On the Time-Modulation of the beta^+$-Decay Rate of H-like 140Pr58+ Ion

Details On the Time-Modulation of the beta^+$-Decay Rate of H-like 140Pr58+ Ion On the Time-Modulation of the beta^+$-Decay Rate of H-like 140Pr58+ Ion

2008-06-16

arxiv.org/abs/0806.2543v1

Physics

Nuclear Physics

Nuclear Theory

4 pages, 3 figures

Scientific paper

10.1103/PhysRevLett.101.182501

According to recent experimental data at GSI, the rates of the number of daughter ions, produced by the nuclear K-shell electron capture (EC) decays of the H-like ions 140Pr58+ and 142Pm60+, are modulated in time with periods T_(EC) simeq 7 s and amplitudes a_(EC) simeq 0.20. We study a possible time-dependence of the nuclear positron (beta^+) decay rate of the H-like 140Pr58+. We show that the time-dependence of the beta^+ decay rate of the H-like 140Pr58+ ion as well as any H-like heavy ions cannot be observed. This result can be used as a prediction for future analysis of the time-dependence of the beta^+ decay rates of the H-like heavy ions 140Pr58+ and 142Pm60+ at GSI for the test of the measuring method.

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