Energy-Dispersive XRF (ED-XRF)
Definition
An XRF configuration using a solid-state detector that registers all emitted photon energies simultaneously. Faster and more compact than WD-XRF, enabling portable instruments, but with somewhat lower resolution.
- Detector type
- Solid-state
- Advantage
- Fast, compact, portable
- Trade-off
- Lower resolution than WD-XRF
Common questions
Why is ED-XRF favoured for field or portable forensic use?+
Its compact solid-state detector collects all emitted energies at once, which allows handheld instruments that can screen evidence such as glass, gunshot residue, or questioned metals directly at the scene.
What is the main trade-off against WD-XRF?+
ED-XRF trades some peak resolution and sensitivity to trace or overlapping elements for speed and portability, so WD-XRF remains preferred in a laboratory setting when maximum elemental resolution is needed.
Related terms
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- Pressed Pellet
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- Wavelength-Dispersive XRF (WD-XRF)
- An XRF configuration that uses an analysing crystal to separate emitted X-rays by wavelength before detection, giving high spectral resolution and low...
- X-Ray Fluorescence (XRF)
- A technique in which a sample is irradiated with a primary X-ray beam, causing its constituent elements to emit characteristic secondary (fluorescent)...