Level structure of odd-mass Pr isotopes: Decay of 3.0-min Ce-145 to levels of Pr-145
作者： E. M. Baum , J. D. Robertson , P. F. Mantica , S. H. Faller , C. A. Stone
关键词: Population 、 Radioactive decay 、 Level structure 、 Ground state 、 Interacting boson model 、 Angular momentum 、 Fermi level 、 Physics 、 Spectral line 、 Atomic physics
摘要: The structure of $^{145}\mathrm{Pr}$ has been investigated by measuring the gamma-ray singles, coincidence, and angular correlation spectra, along with conversion-electron singles spectra for decay 3.0-min $^{145}\mathrm{Ce}$ to levels $^{145}\mathrm{Pr}$. A level scheme is proposed that includes a number new as well spin parity assignments several levels. conversion-coefficient measurements establish presence low-energy ${(3/2}^{\mathrm{\ensuremath{-}}}$ at 787 keV whose strong population in beta confirms negative ground state $^{145}\mathrm{Ce}$. Interacting boson-fermion model calculations $^{143}\mathrm{Pr}$ are found be reasonable agreement observed positive-parity levels, while suggests coexistence more deformed configurations.
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