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NSR database version of April 11, 2024.

Search: Author = M.Dasgupta

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2023JE01      Phys.Lett. B 837, 137641 (2023)

D.Y.Jeung, D.J.Hinde, M.Dasgupta, C.Simenel, E.C.Simpson, K.J.Cook, H.M.Albers, J.Buete, I.P.Carter, Ch.E.Dullmann, J.Khuyagbaatar, B.Kindler, N.Lobanov, B.Lommel, C.Mokry, E.Prasad, J.Runke, C.Sengupta, J.F.Smith, P.Thorle-Pospiech, N.Trautmann, K.Vo-Phuoc, J.Walshe, E.Williams, A.Yakushev

Sequential fission and the influence of 208Pb closed shells on the dynamics of superheavy element synthesis reactions

NUCLEAR REACTIONS 238U, 244Pu, 248Cm, 249Cf(50Ti, F), E ∼ 230 MeV; measured fission fragments. 208Pb; deduced σ, binary quasifission mass spectra, sequential fission survival probabilities. The ANU Heavy Ion Accelerator Facility.

doi: 10.1016/j.physletb.2022.137641
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2023SW01      Phys.Lett. B 837, 137655 (2023)

B.M.A.Swinton-Bland, J.Buete, D.J.Hinde, M.Dasgupta, T.Tanaka, A.C.Berriman, D.Y.Jeung, K.Banerjee, L.T.Bezzina, I.P.Carter, K.J.Cook, C.Sengupta, C.Simenel, E.C.Simpson, M.A.Stoyer

Multi-modal mass-asymmetric fission of 178Pt from simultaneous mass-kinetic energy fitting

NUCLEAR REACTIONS 144Sm(34S, F), E=146 MeV; measured fission fragments. 178Pt; deduced mass-angle distribution (MAD), the total kinetic energy (TKE) of the fission fragments, three fission modes: one mass-symmetric and two mass-asymmetric. The 14UD tandem accelerator at the Australian National University Heavy Ion Accelerator Facility.

doi: 10.1016/j.physletb.2022.137655
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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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2022BE17      Phys.Rev. C 105, 064614 (2022)

A.C.Berriman, D.J.Hinde, D.Y.Jeung, M.Dasgupta, H.Haba, T.Tanaka, K.Banerjee, T.Banerjee, L.T.Bezzina, J.Buete, K.J.Cook, S.Parker-Steele, C.Sengupta, C.Simenel, E.C.Simpson, M.A.Stoyer, B.M.A.Swinton-Bland, E.Williams

Energy dependence of p + 232Th fission mass distributions: Mass-asymmetric standard I and standard II modes, and multichance fission

NUCLEAR REACTIONS 232Th(p, F), E=6.2-28MeV; measured reaction products, fission fragments; deduced fission fragment yields mass distribution. Studied the influence of the multichance fission on the shape of the mass distribution. Comparison to other experimental data and GEF calculations. CUBE spectrometer consisting of large MWPCs at 14UD tandem electrostatic accelerator of the Australian National University Heavy Ion Accelerator Facility.

RADIOACTIVITY 248Cm(SF); measured fission fragments; deduced fission fragment yields mass distribution.

doi: 10.1103/PhysRevC.105.064614
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2022HI12      Phys.Rev. C 106, 064614 (2022)

D.J.Hinde, R.du Rietz, D.Y.Jeung, K.J.Cook, M.Dasgupta, E.C.Simpson, R.G.Thomas, M.Evers, C.J.Lin, D.H.Luong, L.R.Gasques, R.Rafiei, A.Wakhle, C.Simenel

Experimental investigation of the role of shell structure in quasifission mass distributions

NUCLEAR REACTIONS 154Sm, 162Dy, 170Er, 174Yb, 186W, 192Os, 196Pt, 200Hg(48Ti, F), E=198-245 MeV; measured reaction products; deduced fission fragment mass-angle distributions, ratio of the fusion-fission yield to the total fission yield, mass-ratio spectra, compound nuclei forming probability. Pointed that with increasing target (or equivalently compound nucleus)atomic number, a rapid transition occurs from dominant fusion-fission to dominantly quasifission. Comparison to GEF calculations. Position-sensitive multiwire proportional counters (MWPCs) at 14UD tandem electrostatic accelerator (Australian National University).

doi: 10.1103/PhysRevC.106.064614
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2021BA41      Phys.Lett. B 820, 136601 (2021)

K.Banerjee, D.J.Hinde, M.Dasgupta, J.Sadhukhan, E.C.Simpson, D.Y.Jeung, C.Simenel, B.M.A.Swinton-Bland, E.Williams, L.T.Bezzina, I.P.Carter, K.J.Cook, H.M.Albers, Ch.E.Dullmann, J.Khuyagbaatar, B.Kindler, B.Lommel, C.Mokry, E.Prasad, J.Runke, N.Schunck, C.Sengupta, J.F.Smith, P.Thorle-Pospiech, N.Trautmann, K.Vo-Phuoc, J.Walshe, A.Yakushev

Sensitive search for near-symmetric and super-asymmetric fusion-fission of the superheavy element Flerovium (Z=114)

NUCLEAR REACTIONS 208Pb, 244Pu(48Ca, X), 232Th(54Cr, X)Fl, E not given; analyzed available data; deduced masses, σ(θ). Comparison with microscopic calculations of Helmholtz free energy surfaces (FES).

doi: 10.1016/j.physletb.2021.136601
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2021CO11      Phys.Rev. C 104, 024620 (2021)

K.J.Cook, A.Chevis, T.K.Eriksen, E.C.Simpson, T.Kibedi, L.T.Bezzina, A.C.Berriman, J.Buete, I.P.Carter, M.Dasgupta, D.J.Hinde, D.Y.Jeung, P.McGlynn, S.Parker-Steele, B.M.A.Swinton-Bland, T.Tanaka, W.Wojtaczka

High-precision proton angular distribution measurements of 12C (p, p') for the decay branching ratio of the Hoyle state

NUCLEAR REACTIONS 12C(p, p'), E=10.20-10.70 MeV from 14UD electrostatic accelerator at HIAF-ANU facility; measured E(p), I(p), p(θ), differential σ(θ, E) for the first 2+ and second 0+ (Hoyle) state using the Breakup Array for Light Nuclei (BALiN) array of wedge shaped segmented double-sided silicon detectors (DSSDs), configured as two ΔE-E telescopes; deduced total σ(E) for the population of the first 2+ and second 0+ (Hoyle) state in 12C, thick target yields. Discussed radiative width of the Hoyle state, and possible application of measured cross sections for investigating cluster structures in 13N. Relevance to rate of carbon production in stars via radiative decay of the Hoyle state.

doi: 10.1103/PhysRevC.104.024620
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD1006.


2021HI08      Prog.Part.Nucl.Phys. 118, 103856 (2021)

D.J.Hinde, M.Dasgupta, E.C.Simpson

Experimental studies of the competition between fusion and quasifission in the formation of heavy and superheavy nuclei

doi: 10.1016/j.ppnp.2021.103856
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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.


2020BA41      Phys.Rev. C 102, 024603 (2020)

T.Banerjee, D.J.Hinde, D.Y.Jeung, K.Banerjee, M.Dasgupta, A.C.Berriman, L.T.Bezzina, H.M.Albers, Ch.E.Dullmann, J.Khuyagbaatar, B.Kindler, B.Lommel, E.C.Simpson, C.Sengupta, B.M.A.Swinton-Bland, T.Tanaka, A.Yakushev, K.Eberhardt, C.Mokry, J.Runke, P.Thorle-Pospiech, N.Trautmann

Systematic evidence for quasifission in 9Be-, 12C-, and 16O-induced reactions forming 258, 260No

NUCLEAR REACTIONS 238U(9Be, F)247Cm*, E=45-60 MeV; 244U(9Be, F)253Cf*, E=45-60 MeV; 248Cm(9Be, F)257Fm*, E=45-60 MeV; 249Cf(9Be, F)258No*, E=45-60 MeV; 248Cm(12C, F)260No*, E=60.80-89.18 MeV; 244Pu(16O, F)260No*, E=84.90-116.27 MeV; measured fission fragments, fission fragment mass and angular distributions using the CUBE spectrometer consisting of three multiwire proportional counters (MWPCs) at the Heavy Ion Accelerator Facility (HIAF) of the Australian National University; deduced reconstructed fission source velocity distributions, full momentum transfer (FMT) fission differential σ(θ, E), total and FMT fission σ(E), FMT mass-angle distributions (MADs), FMT fission angular anisotropies; analyzed mass-ratio (MR) spectra. 254,256,258,260,262No; deduced spontaneous fission mass-ratio distributions. Comparison with predictions from the transition state model (TSM) calculations for fusion fission reactions.

doi: 10.1103/PhysRevC.102.024603
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD0983.


