High-spin states of 218Th

High-spin states of 218Th

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 lev...

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Veröffentlicht in:Journal of physics. G, Nuclear and particle physics Nuclear and particle physics, 2020-08, Vol.47 (9)
Hauptverfasser: O'Donnell, D, Page, R D, Grahn, T, Ali, F A, Auranen, K, Capponi, L, Carroll, R J, Chishti, M M R, Drummond, M C, Greenlees, P T, Henderson, J, Herzan, A, Jakobsson, U, Joss, D T, Julin, R, Juutinen, S, Konki, J, Labiche, M, Leino, M, Mason, P J R, McPeake, C G, Pakarinen, J, Papadakis, P, Partanen, J, Peura, P, Rahkila, P, Revill, J, Ruotsalainen, P, Sandzelius, M, Sarén, J, Sayği, B, Scholey, C, Simpson, J, Smith, J F, Smolen, M, Sorri, J, Stolze, S, Sullivan, C M, Thornthwaite, A, Uusitalo, J, Kumar, A, Srivastava, P C
Format: Artikel
Sprache:eng
Schlagworte:
decay
fusion-evaporation reactions
shell model
thorium
γ-ray spectroscopy
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Zusammenfassung: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.
ISSN:0954-3899
1361-6471
DOI:10.1088/1361-6471/aba16c