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| Home > Publications database > Measurement of the $β^+$ and Orbital Electron-Capture Decay Rates in Fully Ionized, Hydrogenlike, and Heliumlike $^{140}Pr$ Ions |
| Journal Article | GSI-2013-05186 |
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2007
APS
College Park, Md.
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Please use a persistent id in citations: doi:10.1103/PhysRevLett.99.262501
Abstract: We report on the first measurement of the $\beta^+$- and orbital electron capture decay rates of $^{140}$Pr nuclei with the most simple electron configurations: bare nuclei, hydrogen-like and helium-like ions. The measured electron capture decay constant of hydrogen-like $^{140}$Pr$^{58+}$ ions is about 50% larger than that of helium-like $^{140}$Pr$^{57+}$ ions. Moreover, $^{140}$Pr ions with one bound electron decay faster than neutral $^{140}$Pr$^{0+}$ atoms with 59 electrons. To explain this peculiar observation one has to take into account the conservation of the total angular momentum, since only particular spin orientations of the nucleus and of the captured electron can contribute to the allowed decay.
- ddc:550
Note: 4 pages, 3 figures
Contributing Institute(s):
- Atomphysik (ATP)
- FRS / SFRS Experimente (FRS)
- Strahlkühlung (BCO)
- Kernspektroskopie (KSP)
- NuSTAR / MU Koordination (NUK)
Database coverage:
; Current Contents - Social and Behavioral Sciences ; JCR ; NCBI Molecular Biology Database ; Nationallizenz
; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection
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