NSR Query Results
Output year order : Descending NSR database version of April 11, 2024. Search: Author = J.Walshe Found 15 matches. 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
2023LO09 Phys.Lett. B 845, 138149 (2023) J.Lois-Fuentes, B.Fernandez-Dominguez, X.Pereira-Lopez, F.Delaunay, W.N.Catford, A.Matta, N.A.Orr, T.Duguet, T.Otsuka, V.Soma, O.Sorlin, T.Suzuki, N.L.Achouri, M.Assie, S.Bailey, B.Bastin, Y.Blumenfeld, R.Borcea, M.Caamano, L.Caceres, E.Clement, A.Corsi, N.Curtis, Q.Deshayes, F.Farget, M.Fisichella, G.de France, S.Franchoo, M.Freer, J.Gibelin, A.Gillibert, G.F.Grinyer, F.Hammache, O.Kamalou, A.Knapton, Tz.Kokalova, V.Lapoux, B.Le Crom, S.Leblond, F.M.Marques, P.Morfouace, J.Pancin, L.Perrot, J.Piot, E.Pollacco, D.Ramos, D.Regueira-Castro, C.Rodriguez-Tajes, T.Roger, F.Rotaru, M.Senoville, N.de Sereville, R.Smith, M.Stanoiu, I.Stefan, C.Stodel, D.Suzuki, J.C.Thomas, N.Timofeyuk, M.Vandebrouck, J.Walshe, C.Wheldon Cross-shell states in 15C: A test for p-sd interactions NUCLEAR REACTIONS 2H(16C, t), E=17.2 MeV/nucleon; measured reaction products, Eγ, Iγ; deduced σ(θ), level energies, J, π, experimental level scheme, single-particle strength, normalised spectroscopic factors. Comparison with the ab initio self-consistent Green's function method employing the NNLOsat interaction. TIARA Silicon array, three MUST2 telescopes, GANIL.
doi: 10.1016/j.physletb.2023.138149
2021BA19 Eur.Phys.J. A 57, 108 (2021) S.Bailey, T.Kokalova, M.Freer, C.Wheldon, R.Smith, J.Walshe, N.Soic, L.Prepolec, V.Tokic, F.M.Marques, L.Achouri, F.Delaunay, M.Parlog, Q.Deshayes, B.Fernandez-Dominguez, B.Jacquot The identification of α-clustered doorway states in 44, 48, 52Ti using machine learning NUCLEAR REACTIONS 4He(40Ca, α), (44Ca, α), (48Ca, α), E not given; analyzed available σ(θ) data; deduced Random Forest Classifier (RFC) toclassify spectra as either clustered or not clustered.
doi: 10.1140/epja/s10050-021-00357-3
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
2020PE15 Phys.Lett. B 811, 135939 (2020) X.Pereira-Lopez, B.Fernandez-Dominguez, F.Delaunay, N.L.Achouri, N.A.Orr, W.N.Catford, M.Assie, S.Bailey, B.Bastin, Y.Blumenfeld, R.Borcea, M.Caamano, L.Caceres, E.Clement, A.Corsi, N.Curtis, Q.Deshayes, F.Farget, M.Fisichella, G.de France, S.Franchoo, M.Freer, J.Gibelin, A.Gillibert, G.F.Grinyer, F.Hammache, O.Kamalou, A.Knapton, T.Kokalova, V.Lapoux, J.A.Lay, B.Le Crom, S.Leblond, J.Lois-Fuentes, F.M.Marques, A.Matta, P.Morfouace, A.M.Moro, T.Otsuka, J.Pancin, L.Perrot, J.Piot, E.Pollacco, D.Ramos, C.Rodriguez-Tajes, T.Roger, F.Rotaru, M.Senoville, N.de Sereville, R.Smith, O.Sorlin, M.Stanoiu, I.Stefan, C.Stodel, D.Suzuki, T.Suzuki, J.C.Thomas, N.Timofeyuk, M.Vandebrouck, J.Walshe, C.Wheldon Low-lying single-particle structure of 17C and the N=14 sub-shell closure NUCLEAR REACTIONS 2H(16C, p)17C, E=17.2 MeV/nucleon; measured reaction products, Eγ, Iγ; deduced σ(θ), γ-ray energies, J, π, level scheme, spectroscopic factors. Comparison with shell model and particle-core model calculations.
