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单词 X-ray fluorescence
释义
X-ray fluorescence
Physics

  • The emission of X-rays from excited atoms produced by the impact of high-energy electrons, other particles, or a primary beam of other X-rays. The wavelengths of the fluorescent X-rays can be measured by an X-ray spectrometer as a means of chemical analysis. X-ray fluorescence is used in such techniques as electron probe microanalysis.

Chemistry

  • The emission of X-rays from excited atoms produced by the impact of high-energy electrons, other particles, or a primary beam of other X-rays. The wavelengths of the fluorescent X-rays can be measured by an X-ray spectrometer as a means of chemical analysis. X-ray fluorescence is used in such techniques as electron-probe microanalysis.

Chemical Engineering

  • The emission of X-rays from excited atoms that are produced by the impact of high-energy electrons, or other particles, or a primary beam of other X-rays. The wavelengths of the fluorescence X-rays can be measured by an X-ray spectrometer as a means of chemical analysis.

Electronics and Electrical Engineering

  • See electron microprobe.

Geology and Earth Sciences

  • The secondary X-ray emission that results when electrons from the outer orbitals of an atom fill vacant inner orbital positions originally created by X- or gamma-ray excitation. These X-rays are characteristic of excited atoms.
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