Blar i Øvrige samlinger på tidsskrift "Radiocarbon: An International Journal of Cosmogenic Isotope Research"
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Findings from an in-Depth Annual Tree-Ring Radiocarbon Intercomparison
(Peer reviewed; Journal article, 2020)The radiocarbon (14C) calibration curve so far contains annually resolved data only for a short period of time. With accelerator mass spectrometry (AMS) matching the precision of decay counting, it is now possible to ... -
Gas Ion Source Performance of the EnvironMICADAS at HEKAL Laboratory, Debrecen, Hungary
(Journal article; Peer reviewed, 2021)A coupled accelerator mass spectrometer–gas interface system has been successfully operating at the Hertelendi Laboratory of Environmental Studies, Debrecen, Hungary, since 2013. Over the last 6 years more than 500 gas ... -
HESSEL de VRIES: RADIOCARBON PIONEER from GRONINGEN
(Journal article; Peer reviewed, 2021)Hessel de Vries contributed to radiocarbon (14C) dating for only one short decade. Yet, his development of proportional CO2 counting greatly facilitated 14C measurements, improved their reproducibility, and lowered both ... -
Radiocarbon calibration around AD 1900 from Scots pine (Pinus sylvestris) tree rings from northern Norway
(Journal article; Peer reviewed, 2019)To resolve an inconsistency around AD 1895 between radiocarbon (14C) measurements on oak from the British Isles and Douglas fir and Sitka spruce from the Pacific Northwest, USA, we measured the 14C content in single-year ... -
The Radiocarbon Sample Archive of Trondheim
(Peer reviewed; Journal article, 2023)Atmospheric CO2 samples have been collected by the Trondheim Radiocarbon Laboratory since the 1960s. The remaining material from the measurements has been precipitated as CaCO3 and stored in glass containers. We investigated ... -
RADIOCARBON STEP-COMBUSTION OXIDATION METHOD and FTIR ANALYSIS of TRONDHEIM CaCO<inf>3</inf>PRECIPITATES of ATMOSPHERIC CO<inf>2</inf>SAMPLES: FURTHER INVESTIGATIONS and INSIGHTS
(Journal article; Peer reviewed, 2023)Eight atmospheric carbon dioxide samples (as calcium carbonate—CaCO3—precipitates) from Lindesnes site (58ºN, 7ºE), belonging to 1963 and 1980 (four samples from each year) and stored at the National Laboratory for Age ... -
Squeaky Clean Cellulose: Comparing Pretreatment Effectiveness on Single Tree Rings and Wooden Laths
(Peer reviewed; Journal article, 2024)Obtaining accurate radiocarbon (14C) results from wood samples requires the extraction of cellulose. In the past, this has been done using different combinations of methods including acidified bleaching, acid-base-acid, ... -
Status Report of the Trondheim Radiocarbon Laboratory
(Journal article; Peer reviewed, 2019)The Trondheim radiocarbon (14C) laboratory has evolved from a traditional radiocarbon decay counting laboratory to an accelerator mass spectrometry (AMS) facility primarily measuring 14C. This evolution required adjustments ... -
The 1953-1965 rise in atmospheric bomb 14C in central Norway
(Journal article; Peer reviewed, 2019)Sub-annual measurements, eight increments per year, of cellulose in a Scots pine tree growing in central Norway are presented as a proxy for tropospheric 14CO2 at biweekly to monthly resolution. The results are validated ... -
Unravelling the history of a venetian antiphonary
(Journal article; Peer reviewed, 2023)We present the results of a multifaceted study of an antiphonary—liturgical song book—presumably made in Venice in 1607, now in the Ringve, National Music Museum of Norway in Trondheim1. The book is hand-sewn on raised ...