First observation of very neutron-deficient 122Ce

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

doi:10.1016/j.physletb.2005.08.035

First observation of very neutron-deficient ¹²²Ce

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

^*Corresponding author for this work

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

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Abstract

Excited states have been identified in the very neutron-deficient ¹²²Ce nucleus. This is the first observation of this nucleus and its excited states. The ground-state rotational band has been observed up to spin 14 ℏ. The band has been assigned to ¹²²Ce by detecting gamma rays in coincidence with evaporated charged particles and neutrons. The E(2 ₁⁺) value suggests a rather large ground-state deformation of β₂ = 0.35, in good agreement with Hartree-Fock-Bogoliubov (HFB) mean-field calculations. The aligned angular momentum of the band has been studied and is compared with those of the neighboring even-even cerium isotopes, and to Woods-Saxon cranking calculations. The non-observation of the π(h_11/2)² alignment until at least 0.4 MeV/ℏ is consistent with the extracted value of β₂.

Original language	English
Pages (from-to)	203-211
Number of pages	9
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	625
Issue number	3-4
DOIs	https://doi.org/10.1016/j.physletb.2005.08.035
Publication status	Published - 13 Oct 2005

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Smith, J. F., Chiara, C. J., Carpenter, M. P., Chantler, H. J., Choy, P. T. W., Davids, C. N., Devlin, M., Durell, J. L., Fossan, D. B., Freeman, S. J., Janssens, R. V. F., Kelsall, N. S., Koike, T., LaFosse, D. R., Paul, E. S., Reiter, P., Sarantites, D. G., Seweryniak, D., Starosta, K., ... Heenen, P. H. (2005). First observation of very neutron-deficient ¹²²Ce. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 625(3-4), 203-211. https://doi.org/10.1016/j.physletb.2005.08.035

@article{71dd893ef8d641c88650446a8d6e2e38,

title = "First observation of very neutron-deficient 122Ce",

abstract = "Excited states have been identified in the very neutron-deficient 122Ce nucleus. This is the first observation of this nucleus and its excited states. The ground-state rotational band has been observed up to spin 14 ℏ. The band has been assigned to 122Ce by detecting gamma rays in coincidence with evaporated charged particles and neutrons. The E(2 1+) value suggests a rather large ground-state deformation of β2 = 0.35, in good agreement with Hartree-Fock-Bogoliubov (HFB) mean-field calculations. The aligned angular momentum of the band has been studied and is compared with those of the neighboring even-even cerium isotopes, and to Woods-Saxon cranking calculations. The non-observation of the π(h11/2)2 alignment until at least 0.4 MeV/ℏ is consistent with the extracted value of β2.",

author = "Smith, {J. F.} 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 Durell, {J. L.} 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 Paul, {E. S.} and P. Reiter and Sarantites, {D. G.} and D. Seweryniak and K. Starosta and R. Wadsworth and Wilson, {A. N.} and Heenen, {P. H.}",

year = "2005",

month = oct,

day = "13",

doi = "10.1016/j.physletb.2005.08.035",

language = "English",

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journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",

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Smith, JF, Chiara, CJ, Carpenter, MP, Chantler, HJ, Choy, PTW, Davids, CN, Devlin, M, Durell, JL, Fossan, DB, Freeman, SJ, Janssens, RVF, Kelsall, NS, Koike, T, LaFosse, DR, Paul, ES, Reiter, P, Sarantites, DG, Seweryniak, D, Starosta, K, Wadsworth, R, Wilson, AN & Heenen, PH 2005, 'First observation of very neutron-deficient ¹²²Ce', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 625, no. 3-4, pp. 203-211. https://doi.org/10.1016/j.physletb.2005.08.035

TY - JOUR

T1 - First observation of very neutron-deficient 122Ce

AU - Smith, J. F.

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 - Durell, J. L.

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 - Paul, E. S.

AU - Reiter, P.

AU - Sarantites, D. G.

AU - Seweryniak, D.

AU - Starosta, K.

AU - Wadsworth, R.

AU - Wilson, A. N.

AU - Heenen, P. H.

PY - 2005/10/13

Y1 - 2005/10/13

N2 - Excited states have been identified in the very neutron-deficient 122Ce nucleus. This is the first observation of this nucleus and its excited states. The ground-state rotational band has been observed up to spin 14 ℏ. The band has been assigned to 122Ce by detecting gamma rays in coincidence with evaporated charged particles and neutrons. The E(2 1+) value suggests a rather large ground-state deformation of β2 = 0.35, in good agreement with Hartree-Fock-Bogoliubov (HFB) mean-field calculations. The aligned angular momentum of the band has been studied and is compared with those of the neighboring even-even cerium isotopes, and to Woods-Saxon cranking calculations. The non-observation of the π(h11/2)2 alignment until at least 0.4 MeV/ℏ is consistent with the extracted value of β2.

AB - Excited states have been identified in the very neutron-deficient 122Ce nucleus. This is the first observation of this nucleus and its excited states. The ground-state rotational band has been observed up to spin 14 ℏ. The band has been assigned to 122Ce by detecting gamma rays in coincidence with evaporated charged particles and neutrons. The E(2 1+) value suggests a rather large ground-state deformation of β2 = 0.35, in good agreement with Hartree-Fock-Bogoliubov (HFB) mean-field calculations. The aligned angular momentum of the band has been studied and is compared with those of the neighboring even-even cerium isotopes, and to Woods-Saxon cranking calculations. The non-observation of the π(h11/2)2 alignment until at least 0.4 MeV/ℏ is consistent with the extracted value of β2.

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U2 - 10.1016/j.physletb.2005.08.035

DO - 10.1016/j.physletb.2005.08.035

M3 - Article

SN - 0370-2693

VL - 625

SP - 203

EP - 211

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

IS - 3-4

ER -

First observation of very neutron-deficient ¹²²Ce

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