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On-belt analysis of minerals using naturally occurring gamma radiation
- Source :
- ICASSP, University of Western Australia
- Publication Year :
- 2008
- Publisher :
- IEEE, 2008.
-
Abstract
- We describe a method to analyze materials on a conveyor belt using natural gamma spectra collected with a BGO (bismuth germanate) gamma ray detector, which collects emissions from potassium (K), uranium (U), and thorium (Th) in the materials. A statistical model is proposed based on a Poisson process and an approximate maximum likelihood (ML) technique via the expectation-maximization (EM) algorithm is then used to estimate the amount of each of the three elements in the material. A refinement of the statistical model is used to estimate linear drift in the detector.
Details
- ISSN :
- 15206149
- Database :
- OpenAIRE
- Journal :
- 2008 IEEE International Conference on Acoustics, Speech and Signal Processing
- Accession number :
- edsair.doi.dedup.....5d54727bd0b65dc110abe170686f86de