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NSR database version of April 11, 2024.

Search: Author = D.C.Rafferty

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2023TA12      Phys.Rev. C 107, 054601 (2023)

T.Tanaka, D.J.Hinde, M.Dasgupta, E.Williams, K.Vo-Phuoc, C.Simenel, E.C.Simpson, D.Y.Jeung, I.P.Carter, K.J.Cook, N.R.Lobanov, D.H.Luong, C.Palshetkar, D.C.Rafferty, K.Ramachandran

Competition between fusion and quasifission in the angular momentum dependent dynamics of heavy element synthesis reactions

NUCLEAR REACTIONS ¹⁹⁶Pt(⁵⁴Cr, X), E(cm)=209.5, 215.7, 219.0, 223.8 MeV;¹⁹⁸Pt(⁵²Cr, X), E(cm)=213.4, 218.1, 222.9, 226.7 MeV; measured reaction products; deduced capture σ(E), fission and scattering σ(θ), dependence of capture σ on the angular momentum, fragments angular momentum distribution, correlated distributions of mass and angle (MADs) of the fragments, fragments total kinetic energies, ratio of symmetric component to total fission component (quasifission and fusion-fission). ANU CUBE detector system consisting of two large-area position-sensitive MWPCs at 14UD tandem electrostatic accelerator of the Australian National University Heavy Ion Accelerator Facility.

doi: 10.1103/PhysRevC.107.054601
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2021JE02      Phys.Rev. C 103, 034603 (2021)

D.Y.Jeung, D.J.Hinde, E.Williams, M.Dasgupta, E.C.Simpson, R.du Rietz, D.H.Luong, R.Rafiei, M.Evers, I.P.Carter, K.Ramachandran, C.Palshetkar, D.C.Rafferty, C.Simenel, A.Wakhle

Energy dissipation and suppression of capture cross sections in heavy ion reactions

NUCLEAR REACTIONS ²³²Th(¹⁸O, X), (³⁰Si, X), (³⁴S, X), (⁴⁰Ca, X), E(cm)=145-203 MeV; measured binary reaction products, including pairs of fission fragments, scattered beam particles and recoils in coincidence, and σ(θ) using the CUBE spectrometer at the 14UD tandem accelerator of Australian National University Heavy Ion Accelerator Facility; deduced distributions of the source velocity components of the fissioning nuclei, mass angle distributions (MADs), CC capture cross sections, full momentum transfer (FMT) fission cross sections, ratio of sequential fission to capture-fission, capture barriers. Comparison with coupled-channel (CC) calculations using CCFULL code; discussed sequential and total fission cross sections.

doi: 10.1103/PhysRevC.103.034603
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD1001.

2021TA31      Phys.Rev.Lett. 127, 222501 (2021)

T.Tanaka, D.J.Hinde, M.Dasgupta, E.Williams, K.Vo-Phuoc, C.Simenel, E.C.Simpson, D.Y.Jeung, I.P.Carter, K.J.Cook, N.R.Lobanov, D.H.Luong, C.Palshetkar, D.C.Rafferty, K.Ramachandran

Mass Equilibration and Fluctuations in the Angular Momentum Dependent Dynamics of Heavy Element Synthesis Reactions

NUCLEAR REACTIONS ¹⁹⁸Pt(⁵²Cr, X)²⁵⁰No, E=219 MeV; ¹⁹⁶Pt(⁵⁴Cr, X)²⁵⁰No, E=222.9 MeV; measured reaction products; deduced correlated distributions of mass and angle is called a mass-angle distribution (MAD), scattering σ. TDHF calculations. The Heavy Ion Accelerator Facility of the Australian National University.

doi: 10.1103/PhysRevLett.127.222501
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD1021.

