Two-phonon octupole excitation in Gd146

L. Caballero, B. Rubio, P. Kleinheinz, S. W. Yates, A. Algora, A. Dewald, A. Fitzler, A. Gadea, J. Jolie, R. Julin, A. Linnemann, S. Lunardi, R. Menegazzo, O. Möller, E. Nácher, M. Piiparinen, J. Blomqvist

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Abstract

Based on experimental evidence from the Sm144(α,2n) reaction, the 3484.7-keV 6+ state in Gd146 is identified as the highest-spin member of the 3--3- two-phonon octupole quartet. A previously unknown γ line of 1905.8 keV and E3 character feeding the 3- octupole state has been observed. These results represent the first observation of a 6+→3-→0+ cascade of two E3 transitions in an even-even nucleus and provide strong support for the interpretation of the 6+ state as a two-phonon octupole excitation.

Original languageEnglish
Article number031301
JournalPhysical Review C - Nuclear Physics
Volume81
Issue number3
DOIs
Publication statusPublished - Mar 9 2010

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ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Caballero, L., Rubio, B., Kleinheinz, P., Yates, S. W., Algora, A., Dewald, A., Fitzler, A., Gadea, A., Jolie, J., Julin, R., Linnemann, A., Lunardi, S., Menegazzo, R., Möller, O., Nácher, E., Piiparinen, M., & Blomqvist, J. (2010). Two-phonon octupole excitation in Gd146. Physical Review C - Nuclear Physics, 81(3), [031301]. https://doi.org/10.1103/PhysRevC.81.031301