Fine structure in the alpha decay of high-spin isomers in Lu-155 and Hf-156

E. Parr, R.D. Page, D.T. Joss, F.A. Ali, K. Auranen, L. Capponi, T. Grahn, P.T. Greenlees, J. Henderson, A. Herzan, U. Jakobsson, R. Julin, S. Juutinen, J. Konki, M. Labiche, M. Leino, P.J.R. Mason, C. McPeake, D. O'Donnell, J. PakarinenP. Papadakis, J. Partanen, P. Peura, P. Rahkila, J.P. Revill, P. Ruotsalainen, M. Sandzelius, J. Saren, C. Scholey, J. Simpson, J.F. Smith, M. Smolen, J. Sorri, S. Stolze, A. Thornthwaite, J. Uusitalo

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Abstract

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.
Original languageEnglish
Article number024321
JournalPhysical Review C
Volume98
Issue number2
DOIs
Publication statusPublished - 29 Aug 2018

Cite this

Parr, E., Page, R. D., Joss, D. T., Ali, F. A., Auranen, K., Capponi, L., ... Uusitalo, J. (2018). Fine structure in the alpha decay of high-spin isomers in Lu-155 and Hf-156. Physical Review C, 98(2), [024321]. https://doi.org/10.1103/PhysRevC.98.024321
Parr, E. ; Page, R.D. ; Joss, D.T. ; Ali, F.A. ; Auranen, K. ; Capponi, L. ; Grahn, T. ; Greenlees, P.T. ; Henderson, J. ; Herzan, A. ; Jakobsson, U. ; Julin, R. ; Juutinen, S. ; Konki, J. ; Labiche, M. ; Leino, M. ; Mason, P.J.R. ; McPeake, C. ; O'Donnell, D. ; Pakarinen, J. ; Papadakis, P. ; Partanen, J. ; Peura, P. ; Rahkila, P. ; Revill, J.P. ; Ruotsalainen, P. ; Sandzelius, M. ; Saren, J. ; Scholey, C. ; Simpson, J. ; Smith, J.F. ; Smolen, M. ; Sorri, J. ; Stolze, S. ; Thornthwaite, A. ; Uusitalo, J. / Fine structure in the alpha decay of high-spin isomers in Lu-155 and Hf-156. In: Physical Review C. 2018 ; Vol. 98, No. 2.
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title = "Fine structure in the alpha decay of high-spin isomers in Lu-155 and Hf-156",
abstract = "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.",
author = "E. Parr and R.D. Page and D.T. Joss and F.A. Ali and K. Auranen and L. Capponi and T. Grahn and P.T. Greenlees and J. Henderson and A. Herzan and U. Jakobsson and R. Julin and S. Juutinen and J. Konki and M. Labiche and M. Leino and P.J.R. Mason and C. McPeake and D. O'Donnell and J. Pakarinen and P. Papadakis and J. Partanen and P. Peura and P. Rahkila and J.P. Revill and P. Ruotsalainen and M. Sandzelius and J. Saren and C. Scholey and J. Simpson and J.F. Smith and M. Smolen and J. Sorri and S. Stolze and A. Thornthwaite and J. Uusitalo",
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Parr, E, Page, RD, Joss, DT, Ali, FA, Auranen, K, Capponi, L, Grahn, T, Greenlees, PT, Henderson, J, Herzan, A, Jakobsson, U, Julin, R, Juutinen, S, Konki, J, Labiche, M, Leino, M, Mason, PJR, McPeake, C, O'Donnell, D, Pakarinen, J, Papadakis, P, Partanen, J, Peura, P, Rahkila, P, Revill, JP, Ruotsalainen, P, Sandzelius, M, Saren, J, Scholey, C, Simpson, J, Smith, JF, Smolen, M, Sorri, J, Stolze, S, Thornthwaite, A & Uusitalo, J 2018, 'Fine structure in the alpha decay of high-spin isomers in Lu-155 and Hf-156', Physical Review C, vol. 98, no. 2, 024321. https://doi.org/10.1103/PhysRevC.98.024321

Fine structure in the alpha decay of high-spin isomers in Lu-155 and Hf-156. / Parr, E.; Page, R.D.; Joss, D.T.; Ali, F.A.; Auranen, K.; Capponi, L.; Grahn, T.; Greenlees, P.T.; Henderson, J.; Herzan, A.; Jakobsson, U.; Julin, R.; Juutinen, S.; Konki, J.; Labiche, M.; Leino, M.; Mason, P.J.R.; McPeake, C.; O'Donnell, D.; Pakarinen, J.; Papadakis, P.; Partanen, J.; Peura, P.; Rahkila, P.; Revill, J.P.; Ruotsalainen, P.; Sandzelius, M.; Saren, J.; Scholey, C.; Simpson, J.; Smith, J.F.; Smolen, M.; Sorri, J.; Stolze, S.; Thornthwaite, A.; Uusitalo, J.

In: Physical Review C, Vol. 98, No. 2, 024321, 29.08.2018.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Fine structure in the alpha decay of high-spin isomers in Lu-155 and Hf-156

AU - Parr, E.

AU - Page, R.D.

AU - Joss, D.T.

AU - Ali, F.A.

AU - Auranen, K.

AU - Capponi, L.

AU - Grahn, T.

AU - Greenlees, P.T.

AU - Henderson, J.

AU - Herzan, A.

AU - Jakobsson, U.

AU - Julin, R.

AU - Juutinen, S.

AU - Konki, J.

AU - Labiche, M.

AU - Leino, M.

AU - Mason, P.J.R.

AU - McPeake, C.

AU - O'Donnell, D.

AU - Pakarinen, J.

AU - Papadakis, P.

AU - Partanen, J.

AU - Peura, P.

AU - Rahkila, P.

AU - Revill, J.P.

AU - Ruotsalainen, P.

AU - Sandzelius, M.

AU - Saren, J.

AU - Scholey, C.

AU - Simpson, J.

AU - Smith, J.F.

AU - Smolen, M.

AU - Sorri, J.

AU - Stolze, S.

AU - Thornthwaite, A.

AU - Uusitalo, J.

PY - 2018/8/29

Y1 - 2018/8/29

N2 - 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.

AB - 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.

U2 - 10.1103/PhysRevC.98.024321

DO - 10.1103/PhysRevC.98.024321

M3 - Article

VL - 98

JO - Physical Review C

JF - Physical Review C

SN - 2469-9985

IS - 2

M1 - 024321

ER -

Parr E, Page RD, Joss DT, Ali FA, Auranen K, Capponi L et al. Fine structure in the alpha decay of high-spin isomers in Lu-155 and Hf-156. Physical Review C. 2018 Aug 29;98(2). 024321. https://doi.org/10.1103/PhysRevC.98.024321