Nuclear structure dependence of fusion hindrance in heavy element synthesis

J. Khuyagbaatar; H. M. David; D. J. Hinde; I. P. Carter; K. J. Cook; M. Dasgupta; Ch E. Düllmann; D. Y. Jeung; B. Kindler; B. Lommel; D. H. Luong; E. Prasad; D. C. Rafferty; C. Sengupta; C. Simenel; E. C. Simpson; J. F. Smith; K. Vo-Phuoc; J. Walshe; A. Wakhle; E. Williams; A. Yakushev

doi:10.1103/PhysRevC.97.064618

Nuclear structure dependence of fusion hindrance in heavy element synthesis

J. Khuyagbaatar, H. M. David, D. J. Hinde, I. P. Carter, K. J. Cook, M. Dasgupta, Ch E. Düllmann, D. Y. Jeung, B. Kindler, B. Lommel, D. H. Luong, E. Prasad, D. C. Rafferty, C. Sengupta, C. Simenel, E. C. Simpson, J. F. Smith, K. Vo-Phuoc, J. Walshe, A. WakhleE. Williams, A. Yakushev

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Abstract

The production of the heaviest elements in fusion-evaporation reactions is substantially limited by very low cross sections, as fusion cross sections (including fusion-fission) are greatly reduced by the competing quasifission mechanism. Using the Australian National University Heavy Ion Accelerator Facility and CUBE detector array, fission fragments from the Ti48+Pb204,208 and Ti50+Pb206,208 reactions have been measured, with the aim to investigate how the competition between quasifission and fusion-fission evolves with small changes in entrance-channel properties associated mainly with the nuclear structure. Analysis of mass-distribution widths of strongly mass-angle-correlated fission fragments within the framework of the compound-nucleus fission theory demonstrates significant differences in quasifission (and therefore fusion) probabilities among the four reactions. The impact of nuclear structure on fusion highlights the importance of future radioactive beams.

Original language	English
Article number	064618
Journal	Physical Review C
Volume	97
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevC.97.064618
Publication status	Published - 28 Jun 2018

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Khuyagbaatar, J., David, H. M., Hinde, D. J., Carter, I. P., Cook, K. J., Dasgupta, M., Düllmann, C. E., Jeung, D. Y., Kindler, B., Lommel, B., Luong, D. H., Prasad, E., Rafferty, D. C., Sengupta, C., Simenel, C., Simpson, E. C., Smith, J. F., Vo-Phuoc, K., Walshe, J., ... Yakushev, A. (2018). Nuclear structure dependence of fusion hindrance in heavy element synthesis. Physical Review C, 97(6), Article 064618. https://doi.org/10.1103/PhysRevC.97.064618

@article{9071884221724c1298aa4ef3b90e5dc3,

title = "Nuclear structure dependence of fusion hindrance in heavy element synthesis",

abstract = "The production of the heaviest elements in fusion-evaporation reactions is substantially limited by very low cross sections, as fusion cross sections (including fusion-fission) are greatly reduced by the competing quasifission mechanism. Using the Australian National University Heavy Ion Accelerator Facility and CUBE detector array, fission fragments from the Ti48+Pb204,208 and Ti50+Pb206,208 reactions have been measured, with the aim to investigate how the competition between quasifission and fusion-fission evolves with small changes in entrance-channel properties associated mainly with the nuclear structure. Analysis of mass-distribution widths of strongly mass-angle-correlated fission fragments within the framework of the compound-nucleus fission theory demonstrates significant differences in quasifission (and therefore fusion) probabilities among the four reactions. The impact of nuclear structure on fusion highlights the importance of future radioactive beams.",

author = "J. Khuyagbaatar and David, \{H. M.\} and Hinde, \{D. J.\} and Carter, \{I. P.\} and Cook, \{K. J.\} and M. Dasgupta and D{\"u}llmann, \{Ch E.\} and Jeung, \{D. Y.\} and B. Kindler and B. Lommel and Luong, \{D. H.\} and E. Prasad and Rafferty, \{D. C.\} and C. Sengupta and C. Simenel and Simpson, \{E. C.\} and Smith, \{J. F.\} and K. Vo-Phuoc and J. Walshe and A. Wakhle and E. Williams and A. Yakushev",

