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New test of modulated electron capture decay of hydrogen-like 142Pm ions: Precision measurement of purely exponential decay

Ozturk, F.C., Akkus, B., Atanasov, D., Beyer, H., Bosch, F., Boutin, D., Brandau, C., Bühler, P., Cakirli, R.B., Chen, R.J. , Chen, W.D., Chen, X.C., Dillmann, I., Dimopoulou, C., Enders, W., Essel, H.G., Faestermann, T., Forstner, O., Gao, B.S., Geissel, H., Gernhäuser, R., Grisenti, R.E., Gumberidze, A., Hagmann, S., Heftrich, T., Heil, M., Herdrich, M.O., Hillenbrand, P.-M., Izumikawa, T., Kienle, P., Klaushofer, C., Kleffner, C., Kozhuharov, C., Knöbel, R.K., Kovalenko, O., Kreim, S., Kühl, T., Lederer-Woods, C., Lestinsky, M., Litvinov, S.A., Litvinov, Yu.A., Liu, Z., Ma, X.W., Maier, L., Mei, B., Miura, H., Mukha, I., Najafi, A., Nagae, D., Nishimura, T., Nociforo, C., Nolden, F., Ohtsubo, T., Oktem, Y., Omika, S., Ozawa, A., Petridis, N., Piotrowski, J., Reifarth, R., Rossbach, J., Sánchez, R., Sanjari, M.S., Scheidenberger, C., Sidhu, R.S., Simon, H., Spillmann, U., Steck, M., Stöhlker, Th., Sun, B.H., Susam, L.A., Suzaki, F., Suzuki, T., Torilov, S.Yu., Trageser, C., Trassinelli, M., Trotsenko, S., Tu, X.L., Walker, P.M., Wang, M., Weber, G., Weick, H., Winckler, N., Winters, D.F.A., Woods, P.J., Yamaguchi, T., Xu, X.D., Yan, X.L., Yang, J.C., Yuan, Y.J., Zhang, Y.H. and Zhou, X.H. (2019) New test of modulated electron capture decay of hydrogen-like 142Pm ions: Precision measurement of purely exponential decay PHYSICS LETTERS B, 797, 134800.

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An experiment addressing electron capture (EC) decay of hydrogen-like 142Pm60+ions has been conducted at the experimental storage ring (ESR) at GSI. The decay appears to be purely exponential and no modulations were observed. Decay times for about 9000 individual EC decays have been measured by applying the single-ion decay spectroscopy method. Both visually and automatically analysed data can be described by a single exponential decay with decay constants of 0.0126(7)s−1for automatic analysis and 0.0141(7)s−1for manual analysis. If a modulation superimposed on the exponential decay curve is assumed, the best fit gives a modulation amplitude of merely 0.019(15), which is compatible with zero and by 4.9 standard deviations smaller than in the original observation which had an amplitude of 0.23(4).

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Physics
Authors :
Ozturk, F.C.
Akkus, B.
Atanasov, D.
Beyer, H.
Bosch, F.
Boutin, D.
Brandau, C.
Bühler, P.
Cakirli, R.B.
Chen, R.J.
Chen, W.D.
Chen, X.C.
Dillmann, I.
Dimopoulou, C.
Enders, W.
Essel, H.G.
Faestermann, T.
Forstner, O.
Gao, B.S.
Geissel, H.
Gernhäuser, R.
Grisenti, R.E.
Gumberidze, A.
Hagmann, S.
Heftrich, T.
Heil, M.
Herdrich, M.O.
Hillenbrand, P.-M.
Izumikawa, T.
Kienle, P.
Klaushofer, C.
Kleffner, C.
Kozhuharov, C.
Knöbel, R.K.
Kovalenko, O.
Kreim, S.
Kühl, T.
Lederer-Woods, C.
Lestinsky, M.
Litvinov, S.A.
Litvinov, Yu.A.
Liu, Z.
Ma, X.W.
Maier, L.
Mei, B.
Miura, H.
Mukha, I.
Najafi, A.
Nagae, D.
Nishimura, T.
Nociforo, C.
Nolden, F.
Ohtsubo, T.
Oktem, Y.
Omika, S.
Ozawa, A.
Petridis, N.
Piotrowski, J.
Reifarth, R.
Rossbach, J.
Sánchez, R.
Sanjari, M.S.
Scheidenberger, C.
Sidhu, R.S.
Simon, H.
Spillmann, U.
Steck, M.
Stöhlker, Th.
Sun, B.H.
Susam, L.A.
Suzaki, F.
Suzuki, T.
Torilov, S.Yu.
Trageser, C.
Trassinelli, M.
Trotsenko, S.
Tu, X.L.
Wang, M.
Weber, G.
Weick, H.
Winckler, N.
Winters, D.F.A.
Woods, P.J.
Yamaguchi, T.
Xu, X.D.
Yan, X.L.
Yang, J.C.
Yuan, Y.J.
Zhang, Y.H.
Zhou, X.H.
Date : 24 July 2019
DOI : 10.1016/j.physletb.2019.134800
Copyright Disclaimer : ©2019 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY license ( Funded by SCOAP³
Uncontrolled Keywords : Two body weak decay; Orbital electron capture; Single particle decay spectroscopy; Heavy ion storage ring
Depositing User : Diane Maxfield
Date Deposited : 12 Aug 2019 14:04
Last Modified : 12 Aug 2019 14:06

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