High-resolution measurement of the time-modulated orbital electron capture and of the beta(+) decay of hydrogen-like Pm-142(60+) ions
文献类型：期刊论文
| 作者 | Kurcewicz, J.9,17; Kienle, P.8; Bosch, F.9; Buhler, P.10; Faestermann, T.8; Litvinov, Yu. A.9,19,20; Winckler, N.9,20; Sanjari, M. S.3,9,22; Shubina, D. B.19,20; Atanasov, D.9,19,20 |
| 刊名 | PHYSICS LETTERS B
 |
| 出版日期 | 2013-11-04 |
| 卷号 | 726页码:638-645 |
| 关键词 | Two-body Weak Decays Orbital Electron Capture Ion Storage Rings Highly-charged Ions |
| ISSN号 | 0370-2693 |
| DOI | 10.1016/j.physletb.2013.09.033 |
| 文献子类 | Article |
| 英文摘要 | The periodic time modulations, found recently in the two-body orbital electron capture (EC) decay of both, hydrogen-like Pr-140(58+) and Pm-142(60+) ions, with periods near to 7 s and amplitudes of about 20%, were re-investigated for the case of Pm-142(60+) 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 a(R) = 0.107(24) and a(P) = 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 beta(+) 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. (C) 2013 Elsevier B.V. All rights reserved. |
| WOS关键词 | SCHOTTKY MASS-SPECTROMETRY ; ESR ; BEAMS |
| 资助项目 | Japanese Ministry of Education, Science, Sport and Culture[A 19204023] |
| WOS研究方向 | Astronomy & Astrophysics ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000327907000009 |
| 出版者 | ELSEVIER SCIENCE BV |
| 源URL | [http://119.78.100.186/handle/113462/48169]  |
| 专题 | 近代物理研究所_实验物理中心 |
| 通讯作者 | Bosch, F. |
| 作者单位 | 1.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China 2.Univ Giessen, Inst Phys 2, D-35392 Giessen, Germany 3.Goethe Univ Frankfurt, D-60438 Frankfurt, Germany 4.CNRS, INSP, F-75005 Paris, France 5.Univ Edinburgh, Sch Phys & Astron, Edinburgh EH9 3JZ, Midlothian, Scotland 6.Univ Paris 06, UMR 7588, F-75005 Paris, France 7.Niigata Univ, Dept Phys, Niigata 9502181, Japan 8.Tech Univ Munich, D-85748 Garching, Germany 9.GSI Helmholtzzentrum Schwerionenforsch, D-64291 Darmstadt, Germany 10.Stefan Meyer Inst Subatomare Phys, A-1090 Vienna, Austria |
| 推荐引用方式 GB/T 7714 | Kurcewicz, J.,Kienle, P.,Bosch, F.,et al. High-resolution measurement of the time-modulated orbital electron capture and of the beta(+) decay of hydrogen-like Pm-142(60+) ions[J]. PHYSICS LETTERS B,2013,726:638-645. |
| APA | Kurcewicz, J..,Kienle, P..,Bosch, F..,Buhler, P..,Faestermann, T..,...&Two-Body-Weak-Decays Collaboration.(2013).High-resolution measurement of the time-modulated orbital electron capture and of the beta(+) decay of hydrogen-like Pm-142(60+) ions.PHYSICS LETTERS B,726,638-645. |
| MLA | Kurcewicz, J.,et al."High-resolution measurement of the time-modulated orbital electron capture and of the beta(+) decay of hydrogen-like Pm-142(60+) ions".PHYSICS LETTERS B 726(2013):638-645. |
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来源：近代物理研究所
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