2020PR14      Phys.Lett. B 811, 135941 (2020)

E.Prasad, D.J.Hinde, M.Dasgupta, D.Y.Jeung, A.C.Berriman, B.M.A.Swinton-Bland, C.Simenel, E.C.Simpson, R.Bernard, E.Williams, K.J.Cook, D.C.Rafferty, C.Sengupta, J.F.Smith, K.Vo-Phuoc, J.Walshe

Systematics of the mass-asymmetric fission of excited nuclei from ¹⁷⁶Os to ²⁰⁶Pb

NUCLEAR REACTIONS ¹⁷⁶Os, ^176,180Pt, ^192,198Hg, ²⁰⁶Pb(p, F), (¹²C, F), (³²S, F), (⁴⁰Ca, F), (⁴⁸Ca, F), E not given; analyzed available data; deduced mass-asymmetric fission systematics, total kinetic energy distributions, fission mass-ratio distributions. Comparison with GEF calculations.

doi: 10.1016/j.physletb.2020.135941
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2019HA17      Phys.Rev. C 99, 054621 (2019)

K.Hammerton, D.J.Morrissey, Z.Kohley, D.J.Hinde, M.Dasgupta, A.Wakhle, E.Williams, I.P.Carter, K.J.Cook, J.Greene, D.Y.Jeung, D.H.Luong, S.D.McNeil, C.Palshetkar, D.C.Rafferty, C.Simenel, K.Stiefel

Entrance channel effects on the quasifission reaction channel in Cr + W systems

NUCLEAR REACTIONS ¹⁸⁰W(⁵⁰Cr, X)²³⁰Cf^*, E(cm)=210.0 MeV; ¹⁸⁰W(⁵²Cr, X)²³²Cf^*, E(cm)=214.1; ¹⁸⁰W(⁵⁴Cr, X)²³⁴Cf^*, E(cm)=215.4 MeV; ¹⁸²W(⁵⁴Cr, X)²³⁶Cf^*, E(cm)=213.8 MeV; ¹⁸⁴W(⁵²Cr, X)²³⁶Cf^*, E(cm)=209.7 MeV; ¹⁸⁴W(⁵⁴Cr, X)²³⁸Cf^*, E(cm)=211.8 MeV; ¹⁸⁶W(⁵⁰Cr, X)²³⁶Cf^*, E(cm)=201.3 MeV; ¹⁸⁶W(⁵⁴Cr, X)²⁴⁰Cf^*, E(cm)=209.5 MeV; measured fission fragments, mass-angle distributions, mass distribution of fragments using the CUBE detector for charged particle detection at the Heavy Ion Accelerator Facility of the Australian National University; deduced curvature parameter, entrance channel effects, and impact of target deformation effects on the quasifission process.

doi: 10.1103/PhysRevC.99.054621
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2018KH05      Phys.Rev. C 97, 064618 (2018)

J.Khuyagbaatar, H.M.David, D.J.Hinde, I.P.Carter, K.J.Cook, M.Dasgupta, Ch.E.Dullmann, 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

Nuclear structure dependence of fusion hindrance in heavy element synthesis

NUCLEAR REACTIONS ^204,208Pb(⁴⁸Ti, X), E=240.0, 245.0, 252.2, 259.0, 270.0, 280.0 MeV; ^206,208Pb(⁵⁰Ti, X), E=236.0, 240.0, 252.0, 258.0, 264.0, 270.0, 280.2 MeV; measured reaction products, mass ratio and angular distributions (MAD) of fragments, double differential σ(θ, M_R), and widths using CUBE detector array at the Heavy Ion Accelerator Facility of Australian National University. ²⁰⁶Pb(³⁶S, X), (³⁴S, X), (⁴⁸Ti, X), (⁵⁰Ti, X), E^*=25-60 MeV; calculated mean-squared angular momenta, widths and M_R distributions, and compared with experimental data. Discussed impact of nuclear structure on fusion-evaporation reactions.

doi: 10.1103/PhysRevC.97.064618
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2018MO13      Phys.Rev. C 97, 054603 (2018)

