Delayed or absent π(h11/2)2 alignment in 111Xe

L. Capponi, J.F. Smith, P. Ruotsalainen, C. Scholey, P. Rahkila, L. Bianco, A.J. J. Boston, H.C. Boston, D.M. Cullen, X. Derkx, M.C. Drummond, T. Grahn, P.T. Greenlees, L. Grocutt, B. Hadinia, U. Jakobsson, D.T. Joss, R. Julin, S. Juutinen, M. LabicheM. Leino, K.G. Leach, C. McPeake, K.F. Mulholland, P. Nieminen, David O'Donnell, E.S. Paul, P. Peura, M. Sandzelius, J. Saren, B. Saygi, J. Sorri, S. Stolze, A. Thornthwaite, M.J. Taylor, J. Uusitalo

Research output: Contribution to journalArticle

16 Downloads (Pure)

Abstract

Excited states have been identified in the very neutron-deficient N = Z + 3 nucleus 111Xe for the first time, using the 58Ni(58Ni,αn) heavy-ion fusion-evaporation reaction. Gamma-ray transitions have been unambiguously assigned to 111Xe by correlation with the characteristic 111Xe→107Te→103Sn α-decay chain using the method of recoil-decay tagging. Inspection of  γγ coincidence data has shown that five of the transitions form a rotational-like sequence. Excitation-energy systematics suggest that the sequence could be the favored signature partner of a band built on an h11/2 neutron. Aligned angular momenta of states in the band have been compared to analogous bands in neighboring xenon isotopes. The aligned angular momenta for the 111Xe band are constant over the range of observed rotational frequencies, suggesting that the first π(h11/2)2 alignment is either delayed or absent. It is speculated that the alignment of h11/2 protons in the presence of neutrons in near-identical h11/2 orbitals may be affected by neutron-proton interactions, or by the onset of octupole correlations.
Original languageEnglish
Article number014313
JournalPhysical Review C
Volume101
Issue number1
DOIs
Publication statusPublished - 21 Jan 2020

Fingerprint

alignment
neutrons
angular momentum
xenon isotopes
protons
decay
marking
excitation
inspection
heavy ions
fusion
signatures
evaporation
gamma rays
orbitals
nuclei
interactions
energy

Cite this

Capponi, L., Smith, J. F., Ruotsalainen, P., Scholey, C., Rahkila, P., Bianco, L., ... Uusitalo, J. (2020). Delayed or absent π(h11/2)2 alignment in 111Xe. Physical Review C, 101(1), [014313]. https://doi.org/10.1103/PhysRevC.101.014313
Capponi, L. ; Smith, J.F. ; Ruotsalainen, P. ; Scholey, C. ; Rahkila, P. ; Bianco, L. ; J. Boston, A.J. ; Boston, H.C. ; Cullen, D.M. ; Derkx, X. ; Drummond, M.C. ; Grahn, T. ; Greenlees, P.T. ; Grocutt, L. ; Hadinia, B. ; Jakobsson, U. ; Joss, D.T. ; Julin, R. ; Juutinen, S. ; Labiche, M. ; Leino, M. ; Leach, K.G. ; McPeake, C. ; Mulholland, K.F. ; Nieminen, P. ; O'Donnell, David ; Paul, E.S. ; Peura, P. ; Sandzelius, M. ; Saren, J. ; Saygi, B. ; Sorri, J. ; Stolze, S. ; Thornthwaite, A. ; Taylor, M.J. ; Uusitalo, J. / Delayed or absent π(h11/2)2 alignment in 111Xe. In: Physical Review C. 2020 ; Vol. 101, No. 1.
@article{4584868dd6714da1b9e63ad832ffd1ee,
title = "Delayed or absent π(h11/2)2 alignment in 111Xe",
abstract = "Excited states have been identified in the very neutron-deficient N = Z + 3 nucleus 111Xe for the first time, using the 58Ni(58Ni,αn) heavy-ion fusion-evaporation reaction. Gamma-ray transitions have been unambiguously assigned to 111Xe by correlation with the characteristic 111Xe→107Te→103Sn α-decay chain using the method of recoil-decay tagging. Inspection of  γγ coincidence data has shown that five of the transitions form a rotational-like sequence. Excitation-energy systematics suggest that the sequence could be the favored signature partner of a band built on an h11/2 neutron. Aligned angular momenta of states in the band have been compared to analogous bands in neighboring xenon isotopes. The aligned angular momenta for the 111Xe band are constant over the range of observed rotational frequencies, suggesting that the first π(h11/2)2 alignment is either delayed or absent. It is speculated that the alignment of h11/2 protons in the presence of neutrons in near-identical h11/2 orbitals may be affected by neutron-proton interactions, or by the onset of octupole correlations.",
author = "L. Capponi and J.F. Smith and P. Ruotsalainen and C. Scholey and P. Rahkila and L. Bianco and {J. Boston}, A.J. and H.C. Boston and D.M. Cullen and X. Derkx and M.C. Drummond and T. Grahn and P.T. Greenlees and L. Grocutt and B. Hadinia and U. Jakobsson and D.T. Joss and R. Julin and S. Juutinen and M. Labiche and M. Leino and K.G. Leach and C. McPeake and K.F. Mulholland and P. Nieminen and David O'Donnell and E.S. Paul and P. Peura and M. Sandzelius and J. Saren and B. Saygi and J. Sorri and S. Stolze and A. Thornthwaite and M.J. Taylor and J. Uusitalo",
year = "2020",
month = "1",
day = "21",
doi = "10.1103/PhysRevC.101.014313",
language = "English",
volume = "101",
journal = "Physical Review C",
issn = "2469-9985",
publisher = "American Physical Society",
number = "1",

