Isospin and deformation studies in the odd-odd N=Z nucleus Co54

D. Rudolph; L. L. Andersson; R. Bengtsson; J. Ekman; O. Erten; C. Fahlander; E. K. Johansson; I. Ragnarsson; C. Andreoiu; M. A. Bentley; M. P. Carpenter; R. J. Charity; R. M. Clark; P. Fallon; A. O. MacChiavelli; W. Reviol; D. G. Sarantites; D. Seweryniak; C. E. Svensson; S. J. Williams

doi:10.1103/PhysRevC.82.054309

Isospin and deformation studies in the odd-odd N=Z nucleus Co54

D. Rudolph, L. L. Andersson, R. Bengtsson, J. Ekman, O. Erten, C. Fahlander, E. K. Johansson, I. Ragnarsson, C. Andreoiu, M. A. Bentley, M. P. Carpenter, R. J. Charity, R. M. Clark, P. Fallon, A. O. MacChiavelli, W. Reviol, D. G. Sarantites, D. Seweryniak, C. E. Svensson, S. J. Williams

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Abstract

High-spin states in the odd-odd N=Z nucleus Co54 have been investigated by the fusion-evaporation reaction Si28(S32,1α1p1n)Co54. Gamma-ray information gathered with the Ge detector array Gammasphere was correlated with evaporated particles detected in the charged particle detector system Microball and a 1π neutron detector array. A significantly extended excitation scheme of Co54 is presented, which includes a candidate for the isospin T=1, 6⊃+ state of the 1f7/2-2 multiplet. The results are compared to large-scale shell-model calculations in the fp shell. Effective interactions with and without isospin-breaking terms have been used to probe isospin symmetry and isospin mixing. A quest for deformed high-spin rotational cascades proved negative. This feature is discussed by means of cranking calculations.

Original language	English (US)
Article number	054309
Journal	Physical Review C - Nuclear Physics
Volume	82
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevC.82.054309
State	Published - Nov 15 2010
Externally published	Yes

ASJC Scopus subject areas

Nuclear and High Energy Physics

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10.1103/PhysRevC.82.054309

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Rudolph, D., Andersson, L. L., Bengtsson, R., Ekman, J., Erten, O., Fahlander, C., Johansson, E. K., Ragnarsson, I., Andreoiu, C., Bentley, M. A., Carpenter, M. P., Charity, R. J., Clark, R. M., Fallon, P., MacChiavelli, A. O., Reviol, W., Sarantites, D. G., Seweryniak, D., Svensson, C. E., & Williams, S. J. (2010). Isospin and deformation studies in the odd-odd N=Z nucleus Co54. Physical Review C - Nuclear Physics, 82(5), Article 054309. https://doi.org/10.1103/PhysRevC.82.054309

Rudolph, D, Andersson, LL, Bengtsson, R, Ekman, J, Erten, O, Fahlander, C, Johansson, EK, Ragnarsson, I, Andreoiu, C, Bentley, MA, Carpenter, MP, Charity, RJ, Clark, RM, Fallon, P, MacChiavelli, AO, Reviol, W, Sarantites, DG, Seweryniak, D, Svensson, CE & Williams, SJ 2010, 'Isospin and deformation studies in the odd-odd N=Z nucleus Co54', Physical Review C - Nuclear Physics, vol. 82, no. 5, 054309. https://doi.org/10.1103/PhysRevC.82.054309

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title = "Isospin and deformation studies in the odd-odd N=Z nucleus Co54",

abstract = "High-spin states in the odd-odd N=Z nucleus Co54 have been investigated by the fusion-evaporation reaction Si28(S32,1α1p1n)Co54. Gamma-ray information gathered with the Ge detector array Gammasphere was correlated with evaporated particles detected in the charged particle detector system Microball and a 1π neutron detector array. A significantly extended excitation scheme of Co54 is presented, which includes a candidate for the isospin T=1, 6⊃+ state of the 1f7/2-2 multiplet. The results are compared to large-scale shell-model calculations in the fp shell. Effective interactions with and without isospin-breaking terms have been used to probe isospin symmetry and isospin mixing. A quest for deformed high-spin rotational cascades proved negative. This feature is discussed by means of cranking calculations.",

author = "D. Rudolph and Andersson, {L. L.} and R. Bengtsson and J. Ekman and O. Erten and C. Fahlander and Johansson, {E. K.} and I. Ragnarsson and C. Andreoiu and Bentley, {M. A.} and Carpenter, {M. P.} and Charity, {R. J.} and Clark, {R. M.} and P. Fallon and MacChiavelli, {A. O.} and W. Reviol and Sarantites, {D. G.} and D. Seweryniak and Svensson, {C. E.} and Williams, {S. J.}",

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doi = "10.1103/PhysRevC.82.054309",

language = "English (US)",

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AU - Rudolph, D.

AU - Andersson, L. L.

AU - Bengtsson, R.

AU - Ekman, J.

AU - Erten, O.

AU - Fahlander, C.

AU - Johansson, E. K.

AU - Ragnarsson, I.

AU - Andreoiu, C.

AU - Bentley, M. A.

AU - Carpenter, M. P.

AU - Charity, R. J.

AU - Clark, R. M.

AU - Fallon, P.

AU - MacChiavelli, A. O.

AU - Reviol, W.

AU - Sarantites, D. G.

AU - Seweryniak, D.

AU - Svensson, C. E.

AU - Williams, S. J.

PY - 2010/11/15

Y1 - 2010/11/15

N2 - High-spin states in the odd-odd N=Z nucleus Co54 have been investigated by the fusion-evaporation reaction Si28(S32,1α1p1n)Co54. Gamma-ray information gathered with the Ge detector array Gammasphere was correlated with evaporated particles detected in the charged particle detector system Microball and a 1π neutron detector array. A significantly extended excitation scheme of Co54 is presented, which includes a candidate for the isospin T=1, 6⊃+ state of the 1f7/2-2 multiplet. The results are compared to large-scale shell-model calculations in the fp shell. Effective interactions with and without isospin-breaking terms have been used to probe isospin symmetry and isospin mixing. A quest for deformed high-spin rotational cascades proved negative. This feature is discussed by means of cranking calculations.

AB - High-spin states in the odd-odd N=Z nucleus Co54 have been investigated by the fusion-evaporation reaction Si28(S32,1α1p1n)Co54. Gamma-ray information gathered with the Ge detector array Gammasphere was correlated with evaporated particles detected in the charged particle detector system Microball and a 1π neutron detector array. A significantly extended excitation scheme of Co54 is presented, which includes a candidate for the isospin T=1, 6⊃+ state of the 1f7/2-2 multiplet. The results are compared to large-scale shell-model calculations in the fp shell. Effective interactions with and without isospin-breaking terms have been used to probe isospin symmetry and isospin mixing. A quest for deformed high-spin rotational cascades proved negative. This feature is discussed by means of cranking calculations.

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Isospin and deformation studies in the odd-odd N=Z nucleus Co54

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