A theoretical prediction of the possibility of stacking faults in rare-gas clusters was verified experimentally. It was established that a defect face-centered cubic structure had been observed in clusters with mean sizes of more than 1500 atoms. It was found that the stacking fault density was a linear function of the inverse cube root of the number of atoms in the cluster. The number of so-called defect planes was equal to 4, and did not depend upon the cluster size.

S.I.Kovalenko, D.D.Solnyshkin, E.T.Verkhovtseva, V.V.Eremenko: Chemical Physics Letters, 1996, 250[3-4], 309-12