High-spin states of 218Th

D O'Donnell*, R D Page, T Grahn, F A Ali, K Auranen, L Capponi, R J Carroll, M M R Chishti, M C Drummond, P T Greenlees, J Henderson, A Herzan, U Jakobsson, D T Joss, R Julin, S Juutinen, J Konki, M Labiche, M Leino, P J R MasonC G McPeake, J Pakarinen, P Papadakis, J Partanen, P Peura, P Rahkila, J Revill, P Ruotsalainen, M Sandzelius, J Sarén, B Saygi, C Scholey, J Simpson, J F Smith, M Smolen, J Sorri, S Stolze, C M Sullivan, A Thornthwaite, J Uusitalo, A Kumar, P C Srivastava

*Corresponding author for this work

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Abstract

High-spin states in the N = 128 nucleus 218Th have been investigated following fusion–evaporation reactions, using the recoil-decay tagging technique. Due to the short-lived nature of the ground state of 218Th prompt γ rays have been correlated with the α decay of the daughter nucleus 214Ra. The level scheme representing the decay of excited states has been extended to (16+) with the observation of six previously unreported transitions. The observations are compared with the results of shell model calculations and within the context of the systematics of neighbouring nuclei.
Original languageEnglish
Article number095103
Pages (from-to)1-12
Number of pages12
JournalJournal of Physics G: Nuclear and Particle Physics
Volume47
Issue number9
Early online date30 Jun 2020
DOIs
Publication statusPublished - 4 Aug 2020

Keywords

  • high-spin states
  • fusion-evaporation
  • nuclei

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