Buchumschlag

High-resolution measurement of the time-modulated orbital electron capture and of the β+ decay of hydrogen-like 142Pm60+ ions

The periodic time modulations, found recently in the two-body orbital electron capture (EC) decay of both, hydrogen-like 140Pr58+ and 142Pm60+ ions, with periods near to 7 s and amplitudes of about 20%, were re-investigated for the case of 142Pm60+ by using a 245 MHz resonator cavity with a much imp...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: Kienle, Paul (VerfasserIn) , Bosch, F. (VerfasserIn) , Bühler, P. (VerfasserIn) , Faestermann, T. (VerfasserIn) , Litvinov, Yuri A. (VerfasserIn) , Winckler, N. (VerfasserIn) , Sanjari, M. S. (VerfasserIn) , Shubina, Daria (VerfasserIn) , Atanasov, Dinko (VerfasserIn) , Geissel, H. (VerfasserIn) , Ivanova, V. (VerfasserIn) , Yan, X. L. (VerfasserIn) , Boutin, D. (VerfasserIn) , Brandau, C. (VerfasserIn) , Dillmann, I. (VerfasserIn) , Dimopoulou, Ch. (VerfasserIn) , Hess, R. (VerfasserIn) , Hillebrand, P. -M. (VerfasserIn) , Izumikawa, T. (VerfasserIn) , Knöbel, R. (VerfasserIn) , Kurcewicz, J. (VerfasserIn) , Kuzminchuk, N. (VerfasserIn) , Lestinsky, M. (VerfasserIn) , Litvinov, S. A. (VerfasserIn) , Ma, X. W. (VerfasserIn) , Maier, L. (VerfasserIn) , Mazzocco, M. (VerfasserIn) , Mukha, I. (VerfasserIn) , Nociforo, C. (VerfasserIn) , Nolden, F. (VerfasserIn) , Scheidenberger, Ch. (VerfasserIn) , Spillmann, U. (VerfasserIn) , Steck, M. (VerfasserIn) , Stöhlker, Th. (VerfasserIn) , Sun, B. H. (VerfasserIn) , Suzaki, F. (VerfasserIn) , Suzuki, T. (VerfasserIn) , Torilov, S. Yu. (VerfasserIn) , Trassinelli, M. (VerfasserIn) , Tu, X. L. (VerfasserIn) , Wang, M. (VerfasserIn) , Weick, H. (VerfasserIn) , Winters, D. F. A. (VerfasserIn) , Winters, Natalya (VerfasserIn) , Woods, P. J. (VerfasserIn) , Yamaguchi, T. (VerfasserIn) , Zhang, G. L. (VerfasserIn) , Ohtsubo, T. (VerfasserIn)
Dokumenttyp: Article (Journal)
Sprache:Englisch
Veröffentlicht: 25 September 2013
In: Physics letters
Year: 2013, Jahrgang: 726, Heft: 4/5, Pages: 638-645
ISSN:1873-2445
DOI:10.1016/j.physletb.2013.09.033
Online-Zugang:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1016/j.physletb.2013.09.033
Verlag, lizenzpflichtig, Volltext: https://www.sciencedirect.com/science/article/pii/S0370269313007624
Volltext
Verfasserangaben:Two-Body-Weak-Decays Collaboration: P. Kienle, F. Bosch, P. Bühler, T. Faestermann, Yu.A. Litvinov, N. Winckler, M.S. Sanjari, D.B. Shubina, D. Atanasov, H. Geissel, V. Ivanova, X.L. Yan, D. Boutin, C. Brandau, I. Dillmann, Ch. Dimopoulou, R. Hess, P.-M. Hillebrand, T. Izumikawa, R. Knöbel, J. Kurcewicz, N. Kuzminchuk, M. Lestinsky, S.A. Litvinov, X.W. Ma, L. Maier, M. Mazzocco, I. Mukha, C. Nociforo, F. Nolden, Ch. Scheidenberger, U. Spillmann, M. Steck, Th. Stöhlker, B.H. Sun, F. Suzaki, T. Suzuki, S.Yu. Torilov, M. Trassinelli, X.L. Tu, M. Wang, H. Weick, D.F.A. Winters, N. Winters, P.J. Woods, T. Yamaguchi, G.L. Zhang, T. Ohtsubo
Beschreibung
Zusammenfassung:The periodic time modulations, found recently in the two-body orbital electron capture (EC) decay of both, hydrogen-like 140Pr58+ and 142Pm60+ ions, with periods near to 7 s and amplitudes of about 20%, were re-investigated for the case of 142Pm60+ by using a 245 MHz resonator cavity with a much improved sensitivity and time resolution. We observed that the exponential EC decay is modulated with a period T=7.11(11) s, in accordance with a modulation period T=7.12(11) s as obtained from simultaneous observations with a capacitive pick-up, employed also in the previous experiments. The modulation amplitudes amount to aR=0.107(24) and aP=0.134(27) for the 245 MHz resonator and the capacitive pick-up, respectively. These new results corroborate for both detectors exactly our previous findings of modulation periods near to 7 s, though with distinctly smaller amplitudes. Also the three-body β+ decays have been analyzed. For a supposed modulation period near to 7 s we found an amplitude a=0.027(27), compatible with a=0 and in agreement with the preliminary result a=0.030(30) of our previous experiment. These observations could point at weak interaction as origin of the observed 7 s-modulation of the EC decay. Furthermore, the data suggest that interference terms occur in the two-body EC decay, although the neutrinos are not directly observed.
Beschreibung:Im Titel sind das Pluszeichen, die Zahl 142 und 60+ hochgestellt
Gesehen am 07.04.2021
Beschreibung:Online Resource
ISSN:1873-2445
DOI:10.1016/j.physletb.2013.09.033

Ähnliche Einträge