April Ether Mark Baxmeyer Mary Mahon Advised ... - jinaweb.org
Transcript of April Ether Mark Baxmeyer Mary Mahon Advised ... - jinaweb.org
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PIXEPIXE
April EtherMark Baxmeyer
Mary MahonAdvised by Nancy Gibson
April EtherMark Baxmeyer
Mary MahonAdvised by Nancy Gibson
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Why PIXE?Why PIXE?
Won’t damage the sampleHelps determine the elemental composition of the sampleDetects very low traces of various elementsUsed in authenticating art, archeological artifacts, and geological specimens
Won’t damage the sampleHelps determine the elemental composition of the sampleDetects very low traces of various elementsUsed in authenticating art, archeological artifacts, and geological specimens
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What Is PIXE?What Is PIXE?
PIXE- Proton Induced X-ray EmissionPIXE- Proton Induced X-ray Emission
From the Division of Nuclear Solid State Physics at University of Leipzig
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Lab SetupLab Setup
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FN AcceleratorFN Accelerator
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Target RoomTarget Room
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Control RoomControl Room
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1983 Penny1983 PennyY-axis units are “Counts”“Counts” keep track of the number of times the detector absorbed a particular element’s X-rayX-axis units are “KeV”, which is a unit of energyEach element is identified by the energy of the X-ray it emitsX-rays are divided into K-alpha rays and K-beta rays, which create two peaks on the graph for each elementHere, the beta of Copper overlaps with the alpha of Zinc, making the peaks blend together, resulting in the dominant presence of Copper and Zinc
Y-axis units are “Counts”“Counts” keep track of the number of times the detector absorbed a particular element’s X-rayX-axis units are “KeV”, which is a unit of energyEach element is identified by the energy of the X-ray it emitsX-rays are divided into K-alpha rays and K-beta rays, which create two peaks on the graph for each elementHere, the beta of Copper overlaps with the alpha of Zinc, making the peaks blend together, resulting in the dominant presence of Copper and Zinc
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BasilicaBasilica
The Basilica has, in descending order: IronStrontiumCopperTitanium
The Basilica has, in descending order: IronStrontiumCopperTitanium
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Roman CoinRoman Coin
The alpha and beta peaks overlap on this graph, however, Silver, Copper, and Manganese are the main elements present
The alpha and beta peaks overlap on this graph, however, Silver, Copper, and Manganese are the main elements present
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Fool’s GoldFool’s Gold
On the left you can clearly see the alpha and beta peaks of Sulfur and on the right is Iron.
On the left you can clearly see the alpha and beta peaks of Sulfur and on the right is Iron.
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ConclusionConclusionWe found the process relatively easy to learn, understand, and usePIXE is useful for determining the elemental composition of various artifacts and historical documentsWe found that items we thought contained different elements actually contained a lot of the same elements.The most common elements we found were Iron and StrontiumIt quickly became apparent that PIXE is easy and beneficial to the scientific community
We found the process relatively easy to learn, understand, and usePIXE is useful for determining the elemental composition of various artifacts and historical documentsWe found that items we thought contained different elements actually contained a lot of the same elements.The most common elements we found were Iron and StrontiumIt quickly became apparent that PIXE is easy and beneficial to the scientific community