2020ER03      Phys.Rev. C 102, 024320 (2020)

T.K.Eriksen, T.Kibedi, M.W.Reed, A.E.Stuchbery, K.J.Cook, A.Akber, B.Alshahrani, A.A.Avaa, K.Banerjee, A.C.Berriman, L.T.Bezzina, L.Bignell, J.Buete, I.P.Carter, B.J.Coombes, J.T.H.Dowie, M.Dasgupta, L.J.Evitts, A.B.Garnsworthy, M.S.M.Gerathy, T.J.Gray, D.J.Hinde, T.H.Hoang, S.S.Hota, E.Ideguchi, P.Jones, G.J.Lane, B.P.McCormick, A.J.Mitchell, N.Palalani, T.Palazzo, M.Ripper, E.C.Simpson, J.Smallcombe, B.M.A.Swinton-Bland, T.Tanaka, T.G.Tornyi, M.O.de Vries

Improved precision on the experimental E0 decay branching ratio of the Hoyle state

NUCLEAR REACTIONS 12C(p, p'), E=10.5 MeV; measured electron-positron pairs for E0 transition from the first excited 0+ Hoyle state, and for E2 transition from the first 2+ state, Eγ, (ce)(ce)- and (ce)γ-coin, γ(θ), E(p), I(p) using the superconducting solenoid Super-e pair spectrometer and Si(Li) detector array for electrons and positrons, HPGe detector for γ radiation, and ANU BALiN double sided silicon strip detector array for scattered protons at the 14 UD pelletron tandem accelerator of Australian National University; deduced E0 branching ratio ΓE0π/Γ, reduction in radiative width. Comparison with previous experimental measurements; calculated 3α reaction rate within the temperature range of helium burning red giant stars using the NACRE library value. Possible impact on astrophysical calculations.

doi: 10.1103/PhysRevC.102.024320
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Data from this article have been entered in the XUNDL database. For more information, click here.


2020KH11      Phys.Rev. C 102, 064602 (2020)

J.Khuyagbaatar, A.Yakushev, Ch.E.Dullmann, D.Ackermann, L.-L.Andersson, M.Asai, M.Block, R.A.Boll, H.Brand, D.M.Cox, M.Dasgupta, X.Derkx, A.Di Nitto, K.Eberhardt, J.Even, M.Evers, C.Fahlander, U.Forsberg, J.M.Gates, N.Gharibyan, P.Golubev, K.E.Gregorich, J.H.Hamilton, W.Hartmann, R.-D.Herzberg, F.P.Hessberger, D.J.Hinde, J.Hoffmann, R.Hollinger, A.Hubner, E.Jager, B.Kindler, J.V.Kratz, J.Krier, N.Kurz, M.Laatiaoui, S.Lahiri, R.Lang, B.Lommel, M.Maiti, K.Miernik, S.Minami, A.K.Mistry, C.Mokry, H.Nitsche, J.P.Omtvedt, G.K.Pang, P.Papadakis, D.Renisch, J.B.Roberto, D.Rudolph, J.Runke, K.P.Rykaczewski, L.G.Sarmiento, M.Schadel, B.Schausten, A.Semchenkov, D.A.Shaughnessy, P.Steinegger, J.Steiner, E.E.Tereshatov, P.Thorle-Pospiech, K.Tinschert, T.Torres De Heidenreich, N.Trautmann, A.Turler, J.Uusitalo, M.Wegrzecki, N.Wiehl, S.M.Van Cleve, V.Yakusheva

Search for elements 119 and 120

NUCLEAR REACTIONS 249Bk, 249Cf(50Ti, X)299119*/299120*, E(average)=281.5 MeV; measured evaporation residues (ERs), Eα, correlated ER-α and ER-α12-SF events using UNILAC accelerator, TASCA separator, and Focal plane detector system (FPDS) consisting of double-sided silicon strip (DSSD) detectors, and Si-strip detectors for position and time correlations of events. 295,296119, 295,296120; deduced no evidence for non-random correlated events related to 3n- or 4n-channel deexcitations of the compound nuclei 299119 and 299120, within a sensitivity limit of one event corresponding to σ=65 fb for 249Bk+50Ti reaction and σ=200 fb for 249Cf+50Ti; discussed nonobservation of Z=119 and 120 superheavy elements within the context of the fusion-evaporation reaction mechanism.

doi: 10.1103/PhysRevC.102.064602
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD8036.


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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2020SW02      Phys.Rev. C 102, 054611 (2020)

B.M.A.Swinton-Bland, M.A.Stoyer, A.C.Berriman, D.J.Hinde, C.Simenel, J.Buete, T.Tanaka, K.Banerjee, L.T.Bezzina, I.P.Carter, K.J.Cook, M.Dasgupta, D.Y.Jeung, C.Sengupta, E.C.Simpson, K.Vo-Phuoc

Mass-asymmetric fission of 205, 207, 209Bi at energies close to the fission barrier using proton bombardment of 204, 206, 208Pb

NUCLEAR REACTIONS 204Pb(p, X)205Bi*, E=18.99, 20.99, 22.98, 24.99, 28.00 MeV; 206Pb(p, X)207Bi*, E=20.99, 22.98, 24.98, 28.00 MeV; 208Pb(p, X)209Bi*, E=24.98, 28.00 MeV; measured fission fragments using the CUBE fission spectrometer, with two large area position sensitive multiwire proportional counters (MWPCs), angular distributions at the 14UD tandem accelerator at Australian National University; deduced fission yields, fission mass ratios, fission mass distributions, mass-angle distribution (MAD) as a function of mass ratio, light and heavy fragment peak values. Comparison to previous experimental data, and theoretical calculations using GEF2019/1.3.

doi: 10.1103/PhysRevC.102.054611
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2019BA26      Phys.Rev.Lett. 122, 232503 (2019)

K.Banerjee, D.J.Hinde, M.Dasgupta, E.C.Simpson, D.Y.Jeung, C.Simenel, B.M.A.Swinton-Bland, E.Williams, I.P.Carter, K.J.Cook, H.M.David, C.E.Dullmann, J.Khuyagbaatar, B.Kindler, B.Lommel, E.Prasad, C.Sengupta, J.F.Smith, K.Vo-Phuoc, J.Walshe, A.Yakushev

Mechanisms Suppressing Superheavy Element Yields in Cold Fusion Reactions

NUCLEAR REACTIONS 208Pb(50Ti, X), (48Ca, X), (54Cr, X), E not given; analyzed available data; deduced projectile impact on drastic fall in the symmetric fission yield, which is reflected in the measured mass-angle distribution by the presence of competing fast nonequilibrium deep inelastic and quasifission processes.

doi: 10.1103/PhysRevLett.122.232503
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2019CO06      Phys.Rev.Lett. 122, 102501 (2019)

K.J.Cook, E.C.Simpson, L.T.Bezzina, M.Dasgupta, D.J.Hinde, K.Banerjee, A.C.Berriman, C.Sengupta

Origins of Incomplete Fusion Products and the Suppression of Complete Fusion in Reactions of 7Li

NUCLEAR REACTIONS 209Bi(7Li, X)212Po, E(cm)=30.42-46.46 MeV; measured reaction products, Eα, Iα; deduced σ. Comparison with PACE4 statistical model calculations.

doi: 10.1103/PhysRevLett.122.102501
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD0951.


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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2019KH04      Phys.Rev. C 99, 054306 (2019)

J.Khuyagbaatar, A.Yakushev, Ch.E.Dullmann, D.Ackermann, L.-L.Andersson, M.Asai, M.Block, R.A.Boll, H.Brand, D.M.Cox, M.Dasgupta, X.Derkx, A.Di Nitto, K.Eberhardt, J.Even, M.Evers, C.Fahlander, U.Forsberg, J.M.Gates, N.Gharibyan, P.Golubev, K.E.Gregorich, J.H.Hamilton, W.Hartmann, R.-D.Herzberg, F.P.Hessberger, D.J.Hinde, J.Hoffmann, R.Hollinger, A.Hubner, E.Jager, B.Kindler, J.V.Kratz, J.Krier, N.Kurz, M.Laatiaoui, S.Lahiri, R.Lang, B.Lommel, M.Maiti, K.Miernik, S.Minami, A.Mistry, C.Mokry, H.Nitsche, J.P.Omtvedt, G.K.Pang, P.Papadakis, D.Renisch, J.Roberto, D.Rudolph, J.Runke, K.P.Rykaczewski, L.G.Sarmiento, M.Schadel, B.Schausten, A.Semchenkov, D.A.Shaughnessy, P.Steinegger, J.Steiner, E.E.Tereshatov, P.Thorle-Pospiech, K.Tinschert, T.Torres De Heidenreich, N.Trautmann, A.Turler, J.Uusitalo, D.E.Ward, M.Wegrzecki, N.Wiehl, S.M.Van Cleve, V.Yakusheva

Fusion reaction 48Ca + 249Bk leading to formation of the element Ts (Z=117)

NUCLEAR REACTIONS 249Bk(48Ca, 3n), (48Ca, 4n)293Ts/294Ts, E=252.1, 254.0, 258.0 MeV; measured reaction products, evaporation residues (ER), Eα, Iα, (ER)α-correlated decay chains, and σ using double-sided silicon strip detectors for α detection, TASCA separator for evaporation residue, and multiwire proportional counter for detection of residues at UNILAC accelerator facility of GSI. Comparison with previous experimental data for (ER)α-correlated decay chains from DGFRS-Dubna facility.

RADIOACTIVITY 294Ts, 290Mc, 286Nh, 282Rg, 278Mt, 274Bh, 270Db(α); 293Ts, 289Mc, 285Nh, 281Rg(α); 266Lr, 270Db, 277Mt, 277Hs(SF); measured Eα, Iα, SF events, half-lives. 266Lr, 270Db(α), (SF); measured half-lives and α/SF branching ratios. Comparison with previous experimental data for (ER)α-correlated decay chains from DGFRS-Dubna facility. A=200-240; A=240-260; systematics of α-decay half-lives of isotopes produced in 48Ca+249Bk and 48Ca+249Cf reactions.

doi: 10.1103/PhysRevC.99.054306
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD0944. Data from this article have been entered in the XUNDL database. For more information, click here.


