Explain+XRF+vs.+PIXE

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Explain XRF vs. PIXE The following is a summary which compares the strengths and weaknesses of XRF versus PIXE:

Strengths of XRF XRF is more convenient than PIXE. XRF uses a smaller machine versus an accelerator which takes up multiple rooms. XRF is much less expensive. It is also relatively easier to setup and use. Because PIXE is more accurate, XRF resources are in less demand and more readily available for use. Even though PIXE maybe more accurate, XRF still provides good data and is less dangerous to use. Not as many safety precautions are necessary. In relation to other elemental analysis tools, XRF is none destructive because only electron are affected.

Weaknesses of XRF XRF is susceptible to noise, i.e. background radiation. This is especially true if the detector is not maintained at a cool temperature. XRF is not as precise as PIXE, due to noise. XRF also has a lower upper limit versus PIXE. XRF does not produce enough energy to release the inner shell electrons.

Strengths of PIXE PIXE uses higher energy proton beam which allows PIXE to have a wider range of elements which can detect. PIXE is very precise; it can detect very small, trace amounts of elements in a sample. PIXE does not have much noise. In relation to other elemental analysis tools, like XRF, PIXE is none destructive because only electrons are affected.

Weaknesses of PIXE PIXE is accomplished on a very expensive piece of equipment. It requires many safety precautions because it uses high voltage electricity and uses intense radiation. PIXE is a very popular tool because of its strengths. Due to this demand, it is very hard to get lab time on the PIXE machine.

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