doi: 10.1016/j.physletb.2020.135939
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
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
2019BA45 Phys.Rev. C 100, 051302 (2019) S.Bailey, T.Kokalova, M.Freer, C.Wheldon, R.Smith, J.Walshe, N.Curtis, N.Soic, L.Prepolec, V.Tokic, F.M.Marques, L.Achouri, F.Delaunay, Q.Deshayes, M.Parlog, B.Fernandez-Dominguez, B.Jacquot, A.Soylu Extracting the spectral signature of α clustering in 44, 48, 52Ti using a continuous wavelet transform NUCLEAR REACTIONS 4He(40Ca, α)44Ti*, E=180 MeV; 4He(44Ca, α)48Ti*, E=207 MeV; 4He(48Ca, α)52Ti*, E=234 MeV; measured scattered α particles, Eα, Iα, differential σ using double-sided silicon strip detectors at the GANIL radioactive beam facility; deduced continuous wavelet transform (CWT) of the measured spectra, and compared with simulated spectra using the simplified R matrix for spinless particles. 44Ti; deduced high-lying α-clustered levels J, π and compared with previous measurements. Present technique combined thick target inverse kinematics (TTIK) approach and the resonant scattering measurements with the continuous wavelet transform (CWT).
doi: 10.1103/PhysRevC.100.051302
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
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
2017JO07 Phys.Rev. C 95, 064321 (2017) P.R.John, J.J.Valiente-Dobon, D.Mengoni, V.Modamio, S.Lunardi, D.Bazzacco, A.Gadea, C.Wheldon, T.R.Rodriguez, T.Alexander, G.de Angelis, N.Ashwood, M.Barr, G.Benzoni, B.Birkenbach, P.G.Bizzeti, A.M.Bizzeti-Sona, S.Bottoni, M.Bowry, A.Bracco, F.Browne, M.Bunce, F.Camera, L.Corradi, F.C.L.Crespi, B.Melon, E.Farnea, E.Fioretto, A.Gottardo, L.Grente, H.Hess, Tz.Kokalova, W.Korten, A.Kusoglu, S.Lenzi, S.Leoni, J.Ljungvall, R.Menegazzo, C.Michelagnoli, T.Mijatovic, G.Montagnoli, D.Montanari, D.R.Napoli, Zs.Podolyak, G.Pollarolo, F.Recchia, P.Reiter, O.J.Roberts, E.Sahin, M.-D.Salsac, F.Scarlassara, M.Sferrazza, P.-A.Soderstrom, A.M.Stefanini, S.Szilner, C.A.Ur, A.Vogt, J.Walshe In-beam γ-ray spectroscopy of the neutron-rich platinum isotope 200Pt toward the N=126 shell gap NUCLEAR REACTIONS 198Pt(82Se, 80Se)200Pt, E=426 MeV; measured Eγ, Iγ, (80Se recoils)γγ-coin using PRISMA spectrometer for 80Se recoils and AGATA array for Doppler-corrected γ rays at XTU Tandem-ALPI accelerator of LNL-Legnaro facility. 200Pt; deduced levels, J, π, ground-state band, structure above the 17-ns, 7- isomer. Comparison with theoretical model calculations. NUCLEAR STRUCTURE 190,192,194,196,198,200,202,204Pt; calculated particle-number-projected potential energy surfaces in (β2, γ) plane, yrast band excitation energies. Beyond mean-field, symmetry-conserving configuration-mixing (SCCM) calculations based on Gogny D1S energy density functionals. Comparison with experimental data.
doi: 10.1103/PhysRevC.95.064321
2017TO06 Acta Phys.Pol. B48, 319 (2017) V.Tokic, N.Soic, S.Blagus, S.Fazinic, D.Jelavic-Malenica, T.Mijatovic, D.Miljanic, L.Prepolec, N.Skukan, S.Szilner, M.Uroic, M.Milin, A.Di Pietro, P.Figuera, J.P.Fernandez-Garcia, M.Fisichella, M.Lattuada, V.Scuderi, E.Strano, D.Torresi, S.Bailey, N.Curtis, M.Freer, R.Smith, J.Walshe, V.Ziman, L.Acosta, I.Martel, G.Marquinez-Duran, A.M.Sanchez-Benitez, E.Fioretto Structure of 24Mg Excited States and Their Influence on Nucleosynthesis NUCLEAR REACTIONS 12C(16O, α)24Mg, E=94 MeV; measured decay channels of 24Mg (emission of α, proton, breakup to 12C+12C and to 8Be+16O). 24Mg; deduced excitation energies of resonances. 4He(20Ne, α)20Ne, E=44, 52, 60 MeV; measured reaction products. 24Mg; deduced σ(θ), resonances; calculated σ(θ) using R-matrix fit to the data at 44 MeV. Further R-matrix calculations in progress.
