Other Spectroscopic Methods Using The Same Principle
It is also possible to create a characteristic secondary X-ray emission using other incident radiation to excite the sample:
- electron beam: electron microprobe (or Castaing microprobe);
- ion beam: particle induced X-ray emission (PIXE).
When radiated by an X-ray beam, the sample also emits other radiations that can be used for analysis:
- electrons ejected by the photoelectric effect: X-ray photoelectron spectroscopy (XPS), also called electron spectroscopy for chemical analysis (ESCA)
The de-excitation also ejects Auger electrons, but Auger electron spectroscopy (AES) normally uses an electron beam as the probe.
Confocal microscopy X-ray fluorescence imaging is a newer technique that allow control over depth, in addition to horizontal and vertical aiming, for example, when analysing buried layers in a painting.
Read more about this topic: X-ray Fluorescence
Famous quotes containing the words methods and/or principle:
“I believe in women; and in their right to their own best possibilities in every department of life. I believe that the methods of dress practiced among women are a marked hindrance to the realization of these possibilities, and should be scorned or persuaded out of society.”
—Elizabeth Stuart Phelps (1844–1911)
“The principle of asceticism never was, nor ever can be, consistently pursued by any living creature. Let but one tenth part of the inhabitants of the earth pursue it consistently, and in a day’s time they will have turned it into a Hell.”
—Jeremy Bentham (1748–1832)