Radioactive sample effects on EDXRF spectra
Energy dispersive X-ray fluorescence (EDXRF) is a rapid, straightforward method to determine sample elemental composition. A spectrum can be collected in a few minutes or less, and elemental content can be determined easily if there is adequate energy resolution. Radioactive alpha emitters, however, emit X-rays during the alpha decay process that complicate spectral interpretation. This is particularly noticeable when using a portable instrument where the detector is located in close proximity to the instrument analysis window held against the sample. A portable EDXRF instrument was used to collect spectra from specimens containing plutonium-239 (a moderate alpha emitter) and americium-241 (a heavy alpha emitter). These specimens were then analyzed with a wavelength dispersive XRF (WDXRF) instrument to demonstrate the differences to which sample radiation-induced X-ray emission affects the detectors on these two types of XRF instruments.
- Publication Date:
- OSTI Identifier:
- Report Number(s):
- LA-UR-08-05480; LA-UR-08-5480
- DOE Contract Number:
- Resource Type:
- Journal Article
- Research Org:
- Los Alamos National Laboratory (LANL)
- Sponsoring Org:
- Country of Publication:
- United States
- 37; ALPHA DECAY; AMERICIUM 241; EMISSION; ENERGY RESOLUTION; FLUORESCENCE; PLUTONIUM 239; SPECTRA; WAVELENGTHS; X-RAY FLUORESCENCE ANALYSIS
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