Competing single-particle and collective structures in [Formula Presented]Nb

S. L. Tabor; J. Döring; G. D. Johns; R. A. Kaye; G. N. Sylvan; C. J. Gross; Y. A. Akovali; C. Baktash; D. W. Stracener; P. F. Hua; M. Korolija; D. R. LaFosse; D. G. Sarantites; F. E. Durham; I. Y. Lee; A. O. Macchiavelli; W. Rathbun; A. Vander Molen

doi:10.1103/PhysRevC.56.142

Competing single-particle and collective structures in [Formula Presented]Nb

S. L. Tabor, J. Döring, G. D. Johns, R. A. Kaye, G. N. Sylvan, C. J. Gross, Y. A. Akovali, C. Baktash, D. W. Stracener, P. F. Hua, M. Korolija, D. R. LaFosse, D. G. Sarantites, F. E. Durham, I. Y. Lee, A. O. Macchiavelli, W. Rathbun, A. Vander Molen

Medical Isotopes and Development

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Abstract

The high-spin structure of odd-odd [Formula Presented]Nb was studied with the early implementation of GAMMASPHERE using 36 Compton-suppressed Ge detectors and the MICROBALL, a 95-element full-sphere charged-particle detector array. High-spin states were populated using the [Formula Presented]Ni[Formula Presented]S,[Formula Presented] reaction at 135 MeV with beams from the 88-Inch Cyclotron at Lawrence Berkeley National Laboratory. A number of bands were observed up to spins as high as [Formula Presented]. The yrast positive-parity band shares many characteristics with the [Formula Presented] bands in other odd-odd [Formula Presented]-[Formula Presented]-[Formula Presented] shell nuclei. These similarities include the behavior of the moments of inertia, the magnitude and phase of the signature splitting and its phase reversal near the [Formula Presented] state, and the strong alternations in the [Formula Presented] strengths. The moments of inertia in the lowest pair of negative-parity bands start out with a sharp upbend and then gradually fall back to the rigid-body value. New positive- and negative-parity bands appear in the quasiparticle alignment region and eventually become yrast. Some additional positive-parity states around spin [Formula Presented] are candidates for fully or nearly fully aligned shell-model-like configurations.

Original language	English
Pages (from-to)	142-153
Number of pages	12
Journal	Physical Review C - Nuclear Physics
Volume	56
Issue number	1
DOIs	https://doi.org/10.1103/PhysRevC.56.142
State	Published - 1997

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Tabor, S. L., Döring, J., Johns, G. D., Kaye, R. A., Sylvan, G. N., Gross, C. J., Akovali, Y. A., Baktash, C., Stracener, D. W., Hua, P. F., Korolija, M., LaFosse, D. R., Sarantites, D. G., Durham, F. E., Lee, I. Y., Macchiavelli, A. O., Rathbun, W., & Vander Molen, A. (1997). Competing single-particle and collective structures in [Formula Presented]Nb. Physical Review C - Nuclear Physics, 56(1), 142-153. https://doi.org/10.1103/PhysRevC.56.142

@article{be2c2412a86747ba8c37b773625c32d1,

title = "Competing single-particle and collective structures in [Formula Presented]Nb",

abstract = "The high-spin structure of odd-odd [Formula Presented]Nb was studied with the early implementation of GAMMASPHERE using 36 Compton-suppressed Ge detectors and the MICROBALL, a 95-element full-sphere charged-particle detector array. High-spin states were populated using the [Formula Presented]Ni[Formula Presented]S,[Formula Presented] reaction at 135 MeV with beams from the 88-Inch Cyclotron at Lawrence Berkeley National Laboratory. A number of bands were observed up to spins as high as [Formula Presented]. The yrast positive-parity band shares many characteristics with the [Formula Presented] bands in other odd-odd [Formula Presented]-[Formula Presented]-[Formula Presented] shell nuclei. These similarities include the behavior of the moments of inertia, the magnitude and phase of the signature splitting and its phase reversal near the [Formula Presented] state, and the strong alternations in the [Formula Presented] strengths. The moments of inertia in the lowest pair of negative-parity bands start out with a sharp upbend and then gradually fall back to the rigid-body value. New positive- and negative-parity bands appear in the quasiparticle alignment region and eventually become yrast. Some additional positive-parity states around spin [Formula Presented] are candidates for fully or nearly fully aligned shell-model-like configurations.",

