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On the accuracy of total-IBA
- Publication Year :
- 2020
-
Abstract
- “Total-IBA” implies the synergistic use of multiple IBA techniques. It has been claimed that Total–IBA inherits the accuracy of the most accurate IBA technique used. A specific example is now given of this where (in vacuo) EBS/PIXE of a glass sample uniform in depth is validated against absolutely calibrated EPMA of the same sample. The EPMA results had a mass closure gap of 2.0 ± 0.6 wt%; the full PIXE analysis determined the composition of this missing 2 wt%. The PIXE calibration was against a single certified glass sample, with uncertainties per line ~10%. Benchmarking also demonstrates ~10% underestimation of the Si scattering cross-section at proton energies ~3 MeV. But the Total-IBA determination of the silica content had a low standard uncertainty of about 2%. This is due to the strong constraints of both the chemical prior and also the mass closure properties of the EBS. Irradiation-induced sodium migration in this soda-lime glass is explored.
- Subjects :
- Nuclear and High Energy Physics
Ion beam analysis
Materials science
Proton
Scattering
010401 analytical chemistry
Mass closure
Analytical chemistry
Electron microprobe
Particle-induced X-ray emission
010402 general chemistry
01 natural sciences
0104 chemical sciences
Calibration
Standard uncertainty
Instrumentation
QC
Subjects
Details
- Language :
- English
- ISSN :
- 0168583X
- Database :
- OpenAIRE
- Accession number :
- edsair.doi.dedup.....5fb7d16ac62ea409fb07a63fa1409520