Time Modulation of the {beta}{sup +}-Decay Rate of H-Like {sup 140}Pr{sup 58+} Ions

Journal Article · Fri Oct 31 00:00:00 EDT 2008 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.101.182501· OSTI ID:21179866

Ivanov, A N ^[1]; Kryshen, E L ^[2]; Pitschmann, M ^[1]; Kienle, P ^[3]

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1. Atominstitut der Oesterreichischen Universitaeten, Technische Universitaet Wien, Wiedner Hauptstrasse 8-10, A-1040 Wien (Austria)
2. Petersburg Nuclear Physics Institute, 188300 Gatchina, Orlova roscha 1 (Russian Federation)
3. Stefan Meyer Institut fuer subatomare Physik Oesterreichische Akademie der Wissenschaften, Boltzmanngasse 3, A-1090, Wien (Austria)

Recent experimental data at GSI on the rates of the number of daughter ions, produced by the nuclear K-shell electron capture (EC) decays of the H-like ions {sup 140}Pr{sup 58+} and {sup 142}Pm{sup 60+}, suggest that they are modulated in time with periods T{sub EC}{approx_equal}7 sec and amplitudes a{sub EC}{approx_equal}0.20. Since it is known that these ions are unstable also under the nuclear positron ({beta}{sup +}) decays, we study a possible time dependence of the nuclear {beta}{sup +}-decay rate of the H-like {sup 140}Pr{sup 58+} ion. We show that the time dependence of the {beta}{sup +}-decay rate of the H-like {sup 140}Pr{sup 58+} ion as well as any H-like heavy ions cannot be observed.

• OSTI ID: 21179866
• Journal Information: Physical Review Letters, Vol. 101, Issue 18; Other Information: DOI: 10.1103/PhysRevLett.101.182501; (c) 2008 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BETA DECAY
ELECTRON CAPTURE
K SHELL
POSITRONS
PRASEODYMIUM 140
PRASEODYMIUM IONS
PROMETHIUM 142
PROMETHIUM IONS
TIME DEPENDENCE