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NSR database version of April 11, 2024.

Search: Author = E.Khan

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2023GU18      Phys.Rev. C 108, 035810 (2023)

H.Guven, J.Margueron, K.Bozkurt, E.Khan

Characteristics of compact stars determined by gravitational waves, radio-astronomy, x-ray emission, and nuclear physics

doi: 10.1103/PhysRevC.108.035810
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2023ME04      Phys.Rev. C 107, 034309 (2023)

F.Mercier, J.-P.Ebran, E.Khan

Covariant energy density functionals with and without tensor couplings at the Hartree-Bogoliubov level

NUCLEAR STRUCTURE Z=4-98, N=4-150; calculated binding energy, rms radii, spin-orbit splitting, tensor energy per nucleon. 20Ne, 120Sn, 238U; calculated one-dimensional potential energy surface. 34Si, 20Ne; calculated total density, proton and neutron densities. Relativistic Hartree-Bogoliubov (RHB) approach with tensor terms in the vector-isoscalar channel. Free parameters of covariant functionals optimized by combining Markov-chain Monte Carlo and simplex algorithms. Comparison with experimental values.

doi: 10.1103/PhysRevC.107.034309
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2023ZH13      Phys.Rev. C 107, 034311 (2023)

J.Zhao, J.-P.Ebran, L.Heitz, E.Khan, F.Mercier, T.Niksic, D.Vretenar

Microscopic description of α, 2α, and cluster decays of 216-220Rn and 220-224Ra

RADIOACTIVITY 212Po, 216,218,220Rn, 220,222,224Ra(α), (2α); 222,224Ra(12C); calculated T1/2, branching ratios. Relativistic Hartree-Bogoliubov model with the DD-PC1 functional and a separable pairing force. Comparison to experimental data.

NUCLEAR STRUCTURE 212Po, 216,218,220Rn, 220,222,224Ra; calculated deformation-energy surfaces (quadrupole, octupole and hexadecupole).

doi: 10.1103/PhysRevC.107.034311
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2022GR10      Phys.Rev. C 106, 044305 (2022)

G.Grams, R.Somasundaram, J.Margueron, E.Khan

Nuclear incompressibility and speed of sound in uniform matter and finite nuclei

NUCLEAR STRUCTURE 98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,159,160,161,162Sn, 174,175,176,177,178,179,180,181,182,183,184,185,186,187,188,189,190,191,192,193,194,195,196,197,198,199,200,201,202,203,204,205,206,207,208,209,210,211,212,213,214,215,216,217,218,219,220,221,222,223,224,225,226,227,228,229,230,231,232,233,234,235,236,237,238,239,240,241,242,243,244,245,246,247,248,249,250,251,252,253,254,255,256,257,258,259,260Pb, 90,92,94Zr; calculated surface tension, incompressibility, contributions from the surface and Coulomb terms to the incompressibility, speed of sound in finite nuclei matter. 100,106,114,120Sn, 180,200,208Pb; binding energies, isoscalar giant monopole resonance energy (ISGMR). Compressible liquid-drop model extended with a density-dependent surface term. Bayesian approach coupled to a Markov-Chain Monte Carlo exploration of the parameter space to confront the model predictions. Comparison to experimental results, EDF calculations and AME2020 data.

doi: 10.1103/PhysRevC.106.044305
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2022KH01      Phys.Rev. C 105, 014306 (2022)

E.Khan

Derivation of the Mn/Mp ratio in exotic nuclei

NUCLEAR STRUCTURE 14,16,18,19,21,22,24,26,27,29O, 29,32,35,38,42,45,48,50,54,58S, 32,36,40,42,46,50,54,58,60,62Ar; calculated (Mn/Mp)/(N/Z) ratios with the parametrizations of radii and diffuseness. and with the original Bernstein formula. 18,20,22O, 30,32,34,36,38,40S, 34,36,40,42,44Ar; calculated (Mn/Mp)/(N/Z) ratios with the original Bernstein formula, the generalized one, and the microscopic analysis. Generalized formula to calculate Mn/Mp ratios of the multipole transition matrix elements, in the framework of phenomenological analysis.

doi: 10.1103/PhysRevC.105.014306
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2022KH10      Phys.Rev. C 106, 064330 (2022)

E.Khan, L.Heitz, F.Mercier, J.-P.Ebran

α-particle formation and clustering in nuclei

NUCLEAR STRUCTURE 4He, 8Be, 16O, 20Ne; calculated microscopic densities, nucleonic localization function. Calculations utilizing calculated with the covariant DD-ME2 and Skyrme energy density functional. Quantified the criteria defining α-cluster in nuclei.

RADIOACTIVITY 212Po(α); calculated density and nucleonic localization function during α-decay.

doi: 10.1103/PhysRevC.106.064330
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2022ME06      Phys.Rev. C 105, 034343 (2022)

F.Mercier, J.-P.Ebran, E.Khan

Low-energy monopole strength in spherical and axially deformed nuclei: Cluster and soft modes

NUCLEAR STRUCTURE 40,42,44,46,48,50,52,54,56,58,60,62Ca, 46,48,50,52,54,56,58,60,62,64,66,68,70,72,74,76,78,80,82,84,86Ni, 24,26,28,30,32,34,36Mg; calculated isoscalar monopole strength distribution, single-particle spectrum, transition densities, soft mode and cluster exciations contribution to the total strength. 20Ne; calculated ground-state density, localization function, transition densities. Studied the evolution of monopole strength with pairing energy, deformation, neutron excess. Covariant QRPA calculations, formulated within the finite amplitude method, on top of constrained relativistic Hartree-Bogoliubov (RHB) reference states.

doi: 10.1103/PhysRevC.105.034343
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2022YU07      Phys.Rev. C 106, 054309 (2022)

E.Yuksel, F.Mercier, J.-P.Ebran, E.Khan

Clustering in nuclei at finite temperature

NUCLEAR STRUCTURE 20,32Ne; calculated deformation parameter, pairing gap, entropy, total intrinsic density and excitation energy as a function of temperature, proton, neutron and α localization densities, proton and nuetron isoscalar and isovector densities. Finite temperature relativistic Hartree-Bogoliubov (FT-RHB) method with the relativistic density-dependent meson-nucleon coupling functional DD-ME2.

doi: 10.1103/PhysRevC.106.054309
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2021EB01      J.Phys.(London) G48, 025106 (2021)

J.-P.Ebran, E.Khan, R.-D.Lasseri

Nucleonic localisation and alpha radioactivity

RADIOACTIVITY 186,188,190,192,194,196,198,200,202,204,206,208,210,212,214,216,218Po, 194,196,198,200,202,204,206,208,210,212,214,216,218,220,222Rn, 202,204,206,208,210,212,214,216,218,220,222,224,226Ra, 104Te(α); calculated T1/2. Comparison with available data.

doi: 10.1088/1361-6471/abcf25
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2021GU29      Phys.Rev. C 104, 064306 (2021)

H.Guven, K.Bozkurt, E.Khan, J.Margueron

Ground state properties of charmed hypernuclei within a mean field approach

NUCLEAR STRUCTURE 5Li, 17F, 41S, 57Cu, 133Sb, 209Bi; calculated binding energy per baryon for hypernuclei with respect to one of the nucleus without the charmed baryon, and separation energies of Λc hyperons, Fermi energies of neutrons and protons for hypernuclei, contributions of the kinetic energies, interaction and the Coulomb potentials on the Λc separation energies, Λc density distributions, Λc (Λ) single particle energy spectra. Hartree-Fock approach by using three different force sets (NSC89, NSC97a, NSC97f) derived from microscopic Brueckner-Hartree-Fock calculations of hypernuclei. Comparison with available experimental data.

doi: 10.1103/PhysRevC.104.064306
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2021ME03      Phys.Rev. C 103, 024303 (2021)

F.Mercier, A.Bjelcic, T.Niksic, J.-P.Ebran, E.Khan, D.Vretenar

Low-energy cluster modes in N=Z nuclei

NUCLEAR STRUCTURE 20Ne; calculated self-consistent equilibrium density contour, monopole strength function, QFAM response to strength functions for the isoscalar monopole (Kπ=0+ and 0-), isoscalar dipole (Kπ=1+ and 1-), isoscalar quadrupole (Kπ=2+ and 2-) and isoscalar octupole (Kπ=3-) operators, centroids of the monopole strength function, density and localization function contours induced by monopole and octupole perturbations, neutron 2-qp contributions to the isoscalar monopole excitation as function of β2. 24Mg, 28Si, 32S; calculated low-energy isoscalar monopole strength distributions, QFAM response, neutron 2-qp contributions to the low-energy monopole modes. Finite amplitude method (FAM) based on the microscopic framework of relativistic nuclear energy density functionals with DD-PC1 parametrization for α-conjugate or α-cluster nuclei.

doi: 10.1103/PhysRevC.103.024303
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2021ME16      Phys.Rev.Lett. 127, 012501 (2021)

F.Mercier, J.Zhao, J.-P.Ebran, E.Khan, T.Niksic, D.Vretenar

Microscopic Description of 2α Decay in 212Po and 224Ra Isotopes

RADIOACTIVITY 212Po, 224Ra(2α), (α); calculated axially symmetric deformation energy surfaces as functions of quadrupole, octupole, and hexadecapole collective coordinates. Self-consistent framework based on energy density functionals.