G.Mohanto, D.J.Hinde, K.Banerjee, M.Dasgupta, D.Y.Jeung, C.Simenel, E.C.Simpson, A.Wakhle, E.Williams, I.P.Carter, K.J.Cook, D.H.Luong, C.S.Palshetkar, D.C.Rafferty

Interplay of spherical closed shells and N/Z asymmetry in quasifission dynamics

NUCLEAR REACTIONS ²⁰⁸Pb(⁵⁰Cr, X)²⁵⁸Sg^*,208Pb(⁵²Cr, X)²⁶⁰Sg^*,208Pb(⁵⁴Cr, X)²⁶²Sg^*,206Pb(⁵²Cr, X)²⁵⁸Sg^*,204Pb(⁵⁴Cr, X), ²⁵⁸Sg^*, E=257-292.7 MeV; measured fission fragments, two fission fragments in coincidence mode, and mass angle distributions (MADs) using CUBE spectrometer at the Australian National University 14 UD tandem accelerator facility; deduced mass-ratio distributions of fission fragments, symmetric-peaked fission to total fission ratio, symmetric fission as a function of entrance channel magicity, effect of entrance-channel spherical closed shells and N/Z asymmetry on quasifission dynamics. Relevance to synthesis of superheavy-elements.

doi: 10.1103/PhysRevC.97.054603
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2018PA48      Phys.Rev. C 98, 044603 (2018)

C.S.Palshetkar, D.J.Hinde, M.Dasgupta, E.Williams, K.Ramachandran, I.P.Carter, K.J.Cook, D.Y.Jeung, D.H.Luong, S.D.McNeil, D.C.Rafferty, A.Wakhle

Fission cross sections as a probe of fusion dynamics at high angular momentum

NUCLEAR REACTIONS ¹⁴⁸Sm(¹⁶O, X)¹⁶⁴Yb^*, E(cm)=73.92, 82.04, 90.21, 99.24 MeV; ¹³⁶Ba(²⁸Si, X)¹⁶⁴Yb^*, E(cm)=108.22, 116.38, 119.07, 125.42 MeV; ¹²⁴Sn(⁴⁰Ca, X)¹⁶⁴Yb^*, E(cm)=126.00, 130.11, 139.19, 144.07 MeV; measured angular distributions and mass-angle distributions (MADs) of fission fragments using CUBE spectrometer at the 14UD tandem accelerator at the Australian National University; deduced fission σ(E) of excited compound nuclei with coupled channel analysis for angular momentum distributions. Comparison with previous experimental fusion and fission σ(E), and with statistical model calculations. Discussed fission cross-section as a sensitive probe of fusion dynamics at high angular momentum.

doi: 10.1103/PhysRevC.98.044603
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD0921.

2018WA06      Phys.Rev. C 97, 021602 (2018)

A.Wakhle, K.Hammerton, Z.Kohley, D.J.Morrissey, K.Stiefel, J.Yurkon, J.Walshe, K.J.Cook, M.Dasgupta, D.J.Hinde, D.J.Jeung, E.Prasad, D.C.Rafferty, C.Simenel, E.C.Simpson, K.Vo-Phuoc, J.King, W.Loveland, R.Yanez

Capture cross sections for the synthesis of new heavy nuclei using radioactive beams

NUCLEAR REACTIONS ¹⁸¹Ta(³⁹K, X), E=180-210 MeV; ¹⁸¹Ta(⁴⁶K, X), E=190-215 MeV; measured time of flight and relative position of fission fragments, capture-fission σ(E) from a binary event using 14UD Heavy-ion accelerator facility of Australian National University (ANU), and Coupled Cyclotron Facility (CCF) projectile fragmentation facility at NSCL-MSU, and the Coincident Fission Fragment Detector (CFFD) at the ReA3 facility at NSCL; deduced velocity vectors of the coincident fragments, masses and angular distributions of fission fragments. Comparison with several phenomenological models and microscopic time-dependent Hartree-Fock calculations. Discussed implications for the synthesis of heavy nuclei at radioactive beam facilities. ¹⁹⁷Au(³¹Al, X), E(cm), ²⁴⁸Cm(²⁶Mg, X), E(cm)=110-160 MeV; ²⁴⁸Cm(⁴⁸Ca, X), E(cm)=195-230 MeV; ¹⁵⁴Sm(³¹Al, X), E(cm)=125-190 MeV; ²³⁸U(⁴⁸Ca, X), E(cm)=185-235 MeV; ²³⁸U(⁶⁴Ni, X), E(cm)=260-300 MeV; compiled theoretical and experimental values of capture fission σ(E). Comparison with several theoretical results.

