Level structures of 131,129Ce observed in beta decay

A. Gizon, J. Genevey, D. Bucurescu, Gh Cǎta-Danil, J. Gizon, J. Inchaouh, D. Barnéoud, T. Von Egidy, C. F. Liang, B. M. Nyakó, P. Paris, I. Penev, A. Płochocki, E. Ruchowska, C. A. Ur, B. Weiss, L. Zolnai

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The low-lying levels of the odd-mass nuclei 131Ce and 129Ce have been investigated by means of the β+/EC decays of 131g+mPr and 129Pr, respectively. The Pr nuclei were obtained by bombarding 94,96Mo targets with a 255 MeV 40Ca beam. The radioactivities produced in the reactions were transported with a He-jet device and γγt, Xγt, e-γt coincidence measurements were performed. Conversion electrons were measured with a magnetic spectrometer and transition multipolarities were deduced. On-line mass separation was used to select the 129Pr β-decay. The resulting level schemes of 131,129,127Ce are discussed in connection with level systematics and calculations performed by using the Interacting Boson-Fermion Model (IBFM).

Original languageEnglish
Pages (from-to)301-333
Number of pages33
JournalNuclear Physics A
Issue number3
Publication statusPublished - Aug 12 1996



  • Measured Eγ, Iγ, γγ-coin, Xγ-coin, eγ-coin, internal conversion electrons, T
  • Radioactivity Pr(EC),(β)

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Gizon, A., Genevey, J., Bucurescu, D., Cǎta-Danil, G., Gizon, J., Inchaouh, J., Barnéoud, D., Von Egidy, T., Liang, C. F., Nyakó, B. M., Paris, P., Penev, I., Płochocki, A., Ruchowska, E., Ur, C. A., Weiss, B., & Zolnai, L. (1996). Level structures of 131,129Ce observed in beta decay. Nuclear Physics A, 605(3), 301-333. https://doi.org/10.1016/0375-9474(96)00178-9