doi: 10.1103/PhysRevLett.127.012501
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2021XU04      Phys.Rev. C 104, 044301 (2021)

Y.Xu, S.Goriely, E.Khan

Systematical studies of the E1 photon strength functions combining the Skyrme-Hartree-Fock-Bogoliubov plus quasiparticle random-phase approximation model and experimental giant dipole resonance properties

NUCLEAR STRUCTURE 70,72,74Ge, 80,82Se, 89Y, 90,91,92,94Zr, 93Nb, 96,100Mo, 103Rh, 107Ag, 115In, 119,120,124Sn, 124,126,128Te, 127I, 128,134Xe, 133Ce, 138Ba, 140Ce, 141Pr, 143,145,146Nd, 144,150Sm, 165Ho, 181Ta, 188Os, 197Au, 206,208Pb, 209Bi, 239Pu; calculated E1 photon strength function using BSk27+QRPA, and compared with extracted strength from experimental photoabsorption cross sections. A=70-190; calculated parameters of giant-dipole resonances (GDR) using BSk27+QRPA, and compared with compiled in the RIPL-3 database. A=25-250; calculated E1 strength functions and compared with compiled data in RIPL3 for 60 nuclei from 25Mg to 239U, and comparison between ARC E1 strength function for 25 nuclei from 96Mo to 240Pu. 115,120,125,130,135,140,145,150,155Sn; calculated E1 photon strength functions from empirical Lorentzian model SMLO, D1M+QRPA, BSk7+QRPA, and the present BSk27+QRPA. 115,116,117,118,119,120,121,122,123,124,125,126,127,128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,144,145,146,147,148,149,150,151,152,153,154,155Sn; calculated neutron capture reaction rates at the temperature of T9=1 using present BSk27+QRPA model and compared with those from BSk7+QRPA, D1M+QRPA, SMLO. Z=1-110, N=0-255; calculated neutron capture reaction rates at T9=1 present BSk27+QRPA model and compared with those from previous D1M+QRPA model. 43,44Sc, 44,45Ti; calculated temperature-dependent E1 strength functions using present BSk27+QRPA, and compared with shell-model calculationsSystematic investigation of E1 photon strength functions for about 10, 000 nuclei with Z=8-124 lying between the proton and neutron drip lines by combining simultaneously microscopic Hartree-Fock-Bogoliubov plus quasiparticle random-phase approximation (HFB+QRPA) model and the constraints from available experimental results for photon strength functions from giant dipole resonance (GDR) data, and other types of experiments. Relevance to future measurement of the photonuclear excitation using the Extreme Light Infrastructure (ELI-NP) facilities, and to improve study of r and p nucleosynthesis processes.

doi: 10.1103/PhysRevC.104.044301
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2020BA61      Eur.Phys.J. A 56, 290 (2020)

S.Bagchi, H.Akimune, J.Gibelin, M.N.Harakeh, N.Kalantar-Nayestanaki, N.L.Achouri, B.Bastin, K.Boretzky, H.Bouzomita, M.Caamano, L.Caceres, S.Damoy, F.Delaunay, B.Fernandez-Dominguez, M.Fujiwara, U.Garg, G.F.Grinyer, O.Kamalou, E.Khan, A.Krasznahorkay, G.Lhoutellier, J.F.Libin, S.Lukyanov, K.Mazurek, M.A.Najafi, J.Pancin, Y.Penionzhkevich, L.Perrot, R.Raabe, C.Rigollet, T.Roger, S.Sambi, H.Savajols, M.Senoville, C.Stodel, L.Suen, J.C.Thomas, M.Vandebrouck, J.Van de Walle

Signature of a possible α-cluster state in N = Z doubly-magic 56Ni

NUCLEAR REACTIONS 4He(56Ni, α), E=50 MeV/nucleon; measured reaction products, Eα, Iα. 56Ni; deduced average multiplicities, α-cluster resonance state. Comparison with theoretical calculations. MAYA setup, GANIL.

doi: 10.1140/epja/s10050-020-00294-7
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2020EB01      Phys.Rev. C 102, 014305 (2020)

J.-P.Ebran, M.Girod, E.Khan, R.D.Lasseri, P.Schuck

α-particle condensation: A nuclear quantum phase transition

NUCLEAR STRUCTURE 16O; calculated binding energy as a function of deformation parameters β20, β30, β32, nucleon radial density for rms radii, neutron single particle levels, single-nucleon occupation numbers, Mott-like transition towards α-clusterized states using microscopic energy density functional (EDF) theory with the relativistic and the Gogny approaches. Discussed phase transition in nucleon density from Fermi gas to tetrahedral α-clustered configuration at critical density.

doi: 10.1103/PhysRevC.102.014305
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2020GU14      Phys.Rev. C 102, 015805 (2020)

H.Guven, K.Bozkurt, E.Khan, J.Margueron

Multimessenger and multiphysics Bayesian inference for the GW170817 binary neutron star merger

doi: 10.1103/PhysRevC.102.015805
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2020JO06      Phys.Rev. C 102, 024321 (2020)

S.Jongile, A.Lemasson, O.Sorlin, M.Wiedeking, P.Papka, D.Bazin, C.Borcea, R.Borcea, A.Gade, H.Iwasaki, E.Khan, A.Lepailleur, A.Mutschler, F.Nowacki, F.Recchia, T.Roger, F.Rotaru, M.Stanoiu, S.R.Stroberg, J.A.Tostevin, M.Vandebrouck, D.Weisshaar, K.Wimmer

Structure of 33Si and the magicity of the N=20 gap at Z=14

NUCLEAR REACTIONS 9Be(34Si, 33Si), E=98.5 MeV/nucleon, [34Si secondary beam from 9Be(48Ca, X), E=140 MeV/nucleon primary reaction, followed by separation of fragments using the A1900 fragment separator at the NSCL-MSU facility]; measured reaction residues using the S800 spectrograph, Eγ, Iγ, (33Si)γ-coin using the GRETINA array for γ detection, momentum distributions. 33Si; deduced levels, J, π, L-transfers in one-nucleon knockout reactions, population fractions, partial cross sections of final states, spectroscopic factors. Comparison with shell-model calculations with SDPF-U-MIX interaction, and with previous experimental results.

doi: 10.1103/PhysRevC.102.024321
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2020ME08      Phys.Rev. C 102, 011301 (2020)

F.Mercier, J.Zhao, R.D.Lasseri, J.-P.Ebran, E.Khan, T.Niksic, D.Vretenar

Microscopic description of the self-conjugate 108Xe and 104Te α-decay chain

RADIOACTIVITY 108Xe, 104Te(α); calculated deformation energy surfaces in (β20, β30) and (β20, β40) planes, total nucleon density of the fragments around scission for α emission, T1/2 using self-consistent microscopic energy density functional framework with relativistic density functional DD-PC1 Comparison with experimental half-lives.

doi: 10.1103/PhysRevC.102.011301
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2020RA29      Phys.Rev. C 102, 065804 (2020)

A.Ravlic, E.Yuksel, Y.F.Niu, G.Colo, E.Khan, N.Paar

Stellar electron-capture rates based on finite-temperature relativistic quasiparticle random-phase approximation

NUCLEAR REACTIONS 44Ti, 56Fe(e-, ν), E<30 MeV; calculated electron capture cross sections in stellar environment for the 0+, 0-, 1+, 1-, 2+ and 2- multipoles, B(GT+) transition strength distributions; concluded that for the complete description of electron capture, both pairing and temperature effects must be considered. Nuclear ground-state properties calculated using finite-temperature Hartree BCS theory (FT-HBCS), and nuclear excitations in the charge exchange channel using finite-temperature proton-neutron relativistic QRPA (FT-PNRQRPA), with relativistic energy density functional (DD-ME2) in both cases.

doi: 10.1103/PhysRevC.102.065804
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2020YU03      Phys.Rev. C 101, 044305 (2020)

E.Yuksel, N.Paar, G.Colo, E.Khan, Y.F.Niu

Gamow-Teller excitations at finite temperature: Competition between pairing and temperature effects

NUCLEAR STRUCTURE 42Ca, 46Ti, 118Sn; calculated B(GT-), centroid energies of Gamow-Teller (GT) resonances, summed B(GT-), quasiparticle configuration of low-lying GT- states as function of temperature. Relativistic and nonrelativistic finite temperature proton-neutron quasiparticle RPA (FT-PNQRPA) with Skyrme-type functional SkM*, and meson-exchange interaction DD-ME2. Comparison with experimental data. Relevance to universal modeling of the weak-interaction processes in stellar environments, such as electron capture, β decays, and neutrino-nucleus reactions.

doi: 10.1103/PhysRevC.101.044305
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2019MA23      Phys.Rev. C 99, 034317 (2019)

P.Marevic, J.-P.Ebran, E.Khan, T.Niksic, D.Vretenar

Cluster structures in 12C from global energy density functionals

NUCLEAR STRUCTURE 12C; calculated deformation energy surfaces in (β2, β3) plane, energy curves as functions of the axial quadrupole deformation β2, low-energy levels, J, π, intraband B(E2) values, spectroscopic quadrupole moments, amplitudes of the collective wave functions squared, and characteristic intrinsic nucleon densities of first three 2+ and 0+ states; analyzed low-lying excitation spectrum and cluster structures in 12C using beyond mean-field framework based on global energy density functionals. Comparison with experimental values.

