Experimental evidence for low-lying quadrupole isovector excitation of 208 Po

A. Yaneva, D. Kocheva*, G. Rainovski, J. Jolie, N. Pietralla, A. Blazhev, A. Dewald, M. Djongolov, C. Fransen, K. A. Gladnishki, C. Henrich, I. Homm, K. E. Ide, P. R. John, D. Kalaydjieva, V. Karayonchev, R. Kern, J. Kleemann, Th Kröll, C. Müller-GatermannM. Scheck, P. Spagnoletti, M. Stoyanova, V. Werner

*Corresponding author for this work

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We present the results from an experiment dedicated to measure the lifetime of the 22+ state, candidate for the one-phonon mixed-symmetry state, of 208Po. This nucleus was studied in the α-transfer reaction 204Pb(12C,8Be)208Po and the lifetime of the 22+ state was determined by utilizing the Doppler-shift attenuation method. The experimental data show that the 22+ state decays with a sizable M1 transition to the 21+ state revealing its isovector nature.

Original languageEnglish
Article number246
Number of pages7
JournalEuropean Physical Journal A
Issue number10
Publication statusPublished - 2 Oct 2020


  • lifetimes
  • electromagnetic transitions
  • transfer reactions
  • 190≤ A ≤219


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