(Oscillating) non-exponential decays of unstable states
- We discuss deviations from the exponential decay law which occur when going beyond the BreitWigner distribution for an unstable state. In particular, we concentrate on an oscillating behavior, remisiscent of the Rabi-oscillations, in the short-time region. We propose that these oscillations can explain the socalled GSI anomaly, which measured superimposed oscillations on top of the exponential law for hydrogen-like nuclides decaying via electron-capture. Moreover, we discuss the possibility that the deviations from the Breit-Wigner in the case of the GSI anomaly are (predominantely) caused by the interaction of the unstable state with the measurement apparatus. The consequences of this scenario, such as the non-observation of oscillations in an analogous experiment perfromed at Berkley, are investigated.
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| Author: | Francesco GiacosaORCiDGND, Giuseppe PagliaraORCiDGND |
|---|---|
| URN: | urn:nbn:de:hebis:30:3-274390 |
| URL: | https://pos.sissa.it/archive/conferences/160/028/Bormio2012_028.pdf |
| ISSN: | 1824-8039 |
| ArXiv Id: | http://arxiv.org/abs/1204.1896 |
| Parent Title (English): | Proceedings of Science |
| Publisher: | SISSA |
| Place of publication: | Trieste |
| Document Type: | Article |
| Language: | English |
| Date of Publication (online): | 2012/12/14 |
| Date of first Publication: | 2012/07/11 |
| Publishing Institution: | Universitätsbibliothek Johann Christian Senckenberg |
| Contributing Corporation: | 50th International Winter Meeting on Nuclear Physics, 23-27 January 2012, Bormio, Italy |
| Release Date: | 2012/12/14 |
| Volume: | 2012 |
| Issue: | (Bormio2012)028 |
| Page Number: | 10 |
| First Page: | 1 |
| Last Page: | 10 |
| Note: | © Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike Licence. |
| HeBIS-PPN: | 451013573 |
| Institutes: | Physik / Physik |
| Dewey Decimal Classification: | 5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik |
| Sammlungen: | Universitätspublikationen |
| Licence (German): |  Creative Commons - Namensnennung-Keine kommerzielle Nutzung-Weitergabe unter gleichen Bedingungen |