NUCLEAR REACTIONS 12C(e, e), (e, e'), θ2=0-14 fm2; calculated electron scattering form factors using the MR-EDF framework, and compared with experimental data, and with predictions of the AMD and THSR models.

doi: 10.1103/PhysRevC.99.034317
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2019YU06      Eur.Phys.J. A 55, 230 (2019)

E.Yuksel, G.Colo, E.Khan, Y.F.Niu

Nuclear excitations within microscopic EDF approaches: Pairing and temperature effects on the dipole response

doi: 10.1140/epja/i2019-12918-8
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2018EB02      Phys.Rev. C 97, 061301 (2018)

J.-P.Ebran, E.Khan, R.-D.Lasseri, D.Vretenar

Single-particle spatial dispersion and clusters in nuclei

NUCLEAR STRUCTURE 288Cf; calculated radial dispersion of the single-neutron, and harmonic-oscillator wave functions. Z=1-120, N=1-200; calculated radial dispersion of single-particle states of valence nucleons. 20Ne; calculated single-particle neutron levels, dispersion of valence neutron wave function, and partial intrinsic valence neutron densities as a function of axial deformation. Self-consistent relativistic mean-field (RMF) framework based on nuclear energy density functionals, and with the harmonic-oscillator approximation for the nuclear potential.

doi: 10.1103/PhysRevC.97.061301
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2018GU07      Phys.Rev. C 98, 014318 (2018)

H.Guven, K.Bozkurt, E.Khan, J.Margueron

ΛΛ pairing in multistrange hypernuclei

NUCLEAR STRUCTURE 60Ca, 172Sn, 278Pb; calculated Λ single particle spectra with 20 Λ added in 40Ca, 40 Λ added in 132Sn and 70 Λ added in 208Pb. 40Ca, 132Sn, 208Pb; calculated proton, neutron, and Λ Fermi energies as function of strangeness number, ΛΛ pairing, binding energies, density profiles, and Λ pairing densities. 44,48Ca, 244Pb; calculated single particle spectra with four Λ added in 40Ca, eight Λ added in 40Ca, and 36 Λ added in 208Pb; deduced effect of Λ pairing on the ground state properties of hypernuclei. Hartree-Fock-Bogoliubov (HBF) calculations with SLy5 Skyrme functional for the nucleon-nucleon (NN) channel, and Brueckner-Hartree-Fock calculations with the DF-NSC89, DF-NSC97a and DF-NSC97f functionals for the nucleon-hyperon (NΛ) channel.

doi: 10.1103/PhysRevC.98.014318
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2018LA09      Phys.Rev. C 98, 014310 (2018)

R.-D.Lasseri, J.-P.Ebran, E.Khan, N.Sandulescu

Localization of pairing correlations in nuclei within relativistic mean field models

NUCLEAR STRUCTURE 66Ni, 124Sn, 200Pb; calculated ground state energies, rms neutron radii, pairing energies, mean distance between two neutrons, average coherence lengths for pairing tensor and Cooper pair wave function, and two-body correlation functions. 120Sn; calculated coherence length for various intensities of the pairing force, and uivi for single-particle states. Relativistic Hartree-Bogoliubov (RHB) and relativistic mean field (RMF) plus projected BCS (RHB+RMF+PBCS) models.

doi: 10.1103/PhysRevC.98.014310
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2018MA13      Phys.Rev. C 97, 024334 (2018)

P.Marevic, J.-P.Ebran, E.Khan, T.Niksic, D.Vretenar

Quadrupole and octupole collectivity and cluster structures in neon isotopes

NUCLEAR STRUCTURE 20,22,24,26,28,30,32,34Ne; calculated mean-field potential energy surfaces (PES) in (β2, β3) plane, angular momentum- and parity-projected PES in (β2, β3) plane, S(2n), collective wave functions, and average deformation parameters for the ground state, level energies of the first 2+ and 4+ states, B(E2) to the ground state, spectroscopic quadrupole moments. 20,22,24,32,34Ne; calculated levels, J, π, collective spectrum, B(E2), B(E3), collective wave functions of excited states, intrinsic nucleon and valence neutrons densities. Self-consistent relativistic mean-field framework with restoration of symmetries and configuration mixing. Discussed role of valence neutrons in the formation of molecular-type bonds between clusters. Description of cluster structures. Comparison with experimental data.

doi: 10.1103/PhysRevC.97.024334
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2018YU03      Phys.Rev. C 97, 064308 (2018)

E.Yuksel, G.Colo, E.Khan, Y.F.Niu

Low-energy quadrupole states in neutron-rich tin nuclei

NUCLEAR STRUCTURE 116,118,120,122,124,126,128,130,132,134Sn; calculated mean value of the neutron pairing gap of even-A 116Sn to 130Sn isotopes, proton and neutron single-particle energies of even-A 116Sn to 132Sn, quasiparticle energies and occupation probabilities of neutron states around the Fermi level in 116,120,124,128Sn, energies and B(E2) of first 2+ states, running energy weighted sum of 120Sn, isoscalar quadrupole strengths in even-A 116Sn to 132Sn, reduced transition probabilities of the isoscalar quadrupole responses in 116,120,124,128Sn, quasiparticle contributions to the first 2+ and low-energy states in 120,124,128Sn, proton and neutron transition densities for first 2+, low-energy peak, and GQR region states of 116,120,124,128Sn. Fully self-consistent quasiparticle random phase approximation (QRPA) with Skyrme-type energy density functionals SGII, SLy5 and SkM*. Comparison with experimental values.

doi: 10.1103/PhysRevC.97.064308
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2017EB02      J.Phys.(London) G44, 103001 (2017)

J.-P.Ebran, E.Khan, T.Niksic, D.Vretenar

Localization and clustering in atomic nuclei

NUCLEAR STRUCTURE 14,16C, 16O, 24Mg, 32S; calculated nucleon localization, and formation of clusters in nucleonic matter, nucleonic density.

doi: 10.1088/1361-6471/aa809b
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2017MA73      Phys.Rev. C 96, 054317 (2017)

J.Margueron, E.Khan, F.Gulminelli

Density Functional approach for multistrange hypernuclei: Competition between Λ and Ξ0, - hyperons

NUCLEAR STRUCTURE 6He; calculated parameters and resulting bond energy for double-Λ 6He hypernucleus. 40Ca, 56Ni, 132Sn, 208Pb; calculated binding energies for multi-strange hypernuclei as a function of strangeness number. 12Be, 15C; calculated Ξ- removal energies of 12Be in ground state, and of 15C in its ground and first excited states. 40Ca, 132Sn, 240Pb; calculated Chemical potential for double hypernuclei. Z=10-120, A=20-380; calculated parameter Sinst as defined in the text using different density functionals. Competition between Λ and Ξ hyperons. Nonrelativistic density functional approach, partially constrained by ab initio calculations and experimental data, using DF-NSC89, DF-NSC97a, and DF-NSC97f density functionals.

doi: 10.1103/PhysRevC.96.054317
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2017MU05      Nat.Phys. 13, 152 (2017)

A.Mutschler, A.Lemasson, O.Sorlin, D.Bazin, C.Borcea, R.Borcea, Z.Dombradi, J.-P.Ebran, A.Gade, H.Iwasaki, E.Khan, A.Lepailleur, F.Recchia, T.Roger, F.Rotaru, D.Sohler, M.Stanoiu, S.R.Stroberg, J.A.Tostevin, M.Vandebrouck, D.Weisshaar, K.Wimmer

A proton density bubble in the doubly magic 34Si nucleus

NUCLEAR REACTIONS 9Be(34Si, p)33Al, E<140 MeV/nucleon; measured reaction products, Eγ, Iγ. 34Si; deduced γ-ray energies, parallel momentum distributions of the strongest populated states, neutron and proton density distributions. Comparison with available data.

doi: 10.1038/nphys3916
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2017PI07      Phys.Rev. D 95, 075026 (2017)

H.Pihan-Le Bars, C.Guerlin, R.-D.Lasseri, J.-P.Ebran, Q.G.Bailey, S.Bize, E.Khan, P.Wolf

Lorentz-symmetry test at Planck-scale suppression with nucleons in a spin-polarized 133Cs cold atom clock

ATOMIC PHYSICS 133Cs; analyzed available data; deduced an improved model that links the frequency shift of the 133Cs hyperfine Zeeman transitions to the Lorentz-violating Standard Model extension (SME) coefficients of the proton and neutron.

doi: 10.1103/PhysRevD.95.075026
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2017YU03      Phys.Rev. C 96, 024303 (2017)

E.Yuksel, G.Colo, E.Khan, Y.F.Niu, K.Bozkurt

Multipole excitations in hot nuclei within the finite temperature quasiparticle random phase approximation framework

NUCLEAR STRUCTURE 68Ni, 120,122Sn; calculated isovector dipole and isoscalar quadrupole strength functions as function of temperature within the fully self-consistent finite temperature quasiparticle random phase approximation framework, based on the Skyrme-type SLy5 energy density functional. Comparison with available experimental data.

