Characterization of octupole-type structures in Th 221

W. Reviol; R. V.F. Janssens; S. Frauendorf; D. G. Sarantites; M. P. Carpenter; X. Chen; C. J. Chiara; D. J. Hartley; K. Hauschild; T. Lauritsen; A. Lopez-Martens; M. Montero; O. L. Pechenaya; D. Seweryniak; J. B. Snyder; S. Zhu

doi:10.1103/PhysRevC.90.044318

Characterization of octupole-type structures in Th 221

W. Reviol
, R. V.F. Janssens
, S. Frauendorf
, D. G. Sarantites
, M. P. Carpenter
, X. Chen
, C. J. Chiara
, D. J. Hartley
, K. Hauschild
, T. Lauritsen
, A. Lopez-Martens
, M. Montero
, O. L. Pechenaya
, D. Seweryniak
, J. B. Snyder
, S. Zhu

Research output: Contribution to journal › Article › peer-review

17 Scopus citations

Abstract

A detailed level scheme for Th221 has been established in an experiment using the O18+207Pb reaction at 96 MeV. The evaporation residues from this fissile system were selected with the HERCULES detector array and residue-gated γ rays were measured with Gammasphere. Three band structures of interlinked, alternating-parity levels are observed, two of which are non-yrast. In addition, several high-lying excitations are found. The yrast band is seen up to spin-parity 37/2- and 39/2+, beyond which a high-spin feeding transition is observed. The non-yrast sequences are interpreted as parity-doublet structures, based on a configuration similar to that of the yrast band in Th223 (K=5/2). The key properties of even-odd nuclei in this mass region [B(E1)/B(E2) and B(M1)/B(E2) ratios, spin alignments, parity splittings] are reviewed.

Original language	English
Article number	044318
Journal	Physical Review C - Nuclear Physics
Volume	90
Issue number	4
DOIs	https://doi.org/10.1103/PhysRevC.90.044318
State	Published - Oct 21 2014

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Reviol, W., Janssens, R. V. F., Frauendorf, S., Sarantites, D. G., Carpenter, M. P., Chen, X., Chiara, C. J., Hartley, D. J., Hauschild, K., Lauritsen, T., Lopez-Martens, A., Montero, M., Pechenaya, O. L., Seweryniak, D., Snyder, J. B., & Zhu, S. (2014). Characterization of octupole-type structures in Th 221. Physical Review C - Nuclear Physics, 90(4), Article 044318. https://doi.org/10.1103/PhysRevC.90.044318

@article{1f6af2399bdb4ae4be3d56ae7d4b7191,

title = "Characterization of octupole-type structures in Th 221",

abstract = "A detailed level scheme for Th221 has been established in an experiment using the O18+207Pb reaction at 96 MeV. The evaporation residues from this fissile system were selected with the HERCULES detector array and residue-gated γ rays were measured with Gammasphere. Three band structures of interlinked, alternating-parity levels are observed, two of which are non-yrast. In addition, several high-lying excitations are found. The yrast band is seen up to spin-parity 37/2- and 39/2+, beyond which a high-spin feeding transition is observed. The non-yrast sequences are interpreted as parity-doublet structures, based on a configuration similar to that of the yrast band in Th223 (K=5/2). The key properties of even-odd nuclei in this mass region [B(E1)/B(E2) and B(M1)/B(E2) ratios, spin alignments, parity splittings] are reviewed.",

author = "W. Reviol and Janssens, \{R. V.F.\} and S. Frauendorf and Sarantites, \{D. G.\} and Carpenter, \{M. P.\} and X. Chen and Chiara, \{C. J.\} and Hartley, \{D. J.\} and K. Hauschild and T. Lauritsen and A. Lopez-Martens and M. Montero and Pechenaya, \{O. L.\} and D. Seweryniak and Snyder, \{J. B.\} and S. Zhu",

note = "Publisher Copyright: {\textcopyright} 2014 American Physical Society.",

year = "2014",

month = oct,

day = "21",

doi = "10.1103/PhysRevC.90.044318",

language = "English",

volume = "90",

journal = "Physical Review C - Nuclear Physics",

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Reviol, W, Janssens, RVF, Frauendorf, S, Sarantites, DG, Carpenter, MP, Chen, X, Chiara, CJ, Hartley, DJ, Hauschild, K, Lauritsen, T, Lopez-Martens, A, Montero, M, Pechenaya, OL, Seweryniak, D, Snyder, JB & Zhu, S 2014, 'Characterization of octupole-type structures in Th 221', Physical Review C - Nuclear Physics, vol. 90, no. 4, 044318. https://doi.org/10.1103/PhysRevC.90.044318

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T1 - Characterization of octupole-type structures in Th 221

AU - Reviol, W.

AU - Janssens, R. V.F.

AU - Frauendorf, S.

AU - Sarantites, D. G.

AU - Carpenter, M. P.

AU - Chen, X.

AU - Chiara, C. J.

AU - Hartley, D. J.

AU - Hauschild, K.

AU - Lauritsen, T.

AU - Lopez-Martens, A.

AU - Montero, M.

AU - Pechenaya, O. L.

AU - Seweryniak, D.

AU - Snyder, J. B.

AU - Zhu, S.

PY - 2014/10/21

Y1 - 2014/10/21

N2 - A detailed level scheme for Th221 has been established in an experiment using the O18+207Pb reaction at 96 MeV. The evaporation residues from this fissile system were selected with the HERCULES detector array and residue-gated γ rays were measured with Gammasphere. Three band structures of interlinked, alternating-parity levels are observed, two of which are non-yrast. In addition, several high-lying excitations are found. The yrast band is seen up to spin-parity 37/2- and 39/2+, beyond which a high-spin feeding transition is observed. The non-yrast sequences are interpreted as parity-doublet structures, based on a configuration similar to that of the yrast band in Th223 (K=5/2). The key properties of even-odd nuclei in this mass region [B(E1)/B(E2) and B(M1)/B(E2) ratios, spin alignments, parity splittings] are reviewed.

AB - A detailed level scheme for Th221 has been established in an experiment using the O18+207Pb reaction at 96 MeV. The evaporation residues from this fissile system were selected with the HERCULES detector array and residue-gated γ rays were measured with Gammasphere. Three band structures of interlinked, alternating-parity levels are observed, two of which are non-yrast. In addition, several high-lying excitations are found. The yrast band is seen up to spin-parity 37/2- and 39/2+, beyond which a high-spin feeding transition is observed. The non-yrast sequences are interpreted as parity-doublet structures, based on a configuration similar to that of the yrast band in Th223 (K=5/2). The key properties of even-odd nuclei in this mass region [B(E1)/B(E2) and B(M1)/B(E2) ratios, spin alignments, parity splittings] are reviewed.

UR - https://www.scopus.com/pages/publications/84908439517

U2 - 10.1103/PhysRevC.90.044318

DO - 10.1103/PhysRevC.90.044318

M3 - Article

AN - SCOPUS:84908439517

SN - 0556-2813

VL - 90

JO - Physical Review C - Nuclear Physics

JF - Physical Review C - Nuclear Physics

IS - 4

M1 - 044318

ER -

Characterization of octupole-type structures in Th 221

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