Comparison and improvement of sediment chronology models using 210Pb and other natural and artificial radioisotopes
- Perez Mayo, Manuel
Publication date
January 2022
DOI Publisher
Fachbereich 01: Physik/Elektrotechnik (FB 01)Abstract
The present work deals with the problems presented in the gamma spectroscopy when it is used as method to quantify the activity concentration of natural and man-made radionuclides in sediment samples and its use to determine the age of depth profiles. In the frame of this thesis, four sediment cores corresponding to three projects have been measured, modeled and interpreted using sediment models based on unsupported lead. Measurements of radionuclides with low energy emission (<100keV) as 210Pb or 241Am via gamma spectrometry used for sediment dating present the problem of self-absorption within the bulk material. It supposes a challenge because eficiency calibrations need to be customized from sample to sample to avoid this probl...
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