Details

Autor(en) / Beteiligte

• Hult, Mikael
• Charette, Matthew
• Lutter, Guillaume
• Marissens, Gerd
• Henderson, Paul
• Sobiech-Matura, Katarzyna
• Simgen, Hardy

Titel

Underground gamma-ray measurements of radium isotopes from hydrothermal plumes in the deep Pacific Ocean

Ist Teil von

• Applied radiation and isotopes, 2019-11, Vol.153, p.108831-108831, Article 108831

Ort / Verlag

England: Elsevier Ltd

Erscheinungsjahr

2019

Quelle

Elsevier ScienceDirect Journals

Beschreibungen/Notizen

• The radium isotopes 226Ra and 228Ra can provide important data on the dynamics of deep-sea hydrothermal plumes that travel the oceans for decades and have great impact on the ocean chemistry. This study focuses on parameters important for obtaining low detection limits for 228Ra using gamma-ray spectrometry. It is present at mBq-levels in samples collected during the US GEOTRACES 2013 cruise to the Southeast Pacific Ocean. •Metrology of detecting 226Ra and 228Ra in samples from hydrothermal plumes.•Optimisation of parameters to detect low-levels of 228Ra using γ-ray spectrometry.•Detection limits of 1.5 mBq was achieved using 1-week measurement underground.•Radon emanation was only 0.5%.•Radiopurity of all materials involved were investigated.