2018CO01      Phys.Rev. C 97, 021601 (2018)

K.J.Cook, I.P.Carter, E.C.Simpson, M.Dasgupta, D.J.Hinde, L.T.Bezzina, S.Kalkal, C.Sengupta, C.Simenel, B.M.A.Swinton-Bland, K.Vo-Phuoc, E.Williams

Interplay of charge clustering and weak binding in reactions of 8Li

NUCLEAR REACTIONS 209Bi(8Li, X), E=38.2-40.9 MeV, [secondary 8Li from primary reaction 9Be(7Li, 8Li)8Be, E=45 MeV using SOLEROO separator at Australian National University]; measured proton, deuteron, triton, α, 7,8Li spectra using two ΔE-E telescopes, energy and angle, αα-, αt-, αd-, and αp-coin; deduced total α production σ, energy averages σ(θ) for singles and coincidence events, reaction Q values, relative energy distribution, 8Li breakup into charged clusters; calculated time of breakup for αt-pairs using classical dynamical model.

doi: 10.1103/PhysRevC.97.021601
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD0896.


2018HI02      Phys.Rev. C 97, 024616 (2018)

D.J.Hinde, D.Y.Jeung, E.Prasad, A.Wakhle, M.Dasgupta, M.Evers, D.H.Luong, R.du Rietz, C.Simenel, E.C.Simpson, E.Williams

Sub-barrier quasifission in heavy element formation reactions with deformed actinide target nuclei

NUCLEAR REACTIONS 232Th(34S, X)266Sg*, E(cm)=143.6, 145.7, 147.9, 150.5, 158.4, 166.7 MeV; 238U(28Si, X)266Sg*, E(cm)=126.9, 129.5, 137.4, 145.7, 151.0, 155.5 MeV; 232Th(30Si, X)262Rf*, E(cm)=128.2, 131.8, 135.9, 139.5, 143.1, 146.7 MeV; 238U(24Mg, X)262Rf*, E(cm)=110.0, 113.2, 116.4, 120.0, 126.3, 129.5 MeV; measured reaction products, fission and quasifission mass and angle distributions (MADs); 232Th(19F, X), E=76.4, 78.3, 80.1, 82.0, 83.8, 85.7, 87.6, 89.4, 91.2, 93.1, 95.0, 96.8, 98.6, 100.5, 102.4, 107.0 MeV; 232Th(32S, X), (19F, X), (16O, X), (12C, X), (11B, X), E/VB=0.8-1.3; 238U(16O, X), (12C, X), (11B, X), E/VB=0.8-1.3; measured angular distribution of mass-symmetric fission events, σ(E) for full momentum transfer (FMT) fission for 19F+232Th reaction. Experiments used CUBE fission spectrometer at the Australian National University 14UD tandem accelerator facility to determine the probabilities of fast and slow quasifission in reactions with prolate deformed actinide nuclei. Relevance to formation of superheavy elements (SHEs) by fusion of two massive nuclei.

doi: 10.1103/PhysRevC.97.024616
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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, MR), 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 MR 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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2017KO02      Phys.Lett. B 764, 265 (2017)

J.Konki, J.Khuyagbaatar, J.Uusitalo, P.T.Greenlees, K.Auranen, H.Badran, M.Block, R.Briselet, D.M.Cox, M.Dasgupta, A.Di Nitto, Ch.E.Dullmann, T.Grahn, K.Hauschild, A.Herzan, R.-D.Herzberg, F.P.Hessberger, D.J.Hinde, R.Julin, S.Juutinen, E.Jager, B.Kindler, J.Krier, M.Leino, B.Lommel, A.Lopez-Martens, D.H.Luong, M.Mallaburn, K.Nishio, J.Pakarinen, P.Papadakis, J.Partanen, P.Peura, P.Rahkila, K.Rezynkina, P.Ruotsalainen, M.Sandzelius, J.Saren, C.Scholey, J.Sorri, S.Stolze, B.Sulignano, Ch.Theisen, A.Ward, A.Yakushev, V.Yakusheva

Towards saturation of the electron-capture delayed fission probability: The new isotopes 240Es and 236Bk

RADIOACTIVITY 240Es(EC), (α), 236Bk(EC) [from 209Bi(34S, 3n)240Es, E=174, 178 MeV]; measured decay products, Eα, Iα; deduced T1/2, branching ratios, electron-capture delayed fission (ECDF) probability. Comparison with available data.

doi: 10.1016/j.physletb.2016.11.038
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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(MR), 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.


2017SI06      Phys.Rev. C 95, 031601 (2017)

C.Simenel, A.S.Umar, K.Godbey, M.Dasgupta, D.J.Hinde

How the Pauli exclusion principle affects fusion of atomic nuclei

NUCLEAR REACTIONS 40Ca(40Ca, X), E(cm)=48-64 MeV; 48Ca(48Ca, X), E(cm)=45-61 MeV; 208Pb(16O, X), E(cm)=65-90 MeV; calculated nucleus-nucleus potentials with and without Pauli exclusion principle, fusion σ(E), FHF and DCFHF σ(E) without couplings. 16O(16O, X), 40Ca(40Ca, X), 48Ca(40Ca, X), 208Pb(48Ca, X); calculated nucleus-nucleus potentials without (FHF) and with (DCFHF) Pauli exclusion principle. Coupled-channel calculations using CCFULL code, and Woods-Saxon fits of the Frozen Hartree-Fock (FHF) and density-constrained frozen Hartree-Fock (DCFHF) potentials. Comparison with experimental data.

doi: 10.1103/PhysRevC.95.031601
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2016CO11      Phys.Rev. C 93, 064604 (2016)

K.J.Cook, E.C.Simpson, D.H.Luong, S.Kalkal, M.Dasgupta, D.J.Hinde

Importance of lifetime effects in breakup and suppression of complete fusion in reactions of weakly bound nuclei

NUCLEAR REACTIONS 144Sm(9Be, X), E=25-28 MeV; 168Er(9Be, X), E=28-31 MeV; 196Pt, 186W(9Be, X), E=28-34 MeV; 208Pb, 209Bi(9Be, X), E=28-37 MeV; analyzed previous extensive sub-barrier breakup measurements (see 2010Ra03 reference) at 14UD electrostatic accelerator of ANU by explicit inclusion of excitation energies and lifetimes of unbound resonances, and improved efficiency determination of the BALiN detector array; deduced Q-values, relative energy, angular correlation of breakup modes, below-barrier near-target breakup probability versus distance of closest approach, above-barrier complete fusion suppression and fraction of incomplete fusion using classical dynamical model. Systematics of complete fusion suppression.

doi: 10.1103/PhysRevC.93.064604
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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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2016LI42      Phys.Rev. C 94, 024616 (2016)

J.F.Liang, J.M.Allmond, C.J.Gross, P.E.Mueller, D.Shapira, R.L.Varner, M.Dasgupta, D.J.Hinde, C.Simenel, E.Williams, K.Vo-Phuoc, M.L.Brown, I.P.Carter, M.Evers, D.H.Luong, T.Ebadi, A.Wakhle

Examining the role of transfer coupling in sub-barrier fusion of 46, 50Ti + 124Sn

NUCLEAR REACTIONS 46,50Ti(124Sn, X), E(cm)=120-154 MeV; 124Sn(46Ti, X), (50Ti, X), E(cm)=116-140 MeV; measured evaporation residues (ERs), fusion σ(E) for the 124Sn beam at HRIBF-ORNL facility, and 46,50Ti beams at ANU 14UD tandem accelerator facility. Comparison of experimental reduced σ(E) values and reduced barrier distributions for 40,48Ca+96Zr, 40,48Ca+124Sn, 40,48Ca+132Sn, 46,50Ti+124Sn, 58,64Ni+124Sn 58,64Ni+132Sn and 64Ni+118Sn reactions. Comparison with coupled-channel calculations using CCFULL code.

doi: 10.1103/PhysRevC.94.024616
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2240.


2016PR03      Phys.Rev. C 93, 024607 (2016)

E.Prasad, A.Wakhle, D.J.Hinde, E.Williams, M.Dasgupta, M.Evers, D.H.Luong, G.Mohanto, C.Simenel, K.Vo-Phuoc

Exploring quasifission characteristics for 34S + 232Th forming 266Sg

NUCLEAR REACTIONS 232Th(32S, X)266Sg*, E=164.7, 167.2, 169.7, 172.7, 181.6, 191.2 MeV; measured reaction products, fission events, unsymmetrized distribution of fragments, average mass ratio of heavy asymmetric fragments to symmetric fragments as function of E/VB, angular momentum-distributions, fragment-fragment mass angle distribution (MAD) plots, mass drift as function of time. Monte Carlo simulations for mass angle distribution (MAD) plots.

doi: 10.1103/PhysRevC.93.024607
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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, 18O, 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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2016SI04      Phys.Rev. C 93, 024605 (2016)

E.C.Simpson, K.J.Cook, D.H.Luong, S.Kalkal, I.P.Carter, M.Dasgupta, D.J.Hinde, E.Williams

Disintegration locations in 7Li → 8Be transfer-triggered breakup at near-barrier energies

NUCLEAR REACTIONS 58Ni(7Li, X), E=13.1 MeV; measured spectra of charged particles, relative energy distributions for the two α particles from 7Li proton pickup, αα-coin and αα(θ) from breakup process using the Breakup Array for Light Nuclei (BALiN) at 14UD tandem accelerator of the Australian National University; deduced large angular separations of the α fragments. Data consistent with disintegration of 0+ ground state and 2+ resonance of 8Be. Transfer-induced breakup reactions. Comparison with classical dynamical model simulations using a modified version of PLATYPUS code.