doi: 10.1103/PhysRevC.97.021602
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2285.

2018WI01      Phys.Rev.Lett. 120, 022501 (2018)

E.Williams, K.Sekizawa, D.J.Hinde, C.Simenel, M.Dasgupta, I.P.Carter, K.J.Cook, D.Y.Jeung, S.D.McNeil, C.S.Palshetkar, D.C.Rafferty, K.Ramachandran, A.Wakhle

Exploring Zeptosecond Quantum Equilibration Dynamics: From Deep-Inelastic to Fusion-Fission Outcomes in ⁵⁸Ni + ⁶⁰Ni Reactions

NUCLEAR REACTIONS ^58,60Ni(⁵⁸Ni, X), E=158.4 MeV; measured reaction products; deduced σ, σ(θ, E). Comparison with theoretical predictions using time dependent Hartree-Fock and time dependent random phase approximation approaches, which, respectively, incorporate one-body energy dissipation and fluctuations.

doi: 10.1103/PhysRevLett.120.022501
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2017MO40      Phys.Rev.Lett. 119, 222502 (2017)

M.Morjean, D.J.Hinde, C.Simenel, D.Y.Jeung, M.Airiau, K.J.Cook, M.Dasgupta, A.Drouart, D.Jacquet, S.Kalkal, C.S.Palshetkar, E.Prasad, D.Rafferty, E.C.Simpson, L.Tassan-Got, K.Vo-Phuoc, E.Williams

Evidence for the Role of Proton Shell Closure in Quasifission Reactions from X-Ray Fluorescence of Mass-Identified Fragments

NUCLEAR REACTIONS ²³⁸U(⁴⁸Ti, X), E=276 MeV; measured reaction products, characteristic fluorescence x rays; deduced photon spectrum, fragment yields.

doi: 10.1103/PhysRevLett.119.222502
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2017PR07      Phys.Rev. C 96, 034608 (2017)

E.Prasad, D.J.Hinde, E.Williams, M.Dasgupta, I.P.Carter, K.J.Cook, D.Y.Jeung, D.H.Luong, C.S.Palshetkar, D.C.Rafferty, K.Ramachandran, C.Simenel, A.Wakhle

Fusion and quasifission studies for the ⁴⁰Ca + ¹⁸⁶W, ¹⁹²Os reactions

NUCLEAR REACTIONS ¹⁸⁶W(⁴⁰Ca, X)²²⁶Pu*, E=199.3, 204.3, 214.3, 225.4 MeV; ¹⁹²Os(⁴⁰Ca, X)²³²Cm*, E=199.3, 204.3, 214.3, 225.3, 239.8, 262.6 MeV; measured mass-angle distributions (MADs) of the fragments, differential σ(θ, E), total fusion σ(E) using the CUBE spectrometer at the Heavy Ion Accelerator Facility of the Australian National University; deduced fragment mass ratio σ(M_R), potential parameters from Coupled-channels calculations, Coulomb barriers as a function of orientation angles, parameters of the sticking-time distribution and average sticking time for quasifission components. Comparison with theoretical calculations using classical phenomenological approach by GEneral description of Fission observables (GEF) model. Relevance to quasifission and fusion-fission processes in the production of superheavy elements (SHE).

doi: 10.1103/PhysRevC.96.034608
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD0932.

