On decay constants and orbital distance to the Sun. Part I: alpha decay
- Pomm\ue9, S.
- Stroh, H.
- Paepen, J.
- Van Ammel, R.
- Marouli, M.
- Altzitzoglou, T.
- Hult, M.
- Kossert, K.
- N\ue4hle, O.
- Schrader, H.
- Juget, F.
- Bailat, C.
- Nedjadi, Y.
- Bochud, F.
- Buchillier, T.
- Michotte, C.
- Courte, S.
- Van Rooy, M. W.
- Van Staden, M. J.
- Lubbe, J.
- Simpson, B. R. S.
- Fazio, A.
- De Felice, P.
- Jackson, T. W.
- Van Wyngaardt, W. M.
- Reinhard, M. I.
- Golya, J.
- Bourke, S.
- Roy, T.
- Galea, R.
- Keightley, J. D.
- Ferreira, K. M.
- Collins, S. M.
- Ceccatelli, A.
- Verheyen, L.
- Bruggeman, M.
- Vodenik, B.
- Korun, M.
- Chist\ue9, V.
- Amiot, M.-N.
DOIAbstract
Claims that proximity to the Sun causes variation of decay constants at permille level have been investigated for alpha decaying nuclides. Repeated decay rate measurements of 209Po, 226Ra, 228Th, 230U, and 241Am sources were performed over periods of 200 d up to two decades at various nuclear metrology institutes around the globe. Residuals from the exponential decay curves were inspected for annual oscillations. 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. The most stable activity measurements of \u3b1 decaying sources set an upper limit between 0.0006% and 0.006% to the ampli...
Add to ORKG