doi: 10.1103/PhysRevC.93.024605
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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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2015KH03      Phys.Rev. C 91, 054608 (2015)

J.Khuyagbaatar, D.J.Hinde, I.P.Carter, M.Dasgupta, Ch.E.Dullmann, M.Evers, D.H.Luong, R.du Rietz, A.Wakhle, E.Williams, A.Yakushev

Experimental study of the quasifission, fusion-fission, and de-excitation of Cf compound nuclei

NUCLEAR REACTIONS 206Pb(36S, X)242Cf*, 208Pb(34S, X)242Cf*, 198Pt(44Ca, X)242Cf*, 208Pb(36S, X)244Cf*, 235U(12C, X)247Cf*, at E*=28-52 MeV; measured fission fragment spectra, (fragment)(fragment)-coin, mass and angle distributions of fission fragments at Heavy Ion Accelerator Facility of the Australian National University; deduced mean squared angular momenta, (σRMSgaus), mass distribution of fission fragments of 244Cf* and 242Cf* following electron capture decay of 244Es and 242Es; deduced fractions of the mass asymmetric fission components, survival probabilities, shell effects in slow quasifission mass distributions. Coupled-channel calculations using CCFULL computer code. Comparison with calculations using general fission model computer code GEF.

doi: 10.1103/PhysRevC.91.054608
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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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2014KH04      Phys.Rev.Lett. 112, 172501 (2014)

J.Khuyagbaatar, A.Yakushev, C.E.Dullmann, D.Ackermann, L.-L.Andersson, M.Asai, M.Block, R.A.Boll, H.Brand, D.M.Cox, M.Dasgupta, X.Derkx, A.Di Nitto, K.Eberhardt, J.Even, M.Evers, C.Fahlander, U.Forsberg, J.M.Gates, N.Gharibyan, P.Golubev, K.E.Gregorich, J.H.Hamilton, W.Hartmann, R.-D.Herzberg, F.P.Hessberger, D.J.Hinde, J.Hoffmann, R.Hollinger, A.Hubner, E.Jager, B.Kindler, J.V.Kratz, J.Krier, N.Kurz, M.Laatiaoui, S.Lahiri, R.Lang, B.Lommel, M.Maiti, K.Miernik, S.Minami, A.Mistry, C.Mokry, H.Nitsche, J.P.Omtvedt, G.K.Pang, P.Papadakis, D.Renisch, J.Roberto, D.Rudolph, J.Runke, K.P.Rykaczewski, L.G.Sarmiento, M.Schadel, B.Schausten, A.Semchenkov, D.A.Shaughnessy, P.Steinegger, J.Steiner, E.E.Tereshatov, P.Thorle-Pospiech, K.Tinschert, T.Torres De Heidenreich, N.Trautmann, A.Turler, J.Uusitalo, D.E.Ward, M.Wegrzecki, N.Wiehl, S.M.Van Cleve, V.Yakusheva

48Ca + 249Bk Fusion Reaction Leading to Element Z=117: Long-Lived α-Decaying 270Db and Discovery of 266Lr

NUCLEAR REACTIONS 249Bk(48Ca, X)294Ts, E=268.3, 270.2, 274.1 MeV; measured reaction products, Eα, Iα; deduced σ. Comparison with experimental data.

RADIOACTIVITY 294Ts, 290Mc, 286Nh, 282Rg, 278Mt, 274Bh, 270Db, 266Lr(α); measured decay products, Eα, Iα; deduced T1/2. Comparison with experimental data.

doi: 10.1103/PhysRevLett.112.172501
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD0731. Data from this article have been entered in the XUNDL database. For more information, click here.


2014WA41      Phys.Rev.Lett. 113, 182502 (2014)

A.Wakhle, C.Simenel, D.J.Hinde, M.Dasgupta, M.Evers, D.H.Luong, R.du Rietz, E.Williams

Interplay between Quantum Shells and Orientation in Quasifission

NUCLEAR REACTIONS 238U(40Ca, X), E=225.4 MeV; measured reaction products, fission fragments; deduced fragment yields, mass-angle distribution σ(θ). Comparison with microscopic quantum calculations.

doi: 10.1103/PhysRevLett.113.182502
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2013DU17      Phys.Rev. C 88, 054618 (2013)

R.du Rietz, E.Williams, D.J.Hinde, M.Dasgupta, M.Evers, C.J.Lin, D.H.Luong, C.Simenel, A.Wakhle

Mapping quasifission characteristics and timescales in heavy element formation reactions

NUCLEAR REACTIONS 186W(16O, X)202Pb*, E(cm)=102.1 MeV; 192Os(16O, X)208Po*, E(cm)=102.3 MeV; 178Hf(24Mg, X)202Po*, E(cm)=102.1 MeV; 168Er(34S, X)202Po*, E(cm)=128.4 MeV; 144Sm(48Ti, X)192Po*, E(cm)=164.2 MeV; 196Pt(16O, X)212Rn*, E(cm)=102.0 MeV; 208Pb(12C, X)220Ra*, E(cm)=59.9 MeV; 200Hg(16O, X)216Ra*, E(cm)=102.8 MeV; 178Hf(32S, X)210Ra*, E(cm)=138.3 MeV; 162Dy(48Ti, X)210Ra*, E(cm)=168.9 MeV; 208Pb(16O, X)224Th*, E(cm)=103.0 MeV; 186W(34S, X)220Th*, E(cm)=144.5 MeV; 170Er(48Ti, X)218Th*, E(cm)=174.8 MeV; 154Sm(64Ni, X)218Th*, E(cm)=200.6 MeV; 174Yb(48Ti, X)222U*, E(cm)=178.1 MeV; 194Pt(32S, X)226Pu*, E(cm)=144.4 MeV; 178Hf(48Ti, X)226Pu*, E(cm)=180.8 MeV; 208Pb(30Si, X)238Cm*, E(cm)=134.7 MeV; 202Hg(32S, X)234Cm*, E(cm)=149.6 MeV; 186W(48Ti, X)234Cm*, E(cm)=186.3 MeV; 170Er(64Ni, X)234Cm*, E(cm)=216.2 MeV; 238U(12C, X)250Cf*, E(cm)=66.3 MeV; 232Th(18O, X)250Cf*, E(cm)=84.9 MeV; 208Pb(32S, X)240Cf*, E(cm)=149.9 MeV; 198Pt(40Ca, X)238Cf*, E(cm)=188.7 MeV; 192Os(48Ti, X)240Cf*, E(cm)=195.0 MeV; 238U(16O, X)254Fm*, E(cm)=103.5 MeV; 196Pt(48Ti, X)244Fm*, E(cm)=193.3 MeV; 208Pb(40Ca, X)248No*, E(cm)=190.2 MeV; 200Hg(48Ti, X)248No*, E(cm)=197.5 MeV; 184W(64Ni, X)248No*, E(cm)=252.3 MeV; 238U(24Mg, X)262Rf*, E(cm)=129.3 MeV; 232Th(30Si, X)262Rf*, E(cm)=144.0 MeV; 208Pb(48Ti, X)256Rf*, E(cm)=210.6 MeV; 192Os(64Ni, X)256Rf*, E(cm)=239.2 MeV; 238U(28Si, X)266Sg*, E(cm)=150.7 MeV; 232Th(34S, X)266Sg*, E(cm)=166.7 MeV; 198Pt(64Ni, X)262Sg*, E(cm)=241.7 MeV; 232Th(40Ca, X)272Ds*, E(cm)=211.5 MeV; 208Pb(64Ni, X)272Ds*, E(cm)=259.5 MeV; 238U(40Ca, X)278Cn*, E(cm)=210.7 MeV; 238U(48Ti, X)286Fl*, E(cm)=214.6 MeV; measured reaction products using CUBE spectrometer of multiwire proportional counters (MWPCs), mass-angle distributions (MAD) at ANU's Heavy Ion accelerator facility; deduced systematic dependence of quasifission characteristics as a function of identity of colliding nuclei, entrance channel and compound nucleus fissilities, effects of nuclear structure at lower beam energies. Relevance to formation of superheavy elements.

doi: 10.1103/PhysRevC.88.054618
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2013LU13      Phys.Rev. C 88, 034609 (2013)

D.H.Luong, M.Dasgupta, D.J.Hinde, R.du Rietz, R.Rafiei, C.J.Lin, M.Evers, A.Diaz-Torres

Predominance of transfer in triggering breakup in sub-barrier reactions of 6, 7Li with 144Sm, 207, 208Pb, and 209Bi

NUCLEAR REACTIONS 207,208Pb, 209Bi(6Li, X), E=26.5, 29.0 MeV; 144Sm(7Li, X), E=21.5, 24.0 MeV; 208Pb, 209Bi(7Li, X), E=24.0, 29.0 MeV; 207Pb(7Li, X), E=24.0, 29.0, 26.5 MeV; measured spectra of charged breakup fragments in binary coincidence mode using BALIN detector array at ANU Heavy Ion Accelerator Facility; deduced Q-value spectra of α+p, α+d, α+t, α+α modes of breakup of 6,7Li, relative time scales and relative energy spectra of breakup fragments, relative probabilities of major breakup modes. Dominance of nucleon transfer-initiated breakup.

doi: 10.1103/PhysRevC.88.034609
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2013SI33      Phys.Rev. C 88, 064604 (2013)

