NSR Query Results
Output year order : Descending NSR database version of April 27, 2024. Search: Author = M.J.van Staden Found 5 matches. 2020VA03 Appl.Radiat.Isot. 160, 109070 (2020) M.W.van Rooy, M.J.van Staden, B.R.S.Simpson, J.Lubbe Activity determination of 18F using liquid scintillation beta-efficiency extrapolation and non-extrapolation methods RADIOACTIVITY 18F(EC), (β+); measured decay products, Eβ, Iβ, Eγ, Iγ; deduced the absolute activity.
doi: 10.1016/j.apradiso.2020.109070
2017PO15 Metrologia 54, 19 (2017) S.Pomme, H.Stroh, J.Paepen, R.Van Ammel, M.Marouli, T.Altzitzoglou, M.Hult, K.Kossert, O.Nahle, H.Schrader, F.Juget, C.Bailat, Y.Nedjadi, F.Bochud, T.Buchillier, C.Michotte, S.Courte, M.W.van Rooy, M.J.van Staden, J.Lubbe, B.R.S.Simpson, A.Fazio, P.De Felice, T.W.Jackson, W.M.Van Wyngaardt, M.I.Reinhard, J.Golya, S.Bourke, T.Roy, R.Galea, J.D.Keightley, K.M.Ferreira, S.M.Collins, A.Ceccatelli, L.Verheyen, M.Bruggeman, B.Vodenik, M.Korun, V.Chiste, M.-N.Amiot On decay constants and orbital distance to the Sun-part II: beta minus decay RADIOACTIVITY 3H, 14C, 60Co, 85Kr, 90Sr, 124Sb, 134,137Cs, 154Eu(β-); analyzed available data from radionuclide metrology laboratories, residuals from the exponential decay curves for annual oscillations; deduced systematic deviations from a purely exponential decay curve differ in amplitude and phase from one data set to another and appear attributable to instabilities in the instrumentation and measurement conditions, oscillations in phase with Earth's orbital distance to the Sun could not be observed, no apparent indications for systematic oscillations at a level of weeks or months.
doi: 10.1088/1681-7575/54/1/19
2017PO16 Metrologia 54, 1 (2017) S.Pomme, H.Stroh, J.Paepen, R.Van Ammel, M.Marouli, T.Altzitzoglou, M.Hult, K.Kossert, O.Nahle, H.Schrader, F.Juget, C.Bailat, Y.Nedjadi, F.Bochud, T.Buchillier, C.Michotte, S.Courte, M.W.van Rooy, M.J.van Staden, J.Lubbe, B.R.S.Simpson, A.Fazio, P.De Felice, T.W.Jackson, W.M.Van Wyngaardt, M.I.Reinhard, J.Golya, S.Bourke, T.Roy, R.Galea, J.D.Keightley, K.M.Ferreira, S.M.Collins, A.Ceccatelli, L.Verheyen, M.Bruggeman, B.Vodenik, M.Korun, V.Chiste, M.-N.Amiot On decay constants and orbital distance to the Sun-part I: alpha decay RADIOACTIVITY 209Po, 226Ra, 228Th, 230U, 241Am(α); analyzeed two decades of data from various nuclear metrology institutes around the globe, residuals from the exponential decay curves for annual oscillations; deduced that systematic deviations from a purely exponential decay curve differ in amplitude and phase from one data set to another are attributable to instabilities in the instrumentation and measurement conditions, lack of apparent indications for systematic oscillations at a level of weeks or months.
doi: 10.1088/1681-7575/54/1/1
2017PO17 Metrologia 54, 36 (2017) S.Pomme, H.Stroh, J.Paepen, R.Van Ammel, M.Marouli, T.Altzitzoglou, M.Hult, K.Kossert, O.Nahle, H.Schrader, F.Juget, C.Bailat, Y.Nedjadi, F.Bochud, T.Buchillier, C.Michotte, S.Courte, M.W.van Rooy, M.J.van Staden, J.Lubbe, B.R.S.Simpson, A.Fazio, P.De Felice, T.W.Jackson, W.M.Van Wyngaardt, M.I.Reinhard, J.Golya, S.Bourke, T.Roy, R.Galea, J.D.Keightley, K.M.Ferreira, S.M.Collins, A.Ceccatelli, L.Verheyen, M.Bruggeman, B.Vodenik, M.Korun, V.Chiste, M.-N.Amiot On decay constants and orbital distance to the Sun-part III: beta plus and electron capture decay RADIOACTIVITY 22Na, 54Mn, 55Fe, 57Co, 65Zn, 82,85Sr, 109Cd, 133Ba, 152Eu(EC), (β+), 90Sr, 124Sb(β-); analyzed available data on repeated over periods from 200 d up to more than four decades at 14 laboratories across the globe, residuals from the exponential nuclear decay curves for annual oscillations; deduced that systematic deviations from a purely exponential decay curve differ from one data set to another attributable to instabilities in the instrumentation and measurement conditions, oscillations in phase with Earth's orbital distance to the sun could not be observed, lack of apparent indications for systematic oscillations at a level of weeks or months.
doi: 10.1088/1681-7575/54/1/36
2016PO08 Phys.Lett. B 761, 281 (2016) S.Pomme, H.Stroh, J.Paepen, R.Van Ammel, M.Marouli, T.Altzitzoglou, M.Hult, K.Kossert, O.Nahle, H.Schrader, F.Juget, C.Bailat, Y.Nedjadi, F.Bochud, T.Buchillier, C.Michotte, S.Courte, M.W.van Rooy, M.J.van Staden, J.Lubbe, B.R.S.Simpson, A.Fazio, P.De Felice, T.W.Jackson, W.M.Van Wyngaardt, M.I.Reinhard, J.Golya, S.Bourke, T.Roy, R.Galea, J.D.Keightley, K.M.Ferreira, S.M.Collins, A.Ceccatelli, M.Unterweger, R.Fitzgerald, D.E.Bergeron, L.Pibida, L.Verheyen, M.Bruggeman, B.Vodenik, M.Korun, V.Chiste, M.-N.Amiot Evidence against solar influence on nuclear decay constants RADIOACTIVITY 209Po, 226Ra, 228Th, 230U, 241Am(α), 3H, 14C, 60Co, 85Kr, 90Sr, 124Sb, 134,137Cs(β-), 54Mn, 55Fe, 57Co, 82,85Sr, 109Cd, 133Ba(EC), 22Na, 65Zn, 207Bi(EC), (β+), 152Eu(β-), (EC), (β+); measured decay products; deduced decay constant vs. solar activity, exponential nature of nuclear decay.
doi: 10.1016/j.physletb.2016.08.038
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