doi: 10.1103/PhysRevC.96.024303
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2016CA13      Acta Phys.Pol. B47, 937 (2016)

D.Carbone, C.Agodi, F.Cappuzzello, M.Cavallaro, A.Foti, E.Khan

Collective Excitations in the 14C Nucleus Populated by the 12C(18O, 16O) Reaction at 84 MeV

NUCLEAR REACTIONS 12C(18O, 16O)14C, E=84 MeV; measured reaction products; deduced resonance energy. Comparison with continuum quasi-particle random phase approximation calculations.

doi: 10.5506/APhysPolB.47.937
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2016EB02      Phys.Rev. C 94, 024304 (2016)

J.-P.Ebran, A.Mutschler, E.Khan, D.Vretenar

Spin-orbit interaction in relativistic nuclear structure models

NUCLEAR STRUCTURE 16O, 34Si, 208Pb; calculated radial dependence of proton and neutron ratio of parameters of spin-orbit potential for the ground states using RMF effective interactions DD-ME2 and DD-PC1, and relativistic Hartree-Fock effective interaction PKO2. 202,204,206,208,210,212,214Pb; calculated isotope shifts using RMF with DD-ME2 and PKO2 interactions, and relativistic Hartree-Fock effective interaction PKO2. Comparison with experimental data. Relativistic self-consistent mean-field (SCMF) models.

doi: 10.1103/PhysRevC.94.024304
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2016MU03      Phys.Rev. C 93, 034333 (2016)

A.Mutschler, O.Sorlin, A.Lemasson, D.Bazin, C.Borcea, R.Borcea, A.Gade, H.Iwasaki, E.Khan, A.Lepailleur, F.Recchia, T.Roger, F.Rotaru, M.Stanoiu, S.R.Stroberg, J.A.Tostevin, M.Vandebrouck, D.Weisshaar, K.Wimmer

Spectroscopy of 35P using the one-proton knockout reaction

NUCLEAR REACTIONS 9Be(36S, 35P), (36S, 36P), E=88 MeV/nucleon, [secondary 36S beam from 9Be(48Ca, X), E=140 MeV/nucleon primary reaction]; measured Eγ, Iγ, γγ-coin, parallel momentum distributions using A1900 fragment separator, S800 spectrograph and GRETINA array at NSCL-MSU. 35P; deduced levels, J, π, L-transfers, spectroscopic factors. 36P; measured Eγ, parallel momentum distribution; deduced level population. 36S; deduced proton occupancies.

doi: 10.1103/PhysRevC.93.034333
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2015BA52      Phys.Lett. B 751, 371 (2015)

S.Bagchi, J.Gibelin, M.N.Harakeh, N.Kalantar-Nayestanaki, N.L.Achouri, H.Akimune, B.Bastin, K.Boretzky, H.Bouzomita, M.Caamano, L.Caceres, S.Damoy, F.Delaunay, B.Fernandez-Dominguez, M.Fujiwara, U.Garg, G.F.Grinyer, O.Kamalou, E.Khan, A.Krasznahorkay, G.Lhoutellier, J.F.Libin, S.Lukyanov, K.Mazurek, M.A.Najafi, J.Pancin, Y.Penionzhkevich, L.Perrot, R.Raabe, C.Rigollet, T.Roger, S.Sambi, H.Savajols, M.Senoville, C.Stodel, L.Suen, J.C.Thomas, M.Vandebrouck

Observation of isoscalar multipole strengths in exotic doubly-magic 56Ni in inelastic α scattering in inverse kinematics

NUCLEAR REACTIONS 4He(56Ni, α), E=50 MeV/nucleon; measured reaction products, Eα, Iα; deduced inelastic σ(θ), Isoscalar Giant Monopole Resonance (ISGMR) and the Isoscalar Giant Dipole Resonance (ISGDR) strength functions.

doi: 10.1016/j.physletb.2015.10.060
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2015KH07      Phys.Rev. C 92, 044313 (2015)

E.Khan, J.Margueron, F.Gulminelli, Ad.R.Raduta

Microscopic evaluation of the hypernuclear chart with Λ hyperons

NUCLEAR STRUCTURE 5,6He, 38Si, 144Ce, 210,216,228,248,278Pb; calculated density profiles of hypernuclei. Z≤120; calculated binding energies and the Λ-hypernuclear chart of even-even hypernuclei for Λ=2, 8, 20, 40, 70. 62,68Ni, 110Zr, 144Ce, 278Pb; calculated binding energies of hypernucleons with Λ=2, 6 for Ni, Λ=20 for Zr, Λ=40 for Ce and Λ=70 for Pb. Density-functional approach with microscopic Bruckner-Hartree-Fock calculations and the ΛΛ term treated in a phenomenological way. First microscopic evaluation of the Λ-hypernuclear landscape. Predicted a large number of bound even-even Λ-hypernuclei.

doi: 10.1103/PhysRevC.92.044313
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2015LE17      Phys.Rev. C 92, 054309 (2015)

A.Lepailleur, K.Wimmer, A.Mutschler, O.Sorlin, J.C.Thomas, V.Bader, C.Bancroft, D.Barofsky, B.Bastin, T.Baugher, D.Bazin, V.Bildstein, C.Borcea, R.Borcea, B.A.Brown, L.Caceres, A.Gade, L.Gaudefroy, S.Grevy, G.F.Grinyer, H.Iwasaki, E.Khan, T.Kroll, C.Langer, A.Lemasson, O.Llidoo, J.Lloyd, E.Lunderberg, F.Negoita, F.de Oliveira Santos, G.Perdikakis, F.Recchia, T.Redpath, T.Roger, F.Rotaru, S.Saenz, M.-G.Saint-Laurent, D.Smalley, D.Sohler, M.Stanoiu, S.R.Stroberg, M.Vandebrouck, D.Weisshaar, A.Westerberg

Spectroscopy of 28Na: Shell evolution toward the drip line

NUCLEAR REACTIONS 9Be(36S, X)22N/24O, 26F/27Ne/28Ne/29Na/30Na, E=77.6 MeV/nucleon; measured production yields using LISE spectrometer at GANIL. 9Be(31Mg, 28Na), (32Mg, 28Na), E=95 MeV/nucleon, [secondary 31,32Mg beams from 9Be(48Ca, X), E=140 MeV/nucleon using A1900 separator at NSCL-MSU; measured Eγ, Iγ, (28Na)γ-, γγ-coin, level half-life using S800 spectrograph for 28Na and GRETINA array for γ detection. 28Na; deduced levels, J, π, multipolarity. Comparison with shell-model calculations using WBA-M and USDA interactions. Systematics of binding energies for 26F, 28Na, 30Al. 25O, 26F, 27Ne; calculated levels, J, π using shell-model with WBA-M interaction.

RADIOACTIVITY 28Ne(β-)[from 9Be(36S, X), E=77.6 MeV/nucleon at GANIL]; measured Eγ, Iγ, Eβ, βγ-coin, half-life of 28Ne activity using EXOGAM array for γ detection. 28Na; deduced levels, J, π, β feedings, logft. Comparison with shell model using the USDA interaction. 27,28Al, 27,28Mg, 28Si; observed γ rays from β decay of contaminants.

doi: 10.1103/PhysRevC.92.054309
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2015VA13      Phys.Rev. C 92, 024316 (2015)

M.Vandebrouck, J.Gibelin, E.Khan, N.L.Achouri, H.Baba, D.Beaumel, Y.Blumenfeld, M.Caamano, L.Caceres, G.Colo, F.Delaunay, B.Fernandez-Dominguez, U.Garg, G.F.Grinyer, M.N.Harakeh, N.Kalantar-Nayestanaki, N.Keeley, W.Mittig, J.Pancin, R.Raabe, T.Roger, P.Roussel-Chomaz, H.Savajols, O.Sorlin, C.Stodel, D.Suzuki, J.C.Thomas

Isoscalar response of 68Ni to α-particle and deuteron probes

NUCLEAR REACTIONS 2H(68Ni, d'), 4He(68Ni, α'), E=50 MeV/nucleon, [68Ni secondary beam from 9Be(70Zn, X), E=62.3 MeV/nucleon primary reaction, and using LISE3 separator at GANIL]; measured scattered particle spectra of recoiling ions, α and deuterons using active target MAYA which is a time projection chamber (TPC). 68Ni; deduced excitation-energy spectrum, angular distributions, L transfers, centroids of isoscalar giant monopole resonances (ISGMR and soft ISGMR), isoscalar giant dipole resonances (ISGDR) and isoscalar giant quadrupole resonance (ISGQR), proton distribution coming from deuteron breakup on 68Ni. Calculated angular distributions for 68Ni(d, d') and 68Ni(α, α') by DWBA approach. Discussed systematics of isoscalar giant resonances for 56,58,60,62,64,68Ni.

doi: 10.1103/PhysRevC.92.024316
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2014DE10      Acta Phys.Pol. B45, 437 (2014)

M.De Napoli, M.Cavallaro, J.A.Scarpaci, F.Cappuzzello, C.Agodi, M.Assie, F.Azaiez, M.Bondi, D.Carbone, A.Cunsolo, A.Foti, E.Khan, S.Franchoo, R.Linares, D.Nicolosi, I.Stefan, S.Tropea

