Table of Contents
Research Letters in Physics
Volume 2009, Article ID 524957, 4 pages
Research Letter

On “GSI Oscillations” as Interference of Two Closely Spaced Ground Mass Eigenstates of H-Like Mother Ions

1Atominstitut der Österreichischen Universitäten, Technische Universität Wien, Wiedner Hauptstrasse 8-10, 1040 Wien, Austria
2Stefan Meyer Institut für subatomare Physik, Österreichische Akademie der Wissenschaften, Boltzmanngasse 3, 1090 Wien, Austria
3Excellence Cluster Universe, Technische Universität München, 85748 Garching, Germany
4St. Petersburg Nuclear Physics Institute, Orlova Roscha 1, Gatchina 188300, Russia
5State Polytechnic University of St. Petersburg, Polytechnicheskaya 29, St. Petersburg 195251, Russia

Received 26 June 2009; Accepted 4 August 2009

Academic Editor: Peter Blunden

Copyright © 2009 M. Faber et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


We analyse the hypothesis that the “GSI oscillations” of the K-shell electron capture decay (EC) rates of the H-like heavy ions are caused by quantum beats from a coherent state of two closely spaced ground mass-eigenstates | 𝑚 and | 𝑚 of decaying H-like heavy ions. We apply this mechanism to the calculation of the 𝛽 + -decay rates of the H-like heavy ions and discuss the dynamics of the production of the H-like heavy ions with two closely spaced ground mass-eigenstates at GSI experiments. We show that such a mechanism cannot describe simultaneously the experimental data on both the EC-decay and 𝛽 + -decay rates of the H-like heavy ions, measured at GSI.