Weak decays of H-like 140Pr58+ and He-like 140Pr57+ ions

Abstract

The nuclear K-shell electron-capture (EC)and positron (beta+) decay constants, lambda_(EC) and lambda_(beta^+) of H-like 140Pr58+ and He-like 140Pr57+ ions, measured recently in the ESR ion storage ring at GSI, were calculated using standard weak interaction theory. The calculated ratios R = lambda_(EC)/lambda_(beta^+) of the decay constants agree with the experimental values within an accuracy better than 3 %.

Latex 14 pages, no figures, we have corrected some references, discussed in more detail the ratio of the EC-decay constants of the H-like and He-like ions and added Appendices with the detailed calculations of the weak decay constants

References in corpus (2)

• Observation of Non-Exponential Orbital Electron Capture Decays of Hydrogen-Like ${}^{140}$Pr and ${}^{142}$Pm Ions
• Measurement of the ${\beta }^{+}$ and orbital electron-capture decay rates in fully-ionized, hydrogen-like, and helium-like ${}^{140}$Pr ions

Cited by in corpus (7)

• On the time modulation of the K-shell electron capture decay rates of H-like heavy ions at GSI experiments
• On the Time-Modulation of the beta^+$-Decay Rate of H-like 140Pr58+ Ion
• New Test of Modulated Electron Capture Decay of Hydrogen-Like ${}^{142}$Pm Ions: Precision Measurement of Purely Exponential Decay
• On Continuum-State and Bound-State Beta Decay Rates of the Neutron
• First-Forbidden Continuum- and Bound-State beta^- -Decay Rates of Bare 205Hg80+ and 207Tl81+ Ions
• Kinematics and Quantum Field Theory of the Neutrino Oscillations Observed in the Time-modulated Orbital Electron Capture Decay in an Ion Storage Ring
• Finite-nuclear-size effect for hydrogenlike ions under high external pressure