Decay of a 19- isomeric state in 156Lu

M.C. Lewis, E. Parr, R.D. Page, C. McPeake, D.T. Joss, F.A. Ali, K. Auranen, A.D. Briscoe, 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 & 20 others M. Nyman, D. O'Donnell, J. Pakarinen, P. Papadakis, J. Partanen, P. Peura, P. Rahkila, J.P. Revill, P. Ruotsalainen, M. Sandzelius, J. Saren, B. Saygi, C. Scholey, J. Simpson, J.F. Smith, M. Smolen, J. Sorri, S. Stolze, A. Thornthwaite, J. Uusitalo

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Abstract

A multiparticle spin-trap isomeric state having a half-life of 179(4) ns and lying 2601 keV above the yrast 10+ state in 156Lu has been discovered. The 156Lu nuclei were produced by bombarding isotopically enriched 106Cd targets with beams of 58Ni ions, separated in flight using the gas-filled separator RITU and their decays were measured using the GREAT spectrometer. Analysis of the main decay path that populates yrast states observed previously suggests a spin-parity assignment of 19− for the isomeric state, which is consistent with isomeric states identified in the N = 85 isotones. Comparison with other decay paths in 156Lu indicates that the [πh−111/2⊗νh9/2]10+ state at the bottom of the yrast sequence is likely to be the α-decaying isomeric state, with the [πh−111/2⊗νf7/2]9+ state lying 62 keV above it. The relative ordering of the lowest-lying 9+ and 10+ states is inverted in 156Lu compared with its odd-odd isotones.
Original languageEnglish
Article number024302
JournalPhysical Review C
Volume98
Issue number2
DOIs
Publication statusPublished - 1 Aug 2018

Cite this

Lewis, M. C., Parr, E., Page, R. D., McPeake, C., Joss, D. T., Ali, F. A., ... Uusitalo, J. (2018). Decay of a 19- isomeric state in 156Lu. Physical Review C, 98(2), [024302]. https://doi.org/10.1103/PhysRevC.98.024302
Lewis, M.C. ; Parr, E. ; Page, R.D. ; McPeake, C. ; Joss, D.T. ; Ali, F.A. ; Auranen, K. ; Briscoe, A.D. ; 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. ; Nyman, M. ; O'Donnell, D. ; Pakarinen, J. ; Papadakis, P. ; Partanen, J. ; Peura, P. ; Rahkila, P. ; Revill, J.P. ; Ruotsalainen, P. ; Sandzelius, M. ; Saren, J. ; Saygi, B. ; Scholey, C. ; Simpson, J. ; Smith, J.F. ; Smolen, M. ; Sorri, J. ; Stolze, S. ; Thornthwaite, A. ; Uusitalo, J. / Decay of a 19- isomeric state in 156Lu. In: Physical Review C. 2018 ; Vol. 98, No. 2.
@article{fe546e85becb46c9a138b422fd220e73,
title = "Decay of a 19- isomeric state in 156Lu",
abstract = "A multiparticle spin-trap isomeric state having a half-life of 179(4) ns and lying 2601 keV above the yrast 10+ state in 156Lu has been discovered. The 156Lu nuclei were produced by bombarding isotopically enriched 106Cd targets with beams of 58Ni ions, separated in flight using the gas-filled separator RITU and their decays were measured using the GREAT spectrometer. Analysis of the main decay path that populates yrast states observed previously suggests a spin-parity assignment of 19− for the isomeric state, which is consistent with isomeric states identified in the N = 85 isotones. Comparison with other decay paths in 156Lu indicates that the [πh−111/2⊗νh9/2]10+ state at the bottom of the yrast sequence is likely to be the α-decaying isomeric state, with the [πh−111/2⊗νf7/2]9+ state lying 62 keV above it. The relative ordering of the lowest-lying 9+ and 10+ states is inverted in 156Lu compared with its odd-odd isotones.",
author = "M.C. Lewis and E. Parr and R.D. Page and C. McPeake and D.T. Joss and F.A. Ali and K. Auranen and A.D. Briscoe 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 M. Nyman 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 B. Saygi 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",
year = "2018",
month = "8",
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doi = "10.1103/PhysRevC.98.024302",
language = "English",
volume = "98",
journal = "Physical Review C",
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Lewis, MC, Parr, E, Page, RD, McPeake, C, Joss, DT, Ali, FA, Auranen, K, Briscoe, AD, Capponi, L, Grahn, T, Greenlees, PT, Henderson, J, Herzan, A, Jakobsson, U, Julin, R, Juutinen, S, Konki, J, Labiche, M, Leino, M, Mason, PJR, Nyman, M, O'Donnell, D, Pakarinen, J, Papadakis, P, Partanen, J, Peura, P, Rahkila, P, Revill, JP, Ruotsalainen, P, Sandzelius, M, Saren, J, Saygi, B, Scholey, C, Simpson, J, Smith, JF, Smolen, M, Sorri, J, Stolze, S, Thornthwaite, A & Uusitalo, J 2018, 'Decay of a 19- isomeric state in 156Lu', Physical Review C, vol. 98, no. 2, 024302. https://doi.org/10.1103/PhysRevC.98.024302

