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Results on the Influence of Neutron-Richness on Quasifission in Intermediate Mass Reactions

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dc.contributor.authorHammerton, K. M.
dc.contributor.authorMorrissey, D. J.
dc.contributor.authorKohley, Z.
dc.contributor.authorWakhle, A.
dc.contributor.authorStiefel, K.
dc.contributor.authorHinde, David
dc.contributor.authorDasgupta, M.
dc.contributor.authorWilliams, E.
dc.contributor.authorCarter, I. P.
dc.contributor.authorCook, K. J.
dc.contributor.authorJeong, D. Y.
dc.contributor.authorLuong, D. H.
dc.contributor.authorMcNeil, S. D.
dc.contributor.authorPalshetkar, C.
dc.contributor.authorRafferty, D. C.
dc.contributor.authorSimenel, C.
dc.contributor.authorGreene, J.
dc.date.accessioned2018-11-05T23:20:01Z
dc.date.available2018-11-05T23:20:01Z
dc.date.issued2017
dc.description.abstractSuperheavy elements are primarily formed through heavy ion fusion reactions. Formation of a fully equilibrated compound nucleus is a critical step in this reaction mechanism but can be hindered by orders of magnitude by quasifission, a process in which the dinuclear system breaks apart prior to full equilibration. To provide a complete description of heavy-ion fusion it is important to characterize the quasifission process. The interplay between the fusion-fission and quasifission reaction channels was explored by measuring fission mass distributions in eight different combinations of Cr+W reactions, with varying neutron-richness, at the Australian National University. The reactions were measured in two energy regimes: one at 13% above the Bass fusion barrier and one at 52.0 MeV of excitation energy in the compound nucleus, ECN*. For the systems measured at Ec.m./ VBass = 1.13 the dependence on the neutron-richness is clear. However, for the reactions at ECN* = 52.0 MeV, the dependence is less clear and additional factors are shown to play a vital role, especially the influence of deformation on the effective fusion barrier. The present work demonstrates that quasifission is an important process in competition with heavy-ion fusion in reactions with intermediate mass projectiles, particularly with more neutron-rich systems.en_AU
dc.format.mimetypeapplication/pdfen_AU
dc.identifier.isbn978-981-322-941-9en_AU
dc.identifier.urihttp://hdl.handle.net/1885/148872
dc.publisherWorld Scientificen_AU
dc.relation.ispartofFission and Properties of Neutron-Rich Nuclei : Proceedings of the Sixth International Conference on ICFN6 Sixth International Conference on Fission and Properties of Neutron-Rich Nuclei (ICFN6)en_AU
dc.rights© World Scientificen_AU
dc.titleResults on the Influence of Neutron-Richness on Quasifission in Intermediate Mass Reactionsen_AU
dc.typeConference paperen_AU
local.bibliographicCitation.lastpage294en_AU
local.bibliographicCitation.startpage289en_AU
local.contributor.affiliationHinde, D., Research School of Physics & Engineering, The Australian National Universityen_AU
local.contributor.authoremailDavid.Hinde@anu.edu.auen_AU
local.contributor.authoruidu8203491en_AU
local.description.embargo2037-12-31
local.identifier.ariespublicationu3102795xPUB2797
local.identifier.doi10.1142/9789813229426_0053en_AU
local.identifier.uidSubmittedByu1005913en_AU
local.type.statusPublished Versionen_AU

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