C.Simenel, M.Dasgupta, D.J.Hinde, E.Williams

Microscopic approach to coupled-channels effects on fusion

NUCLEAR REACTIONS 40Ca(40Ca, X), E(cm)=49-61 MeV; 56Ni(56Ni, X), E(cm)=97-110 MeV; calculated differential σ(θ, E), σ(E)(fusion), strength functions for giant resonances (GMR and GQR), energies and deformations of first 2+, first 3- states and GQR, quadrupole phonon couplings, isodensity contours; deduced effect of collective vibrations on fusion cross sections, lowering of barrier heights. Coupled-channel (CC) calculations using Hartree-Fock (HF) theory, and frozen HF method, together with TDHF computation of properties of low-lying vibrational states and giant resonances.

doi: 10.1103/PhysRevC.88.064604
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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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2012GO18      J.Phys.(London) G39, 115103 (2012)

P.R.S.Gomes, D.R.Otomar, T.Correa, L.F.Canto, J.Lubian, R.Linares, D.H.Luong, M.Dasgupta, D.J.Hinde, M.S.Hussein

Complete fusion enhancement and suppression of weakly bound nuclei at near barrier energies

NUCLEAR REACTIONS 209Bi(6Li, X), (7Li, X), E not given; 144Sm(7Li, X), E∼25 MeV; analyzed available data; calculated the ratio between the complete fusion σ, dynamic polarization potential. Comparison with available data.

doi: 10.1088/0954-3899/39/11/115103
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2012LI03      Phys.Rev. C 85, 014611 (2012); Erratum Phys.Rev. C 96, 029901 (2017)

C.J.Lin, R.du Rietz, D.J.Hinde, M.Dasgupta, R.G.Thomas, M.L.Brown, M.Evers, L.R.Gasques, M.D.Rodriguez

Systematic behavior of mass distributions in 48Ti-induced fission at near-barrier energies

NUCLEAR REACTIONS 144,154Sm, 162Dy, 174Yb, 186W, 192Os, 196Pt, 200Hg, 208Pb(48Ti, F), E=206-296 MeV; measured fission fragment spectra (fragment)(fragment)-coin, fission yields; deduced mass-ratio distributions, mass widths as functions of excitation energy of compound nucleus, and excitation energies at saddle and scission points, mass-width enhancement factors. Comparison with saddle-point and scission-point model calculations.

doi: 10.1103/PhysRevC.85.014611
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2011DU02      Phys.Rev.Lett. 106, 052701 (2011)

R.du Rietz, D.J.Hinde, M.Dasgupta, R.G.Thomas, L.R.Gasques, M.Evers, N.Lobanov, A.Wakhle

Predominant Time Scales in Fission Processes in Reactions of S, Ti and Ni with W: Zeptosecond versus Attosecond

NUCLEAR REACTIONS 184W(64Ni, F), E=310-341 MeV; 186W(48Ti, F), E= 220-260 MeV; 186W(34S, F), E=149-189 MeV; measured quasifission products; deduced mass-angle distributions, time scale differences. Comparison with CCFULL calculations.

doi: 10.1103/PhysRevLett.106.052701
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2011EV01      Phys.Rev. C 84, 054614 (2011)

M.Evers, M.Dasgupta, D.J.Hinde, D.H.Luong, R.Rafiei, R.du Rietz, C.Simenel

Cluster transfer in the reaction 16O + 208Pb at energies well below the fusion barrier: A possible doorway to energy dissipation

NUCLEAR REACTIONS 208Pb(16O, X), E(c.m.)=73.28 MeV; 181Ta(12C, X), E=53.79 MeV; measured particle spectra of projectile-like fragments, transfer probabilities for 1p, 2p and α particle transfers. Comparison with TDHF calculations.

doi: 10.1103/PhysRevC.84.054614
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2011RA17      Int.J.Mod.Phys. E20, 835 (2011)

R.Rafiei, D.H.Luong, D.J.Hinde, M.Dasgupta, R.Du Rietz

Complete characterization of breakup of 9Be by α-α coincidence measurements

NUCLEAR REACTIONS 209Bi, 208Pb, 196Pt, 186W, 168Er, 144Sm(9Be, xα), E not given; measured reaction products; deduced breakup probabilities.

doi: 10.1142/S0218301311018794
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2010DA04      Phys.Rev. C 81, 024608 (2010)

M.Dasgupta, D.J.Hinde, S.L.Sheehy, B.Bouriquet

Suppression of fusion by breakup: Resolving the discrepancy between the reactions of 9Be with 208Pb and 209Bi

NUCLEAR REACTIONS 208Pb, 209Bi(9Be, xn)211Rn/212Rn/213Rn/214Rn/212Fr/213Fr/214Fr/215Fr/216Fr, E=44.0, 50.0, 60.0 MeV; measured α and fragment spectra; deduced complete fusion σ. Discussed discrepancies in previous cross section data for similar reactions.

doi: 10.1103/PhysRevC.81.024608
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO1840.


2010DA15      Nucl.Phys. A834, 147c (2010)

M.Dasgupta, L.R.Gasques, D.H.Luong, R.du Rietz, R.Rafiei, D.J.Hinde, C.J.Lin, M.Evers, A.Diaz-Torres

Reaction dynamics of weakly bound nuclei at near-barrier energies

NUCLEAR REACTIONS 208Pb, 209Bi(6Li, X), (7Li, X), (9Be, X), (10B, X), (11B, X), E not given; analyzed fusion suppression factor, systematics. Found simple dependency and relation to break-up.

doi: 10.1016/j.nuclphysa.2009.12.025
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2010EV01      Phys.Rev. C 81, 014602 (2010)

M.Evers, D.J.Hinde, M.Dasgupta, D.H.Luong, R.Rafiei, R.du Rietz

Coulomb nuclear interference as a tool to investigate the nuclear potential

NUCLEAR REACTIONS 208Pb(16O, X), E(cm)=50-75 MeV; measured particle spectra. 208Pb; deduced excitation function of octupole vibrational state at 2.615 MeV; analyzed earlier quasielastic scattering excitation function data, and coulomb nuclear nuclear interface (CNI) using coupled-channel calculations.

doi: 10.1103/PhysRevC.81.014602
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2010HI02      Phys.Rev. C 81, 064611 (2010)

D.J.Hinde, M.Dasgupta

Systematic analysis of above-barrier fusion of 9, 10, 11Be+209Bi

NUCLEAR REACTIONS 209Bi(9Be, X), (10Be, X), (11Be, X), E(cm)=35-65 MeV; analyzed fusion σ, evaporation residues σ using the single barrier penetration model (SBPM) and the coupled-channels (CC) method. Cross sections for 211,212,213,214At, 215,216,217Fr, 214,215Rn formed in xn, pxn and αxn channels. Comparison with fusion cross section data from 208Pb(9Be, xn), E=20-50 MeV reaction.

doi: 10.1103/PhysRevC.81.064611
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2010HI03      Nucl.Phys. A834, 117c (2010)

D.J.Hinde, M.Dasgupta, A.Diaz-Torres, M.Evers

Quantum coherence and decoherence in low energy nuclear collisions: from superposition to irreversibility

doi: 10.1016/j.nuclphysa.2009.12.019
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2010RA03      Phys.Rev. C 81, 024601 (2010)

R.Rafiei, R.du Rietz, D.H.Luong, D.J.Hinde, M.Dasgupta, M.Evers, A.Diaz-Torres

Mechanisms and systematics of breakup in reactions of 9Be at near-barrier energies

NUCLEAR REACTIONS 208Pb, 209Bi(9Be, X), E=28-40 MeV; 186W, 196Pt(9Be, X), E=25-37 MeV; 144Sm, 168Er(9Be, X), E=25-34 MeV; measured particle spectra, reaction Q-values; deduced near-barrier breakup yields, breakup probability, breakup modes, and energy correlation of fragments. Mechanisms and systematics of breakup in reactions. Monte Carlo simulation of 8Be g.s. decay.

doi: 10.1103/PhysRevC.81.024601
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2009GA07      Phys.Rev. C 79, 034605 (2009)

L.R.Gasques, D.J.Hinde, M.Dasgupta, A.Mukherjee, R.G.Thomas

Suppression of complete fusion due to breakup in the reactions 10, 11B + 209Bi

NUCLEAR REACTIONS 209Bi(10B, X), (11B, X)209Rn/210Rn/211Rn/212Rn/213Rn/213Ra/214Ra/215Ra/216Ra/217Ra/210Po/211Po/210At/211At/212At/213At/, E(cm)=52-72 MeV; measured Eα, σ, complete fusion cross section, fission σ, summed σ for (xn), summed σ for (pxn), summed σ for (xn), summed σ for (αxn), summed σ for (xn); deduced complete fusion suppression factors and approximate fraction of incomplete fusion as a function of breakup threshold. Comparisons with cross sections for 186W(30Si, X) reaction. 209Bi(10B, X), (11B, X), E=5-7.5 MeV/nucleon; 209Bi(7Li, X), (6Li, X), E=3.9-7.5 MeV/nucleon; 209Bi(α, X), E=7.5-9.3 MeV/nucleon; deduced empirical fission probabilities. Single-barrier penetration model (SBPM) calculations using Sao Paulo potential of fusion process without breakup, and statistical model calculations.

doi: 10.1103/PhysRevC.79.034605
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC1675.


