NSR Query Results
Output year order : Descending NSR database version of April 27, 2024. Search: Author = K.Fossez Found 12 matches. 2024CA05 Phys.Rev.Lett. 132, 152501 (2024) S.E.Campbell, G.Bollen, B.A.Brown, A.Dockery, C.M.Ireland, K.Minamisono, D.Puentes, B.J.Rickey, R.Ringle, I.T.Yandow, K.Fossez, A.Ortiz-Cortes, S.Schwarz, C.S.Sumithrarachchi, A.C.C.Villari Precision Mass Measurement of the Proton Dripline Halo Candidate 22Al ATOMIC MASSES 22Al; measured frequencies; deduced mass excess value, proton separation energy. Comparison with predictions from sd-shell USD Hamiltonians. Penning trap mass spectrometry, the low energy beam ion trap (LEBIT) facility.
doi: 10.1103/PhysRevLett.132.152501
2023YA18 Phys.Rev. C 107, 064316 (2023) Eigenvector continuation for emulating and extrapolating two-body resonances
doi: 10.1103/PhysRevC.107.064316
2022FO03 Phys.Rev. C 106, 034312 (2022) Density matrix renormalization group description of the island of inversion isotopes 28-33F NUCLEAR STRUCTURE 25O, 25,26,27,28,31F; analyzed experimental level energies, J, π with reference to ground-state and width of 24O. 25,26,27,28,29,30,31,32,33F; calculated energies of the ground states with reference to 24O core, occupation numbers of the neutron and proton partial waves for the ground states, experimental and predicted energy differences between the lowest 5/2+ and 1/2+ states in odd-A fluorine nuclei. 26,27,28,29,30,31,32,33F; calculated levels, J, π with 4p-4h truncation; discussed halo structure in the ground state of 29F, and island of inversion (IOI). Large-scale shell model calculations using density matrix renormalization group (DMRG) method, and an effective two-body interaction with adjustable parameters in the central and tensor channels. Comparison with available experimental data.
doi: 10.1103/PhysRevC.106.034312
2021LU09 Phys.Rev. C 104, 014307 (2021) Y.-X.Luo, K.Fossez, Q.Liu, J.-Y.Guo Role of quadrupole deformation and continuum effects in the "island of inversion" nuclei 28, 29, 31F NUCLEAR STRUCTURE 28,29,31F; calculated neutron Nilsson single-particle levels, single-particle energies and widths as a function of quadrupole deformation parameter β2, radial density distributions for the single-particle states using the relativistic mean-field approach in the complex-momentum representation (CMR) with the Green's function (GF) method. Discussed halo structures in 29,31F.
doi: 10.1103/PhysRevC.104.014307
2018FO23 Phys.Rev. C 98, 061302 (2018) K.Fossez, J.Rotureau, W.Nazarewicz Energy spectrum of neutron-rich helium isotopes: Complex made simple NUCLEAR STRUCTURE 5,6,7,8,9,10He; calculated levels, J, π, decay widths using Gamow-density-matrix renormalization-group (G-DMRG); predicted parity inversion of narrow resonances in 9He, and s-wave-dominated configuration of the ground state of 10He that could decay by two-neutron emission. Comparison with experimental values.
doi: 10.1103/PhysRevC.98.061302
2017DO02 J.Phys.(London) G44, 045201 (2017) G.X.Dong, N.Michel, K.Fossez, M.Ploszajczak, Y.Jaganathen, R.M.Id Betan Gamow shell model description of radiative capture reactions 6Li(p, γ)7Be and 6Li(n, γ)7Li NUCLEAR REACTIONS 6Li(p, γ), (n, γ), E(cm)<2 MeV; calculated σ, S-factors, energy levels, J, π. Comparison with available data.
doi: 10.1088/1361-6471/aa5f24
2017FO13 Phys.Rev.Lett. 119, 032501 (2017) K.Fossez, J.Rotureau, N.Michel, M.Ploszajczak Can Tetraneutron be a Narrow Resonance? NUCLEAR STRUCTURE 4NN; analyzed available data; calculated evolution of the energy and width of the four-neutron system with the scaling of the N3LO interaction; deduced the energy of the four-neutron system compatible with the experimental value, its width must be larger than the reported upper limit, supporting the interpretation of the experimental observation as a reaction process too short to form a nucleus. Quasistationary formalism using ab initio techniques with various two-body chiral interactions.
