Precise 210Pb determination with high-efficiency gamma spectrometry for dating of marine sedimentary cores
[EN]In order to establish the chronology of deep-sea sediments from high-resolution 210Pb-dating, the determination of 210Pb and 226Ra activity concentrations needs to be improved. Gamma spectrometry allows determining simultaneously both radionuclides. However, spectrum background is still an issue...
| Autores: | , , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2020 |
| País: | España |
| Institución: | Universidad de Salamanca (USAL) |
| Repositorio: | GREDOS. Repositorio Institucional de la Universidad de Salamanca |
| OAI Identifier: | oai:gredos.usal.es:10366/146014 |
| Acceso en línea: | http://hdl.handle.net/10366/146014 |
| Access Level: | acceso abierto |
| Palabra clave: | Pb-dating Gamma spectrometry HPGe detector Spectrometry, Gamma 2202.05 Rayos Gamma 251090-1 Geología Marina. Dinámica Sedimentaria espectrometría gamma |
| Sumario: | [EN]In order to establish the chronology of deep-sea sediments from high-resolution 210Pb-dating, the determination of 210Pb and 226Ra activity concentrations needs to be improved. Gamma spectrometry allows determining simultaneously both radionuclides. However, spectrum background is still an issue to obtain high sensitivity. Four deep-sea sediment cores were dated using Mazinger, a gamma spectrometer with high-efficiency and very low-background, and the Constant Rate and Supply model was applied to obtain recent ages |
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