Parity doubling in Th219 and the onset of collectivity above N=126

W. Reviol; D. G. Sarantites; C. J. Chiara; M. Montero; R. V.F. Janssens; M. P. Carpenter; T. L. Khoo; T. Lauritsen; C. J. Lister; D. Seweryniak; S. Zhu; O. L. Pechenaya; S. G. Frauendorf

doi:10.1103/PhysRevC.80.011304

Parity doubling in Th219 and the onset of collectivity above N=126

W. Reviol, D. G. Sarantites, C. J. Chiara, M. Montero, R. V.F. Janssens, M. P. Carpenter, T. L. Khoo, T. Lauritsen, C. J. Lister, D. Seweryniak, S. Zhu, O. L. Pechenaya, S. G. Frauendorf

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Abstract

Excited states in Th219 have been observed for the first time in an experiment using the Mg26+Pt198 reaction and evaporation-residue-gated γ-ray spectroscopy. Two structures of interlinked alternating-parity levels with simplex quantum numbers s=±i are observed, reminiscent of similar sequences in heavier odd-mass isotopes, but only three mass units away from the N=126 neutron closed shell. The emergence of quadrupole-octupole collectivity in this mass region and the trend for parity-doublet bands are discussed.

Original language	English
Article number	011304
Journal	Physical Review C - Nuclear Physics
Volume	80
Issue number	1
DOIs	https://doi.org/10.1103/PhysRevC.80.011304
State	Published - Aug 6 2009

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Reviol, W., Sarantites, D. G., Chiara, C. J., Montero, M., Janssens, R. V. F., Carpenter, M. P., Khoo, T. L., Lauritsen, T., Lister, C. J., Seweryniak, D., Zhu, S., Pechenaya, O. L., & Frauendorf, S. G. (2009). Parity doubling in Th219 and the onset of collectivity above N=126. Physical Review C - Nuclear Physics, 80(1), Article 011304. https://doi.org/10.1103/PhysRevC.80.011304

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abstract = "Excited states in Th219 have been observed for the first time in an experiment using the Mg26+Pt198 reaction and evaporation-residue-gated γ-ray spectroscopy. Two structures of interlinked alternating-parity levels with simplex quantum numbers s=±i are observed, reminiscent of similar sequences in heavier odd-mass isotopes, but only three mass units away from the N=126 neutron closed shell. The emergence of quadrupole-octupole collectivity in this mass region and the trend for parity-doublet bands are discussed.",

author = "W. Reviol and Sarantites, {D. G.} and Chiara, {C. J.} and M. Montero and Janssens, {R. V.F.} and Carpenter, {M. P.} and Khoo, {T. L.} and T. Lauritsen and Lister, {C. J.} and D. Seweryniak and S. Zhu and Pechenaya, {O. L.} and Frauendorf, {S. G.}",

year = "2009",

month = aug,

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doi = "10.1103/PhysRevC.80.011304",

language = "English",

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T1 - Parity doubling in Th219 and the onset of collectivity above N=126

AU - Reviol, W.

AU - Sarantites, D. G.

AU - Chiara, C. J.

AU - Montero, M.

AU - Janssens, R. V.F.

AU - Carpenter, M. P.

AU - Khoo, T. L.

AU - Lauritsen, T.

AU - Lister, C. J.

AU - Seweryniak, D.

AU - Zhu, S.

AU - Pechenaya, O. L.

AU - Frauendorf, S. G.

PY - 2009/8/6

Y1 - 2009/8/6

N2 - Excited states in Th219 have been observed for the first time in an experiment using the Mg26+Pt198 reaction and evaporation-residue-gated γ-ray spectroscopy. Two structures of interlinked alternating-parity levels with simplex quantum numbers s=±i are observed, reminiscent of similar sequences in heavier odd-mass isotopes, but only three mass units away from the N=126 neutron closed shell. The emergence of quadrupole-octupole collectivity in this mass region and the trend for parity-doublet bands are discussed.

AB - Excited states in Th219 have been observed for the first time in an experiment using the Mg26+Pt198 reaction and evaporation-residue-gated γ-ray spectroscopy. Two structures of interlinked alternating-parity levels with simplex quantum numbers s=±i are observed, reminiscent of similar sequences in heavier odd-mass isotopes, but only three mass units away from the N=126 neutron closed shell. The emergence of quadrupole-octupole collectivity in this mass region and the trend for parity-doublet bands are discussed.

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U2 - 10.1103/PhysRevC.80.011304

DO - 10.1103/PhysRevC.80.011304

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VL - 80

JO - Physical Review C - Nuclear Physics

JF - Physical Review C - Nuclear Physics

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ER -

Parity doubling in Th219 and the onset of collectivity above N=126

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