doi: 10.1103/PhysRevLett.119.032501
2017FO17 Phys.Rev. C 96, 024308 (2017) K.Fossez, J.Rotureau, N.Michel, W.Nazarewicz Continuum effects in neutron-drip-line oxygen isotopes NUCLEAR STRUCTURE 23,24,25,26,27,28O; calculated binding energies, resonances and widths using complex-energy Gamow shell model and density matrix renormalization group method with a finite-range two-body interaction (GSM+DMRG). Comparison with experimental data.
doi: 10.1103/PhysRevC.96.024308
2017JO12 Phys.Rev. C 96, 054322 (2017) M.D.Jones, K.Fossez, T.Baumann, P.A.DeYoung, J.E.Finck, N.Frank, A.N.Kuchera, N.Michel, W.Nazarewicz, J.Rotureau, J.K.Smith, S.L.Stephenson, K.Stiefel, M.Thoennessen, R.G.T.Zegers Search for excited states in 25O NUCLEAR REACTIONS 2H(24O, 25O), E=83.4 MeV/nucleon, [secondary 24O beam from 9Be(48Ca, X) primary reaction using A1900 fragment separator at NSCL-MSU facility]; measured 24O particles by a position and energy sensitive charged particle detector and separated based on energy loss and time-of-flight, and neutrons from 25O decay by the MoNA-LISA detector array. 25O; deduced two-body (24O+n) decay energy spectrum by invariant-mass spectroscopy technique, neutron-unbound ground state, L-transfer, asymptotic normalization coefficients, cross section and width of a possible 1/2+ resonance above the ground state. Comparisons with previous experimental results, and with theoretical calculations using complex-energy Gamow Shell Model (GSM) and Density Matrix Renormalization Group (DMRG) method with a finite-range two-body interaction. NUCLEAR STRUCTURE 23,24,25,26,27,28O; calculated levels, J, π using complex-energy Gamow Shell Model (GSM) and Density Matrix Renormalization Group (DMRG) method with a finite-range two-body interaction. Comparison with experimental data.
doi: 10.1103/PhysRevC.96.054322
2016FO01 Phys.Rev. C 93, 011305 (2016) K.Fossez, W.Nazarewicz, Y.Jaganathen, N.Michel, M.Ploszajczak Nuclear rotation in the continuum NUCLEAR STRUCTURE 11Be; calculated levels, J, π, yrast band, collective rotational properties in one-halo 11Be nucleus. Nonadiabatic coupled-channel formalism and the Berggren single-particle ensemble containing bound states, narrow resonances, and the scattering continuum; deduced stabilization of collective rotation and long-lived collective states in weakly bound neutron drip-line nuclei.
doi: 10.1103/PhysRevC.93.011305
2016FO22 Phys.Rev. C 94, 054302 (2016) K.Fossez, J.Rotureau, N.Michel, Q.Liu, W.Nazarewicz Single-particle and collective motion in unbound deformed 39Mg NUCLEAR STRUCTURE 39Mg; calculated levels, J, π, resonances, half-lives and widths, configurations, one-body radial density of the valence neutron, single-particle neutron Nilsson diagram. Conventional shell model (SM), Gamow shell model (GSM), resonating group method (RGM), density matrix renormalization group (DMRG) method, and the nonadiabatic particle-plus-rotor model (PRM) formulated in the Berggren basis, with the interactions optimized to the energies of neutron-rich Mg isotopes and 2+ excitations of 34,36,38Mg.
doi: 10.1103/PhysRevC.94.054302
2015FO05 Phys.Rev. C 91, 034609 (2015) K.Fossez, N.Michel, M.Ploszajczak, Y.Jaganathen, R.M.Id Betan Description of the proton and neutron radiative capture reactions in the Gamow shell model NUCLEAR REACTIONS 7Be(p, γ)8B, E(cm)<3 MeV; 7Li(n, γ)8Li, E(cm)<1.2 MeV; calculated E1, M1 and E2 astrophysical S factors, total astrophysical S factor. Gamow shell model (GSM) in coupled-channel (CC) representation. Comparison with experimental data.
doi: 10.1103/PhysRevC.91.034609
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