Fine structure in the α decay of high-spin isomers in 155Lu and 156Hf
- Parr, E.
- Page, R. D.
- Joss, D. T.
- Ali, F. A.
- Auranen, Kalle
- Capponi, L.
- Grahn, Tuomas
- Greenlees, Paul
- Henderson, J.
- Herzan, Andrej
- Jakobsson, Ulrika
- Julin, Rauno
- Juutinen, Sakari
- Konki, Joonas
- Labiche, M.
- Leino, Matti
- Mason, P. J. R.
- McPeake, C.
- O’Donnell, D.
- Pakarinen, Janne
- Papadakis, Philippos
- Partanen, Jari
- Peura, Pauli
- Rahkila, Panu
- Revill, J. P.
- Ruotsalainen, Panu
- Sandzelius, Mikael
- Sarén, Jan
- Scholey, Catherine
- Simpson, J.
- Smith, J. F.
- Smolen, M.
- Sorri, Juha
- Stolze, Sanna
- Thornthwaite, A.
- Uusitalo, Juha
DOIAbstract
Fine structure in the α decay of high-spin isomers in 155Lu(25/2−) and 156Hf (8+) has been studied for the first time using αγ -coincidence analysis. Three new α decays from 155Lu(25/2−) and two from 156Hf (8+) have been identified, populating seniority s > 1 states in the N = 82 nuclei 151Tm and 152Yb, respectively. The reduced hindrance factors of the α decays support the previous configuration assignments of the populated states. This is the first observation of states with excitation energy greater than 1.5 MeV being populated following α decay in nuclei outside of the 208Pb region.peerReviewe
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