ION BEAM MATERIALS ANALYSIS AND MODIFICATIONS AT keV TO MeV ENERGIES AT THE UNIVERSITY OF NORTH TEXAS

Bibhudutta Rout,Mangal S Dhoubhadel,Floyd D Mcdaniel,Gyanendra Bohara,Venkata C Kummari,Gary A Glass,Szabolcs Z Szilasi,Wickramaarachchige J Lakshantha,Prakash R Poudel,Jack E Manuel

doi:10.1142/s2010194514601471

Abstract

The University of North Texas (UNT) Ion Beam Modification and Analysis Laboratory (IBMAL) has four particle accelerators including a National Electrostatics Corporation (NEC) 9SDH-2 3 MV tandem Pelletron, a NEC 9SH 3 MV single-ended Pelletron, and a 200 kV Cockcroft-Walton. A fourth HVEC AK 2.5 MV Van de Graaff accelerator is presently being refurbished as an educational training facility. These accelerators can produce and accelerate almost any ion in the periodic table at energies from a few keV to tens of MeV. They are used to modify materials by ion implantation and to analyze materials by numerous atomic and nuclear physics techniques. The NEC 9SH accelerator was recently installed in the IBMAL and subsequently upgraded with the addition of a capacitive-liner and terminal potential stabilization system to reduce ion energy spread and therefore improve spatial resolution of the probing ion beam to hundreds of nanometers. Research involves materials modification and synthesis by ion implantation for photonic, electronic, and magnetic applications, micro-fabrication by high energy (MeV) ion beam lithography, microanalysis of biomedical and semiconductor materials, development of highenergy ion nanoprobe focusing systems, and educational and outreach activities. An overview of the IBMAL facilities and some of the current research projects are discussed.

Highlights

At this time, there are more than 30,000 particle accelerators in operation around the world that are used for research and applications in medicine, industry, energy, the environment, national security, and discovery science
In this paper we have presented a summary of the Ion Beam Modification and Analysis Laboratory (IBMAL) accelerator facilities and current research projects
At IBMAL, current research involves synthesis of optically active nanostructures in Si based matrices via ion implantation and the investigation of the origin and efficiency of emission and absorption of light at various wavelength ranges due to these nanostructures.[8,9,10,11,12]

Summary

Introduction

There are more than 30,000 particle accelerators in operation around the world that are used for research and applications in medicine, industry, energy, the environment, national security, and discovery science. The increased utility and applications of particle accelerators have been presented at a number of conference venues and are well described at a U.S Department of energy website, www.acceleratorsamerica.org. * Present address at Intel Corporation, 2501 NW 229th Avenue, Hillsboro, OR 97124, USA. This is an Open Access article published by World Scientific Publishing Company. At this symposium, working groups discussed the needs, challenges, areas of greatest promise, and bridging the gap between accelerator research and technological deployment for the above topics. In this paper we have presented a summary of the IBMAL accelerator facilities and current research projects

Light emitting materials

Materials analysis and fabrication using ion microprobes

Experimental Facilities and Techniques

Results and Discussion

Conclusions