Probing cluster structures through sub-barrier transfer reactions

D. C. Rafferty; M. Dasgupta; D. J. Hinde; C. Simenel; E. C. Simpson; E. Williams; I. P. Carter; K. J. Cook; D. H. Luong; S. D. McNeil; K. Ramachandran; K. Vo-Phuoc; A. Wakhle

doi:10.1051/epjconf/201612303004

Probing cluster structures through sub-barrier transfer reactions

D. C. Rafferty, M. Dasgupta, D. J. Hinde, C. Simenel, E. C. Simpson, E. Williams, I. P. Carter, K. J. Cook, D. H. Luong, S. D. McNeil, K. Ramachandran, K. Vo-Phuoc, A. Wakhle

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Abstract

Multinucleon transfer probabilities and excitation energy distributions have been measured in ^16,18O, ¹⁹F + ²⁰⁸Pb at energies between 90% - 100% of the Coulomb barrier. A strong 2p2n enhancement is observed for all reactions, though most spectacularly in the ¹⁸O induced reaction. Results are interpreted in terms of the Semiclassical model, which seems to suggest α-cluster transfer in all studied systems. The relation to cluster-states in the projectile is discussed, with the experimental results consistent with previous structure studies. Dissipation of energy in the collisions of ¹⁸O is compared between different reaction modes, with cluster transfer associated with dissipation over a large number of internal states. Cluster transfer is shown to be a long range dissipation mechanism, which will inform the development of future models to treat these dynamic processes in reactions.

Original language	English
Article number	03004
Journal	EPJ Web of Conferences
Volume	123
DOIs	https://doi.org/10.1051/epjconf/201612303004
Publication status	Published - 5 Sept 2016
Event	2015 Heavy Ion Accelerator Symposium, HIAS 2015 - Canberra, Australia Duration: 14 Sept 2015 → 18 Sept 2015

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@article{7612ad8a6edd4da2bf8a695c7cb98941,

title = "Probing cluster structures through sub-barrier transfer reactions",

abstract = "Multinucleon transfer probabilities and excitation energy distributions have been measured in 16,18O, 19F + 208Pb at energies between 90% - 100% of the Coulomb barrier. A strong 2p2n enhancement is observed for all reactions, though most spectacularly in the 18O induced reaction. Results are interpreted in terms of the Semiclassical model, which seems to suggest α-cluster transfer in all studied systems. The relation to cluster-states in the projectile is discussed, with the experimental results consistent with previous structure studies. Dissipation of energy in the collisions of 18O is compared between different reaction modes, with cluster transfer associated with dissipation over a large number of internal states. Cluster transfer is shown to be a long range dissipation mechanism, which will inform the development of future models to treat these dynamic processes in reactions.",

author = "Rafferty, {D. C.} and M. Dasgupta and Hinde, {D. J.} and C. Simenel and Simpson, {E. C.} and E. Williams and Carter, {I. P.} and Cook, {K. J.} and Luong, {D. H.} and McNeil, {S. D.} and K. Ramachandran and K. Vo-Phuoc and A. Wakhle",

note = "Publisher Copyright: {\textcopyright} The Authors, published by EDP Sciences.; 2015 Heavy Ion Accelerator Symposium, HIAS 2015 ; Conference date: 14-09-2015 Through 18-09-2015",

year = "2016",

month = sep,

day = "5",

doi = "10.1051/epjconf/201612303004",

language = "English",

volume = "123",

journal = "EPJ Web of Conferences",

issn = "2101-6275",

publisher = "EDP Sciences",

}

TY - JOUR

T1 - Probing cluster structures through sub-barrier transfer reactions

AU - Rafferty, D. C.

AU - Dasgupta, M.

AU - Hinde, D. J.

AU - Simenel, C.

AU - Simpson, E. C.

AU - Williams, E.

AU - Carter, I. P.

AU - Cook, K. J.

AU - Luong, D. H.

AU - McNeil, S. D.

AU - Ramachandran, K.

AU - Vo-Phuoc, K.

AU - Wakhle, A.

PY - 2016/9/5

Y1 - 2016/9/5

N2 - Multinucleon transfer probabilities and excitation energy distributions have been measured in 16,18O, 19F + 208Pb at energies between 90% - 100% of the Coulomb barrier. A strong 2p2n enhancement is observed for all reactions, though most spectacularly in the 18O induced reaction. Results are interpreted in terms of the Semiclassical model, which seems to suggest α-cluster transfer in all studied systems. The relation to cluster-states in the projectile is discussed, with the experimental results consistent with previous structure studies. Dissipation of energy in the collisions of 18O is compared between different reaction modes, with cluster transfer associated with dissipation over a large number of internal states. Cluster transfer is shown to be a long range dissipation mechanism, which will inform the development of future models to treat these dynamic processes in reactions.

AB - Multinucleon transfer probabilities and excitation energy distributions have been measured in 16,18O, 19F + 208Pb at energies between 90% - 100% of the Coulomb barrier. A strong 2p2n enhancement is observed for all reactions, though most spectacularly in the 18O induced reaction. Results are interpreted in terms of the Semiclassical model, which seems to suggest α-cluster transfer in all studied systems. The relation to cluster-states in the projectile is discussed, with the experimental results consistent with previous structure studies. Dissipation of energy in the collisions of 18O is compared between different reaction modes, with cluster transfer associated with dissipation over a large number of internal states. Cluster transfer is shown to be a long range dissipation mechanism, which will inform the development of future models to treat these dynamic processes in reactions.

UR - http://www.scopus.com/inward/record.url?scp=85012915586&partnerID=8YFLogxK

U2 - 10.1051/epjconf/201612303004

DO - 10.1051/epjconf/201612303004

M3 - Conference article

AN - SCOPUS:85012915586

SN - 2101-6275

VL - 123

JO - EPJ Web of Conferences

JF - EPJ Web of Conferences

M1 - 03004

T2 - 2015 Heavy Ion Accelerator Symposium, HIAS 2015

Y2 - 14 September 2015 through 18 September 2015

ER -

Probing cluster structures through sub-barrier transfer reactions

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