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  • 1
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    First Results from the Groningen AMS Facility (1995)
    Cambridge University Press
    Details
    Publication Date: 1995-01-01
    Description: A new generation accelerator mass spectrometer has been installed at the Centre for Isotope Research in Groningen, The Netherlands. It is a dedicated 14C machine, with a capacity of measuring 3000 samples per year with high precision (〈 0.5%). The system has been in full operation since the summer of 1994. We present here a short summary of the results and performance obtained thus far.
    Print ISSN: 0033-8222
    Electronic ISSN: 1945-5755
    Topics: Archaeology , Energy, Environment Protection, Nuclear Power Engineering , Geosciences
    Published by Cambridge University Press
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  • 2
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    A Multiple Proportional 14C Counter System for Milligram-Sized Samples (1983)
    Cambridge University Press
    Details
    Publication Date: 1983-01-01
    Description: A system of 10 proportional 14C counters has been designed. The counters have a volume of 35ml and are operated with CO2 at a pressure of 1 bar and a voltage of 3300V. The amplified signals of the counters are fed through an analog multiplexer to the inputs of three discriminators. The Geiger signal is fed to a separate discriminator. A logic circuit selects from these discriminators the alpha, beta, muon, and purity counts which are then stored in a microcomputer (ITT 2020 with 48K RAM), where the necessary calculations are also performed. The purity of the gas sample is monitored by counting a part of the muon spectrum. The alpha and beta pulses are stored during 95% of the measuring period; the remaining 5% is used for registration of the muon and purity pulses. The overall accuracy of the system for modern carbon samples is 2% after a counting period of 6 days.
    Print ISSN: 0033-8222
    Electronic ISSN: 1945-5755
    Topics: Archaeology , Energy, Environment Protection, Nuclear Power Engineering , Geosciences
    Published by Cambridge University Press
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  • 3
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    Nutrients measured on water bottle samples during TYRO cruise NAPP90-1 (2013)
    PANGAEA
    Details
    Publication Date: 2024-02-01
    Keywords: Alkalinity, total; Bottle number; Carbon-14; Carbon dioxide, total; Coulometric titration (Knap et al., 1996, IOC Manuals and Guides 29, UNESCO); CTD/Rosette; CTD-RO; Date/Time of event; Density, sigma-theta (0); DEPTH, water; Event label; JGOFS; Joint Global Ocean Flux Study; Latitude of event; Longitude of event; NAPP90-1; NAPP90-1_13-2; NAPP90-1_15-1; NAPP90-1_15-4; NAPP90-1_20-1; NAPP90-1_20-11; NAPP90-1_20-14; NAPP90-1_20-17; NAPP90-1_20-19; NAPP90-1_20-22; NAPP90-1_20-29; NAPP90-1_20-3; NAPP90-1_20-31; NAPP90-1_20-9; NAPP90-1_30-12; NAPP90-1_30-3; NAPP90-1_30-5; NAPP90-1_37-1; NAPP90-1_37-2; NAPP90-1_39-1; NAPP90-1_39-2; NAPP90-1_41-2; NAPP90-1_43-1; NAPP90-1_43-2; NAPP90-1_47-2; NAPP90-1_48-1; NAPP90-1_49-1; NAPP90-1_49-4; NAPP90-1_51-10; NAPP90-1_51-16; NAPP90-1_51-20; NAPP90-1_51-26; NAPP90-1_51-28; NAPP90-1_51-36; NAPP90-1_51-8; NAPP90-1_51-9; NAPP90-1_53-1; NAPP90-1_57-1; NAPP90-1_64-2; NAPP90-1_66-1; NAPP90-1_66-2; NAPP90-1_68-1; NAPP90-1_69-8; NAPP90-1_71-1; NAPP90-1_72-1; NAPP90-1_81-1; NAPP90-1_81-11; NAPP90-1_81-19; NAPP90-1_81-23; NAPP90-1_81-33; NAPP90-1_81-41; NAPP90-1_81-9; Nitrate; Oxygen; Phosphate; Salinity; Silicate; Temperature, water; Temperature, water, potential; Titration; Tyro; δ13C, dissolved inorganic carbon
    Type: Dataset
    Format: text/tab-separated-values, 8044 data points
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