In XRF analysis, what is produced when the sample is bombarded by X-rays?

Prepare for the NRCan XRF Analyzer Operator Certification Level 1 Exam. Utilize flashcards and multiple-choice questions with detailed hints and explanations. Ready yourself for a successful examination!

Multiple Choice

In XRF analysis, what is produced when the sample is bombarded by X-rays?

When X-rays hit a sample in XRF, several interactions occur that produce a mix of radiation and particles. The atoms can eject inner-shell electrons (photoelectric effect), and as the atom relaxes, it emits characteristic X-rays that reveal the elements present. The ejected electrons and other secondary processes also generate Bremsstrahlung, a continuous X-ray spectrum as electrons decelerate in the material. Scattering of photons and electrons adds backscattered X-rays, which travel toward the detector. So the overall output is a shower of electrons, Bremsstrahlung X-rays, and characteristic X-rays, including backscattered X-rays. This combination explains both the characteristic peaks used for analysis and the background radiation seen in XRF spectra.

When X-rays hit a sample in XRF, several interactions occur that produce a mix of radiation and particles. The atoms can eject inner-shell electrons (photoelectric effect), and as the atom relaxes, it emits characteristic X-rays that reveal the elements present. The ejected electrons and other secondary processes also generate Bremsstrahlung, a continuous X-ray spectrum as electrons decelerate in the material. Scattering of photons and electrons adds backscattered X-rays, which travel toward the detector. So the overall output is a shower of electrons, Bremsstrahlung X-rays, and characteristic X-rays, including backscattered X-rays. This combination explains both the characteristic peaks used for analysis and the background radiation seen in XRF spectra.

More practice questions