}

Capponi, L, Smith, JF, Ruotsalainen, P, Scholey, C, Rahkila, P, Bianco, L, J. Boston, AJ, Boston, HC, Cullen, DM, Derkx, X, Drummond, MC, Grahn, T, Greenlees, PT, Grocutt, L, Hadinia, B, Jakobsson, U, Joss, DT, Julin, R, Juutinen, S, Labiche, M, Leino, M, Leach, KG, McPeake, C, Mulholland, KF, Nieminen, P, O'Donnell, D, Paul, ES, Peura, P, Sandzelius, M, Saren, J, Saygi, B, Sorri, J, Stolze, S, Thornthwaite, A, Taylor, MJ & Uusitalo, J 2020, 'Delayed or absent π(h11/2)2 alignment in 111Xe', Physical Review C, vol. 101, no. 1, 014313. https://doi.org/10.1103/PhysRevC.101.014313

Delayed or absent π(h11/2)2 alignment in 111Xe. / Capponi, L.; Smith, J.F. ; Ruotsalainen, P.; Scholey, C.; Rahkila, P.; Bianco, L.; J. Boston, A.J.; Boston, H.C.; Cullen, D.M.; Derkx, X.; Drummond, M.C.; Grahn, T.; Greenlees, P.T.; Grocutt, L.; Hadinia, B.; Jakobsson, U.; Joss, D.T.; Julin, R.; Juutinen, S.; Labiche, M.; Leino, M.; Leach, K.G.; McPeake, C.; Mulholland, K.F. ; Nieminen, P.; O'Donnell, David; Paul, E.S.; Peura, P.; Sandzelius, M.; Saren, J.; Saygi, B.; Sorri, J.; Stolze, S.; Thornthwaite, A.; Taylor, M.J.; Uusitalo, J.

In: Physical Review C, Vol. 101, No. 1, 014313, 21.01.2020.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Delayed or absent π(h11/2)2 alignment in 111Xe

AU - Capponi, L.

AU - Smith, J.F.

AU - Ruotsalainen, P.

AU - Scholey, C.

AU - Rahkila, P.

AU - Bianco, L.

AU - J. Boston, A.J.

AU - Boston, H.C.

AU - Cullen, D.M.

AU - Derkx, X.

AU - Drummond, M.C.

AU - Grahn, T.

AU - Greenlees, P.T.

AU - Grocutt, L.

AU - Hadinia, B.

AU - Jakobsson, U.

AU - Joss, D.T.

AU - Julin, R.

AU - Juutinen, S.

AU - Labiche, M.

AU - Leino, M.

AU - Leach, K.G.

AU - McPeake, C.

AU - Mulholland, K.F.

AU - Nieminen, P.

AU - O'Donnell, David

AU - Paul, E.S.

AU - Peura, P.

AU - Sandzelius, M.

AU - Saren, J.

AU - Saygi, B.

AU - Sorri, J.

AU - Stolze, S.

AU - Thornthwaite, A.

AU - Taylor, M.J.

AU - Uusitalo, J.

PY - 2020/1/21

Y1 - 2020/1/21

N2 - Excited states have been identified in the very neutron-deficient N = Z + 3 nucleus 111Xe for the first time, using the 58Ni(58Ni,αn) heavy-ion fusion-evaporation reaction. Gamma-ray transitions have been unambiguously assigned to 111Xe by correlation with the characteristic 111Xe→107Te→103Sn α-decay chain using the method of recoil-decay tagging. Inspection of  γγ coincidence data has shown that five of the transitions form a rotational-like sequence. Excitation-energy systematics suggest that the sequence could be the favored signature partner of a band built on an h11/2 neutron. Aligned angular momenta of states in the band have been compared to analogous bands in neighboring xenon isotopes. The aligned angular momenta for the 111Xe band are constant over the range of observed rotational frequencies, suggesting that the first π(h11/2)2 alignment is either delayed or absent. It is speculated that the alignment of h11/2 protons in the presence of neutrons in near-identical h11/2 orbitals may be affected by neutron-proton interactions, or by the onset of octupole correlations.

AB - Excited states have been identified in the very neutron-deficient N = Z + 3 nucleus 111Xe for the first time, using the 58Ni(58Ni,αn) heavy-ion fusion-evaporation reaction. Gamma-ray transitions have been unambiguously assigned to 111Xe by correlation with the characteristic 111Xe→107Te→103Sn α-decay chain using the method of recoil-decay tagging. Inspection of  γγ coincidence data has shown that five of the transitions form a rotational-like sequence. Excitation-energy systematics suggest that the sequence could be the favored signature partner of a band built on an h11/2 neutron. Aligned angular momenta of states in the band have been compared to analogous bands in neighboring xenon isotopes. The aligned angular momenta for the 111Xe band are constant over the range of observed rotational frequencies, suggesting that the first π(h11/2)2 alignment is either delayed or absent. It is speculated that the alignment of h11/2 protons in the presence of neutrons in near-identical h11/2 orbitals may be affected by neutron-proton interactions, or by the onset of octupole correlations.

U2 - 10.1103/PhysRevC.101.014313

DO - 10.1103/PhysRevC.101.014313

M3 - Article

VL - 101

JO - Physical Review C

JF - Physical Review C

SN - 2469-9985

IS - 1

M1 - 014313

ER -

Capponi L, Smith JF, Ruotsalainen P, Scholey C, Rahkila P, Bianco L et al. Delayed or absent π(h11/2)2 alignment in 111Xe. Physical Review C. 2020 Jan 21;101(1). 014313. https://doi.org/10.1103/PhysRevC.101.014313