Phase separation in mixed argon-xenon clusters
  In this paper, electron diffraction and optical methods are used together for the first time to study the problem of phase equilibrium in binary clusters of heavy rare gases. For the argon-xenon system, a new effect of its decay into pure components with a sharp interface between the xenon core and the argon shell is observed. 
O.G. Danylchenko, Yu.S. Doronin, S.I. Kovalenko, V.N. Samovarov