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

  title={High-resolution measurement of the time-modulated orbital electron capture and of the $\beta$+ decay of hydrogen-like 142Pm60+ ions},
  author={T. Kienle and F. Bosch and P. Buhler and T. Faestermann and Y. Litvinov and M. Sanjari and D. Shubina and N. Winckler and D. Atanasov and H. Geissel and V. Ivanova and X. L. Yan and D. Boutin and C. Brandau and I. Dillmann and C. Dimopoulou and R. Hess and P. Hillebrand and T. Izumikawa and R. Knobel and J. Kurcewicz and N. Kuzminchuk and M. Lestinsky and S. Litvinov and X. Ma and L. Maier and M. Mazzocco and I. Mukha and C. Nociforo and F. Nolden and C. Scheidenberger and U. Spillmann and M. Steck and T. Stohlker and B. Sun and F. Suzaki and T. Suzuki and S. Torilov and M. Trassinelli and X. Tu and M. Wang and H. Weick and D. Winters and N. Winters and P. Woods and T. Yamaguchi and G. L. Zhang},
  journal={Physics Letters B},
Abstract 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… Expand

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