2016KA16      Phys.Rev. C 93, 044605 (2016)

S.Kalkal, E.C.Simpson, D.H.Luong, K.J.Cook, M.Dasgupta, D.J.Hinde, I.P.Carter, D.Y.Jeung, G.Mohanto, C.S.Palshetkar, E.Prasad, D.C.Rafferty, C.Simenel, K.Vo-Phuoc, E.Williams, L.R.Gasques, P.R.S.Gomes, R.Linares

Asymptotic and near-target direct breakup of ⁶Li and ⁷Li

NUCLEAR REACTIONS ⁵⁸Ni(⁶Li, X), (⁷Li, X), E=13.07 MeV; ⁶⁴Zn(⁶Li, X), E=13.55 MeV; ⁶⁴Zn(⁷Li, X), E=13.60 MeV; measured energy, position, and time of flight (TOF) of the charged breakup fragments in coincidence mode using BALiN array, spectra of α-d and α-t breakup pairs at ANU Heavy Ion accelerator facility; deduced prompt and asymptotic breakups, probability of populating the excitation energies above the breakup threshold for 3+ resonant states of ⁶Li, excitation energy dependent mean-lives, β versus θ₁₂ distributions, asymptotic, near-target, and total direct breakup differential σ(θ). Simulations using a modified version of Monte Carlo classical trajectory model code PLATYPUS.

doi: 10.1103/PhysRevC.93.044605
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2016RA26      Phys.Rev. C 94, 024607 (2016)

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

Multinucleon transfer in ^{16, 18}O, ¹⁹F + ²⁰⁸Pb reactions at energies near the fusion barrier

NUCLEAR REACTIONS ²⁰⁸Pb(¹⁶O, X)¹²C/¹³C/¹⁴C/¹³N/¹⁴N/¹⁵N/¹⁴O/¹⁵O/¹⁷O/¹⁸O/¹⁷F, E(cm)=73.0, 72.5, 70.9, 69.3; ²⁰⁸Pb(¹⁸O, X)¹¹B/¹²C/¹³C/¹⁴C/¹⁵C/¹⁶C/¹⁵N/¹⁶N/¹⁷N/¹⁶O/¹⁷O/¹⁹O/¹⁹F, E(cm)=73.6, 71.6, 71.1, 70.3, 69.6, 68.0 MeV; ²⁰⁸Pb(¹⁹F, X)¹²C/¹³C/¹⁴C/¹⁵N/¹⁶N/¹⁷N/¹⁶O/¹⁷O/¹⁸O/¹⁸F/²⁰F/²¹F/²⁰Ne/²¹Ne/²²Ne, E(cm)=83.3, 81.3, 80.6, 78.9, 77.2, 75.5, 74.1 MeV; measured projectile-like fragments (PLFs) produced in +1p, +2n, +1n, -1n, -2n, -1p, -1p1n, -1p2n, -2p, -2p1n, -2p2n, -2p3n, -2p4n, -3p4n, +1p2n, +1p1n, +2n, -3p2n and -3p3n transfer channels, ΔE-E spectra, probabilities for various transfer processes, ratios of quasielastic and Rutherford scattering cross sections, distribution of excitation energies at ANU Heavy Ion accelerator facility.

doi: 10.1103/PhysRevC.94.024607
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2015HA12      Phys.Rev. C 91, 041602 (2015)

K.Hammerton, Z.Kohley, D.J.Hinde, M.Dasgupta, A.Wakhle, E.Williams, V.E.Oberacker, A.S.Umar, I.P.Carter, K.J.Cook, J.Greene, D.Y.Jeung, D.H.Luong, S.D.McNeil, C.S.Palshetkar, D.C.Rafferty, C.Simenel, K.Stiefel

Reduced quasifission competition in fusion reactions forming neutron-rich heavy elements

