Influence of higher-order deformations in the 34S+ 168Er fusion reaction

C. R. Morton; A. C. Berriman; R. D. Butt; M. Dasgupta; D. J. Hinde; A. Godley; J. O. Newton; K. Hagino

doi:10.1103/PhysRevC.64.034604

Influence of higher-order deformations in the ³⁴S+ ¹⁶⁸Er fusion reaction

C. R. Morton^*, A. C. Berriman, R. D. Butt, M. Dasgupta, D. J. Hinde, A. Godley, J. O. Newton, K. Hagino

^*Corresponding author for this work

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

25 Citations (Scopus)

Abstract

The shape of the measured barrier distribution for the ³⁴S+ ¹⁶⁸Er reaction is analyzed using the coupled-channels description. The ¹⁶⁸Er nucleus is a good candidate to test current fusion models description of deformation since it has a large quadrupole deformation with an insignificant hexadecapole deformation. Coupling to weaker channels, the 2⁺₁ state in ³⁴S, the 3^-₁ state in ¹⁶⁸Er, and the pair neutron transfer channel, all were found to have little influence on the barrier distribution. A successful description of the barrier distribution was only obtained after the hexacontatetrapole deformation term in ¹⁶⁸Er (β^T₆) was included in the coupling scheme. However, a positive value for β^T₆ was needed where the macroscopic-microscopic model predicts a negative one.

Original language	English
Article number	034604
Pages (from-to)	346041-346048
Number of pages	8
Journal	Physical Review C - Nuclear Physics
Volume	64
DOIs	https://doi.org/10.1103/PhysRevC.64.034604 https://doi.org/10.1103/PhysRevC.64.034604
Publication status	Published - Sept 2001

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title = "Influence of higher-order deformations in the 34S+ 168Er fusion reaction",

abstract = "The shape of the measured barrier distribution for the 34S+ 168Er reaction is analyzed using the coupled-channels description. The 168Er nucleus is a good candidate to test current fusion models description of deformation since it has a large quadrupole deformation with an insignificant hexadecapole deformation. Coupling to weaker channels, the 2+1 state in 34S, the 3-1 state in 168Er, and the pair neutron transfer channel, all were found to have little influence on the barrier distribution. A successful description of the barrier distribution was only obtained after the hexacontatetrapole deformation term in 168Er (βT6) was included in the coupling scheme. However, a positive value for βT6 was needed where the macroscopic-microscopic model predicts a negative one.",

author = "Morton, {C. R.} and Berriman, {A. C.} and Butt, {R. D.} and M. Dasgupta and Hinde, {D. J.} and A. Godley and Newton, {J. O.} and K. Hagino",

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doi = "10.1103/PhysRevC.64.034604",

language = "English",

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T1 - Influence of higher-order deformations in the 34S+ 168Er fusion reaction

AU - Morton, C. R.

AU - Berriman, A. C.

AU - Butt, R. D.

AU - Dasgupta, M.

AU - Hinde, D. J.

AU - Godley, A.

AU - Newton, J. O.

AU - Hagino, K.

PY - 2001/9

Y1 - 2001/9

N2 - The shape of the measured barrier distribution for the 34S+ 168Er reaction is analyzed using the coupled-channels description. The 168Er nucleus is a good candidate to test current fusion models description of deformation since it has a large quadrupole deformation with an insignificant hexadecapole deformation. Coupling to weaker channels, the 2+1 state in 34S, the 3-1 state in 168Er, and the pair neutron transfer channel, all were found to have little influence on the barrier distribution. A successful description of the barrier distribution was only obtained after the hexacontatetrapole deformation term in 168Er (βT6) was included in the coupling scheme. However, a positive value for βT6 was needed where the macroscopic-microscopic model predicts a negative one.

AB - The shape of the measured barrier distribution for the 34S+ 168Er reaction is analyzed using the coupled-channels description. The 168Er nucleus is a good candidate to test current fusion models description of deformation since it has a large quadrupole deformation with an insignificant hexadecapole deformation. Coupling to weaker channels, the 2+1 state in 34S, the 3-1 state in 168Er, and the pair neutron transfer channel, all were found to have little influence on the barrier distribution. A successful description of the barrier distribution was only obtained after the hexacontatetrapole deformation term in 168Er (βT6) was included in the coupling scheme. However, a positive value for βT6 was needed where the macroscopic-microscopic model predicts a negative one.

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DO - 10.1103/PhysRevC.64.034604

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JO - Physical Review C - Nuclear Physics

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Influence of higher-order deformations in the ³⁴S+ ¹⁶⁸Er fusion reaction

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