Decay of a 19- isomeric state in 156Lu. / Lewis, M.C.; Parr, E.; Page, R.D.; McPeake, C.; Joss, D.T.; Ali, F.A.; Auranen, K.; Briscoe, A.D.; 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.; Nyman, M.; O'Donnell, D.; Pakarinen, J.; Papadakis, P.; Partanen, J.; Peura, P.; Rahkila, P.; Revill, J.P.; Ruotsalainen, P.; Sandzelius, M.; Saren, J.; Saygi, B.; 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, 024302, 01.08.2018.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Decay of a 19- isomeric state in 156Lu

AU - Lewis, M.C.

AU - Parr, E.

AU - Page, R.D.

AU - McPeake, C.

AU - Joss, D.T.

AU - Ali, F.A.

AU - Auranen, K.

AU - Briscoe, A.D.

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 - Nyman, M.

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 - Saygi, B.

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 - 2018/8/1

Y1 - 2018/8/1

N2 - A multiparticle spin-trap isomeric state having a half-life of 179(4) ns and lying 2601 keV above the yrast 10+ state in 156Lu has been discovered. The 156Lu nuclei were produced by bombarding isotopically enriched 106Cd targets with beams of 58Ni ions, separated in flight using the gas-filled separator RITU and their decays were measured using the GREAT spectrometer. Analysis of the main decay path that populates yrast states observed previously suggests a spin-parity assignment of 19− for the isomeric state, which is consistent with isomeric states identified in the N = 85 isotones. Comparison with other decay paths in 156Lu indicates that the [πh−111/2⊗νh9/2]10+ state at the bottom of the yrast sequence is likely to be the α-decaying isomeric state, with the [πh−111/2⊗νf7/2]9+ state lying 62 keV above it. The relative ordering of the lowest-lying 9+ and 10+ states is inverted in 156Lu compared with its odd-odd isotones.

AB - A multiparticle spin-trap isomeric state having a half-life of 179(4) ns and lying 2601 keV above the yrast 10+ state in 156Lu has been discovered. The 156Lu nuclei were produced by bombarding isotopically enriched 106Cd targets with beams of 58Ni ions, separated in flight using the gas-filled separator RITU and their decays were measured using the GREAT spectrometer. Analysis of the main decay path that populates yrast states observed previously suggests a spin-parity assignment of 19− for the isomeric state, which is consistent with isomeric states identified in the N = 85 isotones. Comparison with other decay paths in 156Lu indicates that the [πh−111/2⊗νh9/2]10+ state at the bottom of the yrast sequence is likely to be the α-decaying isomeric state, with the [πh−111/2⊗νf7/2]9+ state lying 62 keV above it. The relative ordering of the lowest-lying 9+ and 10+ states is inverted in 156Lu compared with its odd-odd isotones.

U2 - 10.1103/PhysRevC.98.024302

DO - 10.1103/PhysRevC.98.024302

M3 - Article

VL - 98

JO - Physical Review C

JF - Physical Review C

SN - 2469-9985

IS - 2

M1 - 024302

ER -

Lewis MC, Parr E, Page RD, McPeake C, Joss DT, Ali FA et al. Decay of a 19- isomeric state in 156Lu. Physical Review C. 2018 Aug 1;98(2). 024302. https://doi.org/10.1103/PhysRevC.98.024302