Romain Coulon, C Michotte, S Courte, Manuel Nonis, Tomasz Ziemek, J. Marganiec, Edyta Lech, Paweł Saganowski, Marek Czudek, A. Listkowska,
Main text Since 2019, 2 laboratories have submitted 2 samples of 225 Ac 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.Ac-225. Recently, the POLATOM (Poland) participated in the comparison and a key comparison reference value (KCRV) has been calculated. For the first time, the degrees of equivalence between each equivalent activity measured in the SIR have been calculated and the results ...
Tópico(s): Radioactivity and Radon Measurements
2022 - IOP Publishing | Metrologia
Romain Coulon, C Michotte, S 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, M. Capogni, P. De Felice, Mauro Capone, P. Carconi, A. 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 Fitzgerald, Lizbeth Laureano-Pérez, L. Pibida, Milton W Van Rooy, Joline Lubbe, Martin J van Staden, R. C. Shearman, J D Keightley, Andy Pearce, Natasha Ramirez, Emma Bendall, Sean P. Collins, Tomasz Ziemek, Edyta Lech, Paweł Saganowski, Marek Czudek, A. Listkowska, O. Nähle, Karsten Kossert, M. P. Takács, Matej Krivošík, Ivana Bonková,
Main text Since 1976, 30 laboratories have submitted 85 samples of 60 Co 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. Recently, the PTB (Germany), the NIST (United States), the SMU (Slovakia), the BARC (India), the LNE-LNHB (France), the POLATOM (Poland), the ENEA-INMRI (Italy), the NPL (United Kingdom), the LNMRI-IRD (Brazil), the NMISA (South Africa) and the ANSTO (Australia) participated ...
Tópico(s): Radioactivity and Radon Measurements
2023 - IOP Publishing | Metrologia
R. Broda, Tomasz Ziemek, Ch Bobin, C Thiam, A. Listkowska, Edyta Lech, L. Chambon, Valérie Lourenço, Marek Czudek, Paweł Saganowski, Z. Tymiński, Ewa Kołakowska,
Main text A bilateral comparison between LNE-LNHB, France and the RC POLATOM, Poland on activity measurements of the 51Cr solution was organized in 2022 as the EURAMET project No 1554 and registered as EURAMET.RI(II)-K2.Cr-51 key comparison. In both laboratories, primary activity measurements techniques based on 4π(LS)-γ coincidence and anti-coincidence counting methods were used. LNE-LNHB also performed indicative measurements in a large-well NaI(Tl) detector using the 4πγ method. The final result ...
Tópico(s): Radioactive contamination and transfer
2023 - IOP Publishing | Metrologia
J. Marganiec, Tomasz Ziemek, R. Broda, Daniel Cacko, Marek Czudek, A. Jęczmieniowski, Ewa Kołakowska, Edyta Lech, A. Listkowska, Paweł Saganowski, Z. Tymiński,
Tópico(s): Radioactivity and Radon Measurements
2022 - Springer Science+Business Media | Journal of Radioanalytical and Nuclear Chemistry
J. Marganiec, Marek Czudek, Edyta Lech, A. Listkowska, Paweł Saganowski, Z. Tymiński, Tomasz Ziemek,
The activity of the 177Lu solution has been measured by means of the CIEMAT/NIST efficiency tracing method. This result has been compared to the previous obtained results received from 4πβ(LS)-γ coincidence and anticoincidence counting. The activities determined with various methods have been found to be consistent. The decay curve of the 177Lu solution has been followed in the TDCR counter to determine the half-life of this isotope. The half-life has been separately determined for double and triple ...
Tópico(s): Radioactivity and Radon Measurements
2023 - Elsevier BV | Applied Radiation and Isotopes
Produção Nacional
Revisado por pares
Romain Coulon, Monica Aguiar Leobino da Silva, Emma Bendall, Denis E. Bergeron, Christophe Bobin, Ivana Bonková, Angus H.H. Bowan, Broda Ryszard, M. Capogni, Mauro Capone, P. Carconi, P. Cassette, T. Cessna Jeffrey, Emily L. Clark, S.M. Collins, S Courte, Marek Czudek, Carlos José da Silva, Johnny de Almeida Rangel, P. De Felice, Fuyou Fan, A. Fazio, Ryan Fitzgerald, C Fréchou, R. Galea, Vincent Gressier, Akira Iwahara, Steven Judge, Christine M.B. Keevers, J D Keightley, Karsten Kossert, Matej Krivošík, D.B. Kulkarni, Lizbeth Laureano-Pérez, Edyta Lech, Anderson Leiras, Juncheng Liang, Paulo Alberto Lima da Cruz, Ronaldo Lins da Silva, A. Listkowska, Haoran Liu, Meiling Liu, Joline Lubbe, C Michotte, Kimberly Moore, O. Nähle, Manuel Nonis, Andy Pearce, L. Pibida, André Luiz Lopes Quadros, Natasha Ramirez, Anuradha Ravindra, Benoît Sabot, Paweł Saganowski, V. Sathian, M. L. Smith, Ritu Sharma, M. P. Takács, M.W. van Rooy, R. C. Shearman, Martin J. van Staden, W.M. van Wyngaardt, Zhijie Yang, Melek Zarifi, Ming Zhang, Tomasz Ziemek,
The Bureau International des Poids et Mesures (BIPM) is developing a new transfer instrument to extend its centralized services for assessing the international equivalence of radioactive standards to new radionuclides. A liquid scintillation counter using the triple/double coincidence ratio method is being studied and tested in the CCRI(II)-P1.Co-60 pilot study. The pilot study, involving 13 participating laboratories with primary calibration capabilities, validated the approach against the original ...
Tópico(s): Scientific Measurement and Uncertainty Evaluation
2023 - Elsevier BV | Applied Radiation and Isotopes
R. Broda, Tomasz Ziemek, J. Marganiec, Marek Czudek, Karsten Kossert, A. Listkowska, Edyta Lech, Z. Tymiński, Paweł Saganowski, Romain Coulon, C Michotte,
A method for absolute measurements of the 225Ac activity in equilibrium with its progeny was developed. Measurements were performed using the triple-to-double coincidence ratio (TDCR) method in two different TDCR counters. The activity concentration of an 225Ac solution was determined and the solution was sent to the SIR system for a comparison. The half-life of 225Ac was determined by one of the TDCR counters and found to be 9.9150(63) days.
Tópico(s): Scientific Measurement and Uncertainty Evaluation
2023 - Elsevier BV | Applied Radiation and Isotopes