Hope
College Physics Department
Research Experiences for Undergraduates
Summer 2009
Project Summary
Research Experiences for Undergraduates
Summer 2009
Project Summary
|
Hope
College Physics Department Research Experiences for Undergraduates Summer 2009 Project Summary |
| Project Title: | A comparison of two ion beam analysis techniques |
| Student Name: | Mark Lunderberg |
| Student's Home Institution: | Hope College |
| Research Advisor: | Dr. Paul DeYoung and Dr. Graham Peaslee |
| Source of Support: | This material is based upon work supported by the National Science Foundation under NSF-REU Grant No. PHY-0452206, the National Science Foundation under grants MRI-0319523 and RUI-0651627. |
Ion Beam Induced Luminescence (IBIL) is an Ion Beam Analysis (IBA) technique that can be used in conjunction with the IBA method of Particle Induced X-ray Emission (PIXE) for geological analysis of minerals. In IBIL, light from ultraviolet to infrared is emitted by sample minerals during proton irradiation when transition metals, rare earth elements, or lattice defects are present in crystals. In this study, IBIL was compared to the established technique of cathodoluminescence (CL), which uses electron beam irradiation to induce luminescence. The goals of this comparison, conducted with hundreds of feldspar grains, are twofold. First, we wish to discover the causes of multiple unknown peaks in feldspar IBIL and CL spectra. Second, we wish to be able to use the peak caused by an iron III substitution for aluminum and the peak caused by a manganese II substitution at the M position in the feldspar lattice to determine the type of feldspar grain being examined.
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