High Excitation Energy Modes in 118Sn Populated by the 120Sn(p, t)118Sn Reaction at 35 MeV

NUCLEAR REACTIONS 120Sn(p, t), E=35 MeV; measured reaction products; deduced σ(θ, E).

doi: 10.5506/APhysPolB.45.437
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2014DE22      Bull.Rus.Acad.Sci.Phys. 78, 588 (2014)

M.De Napoli, M.Cavallaro, J.A.Scarpaci, F.Cappuzzello, C.Agodi, M.Assie, F.Azaiez, M.Bondi, D.Carbone, A.Cunsolo, A.Foti, E.Khan, S.Franchoo, R.Linares, D.Nicolosi, I.Stefan, S.Tropea

Study of new resonances at high excitation energy by the 120Sn(p, t)118Sn reaction at 35 MeV

NUCLEAR REACTIONS 120Sn(p, t), E=35 MeV; measured reaction products; deduced σ(θ, E), excitation energy spectrum, resonance width.

doi: 10.3103/S1062873814070193
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2014EB01      Phys.Rev. C 89, 031303 (2014)

J.-P.Ebran, E.Khan, T.Niksic, D.Vretenar

Cluster-liquid transition in finite, saturated fermionic systems

NUCLEAR STRUCTURE 20Ne; calculated self-consistent deformation energy curve as function of β2, reflection-asymmetric axial intrinsic density. 16O; calculated self-consistent intrinsic nucleon density. Deformation-constrained self-consistent mean-field calculations using RHB model with the DD-ME2 density functional. Cluster formation in finite nuclei and in dilute nuclear matter. Mott-like transition.

doi: 10.1103/PhysRevC.89.031303
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2014EB03      Phys.Rev. C 90, 054329 (2014)

J.-P.Ebran, E.Khan, T.Niksic, D.Vretenar

Density functional theory studies of cluster states in nuclei

NUCLEAR STRUCTURE 36Ar; calculated neutron single-particle levels, binding energy curves as function of deformation parameter β2. 12C, 20Ne; calculated energy gap between occupied neutron levels as a function of β2, total nucleonic density. 8Be, 12C, 16O, 20Ne, 24Mg, 28Si, 32S, 36Ar, 40Ca; calculated positive-parity projected density plots for excited configurations in N=Z nuclei. 8Be, 12C; calculated self-consistent energy surfaces as function of β2 and β3 deformation parameters, contours of neutron density, surface plots of the partial densities. 8,9,10,11,12,13,14Be; calculated total, proton, and neutron self-consistent mean-field (SCMF) equilibrium intrinsic densities. 10,14Be, 10,14,16C; calculated nucleonic densities for excited configuration. Relativistic Hartree-Bogoliubov calculations of cluster states in light N=Z and neutron-rich nuclei in the framework of nuclear energy density functionals functional DD-ME2.

doi: 10.1103/PhysRevC.90.054329
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2014MA11      Eur.Phys.J. A 50, 18 (2014)

J.Margueron, E.Khan, G.Colo, K.Hagino, H.Sagawa

Effect of pairing on the symmetry energy and the incompressibility

NUCLEAR STRUCTURE 120Sn; calculated mass excess, pairing correlations, incompressibility, symmetry energy using HFB modeling with different pairing interactions.

doi: 10.1140/epja/i2014-14018-9
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2014VA07      Phys.Rev.Lett. 113, 032504 (2014)

M.Vandebrouck, J.Gibelin, E.Khan, N.L.Achouri, H.Baba, D.Beaumel, Y.Blumenfeld, M.Caamano, L.Caceres, G.Colo, F.Delaunay, B.Fernandez-Dominguez, U.Garg, G.F.Grinyer, M.N.Harakeh, N.Kalantar-Nayestanaki, N.Keeley, W.Mittig, J.Pancin, R.Raabe, T.Roger, P.Roussel-Chomaz, H.Savajols, O.Sorlin, C.Stodel, D.Suzuki, J.C.Thomas

Measurement of the Isoscalar Monopole Response in the Neutron-Rich Nucleus 68Ni

NUCLEAR REACTIONS 4He(68Ni, α), E=50 MeV/nucleon; measured reaction products, Eα, Iα. 68Ni; deduced σ(θ), isoscalar monopole strength. DWBA and RPA transition densities analysis.

doi: 10.1103/PhysRevLett.113.032504
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2014YU04      Phys.Rev. C 89, 064322 (2014)

E.Yuksel, N.Van Giai, E.Khan, K.Bozkurt

Effects of the tensor force on the ground state and first 2+ states of the magic 54Ca nucleus

NUCLEAR STRUCTURE 54Ca, 56Ti, 58Cr, 60Fe; calculated single-particle spectra, occupation probabilities for the neutron states in N=34 isotones. 42,44,46,48,50,52,54Ca; calculated energies and B(E2) of first 2+ states with and without the inclusion of tensor force in the mean-field; deduced magic nature of 52,54Ca isotopes. Importance of the tensor force on the shell evolution of p-f shell nuclei. Hartree-Fock-Bogoliubov (HFB) and Hartree-Fock (HF)+BCS methods using Skyrme-type SLy5, SLy5+T, and T44 interactions. Comparison with experimental data.

doi: 10.1103/PhysRevC.89.064322
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2014YU06      Eur.Phys.J. A 50, 160 (2014)

E.Yuksel, E.Khan, K.Bozkurt, G.Colo

Effect of temperature on the effective mass and the neutron skin of nuclei

NUCLEAR STRUCTURE 112,120Sn; calculated neutron pairing gap vs temperature, proton and neutron radii vs temperature, partial density of states using finite-temperature Hartree-Fock-BCS with zero-range Skyrme forces. 100,102,104,106,108,110,112,114,116,118,120Sn; calculated neutron skin vs neutron number using finite-temperature Hartree-Fock-BCS with zero-range Skyrme forces. 120Sn; calculated neutron levels, J, nucleon effective mass vs temperature and critical temperature, neutron and proton densities vs radius and temperature using different Skyrme interactions.

doi: 10.1140/epja/i2014-14160-4
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2013EB01      Phys.Rev. C 87, 044307 (2013)

J.-P.Ebran, E.Khan, T.Niksic, D.Vretenar

Localization and clustering in the nuclear Fermi liquid

NUCLEAR STRUCTURE 16O, 20Ne, 24Mg, 28Si, 32S, 40Ca, 90Zr, 208Pb; calculated localization parameter α for cluster structures, ground-state density contours. Nuclear energy density functionals SLy4 and DD-ME2. Formation of liquid drops, clusters, and halo structures in nuclei.

doi: 10.1103/PhysRevC.87.044307
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2013KH02      Phys.Scr. T152, 014008 (2013)

E.Khan

Exotic nuclear excitations

NUCLEAR STRUCTURE 68,78Ni; calculated monopole and dipole strengths; deduced soft monopole response.

doi: 10.1088/0031-8949/2013/T152/014008
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2013KH08      Phys.Rev. C 87, 064311 (2013)

E.Khan, N.Paar, D.Vretenar, L.-G.Cao, H.Sagawa, G.Colo

Incompressibility of finite fermionic systems: Stable and exotic atomic nuclei

NUCLEAR STRUCTURE Z=50, A=94-168; Z=82, A=170-262; calculated nuclear incompressibility using microscopic Skyrme-CHFB method, the Skyrme-QRPA, and the relativistic QRPA. 110,114,118,122,126,130,134,138,142,146Sn, 200,204,208,212,216,220,224,228,232,236Pb; calculated isoscalar monopole response, nuclear compressibility using the relativistic QRPA with the DD-ME2 functional and the QRPA with the functional SLy5.

doi: 10.1103/PhysRevC.87.064311
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2013KH14      Phys.Rev. C 88, 034319 (2013)

E.Khan, J.Margueron

Determination of the density dependence of the nuclear incompressibility

NUCLEAR STRUCTURE 120Sn, 208Pb; calculated equation of state (EoS) incompressibility K(ρ), centroids of the isoscalar giant monopole resonances (GMR) as functions of K(ρ), and density-dependent incompressibility Mc around the crossing density using various relativistic and nonrelativistic density functionals, and local density approximation (LDA).

doi: 10.1103/PhysRevC.88.034319
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2013YU05      Eur.Phys.J. A 49, 124 (2013)

E.Yuksel, E.Khan, K.Bozkurt

The soft Giant Monopole Resonance as a probe of the spin-orbit splitting

NUCLEAR STRUCTURE 100,132Sn, 208Pb; calculated isoscalar monopole strength distribution using Skyrme HF plus RPA model.

doi: 10.1140/epja/i2013-13124-6
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2012FA10      Phys.Rev. C 86, 035805 (2012)

A.F.Fantina, E.Khan, G.Colo, N.Paar, D.Vretenar

Stellar electron-capture rates on nuclei based on a microscopic Skyrme functional