note = "Publisher Copyright: {\textcopyright} 2018 American Physical Society.",

year = "2018",

month = jun,

day = "28",

doi = "10.1103/PhysRevC.97.064618",

language = "English",

volume = "97",

journal = "Physical Review C",

issn = "2469-9985",

publisher = "American Physical Society",

number = "6",

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Khuyagbaatar, J, David, HM, Hinde, DJ, Carter, IP, Cook, KJ , Dasgupta, M, Düllmann, CE, Jeung, DY, Kindler, B, Lommel, B, Luong, DH, Prasad, E, Rafferty, DC, Sengupta, C, Simenel, C , Simpson, EC, Smith, JF, Vo-Phuoc, K, Walshe, J, Wakhle, A, Williams, E & Yakushev, A 2018, 'Nuclear structure dependence of fusion hindrance in heavy element synthesis', Physical Review C, vol. 97, no. 6, 064618. https://doi.org/10.1103/PhysRevC.97.064618

TY - JOUR

T1 - Nuclear structure dependence of fusion hindrance in heavy element synthesis

AU - Khuyagbaatar, J.

AU - David, H. M.

AU - Hinde, D. J.

AU - Carter, I. P.

AU - Cook, K. J.

AU - Dasgupta, M.

AU - Düllmann, Ch E.

AU - Jeung, D. Y.

AU - Kindler, B.

AU - Lommel, B.

AU - Luong, D. H.

AU - Prasad, E.

AU - Rafferty, D. C.

AU - Sengupta, C.

AU - Simenel, C.

AU - Simpson, E. C.

AU - Smith, J. F.

AU - Vo-Phuoc, K.

AU - Walshe, J.

AU - Wakhle, A.

AU - Williams, E.

AU - Yakushev, A.

PY - 2018/6/28

Y1 - 2018/6/28

N2 - The production of the heaviest elements in fusion-evaporation reactions is substantially limited by very low cross sections, as fusion cross sections (including fusion-fission) are greatly reduced by the competing quasifission mechanism. Using the Australian National University Heavy Ion Accelerator Facility and CUBE detector array, fission fragments from the Ti48+Pb204,208 and Ti50+Pb206,208 reactions have been measured, with the aim to investigate how the competition between quasifission and fusion-fission evolves with small changes in entrance-channel properties associated mainly with the nuclear structure. Analysis of mass-distribution widths of strongly mass-angle-correlated fission fragments within the framework of the compound-nucleus fission theory demonstrates significant differences in quasifission (and therefore fusion) probabilities among the four reactions. The impact of nuclear structure on fusion highlights the importance of future radioactive beams.

AB - The production of the heaviest elements in fusion-evaporation reactions is substantially limited by very low cross sections, as fusion cross sections (including fusion-fission) are greatly reduced by the competing quasifission mechanism. Using the Australian National University Heavy Ion Accelerator Facility and CUBE detector array, fission fragments from the Ti48+Pb204,208 and Ti50+Pb206,208 reactions have been measured, with the aim to investigate how the competition between quasifission and fusion-fission evolves with small changes in entrance-channel properties associated mainly with the nuclear structure. Analysis of mass-distribution widths of strongly mass-angle-correlated fission fragments within the framework of the compound-nucleus fission theory demonstrates significant differences in quasifission (and therefore fusion) probabilities among the four reactions. The impact of nuclear structure on fusion highlights the importance of future radioactive beams.

UR - https://www.scopus.com/pages/publications/85049601266

U2 - 10.1103/PhysRevC.97.064618

DO - 10.1103/PhysRevC.97.064618

M3 - Article

SN - 2469-9985

VL - 97

JO - Physical Review C

JF - Physical Review C

IS - 6

M1 - 064618

ER -

Nuclear structure dependence of fusion hindrance in heavy element synthesis

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