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Liquid scintillation counting: A valuable tool to determine half-lives

Autor: Karsten Kossert, Marcell Péter Takács, Ole Nähle

Publikováno v: EPJ Web of Conferences. 284:02002

In the past two decades, the radionuclide metrology group at PTB has carried out a number of half-life determinations using liquid scintillation counting. The half-lives, which were often determined in collaboration with other institutions, range fro

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::81a20a98ceadf4dd668c84640e19f37a
https://doi.org/10.1051/epjconf/202328402002

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Update of the BIPM comparison BIPM.RI(II)-K1.Co-60 of activity measurements of the radionuclide 60Co to include the 2020 result of the PTB (Germany), the 2020 result of the NIST (United States), the 2020 result of the SMU (Slovakia), the 2021 result of the BARC (India), the 2021 result of the LNE-LNHB (France), the 2021 result of the POLATOM (Poland), the 2021 result of the ENEA-INMRI (Italy), the 2021 result of the NPL (United Kingdom), the 2021 result of the LNMRI-IRD (Brazil), the 2022 result of the NMISA (South Africa) and the 2022 result of the ANSTO (Australia)

Autor: Romain Coulon, Carine Michotte, Sammy Courte, Manuel Nonis, W M van Wyngaardt, Michael L Smith, Angus H H Bowan, Christine M B Keevers, Emily L Clark, Melek Zarifi, Anuradha Ravindra, D B Kulkarni, Ritu Sharma, Marco Capogni, Pierino De Felice, Mauro Capone, Pierluigi Carconi, Aldo Fazio, Christophe Bobin, Paulo A Lima da Cruz, Carlos J da Silva, Ronaldo Lins da Silva, Anderson Leiras, Johnny de Almeida Rangel, Monica Aguiar Leobino da Silva, Akira Iwahara, Denis E Bergeron, Jeffrey T Cessna, Ryan P Fitzgerald, Lizbeth Laureano-Perez, Leticia Pibida, Milton W Van Rooy, Joline Lubbe, Martin J van Staden, Robert Shearman, John Keightley, Andy Pearce, Natasha Ramirez, Emma Bendall, Sean Collins, Tomasz Ziemek, Edyta Lech, Pawel Saganowski, Marek Czudek, Anna Listkowska, Ole Nähle, Karsten Kossert, Marcell P Takács, Matej Krivošík, Ivana Bonková

Publikováno v: Metrologia. 60:06010

Main text Since 1976, 30 laboratories have submitted 85 samples of 60Co to the International Reference System (SIR) for activity comparison at the Bureau International des Poids et Mesures (BIPM), with comparison identifier BIPM.RI(II)- K1.Co-60. Rec

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::47dbe3571ede0959a779a3e8a1d02a6c
https://doi.org/10.1088/0026-1394/60/1a/06010

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Improved Source/Absorber Preparation for Radionuclide Spectrometry Based on Low-Temperature Calorimetric Detectors

Autor: Ole Nähle, Jörn Beyer, Karsten Kossert, M. Paulsen, L. Bockhorn, Martin Loidl, P. C.-O. Ranitzsch, Matias Rodrigues

Publikováno v: Journal of Low Temperature Physics. 199:298-305

High-resolution beta spectrometry based on low-temperature calorimetric detectors requires high-quality source/absorber combinations in order to avoid spectrum artifacts and to achieve optimal detection efficiency. In this work, preparation technique

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a3f3a243440f64a48b0b654eedf42775
https://doi.org/10.1007/s10909-019-02274-8

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Determination of the activity and half-life of 227Th

Autor: Karsten Kossert, Ole Nähle

Publikováno v: Applied Radiation and Isotopes. 145:12-18

Liquid scintillation samples with 227Th were prepared a few hours after the separation of the progeny. During the measurements, 227Th and its daughters are not in radioactive equilibrium. The counting efficiencies of the individual radionuclides of t

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::169f5fbdfb525331f87cd4fd36f82ce6
https://doi.org/10.1016/j.apradiso.2018.12.010

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A reply to the rebuttal by Sturrock et al

Autor: S. Pommé, Karsten Kossert, Guillaume Lutter, Ole Nähle, M. Marouli

Publikováno v: Astroparticle Physics. 107:22-25

Sturrock et al. have published a “rebuttal” to a paper by Pomme et al. who refuted their claim that variations in a radon decay experiment at the Geological Survey of Israel (GSI) can be associated with solar rotation. Sturrock et al. misinterpre

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::71227cafb8055343032abf2142134a81
https://doi.org/10.1016/j.astropartphys.2018.11.005

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Results of the CCRI(II)-K2. H-3 key comparison 2018: Measurement of the activity concentration of a tritiated-water source

Autor: P. De Felice, C Dutsov, Ole Nähle, Philippe Cassette, K Mitev, Eduardo García-Toraño, Youcef Nedjadi, T. Ziemek, Marcell P. Takács, Raphael Galea, A Arinc, P Oropesa Verdecia, Karsten Kossert, Marco Capogni, Juncheng Liang

Publikováno v: Metrologia
Metrologia, 2020, 57 (1A), pp.06004. ⟨10.1088/0026-1394/57/1A/06004⟩

A comparison of the activity concentration measurement of a 3H2O solution was organized by the LNE-LNHB under the auspices of the CCRI(II). The solution was sent to thirteen laboratories and eleven measurement reports were received. The results, as w

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::955c7a270a3f8045b24e2bfdaaf63439
https://iopscience.iop.org/article/10.1088/0026-1394/57/1A/06004

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Activity determination of 68Ge/68Ga by means of 4πβ(Č)-γ coincidence counting

Autor: Justyna Marganiec-Gałązka, Ole Nähle, Karsten Kossert

Publikováno v: Applied Radiation and Isotopes. 134:240-244

Germanium-68 is an important radionuclide since it is used to generate its daughter 68Ga which is frequently used for positron emission tomography (PET). In addition, 68Ge/68Ga sources are often used as surrogates for short-lived PET isotopes when ca

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9a2500382c5ce9a7a42e23b10eea6959
https://doi.org/10.1016/j.apradiso.2017.06.027

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Activity determination of 67 Ga using 4πβ‒γ coincidence counting

Autor: Ole Nähle

Publikováno v: Applied Radiation and Isotopes. 134:286-289

The activity of a 67Ga solution was measured by means of the 4πβ-γ coincidence counting technique. A setup with a proportional counter and non-extending dead-time modules in the two detector channels was used. The influence of the delayed state af

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b8fc6fc7a8c50dd60b27caf25b801220
https://doi.org/10.1016/j.apradiso.2017.09.006

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Activity determination of 60 Co and the importance of its beta spectrum

Autor: Ole Nähle, Karsten Kossert, Justyna Marganiec-Gałązka, Xavier Mougeot

Publikováno v: Applied Radiation and Isotopes
Applied Radiation and Isotopes, 2018, 134 (SI), pp.212-218. ⟨10.1016/j.apradiso.2017.06.015⟩
Applied Radiation and Isotopes, Elsevier, 2018, 134 (SI), pp.212-218. ⟨10.1016/j.apradiso.2017.06.015⟩

21st International Conference on Radionuclide Metrology and its Applications (ICRM), Argentinian Comis Nacl Energia Atomica, Buenos Aires, ARGENTINA, MAY 15-19, 2017. Organizer: Argentinian Comision Nacional Energia Atomica; International audience; T

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::86949d8724483eac15078dd7567dda33
https://doi.org/10.1016/j.apradiso.2017.06.015

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