NUCLEAR REACTIONS ¹⁸⁰W(⁵⁰Cr, X), E(cm)=222.6 MeV; ¹⁸⁰W(⁵²Cr, X), E(cm)=221.2 MeV; ¹⁸⁰W(⁵⁴Cr, X), E(cm)=219.8 MeV; ¹⁸⁶W(⁵⁰Cr, X), E(cm)=221.0 MeV; ¹⁸⁴W(⁵²Cr, X), E(cm)=220.1 MeV; ¹⁸²W(⁵⁴Cr, X), E(cm)=221.0 MeV; ¹⁸⁴W(⁵⁴Cr, X), E(cm)=218.9 MeV; ¹⁸⁶W(⁵⁴Cr, X), E(cm)=218.3 MeV; measured spectra of neutron-rich fragments from fusion-fission and quasifission in coincidence mode, mass-angle distributions (MADs) using the ANU CUBE detector system at ANU's Heavy-Ion Accelerator Facility; deduced strong dependence on the N/Z of the compound system in quasifission system. Comparison with microscopic time-dependent Hartree-Fock calculations of the quasifission process.

doi: 10.1103/PhysRevC.91.041602
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2015PR07      Phys.Rev. C 91, 064605 (2015)

E.Prasad, D.J.Hinde, K.Ramachandran, E.Williams, M.Dasgupta, I.P.Carter, K.J.Cook, D.Y.Jeung, D.H.Luong, S.McNeil, C.S.Palshetkar, D.C.Rafferty, C.Simenel, A.Wakhle, J.Khuyagbaatar, Ch.E.Dullmann, B.Lommel, B.Kindler

Observation of mass-asymmetric fission of mercury nuclei in heavy ion fusion

NUCLEAR REACTIONS ¹⁴²Nd(⁴⁰Ca, X)¹⁸²Hg*, E=167.7, 194.9, 199.9, 210.0, 221.1 MeV; ¹⁸²W(¹³C, X)¹⁹⁵Hg*, E=60.0, 63.0, 66.0 MeV; measured fission fragments mass rations and mass-angle distributions using the CUBE spectrometer at 14UD Pelletron facility of ANU-Canberra; deduced mass-asymmetric fission of ¹⁸²Hg compound nucleus at E*=33.6 MeV, and mass-symmetric fission of ¹⁹⁵Hg compound nucleus at all energies.Kinematic reconstruction method. Comparison with results from mass-asymmetric fission of ¹⁸⁰Hg in beta-delayed fission process, and with theoretical predictions.

doi: 10.1103/PhysRevC.91.064605
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2013WI05      Phys.Rev. C 88, 034611 (2013)

E.Williams, D.J.Hinde, M.Dasgupta, R.du Rietz, I.P.Carter, M.Evers, D.H.Luong, S.D.McNeil, D.C.Rafferty, K.Ramachandran, A.Wakhle

Evolution of signatures of quasifission in reactions forming curium

NUCLEAR REACTIONS ²³²Th(¹²C, X)²⁴⁴Cm*, E=61-94 MeV; ²⁰⁸Pb(²⁸Si, X)²³⁶Cm*, E=138-188 MeV; ²⁰⁶Pb(³⁰Si, X)²³⁶Cm*, E=135-198 MeV; ²⁰⁸Pb(³⁰Si, X)²³⁸Cm*, E=154-167 MeV; ²⁰²Hg(³²S, X)²³⁴Cm*, E=157-191 MeV; ¹⁸⁶W(⁴⁸Ti, X)²³⁴Cm*, E=219-235 MeV; ¹⁷⁰Er(⁶⁴Ni, X)²³⁴Cm*, E=280-318 MeV; measured particle spectra, fusion σ(E), angular anisotropies using CUBE detector at Heavy-ion ANU facility; deduced mass-ratio spectra and widths, mass-angle distributions (MAD) as signatures of two-body quasifission. Comparison with Transition-state model and coupled-channel calculations.

doi: 10.1103/PhysRevC.88.034611
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Note: The following list of authors and aliases matches the search parameter D.C.Rafferty: , D.C.RAFFERTY