gamma-ray spectroscopy of neutron-deficient Ce-123

J. F. Smith, L. J. Angus, E. S. Paul, C. J. Chiara, M. P. Carpenter, H. J. Chantler, P. T. W. Choy, C. N. Davids, M. Devlin, D. B. Fossan, S. J. Freeman, R. V. F. Janssens, N. S. Kelsall, T. Koike, D. R. LaFosse, D. G. Sarantites, D. Seweryniak, K. Starosta, R. Wadsworth, A. N. Wilson

Research output: Contribution to journalArticle

Abstract

Excited states have been identified in the very neutron-deficient Z=58 nucleus 123Ce. This is the most neutron-deficient odd-A cerium isotope in which excited states have been identified. The states have been unambiguously assigned to 123Ce by detecting de-excitation γ rays in coincidence with evaporated charged particles and neutrons. Three rotational bands, each consisting of at least eight E2 transitions, have been observed. The bands have tentatively been assigned to be based on neutrons in g7/2 and h11/2 orbitals. Two of the bands have been assigned to be signature partners, although no interband transitions have been observed. The aligned angular momenta of the bands have been studied in comparison with neighboring nuclei and with the results of Woods-Saxon cranking calculations. Observation of the deformation-dependent π(h11/2)2 quasiparticle alignment at 0.36 MeV/ℏ in each of the bands suggests a quadrupole deformation of β2≃0.3, in good agreement with theoretical predictions for the suggested possible configuration assignments.
Original languageEnglish
JournalPhysical Review C
Volume86
Issue number3
DOIs
Publication statusPublished - 4 Sep 2012

Cite this

Smith, J. F., Angus, L. J., Paul, E. S., Chiara, C. J., Carpenter, M. P., Chantler, H. J., ... Wilson, A. N. (2012). gamma-ray spectroscopy of neutron-deficient Ce-123. Physical Review C, 86(3). https://doi.org/10.1103/PhysRevC.86.034303
Smith, J. F. ; Angus, L. J. ; Paul, E. S. ; Chiara, C. J. ; Carpenter, M. P. ; Chantler, H. J. ; Choy, P. T. W. ; Davids, C. N. ; Devlin, M. ; Fossan, D. B. ; Freeman, S. J. ; Janssens, R. V. F. ; Kelsall, N. S. ; Koike, T. ; LaFosse, D. R. ; Sarantites, D. G. ; Seweryniak, D. ; Starosta, K. ; Wadsworth, R. ; Wilson, A. N. / gamma-ray spectroscopy of neutron-deficient Ce-123. In: Physical Review C. 2012 ; Vol. 86, No. 3.
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abstract = "Excited states have been identified in the very neutron-deficient Z=58 nucleus 123Ce. This is the most neutron-deficient odd-A cerium isotope in which excited states have been identified. The states have been unambiguously assigned to 123Ce by detecting de-excitation γ rays in coincidence with evaporated charged particles and neutrons. Three rotational bands, each consisting of at least eight E2 transitions, have been observed. The bands have tentatively been assigned to be based on neutrons in g7/2 and h11/2 orbitals. Two of the bands have been assigned to be signature partners, although no interband transitions have been observed. The aligned angular momenta of the bands have been studied in comparison with neighboring nuclei and with the results of Woods-Saxon cranking calculations. Observation of the deformation-dependent π(h11/2)2 quasiparticle alignment at 0.36 MeV/ℏ in each of the bands suggests a quadrupole deformation of β2≃0.3, in good agreement with theoretical predictions for the suggested possible configuration assignments.",
author = "Smith, {J. F.} and Angus, {L. J.} and Paul, {E. S.} and Chiara, {C. J.} and Carpenter, {M. P.} and Chantler, {H. J.} and Choy, {P. T. W.} and Davids, {C. N.} and M. Devlin and Fossan, {D. B.} and Freeman, {S. J.} and Janssens, {R. V. F.} and Kelsall, {N. S.} and T. Koike and LaFosse, {D. R.} and Sarantites, {D. G.} and D. Seweryniak and K. Starosta and R. Wadsworth and Wilson, {A. N.}",
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Smith, JF, Angus, LJ, Paul, ES, Chiara, CJ, Carpenter, MP, Chantler, HJ, Choy, PTW, Davids, CN, Devlin, M, Fossan, DB, Freeman, SJ, Janssens, RVF, Kelsall, NS, Koike, T, LaFosse, DR, Sarantites, DG, Seweryniak, D, Starosta, K, Wadsworth, R & Wilson, AN 2012, 'gamma-ray spectroscopy of neutron-deficient Ce-123' Physical Review C, vol. 86, no. 3. https://doi.org/10.1103/PhysRevC.86.034303