NUCLEAR REACTIONS 54,56Fe, 70,72,74,76,78,80Ge(e, ν), E=0-30 MeV; calculated stellar electron capture cross sections and rates for stellar environment. Skyrme Hartree-Fock model using SLy4, SGII, SkM*, BSk17 interactions, random-phase approximation (RPA). Comparison of FTSHF+RPA results with cross sections obtained by the SMMC and FTRRPA calculations.

doi: 10.1103/PhysRevC.86.035805
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2012KH08      Phys.Rev.Lett. 109, 092501 (2012)

E.Khan, J.Margueron, I.Vidana

Constraining the Nuclear Equation of State at Subsaturation Densities

NUCLEAR STRUCTURE 208Pb; calculated matter density, energy per unit of volume at the crossing density. Comparison with available data.

doi: 10.1103/PhysRevLett.109.092501
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2012KH10      Phys.Scr. T150, 014018 (2012)

E.Khan

Measurement of Giant Monopole Resonance in unstable nuclei and the determination of the nuclear matter incompressibility

NUCLEAR STRUCTURE 120Sn; calculated density-dependent incompressibility. Skyrme interactions: constrained Hartree-Fock, constrained Hartree-Fock Bogoliubov and constrained Hartree-Fock Bogoliubov using the mixed type pairing.

doi: 10.1088/0031-8949/2012/T150/014018
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2012MA58      Phys.Rev. C 86, 065801 (2012)

J.Margueron, E.Khan

Suppression, persistence, and reentrance of superfluidity near and beyond the neutron drip

NUCLEAR STRUCTURE N=20-300, Z=28, 36, 38, 40, 42, 44, 50, 52; calculated neutron pairing gaps versus neutron density for neutron drip-line nuclei. 160,176,180,200Sn; calculated temperature-averaged neutron pairing gap versus temperature. Superfluid reentrant effect. Role of continuum coupling in suppression, persistence, and reentrance of pairing. HFB approach, Wigner-Seitz cells modeling.

doi: 10.1103/PhysRevC.86.065801
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2012YU01      Nucl.Phys. A877, 35 (2012)

E.Yuksel, E.Khan, K.Bozkurt

Analysis of the neutron and proton contributions to the pygmy dipole mode in doubly magic nuclei

NUCLEAR STRUCTURE 16,24O, 40,48,70Ca, 56,68,78Ni, 100,132Sn, 208Pb; calculated GDR, Pygmy dipole strength distribution using self-consistent HF+RPA with Skyrme interactions. Comparison with data.

doi: 10.1016/j.nuclphysa.2012.01.006
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2011EB02      Phys.Rev. C 83, 064323 (2011)

J.-P.Ebran, E.Khan, D.Pena Arteaga, D.Vretenar

Relativistic Hartree-Fock-Bogoliubov model for deformed nuclei

NUCLEAR STRUCTURE 18,22,26,30Ne; calculated proton and neutron density contours. 22,24,26,28,30,32,34,36,38,40Mg; calculated two-neutron separation energies. 18,20,22,24,26,28,30,32Ne;calculated binding energies, charge radii, deformation parameter. 10,12,14,16,18,20,22C; calculated deformation parameter. 26Ne, 28Mg; calculated single proton and neutron levels. Relativistic Hartree-Fock-Bogoliubov model for axially deformed nuclei (RHFBz) using effective Lagrangian with density-dependent meson-nucleon couplings in the particle-hole channel and the central part of the Gogny force in the particle-particle channel. Comparison with experimental data.

doi: 10.1103/PhysRevC.83.064323
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2011KH04      Int.J.Mod.Phys. E20, 387 (2011)

E.Khan, N.Sandulescu

Microscopic description of temperature and pairing effects in nuclei

NUCLEAR STRUCTURE 84Ni, 124,130Sn; calculated specific heat. FT-HFB framework.

doi: 10.1142/S0218301311017764
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2011KH10      Phys.Rev. C 84, 051301 (2011)

E.Khan, N.Paar, D.Vretenar

Low-energy monopole strength in exotic nickel isotopes

NUCLEAR STRUCTURE 68Ni; calculated isoscalar monopole strength, neutron and proton transition densities in 10-40 MeV region. 60,62,64,66,68,70,72,74,76,78Ni; calculated monopole response in 10-40 MeV range. Microscopic Skyrme HF+RPA and relativistic RHB+RQRPA models.

doi: 10.1103/PhysRevC.84.051301
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2011MO06      Phys.Rev. C 83, 037302 (2011)

B.Mouginot, E.Khan, R.Neveling, F.Azaiez, E.Z.Buthelezi, S.V.Fortsch, S.Franchoo, H.Fujita, J.Mabiala, J.P.Mira, P.Papka, A.Ramus, J.A.Scarpaci, F.D.Smit, I.Stefan, J.A.Swartz, I.Usman

Search for the giant pairing vibration through ( p, t) reactions around 50 and 60 MeV

NUCLEAR REACTIONS 120Sn, 205Pb(p, t), E=50, 60 MeV; measured E(t), I(t), TOF; deduced σ; investigated existence of giant pairing vibration (GPV) in 120Sn and 205Pb. No clear signal found for GPV.

doi: 10.1103/PhysRevC.83.037302
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2011PE26      Phys.Rev. C 84, 045806 (2011)

D.Pena Arteaga, M.Grasso, E.Khan, P.Ring

Nuclear structure in strong magnetic fields: Nuclei in the crust of a magnetar

NUCLEAR STRUCTURE 16O, 56Fe; calculated evolution of single-particle level energies, binding energy per article, radius, and β deformation as a function of magnetic field strengths. Z=22-30, N=22-36; calculated minimum magnetic field for which the first level crossing at the Fermi energy occurs. Influence of strong magnetic fields on nuclear structure using a fully self-consistent covariant density functional.

doi: 10.1103/PhysRevC.84.045806
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2011PL01      Phys.Rev. C 83, 034613 (2011)

E.Pllumbi, M.Grasso, D.Beaumel, E.Khan, J.Margueron, J.van de Wiele

Probing the pairing interaction through two-neutron transfer reactions

NUCLEAR REACTIONS 124,136Sn(p, t), E=15-35 MeV; analyzed differential σ, σ(θ), form factors, σ(g.s.)/σ(excited 0+) using one-step distorted-wave Born approximation (DWBA) with HFB+QRPA for transition densities and form factors.

doi: 10.1103/PhysRevC.83.034613
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2011SA23      Phys.Atomic Nuclei 74, 701 (2011)

S.Savovic, A.Djordjevich, S.Jokic, E.U.Khan

Mass transfer during the prefission step in the 17.0-MeV/u 132Xe + 238U interaction

NUCLEAR REACTIONS 238U(132Xe, X), E=17 MeV/nucleon; analyzed experimental data; deduced yields, applicability of Fokker-Planck equation.

doi: 10.1134/S1063778811040120
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2011SC15      Int.J.Mod.Phys. E20, 1038 (2011)

J.A.Scarpaci, M.Fallot, D.Lacroix, M.Assie, L.Lefebvre, N.Frascaria, D.Beaumel, C.Bhar, Y.Blumenfeld, A.Chbihi, Ph.Chomaz, P.Desesquelle, J.Frankland, H.Idbarkach, E.Khan, J.L.Laville, E.Plagnol, E.C.Pollacco, P.Roussel-Chomaz, J.C.Roynette, A.Shrivastava, T.Zerguerras

Probing pre-formed alpha particles in the ground state of nuclei

NUCLEAR REACTIONS Ca(40Ca, 40Caα), E=50 MeV/nucleon; measured reaction products; deduced σ(θ).

doi: 10.1142/S0218301311019222
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2010KH03      Phys.Rev. C 82, 024322 (2010)

E.Khan, J.Margueron, G.Colo, K.Hagino, H.Sagawa

Effect of pairing correlations on incompressibility and symmetry energy in nuclear matter and finite nuclei

NUCLEAR STRUCTURE 114,120Sn, 208Pb; calculated effects of pairing correlations on incompressibility and symmetry energy using a microscopic constrained-HFB approach with several pairing functionals. Evaluated pairing effect on the centroid energies of the isoscalar giant monopole resonances (GMR) in Pb and Sn isotopes.

doi: 10.1103/PhysRevC.82.024322
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2010SC21      Phys.Rev. C 82, 031301 (2010); Publishers note Phys.Rev. C 82, 039902 (2010)

J.A.Scarpaci, M.Fallot, D.Lacroix, M.Assie, L.Lefebvre, N.Frascaria, D.Beaumel, C.Bhar, Y.Blumenfeld, A.Chbihi, Ph.Chomaz, P.Desesquelles, J.Frankland, H.Idbarkach, E.Khan, J.L.Laville, E.Plagnol, E.C.Pollacco, P.Roussel-Chomaz, J.C.Roynette, A.Shrivastava, T.Zerguerras

Probing preformed α particles in the ground state of nuclei

NUCLEAR REACTIONS 40Ca(40Ca, α), E=50 MeV/nucleon; measured Eα, Iα, σ, σ(θ). 36Ar; deduced missing energy spectrum, levels, J, π. Comparison of σ(θ) with calculations using time-dependent Schroedinger equation (TDSE).

doi: 10.1103/PhysRevC.82.031301
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2009CH03      Phys.Rev. C 79, 012801 (2009)

