https://doi.org/10.1007/s100530050174
Heavy ion induced cluster formation and fragmentation phenomena in amorphous graphite
Pakistan Institute of Nuclear Science & Technology,
P.O. Nilore, Islamabad, Pakistan
Corresponding author: a pinstech@paknet1.ptc.pk
Received:
2
January
1998
Accepted:
5
March
1998
Published online: 15 September 1998
A study has been conducted into the mechanisms of evolution of clusters and
their subsequent fragmentation under energetic heavy ion bombardment of
amorphous graphite. The evolving clusters and their subsequent fragmentation
under continuing ion bombardment are revealed by detecting various clusters
in the energy spectra of the Direct Recoils (DRs) emitted as a result of
collisions between ions and surface constituents. The successive DR spectra
reveal that the energetics of 
bond formation as well as any subsequent
fragmentation can be related to the processes of energy dissipation in a
cylindrical volume of a few Å surrounding the ion path. The dependence
of 
formation or 
fragmentation is seen to
be a function of the ionic stopping powers in this cylindrical volume.
PACS: 36.40.-d – Atomic and molecular clusters / 79.20.-m – Impact phenomena (including electron spectra and sputtering)
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 1998