2008DI20      Phys.Rev. C 78, 064604 (2008)

A.Diaz-Torres, D.J.Hinde, M.Dasgupta, G.J.Milburn, J.A.Tostevin

Dissipative quantum dynamics in low-energy collisions of complex nuclei

doi: 10.1103/PhysRevC.78.064604
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2008EV01      Phys.Rev. C 78, 034614 (2008)

M.Evers, M.Dasgupta, D.J.Hinde, L.R.Gasques, M.L.Brown, R.Rafiei, R.G.Thomas

Systematic study of the nuclear potential diffuseness through high precision back-angle quasi-elastic scattering

NUCLEAR REACTIONS 144,154Sm, 166Er, 186W, 197Au, 208Pb(16O, 16O), E=17-26 MeV; measured yields, σ(θ), diffuseness parameter. Coupled-channel calculations.

doi: 10.1103/PhysRevC.78.034614
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2008HI07      Phys.Rev.Lett. 100, 202701 (2008)

D.J.Hinde, R.G.Thomas, R.du Rietz, A.Diaz-Torres, M.Dasgupta, M.L.Brown, M.Evers, L.R.Gasques, R.Rafiei, M.D.Rodriguez

Disentangling Effects of Nuclear Structure in Heavy Element Formation

NUCLEAR REACTIONS 186W(46Ti, X), 184W(48Ti, X), 182W(50Ti, X), E=222-241 MeV; measured232Cm compound nucleus mass-angle distributions, mass ratio distributions, fission cross sections; model independent analysis; shell structure effects; comparison with FRLDM calculations.

doi: 10.1103/PhysRevLett.100.202701
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2008HI14      Phys.Rev.Lett. 101, 092701 (2008)

D.J.Hinde, R.du Rietz, M.Dasgupta, R.G.Thomas, L.R.Gasques

Two Distinct Quasifission Modes in the 32S + 232Th Reaction

NUCLEAR REACTIONS 232Th(32S, X)264Hs, E=157.8-195.0 MeV; measured absolute σ, fission fragmentσ, σ(θ) and anisotropy, mass-angle and mass-ratio distributions, barrier distributions; comparison with transition state model, Coupled channel calculations.

doi: 10.1103/PhysRevLett.101.092701
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2008RA07      Phys.Rev. C 77, 024606 (2008)

R.Rafiei, R.G.Thomas, D.J.Hinde, M.Dasgupta, C.R.Morton, L.R.Gasques, M.L.Brown, M.D.Rodriguez

Strong evidence for quasifission in asymmetric reactions forming 202Po

NUCLEAR REACTIONS 186Os(16O, X)202Po, E=74-105 MeV; 178Hf(24Mg, X)202Po, E=106-144 MeV; 168Er(34S, X)202Po, E=141-174 MeV; 154Sm(48Ti, X)202Po, E=198-235 MeV; measured mass-angle correlations, mass ratio distributions, cross sections.

doi: 10.1103/PhysRevC.77.024606
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2008TH01      Phys.Rev. C 77, 034610 (2008)

R.G.Thomas, D.J.Hinde, D.Duniec, F.Zenke, M.Dasgupta, M.L.Brown, M.Evers, L.R.Gasques, M.D.Rodriguez, A.Diaz-Torres

Entrance channel dependence of quasifission in reactions forming 220Th

NUCLEAR REACTIONS 204Pb(16O, X), E=1-1.26 MeV; 186W(34S, X), E=0.95-1.25, 188.9 MeV; 166,170Er(48Ti, X), (50Ti, X), E=0.95-1.25, 208.0, 245.0 MeV; measured mass-angle correlations, mass ratio distributions, standard deviation of fission fragments.

doi: 10.1103/PhysRevC.77.034610
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2007DA26      Nucl.Phys. A787, 144c (2007)

M.Dasgupta, D.J.Hinde, A.Mukherjee, J.O.Newton

New challenges in understanding heavy ion fusion

NUCLEAR REACTIONS 208Pb(12C, X), E(cm)=50-90 MeV; analyzed σ(θ), fusion σ. 204,208Pb(16O, X), E not given; analyzed fusion σ. Coupled channel model. Sub-barrier and incomplete fusion discussed.

doi: 10.1016/j.nuclphysa.2006.12.025
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2007DI08      Phys.Rev.Lett. 98, 152701 (2007)

A.Diaz-Torres, D.J.Hinde, J.A.Tostevin, M.Dasgupta, L.R.Gasques

Relating Breakup and Incomplete Fusion of Weakly Bound Nuclei through a Classical Trajectory Model with Stochastic Breakup

NUCLEAR REACTIONS 208Pb(8Be, X), (9Be, X), E(cm) ≈ 40-60 MeV; calculated complete and incomplete fusion σ. Three-dimensional classical dynamical model, no-capture breakup.

doi: 10.1103/PhysRevLett.98.152701
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2007GA39      Phys.Rev. C 76, 024612 (2007)

L.R.Gasques, M.Evers, D.J.Hinde, M.Dasgupta, P.R.S.Gomes, R.M.Anjos, M.L.Brown, M.D.Rodriguez, R.G.Thomas, K.Hagino

Systematic study of the nuclear potential through high precision back-angle quasi-elastic scattering measurements

NUCLEAR REACTIONS 170Er, 186W, 197Au, 208Pb(32S, X), E=90-155 MeV; measured quasi-elastic scattering excitation functions. Compared results to single and coupled channel calculations.

doi: 10.1103/PhysRevC.76.024612
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2007HI04      Phys.Rev. C 75, 054603 (2007)

D.J.Hinde, M.Dasgupta, N.Herrald, R.G.Neilson, J.O.Newton, M.A.Lane

Isotopic dependence of fusion barrier energies in reactions forming heavy elements

NUCLEAR REACTIONS 208Pb(32S, X)240Cf, 206Pb(34S, X)240Cf, 204Pb(36S, X)240Cf, E=152-212 MeV; measured σ, fusion excitation functions, fission anisotropies. Deduced fusion barried energy systematics.

doi: 10.1103/PhysRevC.75.054603
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2007HI06      Phys.Rev. C 76, 014617 (2007)

D.J.Hinde, R.L.Ahlefeldt, R.G.Thomas, K.Hagino, M.L.Brown, M.Dasgupta, M.Evers, L.R.Gasques, M.D.Rodriguez

Probing the tail of the nuclear potential between identical nuclei with quasi-elastic Mott scattering

NUCLEAR REACTIONS 58Ni(58Ni, 58Ni), E=260=220 MeV; measured angular distributions. Deduced Mott oscillations.

doi: 10.1103/PhysRevC.76.014617
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2007HI07      Nucl.Phys. A787, 176c (2007)

D.J.Hinde, M.Dasgupta

Insights into the dynamics of fusion forming heavy elements

NUCLEAR REACTIONS 204Pb(16O, X)220Th, 180Hf(40Ar, X)220Th, 172Yb(48Ca, X)220Th, 138Ba(82Se, X)220Th, 96Zr(124Sn, X)220Th, E*=10-75 MeV; analyzed σ. 134,138Ba(82Se, X), 154Sm(60Ni, X), (64Ni, X), 90,92,94,96Zr(124Sn, X), 176,178,180Hf(40Ar, X), 204Pb(16O, X), 182W(32S, X), 104Ru(110Pd, X), 172,173Yb(48Ca, X), E not given; analyzed Po, Rn, Ra, Th isotopes evaporation residue formation σ. 100Mo(110Pd, X), E(cm)=195-265 MeV; analyzed σ. Coupled channels analysis. Compound nucleus, evaporation residue formation, fusion barrier and reaction mechanism discussed.

doi: 10.1016/j.nuclphysa.2006.12.029
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2007MU06      Phys.Rev. C 75, 044608 (2007)

A.Mukherjee, D.J.Hinde, M.Dasgupta, K.Hagino, J.O.Newton, R.D.Butt

Failure of the Woods-Saxon nuclear potential to simultaneously reproduce precise fusion and elastic scattering measurements

NUCLEAR REACTIONS 208Pb(12C, X), E(cm)=58-94 MeV; measured fusion, fission, and evaporation residue σ; deduced barrier distribution. Comparison with model predictions.

doi: 10.1103/PhysRevC.75.044608
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD0476.


2006GA40      Phys.Rev.C 74, 064615 (2006)

L.R.Gasques, M.Dasgupta, D.J.Hinde, T.Peatey, A.Diaz-Torres, J.O.Newton

Isomer ratio measurements as a probe of the dynamics of breakup and incomplete fusion

NUCLEAR REACTIONS 209Bi(6Li, X)212At, E=28-48 MeV; 209Bi(7Li, X)212At/211Po, E=26-52 MeV; 208Pb(9Be, X)211Po, E=36-51 MeV; measured ground and isomeric state σ; deduced angular momentum distribution, related reaction mechanism features.

doi: 10.1103/PhysRevC.74.064615
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO1663.


2006GO10      Phys.Lett. B 634, 356 (2006)

P.R.S.Gomes, I.Padron, E.Crema, O.A.Capurro, J.O.Fernandez Niello, G.V.Marti, A.Arazi, M.Trotta, J.Lubian, M.E.Ortega, A.J.Pacheco, M.D.Rodriguez, J.E.Testoni, R.M.Anjos, L.C.Chamon, M.Dasgupta, D.J.Hinde, K.Hagino

Disentangling the reaction mechanism of weakly bound nuclei

NUCLEAR REACTIONS 9Be(144Sm, X), E=30-44 MeV; measured delayed Eγ, Iγ; deduced total-, complete-, incomplete-fusion and inelastic σ, total fusion suppression factor, reaction mechanism. Comparison with coupled-channels model calculations.

doi: 10.1016/j.physletb.2006.02.005
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO1435.


