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:
“How can you tell if you discipline effectively? Ask yourself if your disciplinary methods generally produce lasting results in a manner you find acceptable. Whether your philosophy is democratic or autocratic, whatever techniques you use—reasoning, a “star” chart, time-outs, or spanking—if it doesn’t work, it’s not effective.”
—Stanley Turecki (20th century)
“The world is not dialectical—it is sworn to extremes, not to equilibrium, sworn to radical antagonism, not to reconciliation or synthesis. This is also the principle of evil.”
—Jean Baudrillard (b. 1929)