Lifetime measurements of the low-lying excited states of 208Po

D. Kocheva*, A. Yaneva, D. Kalaydjieva, G. Rainovski, J. Jolie, N. Pietralla, M. Beckers, A. Blazhev, L. Bussmann, M. Cappellazzo, A. Dewald, F. Diel, M. Djongolov, F. Dunkel, A. Esmaylzadeh, B. Falk, C. Fransen, J. Garbe, L. Gerhard, R.-B. GerstK. A. Gladnishki, A. Goldkuhle, G. Hackenberg, C. Henrich, I. Homm, K. Ide, V. Karayonchev, R. Kern, J. Kleemann, L. Knafla, L. Kornwebel, Th. Kröll, M. Ley, C. Muller-Gatermann, M. Scheck, T. Schmidt, P. Spagnoletti, M. Stoyanova, M. Werner

*Corresponding author for this work

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Abstract

In this study we present the preliminary results about the lifetimes of the 2+2, 4+1 states of 208Po and the upper limit of the lifetime of the 2+1 state. For measuring the lifetimes of the 2+1 and 4+1 states the Recoil Distance Doppler Shift (RDDS) method and for the lifetime of the 2+2 state the Doppler Shift Attenuation method (DSAM) were used. The resulting absolute transition strength B(M1; 2+2 to 2+1)≥0.122(20) μ2N reveals the predominant isovector nature of the 2+2 state of 208Po.
Original languageEnglish
Article number012020
Number of pages8
JournalJournal of Physics: Conference Series
Volume1555
DOIs
Publication statusPublished - 1 May 2020

Keywords

  • lifetime measurement
  • 208Po
  • Recoil Distance Doppler Shift method
  • RDDS method
  • Doppler Shift Attenuation method
  • DSAM

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