In-situ microscopy study of nanocavity shrinkage in Si under ion beam irradiation M.-O. Ruault, M. C. Ridgway, F. Fortuna, H. Bernas and J. S. Williams Eur. Phys. J. AP, 23 1 (2003) 39-40 Published online: 11 December 2002 DOI: 10.1051/epjap:2002120