N.Chamel, J.Margueron, E.Khan

Neutron specific heat in the crust of neutron stars from the nuclear band theory

NUCLEAR STRUCTURE Z=40, N=160, 210, 280; calculated neutron-specific heat using band theory of solids with Skyrme nucleon-nucleon interaction.

doi: 10.1103/PhysRevC.79.012801
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2009GR04      Phys.Rev. C 79, 034318 (2009)

M.Grasso, L.Gaudefroy, E.Khan, T.Niksic, J.Piekarewicz, O.Sorlin, N.Van Giai, D.Vretenar

Nuclear "bubble" structure in 34Si

NUCLEAR STRUCTURE 22,24O, 34,36Si; calculated neutron densities, charge densities, binding energies, charge radii, neutron skin thickness. Shell model, non-relativistic mean-field approach and relativistic mean-field approach calculations.

doi: 10.1103/PhysRevC.79.034318
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2009GR16      Int.J.Mod.Phys. E18, 2009 (2009)

M.Grasso, E.Khan, J.Margueron, N.Van Giai, L.Gaudefroy, T.Niksic, D.Vretenar, J.Piekarewicz, O.Sorlin

Bubbles in exotic nuclei

NUCLEAR STRUCTURE 46,68Ar; calculated proton densities with SkI5, SLy4 interactions in the HF approach.

doi: 10.1142/S0218301309014184
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2009KH04      Phys.Rev. C 80, 011307 (2009)

E.Khan

Role of superfluidity in nuclear incompressibilities

NUCLEAR STRUCTURE 112,114,116,118,120,122,124,126,128,130,132,134,136Sn; calculated excitation energies of the Giant Monopole Resonance (GMR) and nuclear incompressibilities using constrained Hartree-Fock Bogoliubov calculations.

doi: 10.1103/PhysRevC.80.011307
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2009KH08      Phys.Rev. C 80, 044328 (2009)

E.Khan, M.Grasso, J.Margueron

Constraining the nuclear pairing gap with pairing vibrations

NUCLEAR STRUCTURE 124,136Sn; analyzed neutron quasiparticle states, response functions and neutron transition densities using Hartree-Fock-Bogoliubov (HFB) model and quasiparticle random-phase approximation (QRPA).

doi: 10.1103/PhysRevC.80.044328
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2009KH11      Phys.Rev. C 80, 057302 (2009)

E.Khan

Giant monopole resonance in Pb isotopes

NUCLEAR STRUCTURE 204,206,208,210,212Pb; calculated excitation energies of isoscalar giant monopole resonance (IGMR) using constrained Hartree-Fock-Bogoliubov (CHFB) method and the SLy4 and SkM* interactions. Comparison with experimental data.

doi: 10.1103/PhysRevC.80.057302
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2009NA24      Braz.J.Phys. 39, 539 (2009)

T.Nasir, E.U.Khan, J.J.Baluch, S.-U.Rehman, Matiullah, M.Rafique

Sequential and double sequential fission observed in heavy ion interaction of (11.67 MeV/u)197Au projectile with 197Au target

NUCLEAR REACTIONS 197Au(197Au, X), E=11.67 MeV/nucleon; measured reaction fragments; deduced sequential and double sequential fission, mass transfer, kinetic energy loss, scattering angles. Computer code PRONGY.

doi: 10.1590/S0103-97332009000500005
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2009PA43      Phys.Rev. C 80, 055801 (2009)

N.Paar, G.Colo, E.Khan, D.Vretenar

Calculation of stellar electron-capture cross sections on nuclei based on microscopic Skyrme functionals

NUCLEAR REACTIONS 56Fe(e, ν), E=4-60 MeV; Ni, 48Ti, 50Cr, 68Ge, 72Ge, 76Ge(e, ν), E=5-30 MeV; calculated stellar electron capture cross sections at different temperatures with finite-temperature Skyrme Hartree-Fock plus RPA approach. Comparison with cross sections calculated from the shell-model Monte Carlo (SMMC) GT-strength distributions.

NUCLEAR STRUCTURE 74Ge; calculated occupation percentages of proton and neutron orbitals, and temperature dependence of GT strength distributions with the finite-temperature proton-neutron RPA model based on the Skyrme SGII interaction.

doi: 10.1103/PhysRevC.80.055801
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2009PE05      Phys.Rev. C 79, 034311 (2009)

D.Pena Arteaga, E.Khan, P.Ring

Isovector dipole strength in nuclei with extreme neutron excess

NUCLEAR STRUCTURE 132,134,136,138,140,142,144,146,148,150,152,154,156,158,160,162,164,166Sn; calculated isovector dipole (E1) resonance strengths and energies of GDR and PDR, total pygmy dipole strength, transition densities. Relativistic quasiparticle random phase approximation (RQRPA).

doi: 10.1103/PhysRevC.79.034311
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2008GR13      Nucl.Phys. A807, 1 (2008)

M.Grasso, E.Khan, J.Margueron, N.Van Giai

Low-energy excitations in nuclear systems: From exotic nuclei to the crust of neutron stars

NUCLEAR STRUCTURE Z=40, 50; calculated neutron densities, quadrupole strength distributions using QRPA in relation to neutron stars.

doi: 10.1016/j.nuclphysa.2008.04.003
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2008KH01      Nucl.Phys. A800, 37 (2008)

E.Khan, M.Grasso, J.Margueron, N.Van Giai

Detecting bubbles in exotic nuclei

NUCLEAR STRUCTURE 46Ar; calculated proton density, monopole, dipole and quadrupole strength functions using Hartree-Fock approach.

doi: 10.1016/j.nuclphysa.2007.11.012
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2008MO02      Phys.Rev.Lett. 100, 042501 (2008)

C.Monrozeau, E.Khan, Y.Blumenfeld, C.E.Demonchy, W.Mittig, P.Roussel-Chomaz, D.Beaumel, M.Caamano, D.Cortina-Gil, J.P.Ebran, N.Frascaria, U.Garg, M.Gelin, A.Gillibert, D.Gupta, N.Keeley, F.Marechal, A.Obertelli, J-A.Scarpaci

First Measurement of the Giant Monopole and Quadrupole Resonances in a Short-Lived Nucleus: 56Ni

NUCLEAR REACTIONS 2H(56Ni, 56Ni), E=50 MeV/nucleon; measured deuteron recoil energies and yields. 56Ni; deduced isoscaler giant monopole and giant quadrupole resonance centroids and angular distributions.

doi: 10.1103/PhysRevLett.100.042501
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO1613. Data from this article have been entered in the XUNDL database. For more information, click here.


2007CH44      Phys.Rev. C 75, 055806 (2007)

N.Chamel, S.Naimi, E.Khan, J.Margueron

Validity of the Wigner-Seitz approximation in neutron star crust

doi: 10.1103/PhysRevC.75.055806
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2007FA17      Nucl.Phys. A788, 106c (2007)

M.Fallot, J.A.Scarpaci, N.Frascaria, Y.Blumenfeld, A.Chbihi, Ph.Chomaz, P.Desesquelles, J.Frankland, E.Khan, J.L.Laville, E.Plagnol, E.C.Pollacco, P.Roussel-Chomaz, J.C.Roynette, A.Shrivastava, T.Zerguerras

Decay of 1, 2 and 3-phonon states in 40Ca

NUCLEAR REACTIONS 40Ca(40Ca, X)39K/38Ar/36Ar/37Cl, E=50 MeV/nucleon; measured Ep, Eα, missing energy spectra. 40Ca deduced two-, three-phonon giant resonance states.

doi: 10.1016/j.nuclphysa.2007.01.055
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2007GR21      Phys.Rev. C 76, 044319 (2007)

M.Grasso, Z.Y.Ma, E.Khan, J.Margueron, N.Van Giai

Evolution of the proton sd states in neutron-rich Ca isotopes

NUCLEAR STRUCTURE 48,52,70,78Ca; calculated excitation energies. Skyrme-Hartree-Fock equations used.

doi: 10.1103/PhysRevC.76.044319
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2007KH14      Nucl.Phys. A788, 121c (2007)

E.Khan

Astrophysical roles for giant resonances in exotic nuclei

NUCLEAR REACTIONS 181Ta(γ, n), E=7.5-13.5 MeV; calculated σ. Astrophysical r-process implications and role of giant resonances discussed. Hauser-Feshbach and quasi-particle RPA models. Comparison with data.

doi: 10.1016/j.nuclphysa.2007.01.057
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2007KH15      Nucl.Phys. A789, 94 (2007)

E.Khan, N.Van Giai, N.Sandulescu

Pairing interactions and vanishing pairing correlations in hot nuclei

NUCLEAR STRUCTURE Sn; calculated mean neutron pairing gaps using finite temperature HFB calculation using Skyrme and zero-range, density-dependent pairing interactions.

doi: 10.1016/j.nuclphysa.2007.03.005
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2007MO29      Nucl.Phys. A788, 182c (2007)

C.Monrozeau, E.Khan, Y.Blumenfeld, W.Mittig, D.Beaumel, M.Caamano, D.Cortina-Gil, C.E.Demonchy, N.Frascaria, U.Garg, M.Gelin, A.Gillibert, D.Gupta, F.Marechal, A.Obertelli, P.Roussel-Chomaz, J.-A.Scarpaci

Measurement of the GMR in the Unstable 56Ni Nucleus using the Active Target Maya

NUCLEAR REACTIONS 2H(56Ni, d), E=50 MeV/nucleon; measured Ed, E(recoil), energy excitation spectrum.

doi: 10.1016/j.nuclphysa.2007.01.080
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2007PA17      Rep.Prog.Phys. 70, 691 (2007)

N.Paar, D.Vretenar, E.Khan, G.Colo

Exotic modes of excitation in atomic nuclei far from stability

doi: 10.1088/0034-4885/70/5/R02
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2007SK05      Nucl.Phys. A788, 260c (2007)

F.Skaza, V.Lapoux, N.Keeley, N.Alamanos, F.Auger, D.Beaumel, E.Becheva, Y.Blumenfeld, F.Delaunay, A.Drouart, A.Gillibert, L.Giot, E.Khan, L.Nalpas, A.Pakou, E.Pollacco, R.Raabe, P.Roussel-Chomaz, K.Rusek, J.-A.Scarpaci, J.-L.Sida, S.Stepantsov, R.Wolski

Low-lying states and structure of the exotic 8He via direct reactions on the proton

NUCLEAR STRUCTURE 8He; analyzed level energies and widths.

doi: 10.1016/j.nuclphysa.2007.01.093
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD0359.


