Properties of 152Gd collective states

J. Adam, J. Dobeš, M. Honusek, V. G. Kalinnikov, J. Mrázek, V. S. Pronskikh, P. Čaloun, N. A. Lebedev, V. I. Stegailov, V. M. Tsoupko-Sitnikov

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

The decays of 152Tb (T1/2 = 17.5 h) and 152Gd excited states have been investigated by the analysis of γ-rays and γγ-coincidences measured with the use of high-resolution HPGe detectors. The source of 152Tb was prepared by chromatographic isolation followed by electromagnetic separation from a tantalum target irradiated by an internal proton beam of the LNP JINR phasotron. New and more precise data on the γ-transitions and excited states of 152Gd are reported. Using previously published data on internal-conversion electrons many transition multipolarities are suggested, some of them with E0 admixture. The EC/β+ ratio was found for a number of low-lying levels, for most of the levels their spins, parities, and log ft are given. The excited levels of 152Gd were deduced from the analysis of γγ-coincidences. The experimental level energies and reduced transition probabilities are compared with the calculations by phenomenological formulae as well as in the frameworks of theoretical models.

Original languageEnglish
Pages (from-to)605-626
Number of pages22
JournalEuropean Physical Journal A
Volume18
Issue number4
DOIs
StatePublished - Dec 2003
Externally publishedYes

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