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Gamma spectrum stabilization method based on nonlinear least squares optimization
- Source :
- Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine. 169
- Publication Year :
- 2020
-
Abstract
- To suppress spectral drift in lengthy gamma spectrum measurements, a convenient and practical spectrum stabilization method with software-only adjustment is studied. The gamma energy spectra are recorded in consecutive small time intervals. The drifts in different time intervals relative to the first reference spectrum are estimated with a full spectrum nonlinear optimization technique, and the drifted spectra are corrected and accumulated to form a drift-free spectrum. This method needs neither hardware adjustment such as high voltage or electronics gain, nor peak location. Presented experimental results show that the stabilization accuracy can be significantly improved using this approach.
- Subjects :
- Physics
Radiation
Nonlinear least squares optimization
Spectrum (functional analysis)
High voltage
010403 inorganic & nuclear chemistry
01 natural sciences
Spectral line
030218 nuclear medicine & medical imaging
0104 chemical sciences
Computational physics
Nonlinear programming
03 medical and health sciences
0302 clinical medicine
Stabilization methods
Electronics
Gamma energy
Subjects
Details
- ISSN :
- 18729800
- Volume :
- 169
- Database :
- OpenAIRE
- Journal :
- Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine
- Accession number :
- edsair.doi.dedup.....b76f77482b49fc1c4366e99982c11703