2006BA01      Radiat.Meas. 41, 217 (2006)

J.J.Baluch, E.U.Khan, R.Tahseen, I.E.Qureshi, T.Nasir, N.ul Hassan

Study of deep inelastic collisions in the heavy-ion interaction of (14.0 MeV/u)208Pb + 238U

NUCLEAR REACTIONS 238U(208Pb, X), E=14.0 MeV/nucleon; measured fission fragment yields, angular distributions; deduced pre-fission mass distributions.

doi: 10.1016/j.radmeas.2005.07.022
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2006BE04      Phys.Rev.Lett. 96, 012501 (2006)

E.Becheva, Y.Blumenfeld, E.Khan, D.Beaumel, J.M.Daugas, F.Delaunay, Ch.-E.Demonchy, A.Drouart, M.Fallot, A.Gillibert, L.Giot, M.Grasso, N.Keeley, K.W.Kemper, D.T.Khoa, V.Lapoux, V.Lima, A.Musumarra, L.Nalpas, E.C.Pollacco, O.Roig, P.Roussel-Chomaz, J.E.Sauvestre, J.A.Scarpaci, F.Skaza, H.S.Than

N = 14 Shell Closure in 22O Viewed through a Neutron Sensitive Probe

NUCLEAR REACTIONS 1H(22O, 22O), (22O, 22O'), E=46.6 MeV/nucleon; measured particle spectra, σ(E, θ). 22O level deduced deformation parameter, shell closure features. MUST detector array.

doi: 10.1103/PhysRevLett.96.012501
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetF0738. Data from this article have been entered in the XUNDL database. For more information, click here.


2006FA07      Phys.Rev.Lett. 97, 242502 (2006)

M.Fallot, J.A.Scarpaci, N.Frascaria, Y.Blumenfeld, A.Chbihi, Ph.Chomaz, P.Desesquelles, J.Frankland, E.Khan, J.L.Laville, E.Plagnol, E.C.Pollacco, P.Roussel-Chomaz, J.C.Roynette, A.Shrivastava, T.Zerguerras

Evidence for a Three-Phonon Giant Resonance State in 40Ca Nuclei

NUCLEAR REACTIONS 40Ca(40Ca, pX)39K/38Ar/37Cl, E=50 MeV/nucleon; measured Ep, missing energy spectra. 40Ca deduced three-phonon giant resonance state.

doi: 10.1103/PhysRevLett.97.242502
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2006GU17      Nucl.Phys. A773, 230 (2006)

D.Gupta, E.Khan, Y.Blumenfeld

Folding model analysis of proton scattering from 18, 20, 22O nuclei

NUCLEAR REACTIONS 18,20,22O(p, p), (p, p'), E=43-46.6 MeV; calculated σ(E, θ). 18O(polarized p, p'), E=24.5 MeV; 18,20,22O(polarized p, p'), E=43-46.6 MeV; calculated analyzing power. Folding model approach, comparison with data.

doi: 10.1016/j.nuclphysa.2006.06.003
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2006NA30      Chin.Phys.Lett. 23, 2714 (2006)

T.Nasir, J.J.Baluch, E.U.Khan, F.N.Khattak, M.I.Shahzad

Mass Transfer: a Deciding Factor for the Multiplicity of an Event in Deep Inelastic Collisions

NUCLEAR REACTIONS 197Au(208Pb, X), E=11.67 MeV/nucleon; measured fragments kinetic energy and mass distributions, multiplicity; deduced reaction mechanism features.

doi: 10.1088/0256-307X/23/10/025
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2006RA15      Chin.Phys.Lett. 23, 1716 (2006)

M.A.Rana, E.U.Khan, M.I.Shahzad, I.E.Qureshi, F.Malik, G.Sher, S.Manzoor, H.A.Khan

Annihilation of Antiprotons in Light Nuclei

NUCLEAR REACTIONS H, C, O(p-bar, X), E=5.9 MeV; measured light charged particle yields, angular distributions following antiproton annihilation in CR-39 detector.

doi: 10.1088/0256-307X/23/7/017
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2006SH05      Chin.Phys.Lett. 23, 572 (2006)

G.Sher, M.I.Shahzad, M.Hussain, M.A.Rana, E.U.Khan

Cross Section of Heavy Ion Reaction (14.5 MeV/u) 132Xe + Bi

NUCLEAR REACTIONS Bi(132Xe, 132Xe), E=14.5 MeV/nucleon; measured σ(θ). Bi(132Xe, X), E=14.5 MeV/nucleon; measured reaction σ. Plastic track detector.

doi: 10.1088/0256-307X/23/3/013
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2005GO39      Eur.Phys.J. A 25, Supplement 1, 71 (2005)

S.Goriely, M.Samyn, J.M.Pearson, E.Khan

Recent progress in mass predictions

NUCLEAR STRUCTURE Z=8-120; A=16-340; analyzed atomic masses. Nuclear matter properties discussed. Skyrme-Hartree-Fock-Bogoliubov approach, comparison with data.

doi: 10.1140/epjad/i2005-06-022-4
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2005JO12      Phys.Rev. C 72, 014308 (2005)

C.Jouanne, V.Lapoux, F.Auger, N.Alamanos, A.Drouart, A.Gillibert, G.Lobo, A.Musumarra, L.Nalpas, E.Pollacco, J.-L.Sida, M.Trotta, Y.Blumenfeld, E.Khan, T.Suomijarvi, T.Zerguerras, P.Roussel-Chomaz, H.Savajols, A.Lagoyannis, A.Pakou

Structure of low-lying states of 10, 11C from proton elastic and inelastic scattering

NUCLEAR REACTIONS 1H(10C, 10C), (10C, 10C'), E=45.3 MeV/nucleon; 1H(11C, 11C), (11C, 11C'), E=40.6 MeV/nucleon; 1H(12C, 12C), (12C, 12C'), E=36.3 MeV/nucleon; measured elastic and inelastic σ(θ). 10,11C deduced radii, transition matrix elements.

doi: 10.1103/PhysRevC.72.014308
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD0537.


2005KH04      Chin.Phys.Lett. 22, 69 (2005)

F.N.Khattak, E.U.Khan, T.Nasir, J.J.Baluch, F.U.Khan

Inter-relationship of Various Results in Analysis of (14.0 MeV/U) Pb + Pb Reaction Using Mica and CN-85 Track Detectors

NUCLEAR REACTIONS Pb(Pb, X), E=14.0 MeV/nucleon; measured fragment yields, kinetic energy and angular distributions.

doi: 10.1088/0256-307X/22/1/020
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2005KH08      Phys.Rev. C 71, 042801 (2005)

E.Khan, N.Sandulescu, N.Van Giai

Collective excitations in the inner crust of neutron stars: Supergiant resonances

doi: 10.1103/PhysRevC.71.042801
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2005QU03      Radiat.Meas. 40, 464 (2005)

I.E.Qureshi, M.I.Shahzad, E.U.Khan, G.Sher, H.A.Khan

Study of the reaction step preceding sequential fission in the nuclear interaction (16.7 MeV/u) 238U+nat.Au

NUCLEAR REACTIONS 197Au(238U, X), E=16.7 MeV/nucleon; measured fragments mass and angular distributions, multiplicity; deduced reaction mechanism features. Mica track detectors, sequential fission.

doi: 10.1016/j.radmeas.2005.03.013
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2004GO37      Nucl.Phys. A739, 331 (2004)

S.Goriely, E.Khan, M.Samyn

Microscopic HFB + QRPA predictions of dipole strength for astrophysics applications

NUCLEAR STRUCTURE 72Ge, 82Se, 94Zr, 100Mo, 124Sn, 130Te, 142Ce, 150Sm, 208Pb; calculated photoabsorption σ, dipole strength distributions. Z=8-110; calculated Maxwellian-average neutron capture rates. HFB and quasiparticle RPA models, comparison with data.

doi: 10.1016/j.nuclphysa.2004.04.105
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