טכניון מכון טכנולוגי לישראל
הטכניון מכון טכנולוגי לישראל - בית הספר ללימודי מוסמכים  
Ph.D Thesis
Ph.D StudentKaplan Andrey
SubjectIon-Surface Impact Phenomena: Disintegration of C60
Ions and Formation of Endohedral Fullerenes
DepartmentDepartment of Chemistry
Supervisor Professor Eliezer Kolodney


Abstract

In this thesis we have studied two subjects related with the collisions of energetic ions with surfaces. Both concerns collisional behavior of the  molecule.   was utilized in our experiments both as a collider striking a metallic surface and as a surface supported target for an energetic ion collision. The first subject deals with the collisional fragmentation of the  negative ion, impacting a gold surface, at the impact energy range of = 80 - 1000 eV and at several scattering angles. The second one deals with the intramolecular penetration of an atomic ion () into a surface adsorbed  molecule (on a gold surface). The steady state coverage is measured by kinetic (growth/etching) experiments to be in the sub-monolayer coverage. The combined penetration and ejection step of the so-formed endohedral fullerene  is shown to be a single collision event. A maximum yield around 80 ± 5 eV  impact energy was found.