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Mass-asymmetric fission in the ⁴⁰Ca+¹⁴²Nd reaction

Edayillam, Prasad; Hinde, David; Williams, Elizabeth; Dasgupta, Mahananda; Carter, Ian; Cook, Kaitlin; Jeung, Dongyun; Luong, Duc Huy; McNeil, Steven; Palshetkar, Chandani; Rafferty, Dominic; Simenel, Cedric; Wakhle, Aditya; Ramachandran, K.; Khuyagbaatar, J.; Dullmann, Ch.E.; Lommel, B.; Kindler, B.

Description

Shell effects play a major role in fission. Mass-asymmetric fission observed in the spontaneous and low energy fission of actinide nuclei was explained by incorporating the fragment shell properties in liquid drop model. Asymmetric fission has also been observed in the low energy fission of neutron-deficient 180Hg nuclei in recent β-delayed fission experiments. This low-energy β-delayed fission has been explained in terms of strong shell effects in pre-scission configurations associated with...[Show more]

dc.contributor.authorEdayillam, Prasad
dc.contributor.authorHinde, David
dc.contributor.authorWilliams, Elizabeth
dc.contributor.authorDasgupta, Mahananda
dc.contributor.authorCarter, Ian
dc.contributor.authorCook, Kaitlin
dc.contributor.authorJeung, Dongyun
dc.contributor.authorLuong, Duc Huy
dc.contributor.authorMcNeil, Steven
dc.contributor.authorPalshetkar, Chandani
dc.contributor.authorRafferty, Dominic
dc.contributor.authorSimenel, Cedric
dc.contributor.authorWakhle, Aditya
dc.contributor.authorRamachandran, K.
dc.contributor.authorKhuyagbaatar, J.
dc.contributor.authorDullmann, Ch.E.
dc.contributor.authorLommel, B.
dc.contributor.authorKindler, B.
dc.contributor.editorMitchell, A.
dc.contributor.editorReed, M.
dc.contributor.editorSimpson, E.
dc.coverage.spatialCanberra
dc.date.accessioned2018-11-05T01:00:54Z
dc.date.available2018-11-05T01:00:54Z
dc.date.createdSeptember 14-18 2015
dc.identifier.urihttp://hdl.handle.net/1885/148840
dc.description.abstractShell effects play a major role in fission. Mass-asymmetric fission observed in the spontaneous and low energy fission of actinide nuclei was explained by incorporating the fragment shell properties in liquid drop model. Asymmetric fission has also been observed in the low energy fission of neutron-deficient 180Hg nuclei in recent β-delayed fission experiments. This low-energy β-delayed fission has been explained in terms of strong shell effects in pre-scission configurations associated with the system after capture. Calculations predicted asymmetric fission for heavier Hg isotopes as well, at compound nuclear excitation energy as high as 40 MeV. To explore the evolution of fission fragment mass distribution as a function of neutron and proton numbers and also with excitation energy, fission fragment mass distributions have been measured for the 40Ca+142Nd reaction forming the compound nucleus 182Hg at energies around the capture barrier, using the Heavy Ion Accelerator Facility and CUBE spectrometer at the Australian National University. Mass-asymmetric fission is observed in this reaction at an excitation energy of 33.6 MeV. The results are consistent with the β-delayed fission measurements and indicate the presence of shell effects even at higher exciation energies
dc.description.sponsorshipThe authors acknowledge support from the Australian Research Council through grants FL110100098, FT120100760, DP130101569, DP140101337, DP160101254 and DE140100784. Support for accelerator operations through the NCRIS program is acknowledged
dc.format.mimetypeapplication/pdf
dc.publisherEPJ Web of Conferences
dc.relation.ispartofseries2015 Heavy Ion Accelerator Symposium, HIAS 2015
dc.rights© The Authors, published by EDP Sciences. This is an open access article distributed under the terms of the Creative Commons Attribution License 4.0 (http://creativecommons.org/licenses/by/4.0/).
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.sourceEPJ Web of Conferences
dc.titleMass-asymmetric fission in the ⁴⁰Ca+¹⁴²Nd reaction
dc.typeConference paper
local.description.notesImported from ARIES
local.description.refereedYes
dc.date.issued2016
local.identifier.absfor020202 - Nuclear Physics
local.identifier.ariespublicationa383154xPUB5952
local.type.statusPublished Version
local.contributor.affiliationEdayillam, Prasad, College of Science, ANU
local.contributor.affiliationHinde, David, College of Science, ANU
local.contributor.affiliationWilliams, Elizabeth, College of Science, ANU
local.contributor.affiliationDasgupta, Mahananda, College of Science, ANU
local.contributor.affiliationCarter, Ian, College of Science, ANU
local.contributor.affiliationCook, Kaitlin, Joint Colleges of Science, ANU
local.contributor.affiliationJeung, Dongyun, College of Science, ANU
local.contributor.affiliationLuong, Duc Huy, College of Science, ANU
local.contributor.affiliationMcNeil, Steven, College of Science, ANU
local.contributor.affiliationPalshetkar, Chandani, College of Science, ANU
local.contributor.affiliationRafferty, Dominic, College of Science, ANU
local.contributor.affiliationSimenel, Cedric, College of Science, ANU
local.contributor.affiliationWakhle, Aditya, College of Science, ANU
local.contributor.affiliationRamachandran, K., Bhabha Atomic Research Centre
local.contributor.affiliationKhuyagbaatar, J., Helmholz Institute Mainz
local.contributor.affiliationDullmann, Ch.E., Helmholz Institute Mainz
local.contributor.affiliationLommel, B., GSI
local.contributor.affiliationKindler, B., GSI
dc.relationhttp://purl.org/au-research/grants/arc/FL110100098
dc.relationhttp://purl.org/au-research/grants/arc/FT120100760
dc.relationhttp://purl.org/au-research/grants/arc/DP130101569
dc.relationhttp://purl.org/au-research/grants/arc/DP140101337
dc.relationhttp://purl.org/au-research/grants/arc/DP160101254
dc.relationhttp://purl.org/au-research/grants/arc/DE140100784
local.identifier.doi10.1051/epjconf/201612303006
dc.date.updated2021-11-28T07:27:33Z
local.identifier.scopusID2-s2.0-85012918114
local.identifier.thomsonID000387536400020
dcterms.accessRightsOpen Access
CollectionsANU Research Publications

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