gamma-ray spectroscopy of neutron-deficient Ce-123. / Smith, J. F.; Angus, L. J.; Paul, E. S.; Chiara, C. J.; Carpenter, M. P.; Chantler, H. J.; Choy, P. T. W.; Davids, C. N.; Devlin, M.; Fossan, D. B.; Freeman, S. J.; Janssens, R. V. F.; Kelsall, N. S.; Koike, T.; LaFosse, D. R.; Sarantites, D. G.; Seweryniak, D.; Starosta, K.; Wadsworth, R.; Wilson, A. N.

In: Physical Review C, Vol. 86, No. 3, 04.09.2012.

Research output: Contribution to journalArticle

TY - JOUR

T1 - gamma-ray spectroscopy of neutron-deficient Ce-123

AU - Smith, J. F.

AU - Angus, L. J.

AU - Paul, E. S.

AU - Chiara, C. J.

AU - Carpenter, M. P.

AU - Chantler, H. J.

AU - Choy, P. T. W.

AU - Davids, C. N.

AU - Devlin, M.

AU - Fossan, D. B.

AU - Freeman, S. J.

AU - Janssens, R. V. F.

AU - Kelsall, N. S.

AU - Koike, T.

AU - LaFosse, D. R.

AU - Sarantites, D. G.

AU - Seweryniak, D.

AU - Starosta, K.

AU - Wadsworth, R.

AU - Wilson, A. N.

PY - 2012/9/4

Y1 - 2012/9/4

N2 - Excited states have been identified in the very neutron-deficient Z=58 nucleus 123Ce. This is the most neutron-deficient odd-A cerium isotope in which excited states have been identified. The states have been unambiguously assigned to 123Ce by detecting de-excitation γ rays in coincidence with evaporated charged particles and neutrons. Three rotational bands, each consisting of at least eight E2 transitions, have been observed. The bands have tentatively been assigned to be based on neutrons in g7/2 and h11/2 orbitals. Two of the bands have been assigned to be signature partners, although no interband transitions have been observed. The aligned angular momenta of the bands have been studied in comparison with neighboring nuclei and with the results of Woods-Saxon cranking calculations. Observation of the deformation-dependent π(h11/2)2 quasiparticle alignment at 0.36 MeV/ℏ in each of the bands suggests a quadrupole deformation of β2≃0.3, in good agreement with theoretical predictions for the suggested possible configuration assignments.

AB - Excited states have been identified in the very neutron-deficient Z=58 nucleus 123Ce. This is the most neutron-deficient odd-A cerium isotope in which excited states have been identified. The states have been unambiguously assigned to 123Ce by detecting de-excitation γ rays in coincidence with evaporated charged particles and neutrons. Three rotational bands, each consisting of at least eight E2 transitions, have been observed. The bands have tentatively been assigned to be based on neutrons in g7/2 and h11/2 orbitals. Two of the bands have been assigned to be signature partners, although no interband transitions have been observed. The aligned angular momenta of the bands have been studied in comparison with neighboring nuclei and with the results of Woods-Saxon cranking calculations. Observation of the deformation-dependent π(h11/2)2 quasiparticle alignment at 0.36 MeV/ℏ in each of the bands suggests a quadrupole deformation of β2≃0.3, in good agreement with theoretical predictions for the suggested possible configuration assignments.

U2 - 10.1103/PhysRevC.86.034303

DO - 10.1103/PhysRevC.86.034303

M3 - Article

VL - 86

JO - Physical Review C

JF - Physical Review C

SN - 2469-9985

IS - 3

ER -

Smith JF, Angus LJ, Paul ES, Chiara CJ, Carpenter MP, Chantler HJ et al. gamma-ray spectroscopy of neutron-deficient Ce-123. Physical Review C. 2012 Sep 4;86(3). https://doi.org/10.1103/PhysRevC.86.034303