Nano-scale surface modification of materials with slow, highly charged ion beams

Nanoscopic surface modification by slow ion bombardment

We present systematic scanning tunneling microscopy (STM)/atomic-force microscopic (AFM) investigations on nanoscopic defect production at atomically clean surfaces of SiO2, Al2O3 and highly oriented pyrolytic graphite (HOPG) after bombardment by slow (impact energy ≤ 1.2 keV) singly and multiply charged ions under strict ultra-high vacuum (UHV) conditions. Combined STM and AFM studies show tha...

Ecris Developments towards Intense High Brightness Highly-charged Ion Beams *

To meet the increasing needs of modern heavy ion accelerators, ECR ion source must be developed to deliver high intensity high brightness high charge state ion beams, in terms of accelerator output power and beam transmission efficiency. With the success in several laboratories on fully superconducting ECR ion source development, the performance of highly charged heavy ion beams have been great...

Use of Intense Ion Beams for Surface Modification and Creation of New Materials

Hybrid Ion Sources for the Production of Highly Charged Ion Beams from Metals

The ECLISSE experiment proved in 2002 the possibility to couple a Laser Ion Source (LIS) with an Electron Cyclotron Resonance Ion Source (ECRIS) in order to obtain ion beams from refractory metals with a cw beam structure. The use of a LIS inside the ECRIS plasma chamber may permit to increase the beam current and the ion charge state. The use of 3 generation ECRIS may extend the capabilities o...

Production of negatively charged radioactive ion beams

Beams of short-lived radioactive nuclei are needed for frontier experimental research in nuclear structure, reactions, and astrophysics. Negatively charged radioactive ion beams have unique advantages and allow for the use of a tandem accelerator for post-acceleration, which can provide the highest beamquality and continuously variable energies. Negative ion beams can be obtainedwith high inten...