2006GO12      Phys.Rev. C 73, 034610 (2006)

I.I.Gontchar, D.J.Hinde, M.Dasgupta, C.R.Morton, J.O.Newton

Semi-microscopic calculations of the fusion barrier distributions for reactions involving deformed target nuclei

NUCLEAR REACTIONS 154Sm, 186W, 238U(16O, X), E(cm) ≈ 50-90 MeV; 168Er(34S, X), E(cm) ≈ 110-130 MeV; 232Th(19F, X), E(cm) ≈ 80-100 MeV; 238U, 232Th(12C, X), E(cm) ≈ 50-70 MeV; calculated fusion barrier distributions; deduced finite-size effects. Double-folding model.

doi: 10.1103/PhysRevC.73.034610
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2006GO19      Phys.Rev. C 73, 064606 (2006)

P.R.S.Gomes, I.Padron, E.Crema, O.A.Capurro, J.O.Fernandez Niello, A.Arazi, G.V.Marti, J.Lubian, M.Trotta, A.J.Pacheco, J.E.Testoni, M.D.Rodriguez, M.E.Ortega, L.C.Chamon, R.M.Anjos, R.Veiga, M.Dasgupta, D.J.Hinde, K.Hagino

Comprehensive study of reaction mechanisms for the 9Be + 144Sm system at near- and sub-barrier energies

NUCLEAR REACTIONS 144Sm(9Be, 9Be), E=33-41 MeV; measured elastic σ(θ). 144Sm(9Be, n), (9Be, 2n), (9Be, 3n), (9Be, 4n), (9Be, np), (9Be, 2np), E=30-44 MeV; 144Sm(9Be, X)147Gd, E=3-44 MeV; measured σ; deduced complete and incomplete fusion σ, reaction σ. Delayed x-ray detection technique, comparison with model predictions.

doi: 10.1103/PhysRevC.73.064606
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO1435.


2006GO28      Phys.Atomic Nuclei 69, 1428 (2006)

I.I.Gontchar, M.Dasgupta, D.J.Hinde, J.O.Newton

The Finite Size Effects in Fusion of Deformed Nuclei at Incident Energies near the Barrier

NUCLEAR REACTIONS 154Sm, 168Er, 186W, 238U(16O, X), 168Er(34S, X), 238U, 232Th(12C, X), E not given; calculated angular-dependent fusion barrier energies, finite-size effects. 154Sm, 186W(16O, X), E ≈ threshold; calculated fusion barrier distributions.

doi: 10.1134/S1063778806080230
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2006WA09      Phys.Rev. C 73, 034607 (2006)

K.Washiyama, K.Hagino, M.Dasgupta

Probing surface diffuseness of nucleus-nucleus potential with quasielastic scattering at deep sub-barrier energies

NUCLEAR REACTIONS 197Au, 208Pb(32S, X), (34S, X), E(cm) ≈ 116-140 MeV; 154Sm, 186W, 208Pb(16O, X), E(cm) ≈ 35-72 MeV; 208Pb(32S, X), E(cm) ≈ 120-140 MeV; analyzed large-angle quasielastic σ(θ); deduced diffuseness parameters, target deformation dependence.

doi: 10.1103/PhysRevC.73.034607
Citations: PlumX Metrics


2005HI15      Phys.Lett. B 622, 23 (2005)

D.J.Hinde, M.Dasgupta

A new framework to investigate the systematics of fusion probabilities in heavy element formation: Application to Th isotopes

NUCLEAR REACTIONS 204,208Pb(16O, xn), 182W(32S, xn), 176,178,180Hf(40Ar, xn), 172,174,176Yb(48Ca, xn), 154Sm(60Ni, xn), (64Ni, xn), 134,138Ba(82Se, xn), 124Sn(90Zr, xn), (92Zr, xn), (94Zr, xn), (96Zr, xn), 110Pd(104Ru, xn), E not given; analyzed evaporation residue σ.

doi: 10.1016/j.physletb.2005.07.001
Citations: PlumX Metrics


2004DA11      Nucl.Phys. A734, 148 (2004)

M.Dasgupta, D.J.Hinde

Importance of entrance channel dynamics on heavy element formation

NUCLEAR REACTIONS 208Pb(16O, X), (32S, X), E(cm) ≈ 70-160 MeV; calculated fusion σ. 204Pb(12C, xn), (16O, xn), 180Hf(40Ar, xn), 197Au(19F, xn), 186W(30Si, xn), 172Yb(48Ca, xn), 138Ba(82Se, xn), 96Zr(124Sn, xn), E* ≈ 10-90 MeV; calculated evaporation residue σ, entrance channel effects. Comparisons with data.

doi: 10.1016/j.nuclphysa.2004.01.023
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2004DA22      Prog.Theor.Phys.(Kyoto), Suppl. 154, 209 (2004)

M.Dasgupta, D.J.Hinde, J.O.Newton, K.Hagino

The Nuclear Potential in Heavy-Ion Fusion

NUCLEAR REACTIONS 208Pb(19F, X), E(cm)=70-160 MeV; analyzed fusion σ; deduced potential features, dynamical effects.


2004DA23      Phys.Rev. C 70, 024606 (2004)

M.Dasgupta, P.R.S.Gomes, D.J.Hinde, S.B.Moraes, R.M.Anjos, A.C.Berriman, R.D.Butt, N.Carlin, J.Lubian, C.R.Morton, J.O.Newton, A.Szanto de Toledo

Effect of breakup on the fusion of 6Li, 7Li, and 9Be with heavy nuclei

NUCLEAR REACTIONS 209Bi(6Li, X)213Rn/212Rn/211Rn/210Rn/213At/212At/211At/212Po/211Po/210Po, E=26-48 MeV; 209Bi(7Li, X)214Rn/213Rn/212Rn/211Rn/213At/212At/211At/212Po/211Po/210Po/211Bi, E=26-52 MeV; 208Pb(9Be, X)215Rn/214Rn/213Rn/212Rn/212Po/211Po/210Po, E=36-51 MeV; measured fission, complete and incomplete fusion σ; deduced barrier distributions, breakup effects, other reaction mechanism features.

doi: 10.1103/PhysRevC.70.024606
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetA0719.


2004GO04      Phys.Rev. C 69, 024610 (2004)

I.I.Gontchar, D.J.Hinde, M.Dasgupta, J.O.Newton

Double folding nucleus-nucleus potential applied to heavy-ion fusion reactions

NUCLEAR REACTIONS 208Pb(16O, X), E=70-90 MeV; calculated fusion σ. 208Pb(9Be, X), 92Zr, 204Pb(12C, X), 92Zr, 144,148Sm, 208Pb(16O, X), 144Sm(17O, X), 197Au, 208Pb(19F, X), 92Zr, 144Sm, 208Pb(28Si, X), 89Y(34S, X), (32S, X), 90,96Zr(36S, X), 92Zr(35Cl, X), 90,96Zr, 124Sn(40Ca, X), E not given; calculated fusion barrier energies, related features. Double-folding potential.

doi: 10.1103/PhysRevC.69.024610
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2004HA40      Nucl.Phys. A738, 475 (2004)

K.Hagino, M.Dasgupta, D.J.Hinde

Fusion and breakup in the reactions of 6, 7Li and 9Be

NUCLEAR REACTIONS 209Bi(6Li, X), E(cm)=25-50 MeV; calculated fusion σ; deduced breakup contribution. Three-body classical trajectory Monte Carlo method.

doi: 10.1016/j.nuclphysa.2004.04.090
Citations: PlumX Metrics


2004HI18      Prog.Theor.Phys.(Kyoto), Suppl. 154, 1 (2004)

D.J.Hinde, M.Dasgupta

Three Steps to Fusion: What Are the Questions, Where Are the Answers?

doi: 10.1143/PTPS.154.1
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2004NA32      Phys.Rev. C 70, 044601 (2004)

A.Navin, V.Tripathi, Y.Blumenfeld, V.Nanal, C.Simenel, J.M.Casandjian, G.de France, R.Raabe, D.Bazin, A.Chatterjee, M.Dasgupta, S.Kailas, R.C.Lemmon, K.Mahata, R.G.Pillay, E.C.Pollacco, K.Ramachandran, M.Rejmund, A.Shrivastava, J.L.Sida, E.Tryggestad

Direct and compound reactions induced by unstable helium beams near the Coulomb barrier

NUCLEAR REACTIONS 63,65Cu, 188,190,192Os(α, X), E=16-34 MeV; 63Cu(6He, X), E=30 MeV; 65Cu(6He, X), E=19.5, 30 MeV; 63Cu(8He, X), E=27 MeV; 188,190,192Os(6He, X), E=30 MeV; measured Eγ, Iγ, particle spectra, fusion, transfer, and evaporation residue σ, σ(θ).

doi: 10.1103/PhysRevC.70.044601
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD6021.


2004NE02      Phys.Lett. B 586, 219 (2004)

J.O.Newton, R.D.Butt, M.Dasgupta, D.J.Hinde, I.I.Gontchar, C.R.Morton, K.Hagino

Systematics of precise nuclear fusion cross sections: the need for a new dynamical treatment of fusion?