doi: 10.5506/APhysPolB.48.319
2016WA29 Phys.Rev. C 94, 054304 (2016) J.Walshe, M.Freer, C.Wheldon, A.Soylu, N.L.Achouri, N.I.Ashwood, W.N.Catford, I.C.Celik, N.Curtis, F.Delaunay, B.Fernandez-Dominguez, L.Grassi, Tz.Kokalova, F.M.Marques, N.A.Orr, L.Prepolec, V.Scuderi, N.Soic, V.Tokic Experimental study of high-lying states in 28Mg using the resonant elastic scattering of α particles NUCLEAR REACTIONS 4He(24Ne, α), E=3.8 MeV/nucleon, [24Ne secondary beam from C(26Mg, X), E=E=82 MeV/nucleon at GANIL facility]; measured Eα, Iα, σ(Eα, θ) using thick target in inverse kinematics (TTIK) technique. 28Mg; deduced levels, resonances, J, π, α and total widths, ratio of reduced width to the Wigner limit. R-Matrix analysis using AZURE2 code. Comparisons with theoretical calculations of widths using the code GAMOW.
doi: 10.1103/PhysRevC.94.054304
2015WH01 Phys.Rev. C 91, 024308 (2015) C.Wheldon, Tz.Kokalova, M.Freer, J.Walshe, R.Hertenberger, H.-F.Wirth, N.I.Ashwood, M.Barr, N.Curtis, Th.Faestermann, R.Lutter, J.D.Malcolm, D.J.Marin-Lambarri Spectroscopy of 9B via high-resolution ejectile-tagged recoil break-up NUCLEAR REACTIONS 9Be(3He, t)9B*, E=33 MeV; measured particle spectra, (9B breakup products)(triton)-coin using Munich-Q3D spectrograph at the MLL tandem Van de Graaff accelerator facility. 9B; deduced levels, J, π, total and partial widths for 8Be+p and 5Li+α channels. Comparison with earlier experimental results.
doi: 10.1103/PhysRevC.91.024308
2014JO05 Phys.Rev. C 90, 021301 (2014) P.R.John, V.Modamio, J.J.Valiente-Dobon, D.Mengoni, S.Lunardi, T.R.Rodriguez, D.Bazzacco, A.Gadea, C.Wheldon, T.Alexander, G.de Angelis, N.Ashwood, M.Barr, G.Benzoni, B.Birkenbach, P.G.Bizzeti, A.M.Bizzeti-Sona, S.Bottoni, M.Bowry, A.Bracco, F.Browne, M.Bunce, F.Camera, B.Cederwall, L.Corradi, F.C.L.Crespi, P.Desesquelles, J.Eberth, E.Farnea, E.Fioretto, A.Gorgen, A.Gottardo, J.Grebosz, L.Grente, H.Hess, A.Jungclaus, Tz.Kokalova, A.Korichi, W.Korten, A.Kusoglu, S.Lenzi, S.Leoni, J.Ljungvall, G.Maron, W.Meczynski, B.Melon, R.Menegazzo, C.Michelagnoli, T.Mijatovic, B.Million, P.Molini, G.Montagnoli, D.Montanari, D.R.Napoli, P.Nolan, C.Oziol, Zs.Podolyak, G.Pollarolo, A.Pullia, B.Quintana, F.Recchia, P.Reiter, O.J.Roberts, D.Rosso, E.Sahin, M.-D.Salsac, F.Scarlassara, M.Sferrazza, J.Simpson, P.-A.Soderstrom, A.M.Stefanini, O.Stezowski, S.Szilner, Ch.Theisen, C.A.Ur, J.Walshe Shape evolution in the neutron-rich osmium isotopes: Prompt γ-ray spectroscopy of 196Os NUCLEAR REACTIONS 198Pt(82Se, X), E=426 MeV; measured Eγ, Iγ, γγ-, (84Kr)γ-coin using PRISMA spectrometer for fragments and AGATA array for γ rays at Tandem-ALPI-LNL accelerator facility. 196Os; deduced levels, J, π, γ-unstable/triaxial rotor yrast band. Comparison with state-of-the-art beyond-mean-field calculations. NUCLEAR STRUCTURE 188,190,192,194,196,198Os; calculated particle number projected potential energy surfaces in (β2, γ) plane, level energies in the yrast bands using Gogny D1S interaction. State-of-the-art beyond-meanfield calculations. Comparison with experimental data.
doi: 10.1103/PhysRevC.90.021301
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