author = "Tabor, {S. L.} and J. D{\"o}ring and Johns, {G. D.} and Kaye, {R. A.} and Sylvan, {G. N.} and Gross, {C. J.} and Akovali, {Y. A.} and C. Baktash and Stracener, {D. W.} and Hua, {P. F.} and M. Korolija and LaFosse, {D. R.} and Sarantites, {D. G.} and Durham, {F. E.} and Lee, {I. Y.} and Macchiavelli, {A. O.} and W. Rathbun and {Vander Molen}, A.",

year = "1997",

doi = "10.1103/PhysRevC.56.142",

language = "English",

volume = "56",

pages = "142--153",

journal = "Physical Review C - Nuclear Physics",

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Tabor, SL, Döring, J, Johns, GD, Kaye, RA, Sylvan, GN, Gross, CJ, Akovali, YA, Baktash, C, Stracener, DW, Hua, PF, Korolija, M, LaFosse, DR, Sarantites, DG, Durham, FE, Lee, IY, Macchiavelli, AO, Rathbun, W & Vander Molen, A 1997, 'Competing single-particle and collective structures in [Formula Presented]Nb', Physical Review C - Nuclear Physics, vol. 56, no. 1, pp. 142-153. https://doi.org/10.1103/PhysRevC.56.142

TY - JOUR

T1 - Competing single-particle and collective structures in [Formula Presented]Nb

AU - Tabor, S. L.

AU - Döring, J.

AU - Johns, G. D.

AU - Kaye, R. A.

AU - Sylvan, G. N.

AU - Gross, C. J.

AU - Akovali, Y. A.

AU - Baktash, C.

AU - Stracener, D. W.

AU - Hua, P. F.

AU - Korolija, M.

AU - LaFosse, D. R.

AU - Sarantites, D. G.

AU - Durham, F. E.

AU - Lee, I. Y.

AU - Macchiavelli, A. O.

AU - Rathbun, W.

AU - Vander Molen, A.

PY - 1997

Y1 - 1997

N2 - The high-spin structure of odd-odd [Formula Presented]Nb was studied with the early implementation of GAMMASPHERE using 36 Compton-suppressed Ge detectors and the MICROBALL, a 95-element full-sphere charged-particle detector array. High-spin states were populated using the [Formula Presented]Ni[Formula Presented]S,[Formula Presented] reaction at 135 MeV with beams from the 88-Inch Cyclotron at Lawrence Berkeley National Laboratory. A number of bands were observed up to spins as high as [Formula Presented]. The yrast positive-parity band shares many characteristics with the [Formula Presented] bands in other odd-odd [Formula Presented]-[Formula Presented]-[Formula Presented] shell nuclei. These similarities include the behavior of the moments of inertia, the magnitude and phase of the signature splitting and its phase reversal near the [Formula Presented] state, and the strong alternations in the [Formula Presented] strengths. The moments of inertia in the lowest pair of negative-parity bands start out with a sharp upbend and then gradually fall back to the rigid-body value. New positive- and negative-parity bands appear in the quasiparticle alignment region and eventually become yrast. Some additional positive-parity states around spin [Formula Presented] are candidates for fully or nearly fully aligned shell-model-like configurations.

AB - The high-spin structure of odd-odd [Formula Presented]Nb was studied with the early implementation of GAMMASPHERE using 36 Compton-suppressed Ge detectors and the MICROBALL, a 95-element full-sphere charged-particle detector array. High-spin states were populated using the [Formula Presented]Ni[Formula Presented]S,[Formula Presented] reaction at 135 MeV with beams from the 88-Inch Cyclotron at Lawrence Berkeley National Laboratory. A number of bands were observed up to spins as high as [Formula Presented]. The yrast positive-parity band shares many characteristics with the [Formula Presented] bands in other odd-odd [Formula Presented]-[Formula Presented]-[Formula Presented] shell nuclei. These similarities include the behavior of the moments of inertia, the magnitude and phase of the signature splitting and its phase reversal near the [Formula Presented] state, and the strong alternations in the [Formula Presented] strengths. The moments of inertia in the lowest pair of negative-parity bands start out with a sharp upbend and then gradually fall back to the rigid-body value. New positive- and negative-parity bands appear in the quasiparticle alignment region and eventually become yrast. Some additional positive-parity states around spin [Formula Presented] are candidates for fully or nearly fully aligned shell-model-like configurations.

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U2 - 10.1103/PhysRevC.56.142

DO - 10.1103/PhysRevC.56.142

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JO - Physical Review C - Nuclear Physics

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ER -

Competing single-particle and collective structures in [Formula Presented]Nb

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