NUCLEAR REACTIONS 208Pb(16O, X), E(cm)=80-105 MeV; 208Pb(9Be, X), 92Zr, 204Pb(12C, X), 58,62Ni, 92Zr, 112,116Sn, 144,148,154Sm, 182,186W, 194,198Pt, 238U(16O, X), 144Sm(17O, X), 197Au, 208Pb, 232Th(19F, X), 92Zr, 144Sm, 178Hf, 208Pb(28Si, X), 178Hf(29Si, X), 186W(30Si, X), 175Lu(31P, X), 89Y, 208Pb, 232Th(32S, X), 89Y, 168Er(34S, X), 92Zr(35Cl, X), 48Ca, 46,48,50Ti, 90,96Zr, 124Sn, 192Os, 194Pt(40Ca, X), 60Ni(58Ni, X), E not given; analyzed fusion excitation functions; deduced diffuseness parameter, possible dynamical effects.

doi: 10.1016/j.physletb.2004.02.052
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2004NE10      Phys.Rev. C 70, 024605 (2004)

J.O.Newton, R.D.Butt, M.Dasgupta, D.J.Hinde, I.I.Gontchar, C.R.Morton, K.Hagino

Systematic failure of the Woods-Saxon nuclear potential to describe both fusion and elastic scattering: Possible need for a new dynamical approach to fusion

NUCLEAR REACTIONS 208Pb(9Be, X), 92Zr, 204Pb(12C, X), 58,62Ni, 92Zr, 112,116Sn, 144,148,154Sm, 182,186W, 194Pt, 208Pb, 238U(16O, X), 144Sm(17O, X), 194Pt(18O, X), 197Au, 208Pb, 232Th(19F, X), 92Zr, 144Sm, 178Hf, 208Pb(28Si, X), 178Hf(29Si, X), 186W(30Si, X), 92Zr(35Cl, X), 175Lu(31P, X), 89Y, 208Pb, 232Th(32S, X), 89Y, 168Er(34S, X), 90,96Zr(36S, X), 48Ca, 46,48,50Ti, 90,96Zr, 124Sn, 192Os, 194Pt(40Ca, X), 48Ca(48Ca, X), 60Ni(58Ni, X), E > barrier; analyzed fusion excitation functions; deduced diffuseness parameters and radii, possible resonance effects, dynamical features.

doi: 10.1103/PhysRevC.70.024605
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2004WO04      Phys.Rev. C 69, 044612 (2004)

R.J.Woolliscroft, B.R.Fulton, R.L.Cowin, M.Dasgupta, D.J.Hinde, C.R.Morton, A.C.Berriman

Elastic scattering and fusion of 9Be+208Pb: Density function dependence of the double folding renormalization

NUCLEAR REACTIONS 208Pb(9Be, 9Be), E=38-75 MeV; measured σ(θ); deduced optical model parameters, dependence on density functions. 208Pb(9Be, X), E(cm) ≈ 35-70 MeV; calculated fusion σ.

doi: 10.1103/PhysRevC.69.044612
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetA0712.


2003DA31      Nucl.Phys. A722, 196c (2003)

M.Dasgupta, D.J.Hinde, K.Hagino

Insights into the influence of breakup on fusion through reactions with weakly bound stable nuclei

NUCLEAR REACTIONS 209Bi(6Li, X), (7Li, X), E(cm) ≈ 20-50 MeV; 208Pb(9Be, X), E(cm) ≈ 30-50 MeV; analyzed fusion σ, barrier distributions, role of projectile breakup.

doi: 10.1016/S0375-9474(03)01358-7
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2003GO30      Nucl.Phys. A722, 479c (2003)

I.I.Gontchar, D.J.Hinde, M.Dasgupta, J.O.Newton

Surface diffuseness of nuclear potential from heavy-ion fusion reactions

NUCLEAR REACTIONS 208Pb(16O, X), (28Si, X), E ≈ threshold; calculated fusion σ, role of surface diffuseness. Semi-microscopic double folding model, comparison with data.

doi: 10.1016/S0375-9474(03)01412-X
Citations: PlumX Metrics


2003HA13      Phys.Rev. C 67, 054603 (2003)

K.Hagino, N.Rowley, M.Dasgupta

Fusion cross sections at deep sub-barrier energies

NUCLEAR REACTIONS 58Ni(58Ni, X), E(cm)=90-110 MeV; calculated fusion σ, dependence on potential shape and surface diffuseness.

doi: 10.1103/PhysRevC.67.054603
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2003HI15      Phys.Rev. C 68, 044606 (2003)

D.J.Hinde, N.Rowley, M.Dasgupta, R.D.Butt, C.R.Morton, A.Mukherjee

Exploratory studies towards fusion with the 16+ isomer of 178Hf

NUCLEAR REACTIONS 178Hf(16O, X), E=68-90 MeV; measured evaporation residue σ, σ(θ). Feasibility of experiment with isomeric target discussed.

doi: 10.1103/PhysRevC.68.044606
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetA0656.


2003WO04      Phys.Rev. C 68, 014611 (2003)

R.J.Woolliscroft, N.M.Clarke, B.R.Fulton, R.L.Cowin, M.Dasgupta, D.J.Hinde, C.R.Morton, A.C.Berriman

Breakup and transfer processes in the 9Be+208Pb reaction

NUCLEAR REACTIONS 208Pb(9Be, αX), E(cm) ≈ 30-60 MeV; measured Eα, αα-coin; deduced breakup and neutron transfer σ.

doi: 10.1103/PhysRevC.68.014611
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetA0713.


2002BU08      Phys.Rev. C65, 044606 (2002); Erratum Phys.Rev. C65, 069904 (2002)

R.D.Butt, M.Dasgupta, I.Gontchar, D.J.Hinde, A.Mukherjee, A.C.Berriman, C.R.Morton, J.O.Newton, A.E.Stuchbery, J.P.Lestone

Effects on Finite Ground-State Spin on Fission Fragment Angular Distributions following Collisions with Spherical or Deformed Nuclei

NUCLEAR REACTIONS 209Bi(16O, F), E(cm) ≈ 76 MeV; 232Th(10B, F), E(cm) ≈ 46 MeV; 176Lu(31P, F), E(cm) ≈ 122 MeV; 178,178mHf(28Si, X), E ≈ 116 MeV; calculated fission fragments angular distributions, dependence on target spin.

doi: 10.1103/PhysRevC.65.044606
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2002BU27      Phys.Rev. C66, 044601 (2002)

R.D.Butt, D.J.Hinde, M.Dasgupta, A.C.Berriman, A.Mukherjee, C.R.Morton, J.O.Newton

Measurement of the effect of large deformation-aligned ground-state spin on fission fragment anisotropies

NUCLEAR REACTIONS 178Hf(28Si, X), (29Si, X), E ≈ 124-161 MeV; 175,176Lu(31P, X), E ≈ 135-165 MeV; measured fission and evaporation residue σ, fission fragment angular distributions, anisotropies; deduced effect of ground-state spin alignment. Comparisons with model predictions.

doi: 10.1103/PhysRevC.66.044601
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD0813.


2002DA19      Eur.Phys.J. C 24, 213 (2002)

M.Dasgupta, G.P.Salam

Resummation of the Jet Broadening in DIS


2002DA23      Phys.Rev. C66, 041602 (2002)

M.Dasgupta, D.J.Hinde, K.Hagino, S.B.Moraes, P.R.S.Gomes, R.M.Anjos, R.D.Butt, A.C.Berriman, N.Carlin, C.R.Morton, J.O.Newton, A.Szanto de Toledo

Fusion and breakup in the reactions of 6Li and 7Li nuclei with 209Bi

NUCLEAR REACTIONS 209Bi(6Li, X), (7Li, X), E(cm)=25-50 MeV; measured fusion, incomplete fusion, and fission excitation functions; deduced reaction mechanism features. Classical trajectory model.

doi: 10.1103/PhysRevC.66.041602
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetA0590.


2002GO05      Phys.Rev. C65, 034610 (2002)

I.I.Gontchar, M.Dasgupta, D.J.Hinde, R.D.Butt, A.Mukherjee

Importance of Geometrical Corrections to Fusion Barrier Calculations for Deformed Nuclei

NUCLEAR REACTIONS 154Sm(16O, X), E=45-70 MeV; calculated fusion barriers, σ; deduced deformation effects.

doi: 10.1103/PhysRevC.65.034610
Citations: PlumX Metrics


2002HI04      Eur.Phys.J. A 13, 149 (2002)

D.J.Hinde, A.C.Berriman, R.D.Butt, M.Dasgupta, C.R.Morton, A.Mukherjee, J.O.Newton

Influence of Entrance Channel Properties on Heavy-Ion Reaction Dynamics

NUCLEAR REACTIONS 208Pb, 232Th(32S, X), 208Pb(19F, X), 168Er(34S, X), E(cm)=80-180 MeV; 209Bi(7Li, X), 208Pb(9Be, X), E(cm)=20-50 MeV; analyzed fusion σ, barrier distributions, entrance channel effects.

doi: 10.1007/s10050-002-8734-0
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2002HI20      Phys.Rev.Lett. 89, 282701 (2002)

D.J.Hinde, M.Dasgupta, A.Mukherjee

Severe Inhibition of Fusion by Quasifission in Reactions Forming 220Th

NUCLEAR REACTIONS 204Pb(16O, X), E=82-102 MeV; measured evaporation residue σ, average neutron yield; deduced fusion inhibition mechanism. 96Zr(124Sn, X), 138Ba(82Se, X), 172Yb(48Ca, X), 180Hf(40Ar, X), E* ≈ 10-70 MeV; analyzed evaporation residue σ, average neutron yield; deduced reaction mechanism mass asymmetry effects.

doi: 10.1103/PhysRevLett.89.282701
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2002HI21      Phys.Rev.Lett. 89, 272701 (2002)

D.J.Hinde, M.Dasgupta, B.R.Fulton, C.R.Morton, R.J.Woolliscroft, A.C.Berriman, K.Hagino

Fusion Suppression and Sub-Barrier Breakup of Weakly Bound Nuclei

NUCLEAR REACTIONS 208Pb(9Be, αX), E=30-40 MeV; measured Eα, αα-coin; deduced prompt breakup σ, fusion suppression mechanism, related features.

doi: 10.1103/PhysRevLett.89.272701
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetA0591.


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