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Creators/Authors contains: "Kontuľ, Ivan"

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  1. ; ; ; ; ; ; (, Journal of Radioanalytical and Nuclear Chemistry)
    Abstract Terrestrial and extraterrestrial radioisotope research has been strongly dependent on the development of analytical methods which would enable to trace radioisotopes at low concentrations in subgram samples (e.g., in tree rings, ice cores, meteorites, etc.). Accelerator mass spectrometry (AMS) has become the most sensitive technique for ultralow-level analysis of long-lived radioisotopes, such as14C,10Be and26Al. We review developments and applications carried out in the CENTA laboratory, and describe a recently installed fully equipped AMS line, designed for analysis of long-lived radioisotopes from tritium to curium. 
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  2. ; ; ; ; ; ; ; ; ; ; et al (, Journal of Radioanalytical and Nuclear Chemistry)
    Abstract The LEGEND collaboration has been developing a76Ge-based double-beta decay experimental program where precise radiopurity measurements of ultraclean materials are crucial. Ultralow concentrations of thorium and uranium, the main contributors to the detector background via their decay products, can be determined by inductively coupled plasma mass spectrometry (ICPMS) and accelerator mass spectrometry (AMS). Here we shall present recent developments in thorium and uranium mass spectrometry methods, together with basics of separation chemistry applied to process different samples. The new possibilities to measure232Th and238U by ICPMS and AMS at the Comenius University in Bratislava are discussed as well. 
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