup(nat)Ag at the energy of 285 MeV. The angular momentum has been estigated for a heavy reaction product which is the main source o the α-particles. An evidence has been found in favour of the massive nucleon transfe. reaction mechanism for processes induced by ⁴⁰Ar ions. It was found that the probability of the α-particle coincidence decreases if the α-particles are emitted into backward directions lying in a single plane, on the same side with respect to the beam