NSR Query Results
Output year order : Descending NSR database version of April 11, 2024. Search: Author = N.Paar Found 89 matches. 2024KA02 Phys.Rev. C 109, 014314 (2024) Electric dipole transitions in the relativistic quasiparticle random-phase approximation at finite temperature
doi: 10.1103/PhysRevC.109.014314
2024KA04 Phys.Rev. C 109, 024305 (2024) Finite-temperature effects in magnetic dipole transitions
doi: 10.1103/PhysRevC.109.024305
2024KU01 Nucl.Phys. A1041, 122779 (2024) Isotopic dependence of (n, α) reaction cross sections for Fe and Sn nuclei NUCLEAR REACTIONS 46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78Fe, 100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128,129,130,131,132Sn(n, α), (n, X), E<50 MeV; calculated σ using the statistical Hauser-Feshbach and exciton models in TALYS nuclear reaction code and adjusted global optical model potential. Comparison with JEFF-3.3, ENDF/B-VII.1, BROND-3.1, CENDL-3.2, JENDL-5, ROSFOND-2010 libraries and NON-SMOKER code.
doi: 10.1016/j.nuclphysa.2023.122779
2024RA05 Phys.Rev. C 109, 014318 (2024) A.Ravlic, E.Yuksel, T.Niksic, N.Paar Global properties of nuclei at finite-temperature within the covariant energy density functional theory
doi: 10.1103/PhysRevC.109.014318
2023KR01 Eur.Phys.J. A 59, 50 (2023) Magnetic quadrupole transitions in the relativistic energy density functional theory NUCLEAR STRUCTURE 16O, 48Ca, 208Pb, 18O, 42Ca, 56Fe, 90Zr, 36,38,40,42,44,46,48,50,52,54,56,58,60,62,64Ca; calculated the nuclear ground state with relativistic Hartree-Bogoliubov model, and the M2 excitations using the relativistic quasiparticle random phase approximation with the residual interaction extended with the isovector-pseudovector term.
doi: 10.1140/epja/s10050-023-00958-0
2023RA22 Phys.Rev. C 108, 054305 (2023) A.Ravlic, E.Yuksel, T.Niksic, N.Paar Influence of the symmetry energy on the nuclear binding energies and the neutron drip line position
doi: 10.1103/PhysRevC.108.054305
2023YU01 Phys.Lett. B 836, 137622 (2023) Implications of parity-violating electron scattering experiments on 48Ca (CREX) and 208Pb (PREX-II) for nuclear energy density functionals NUCLEAR STRUCTURE 48Ca, 208Pb; analyzed available data; deduced implications of CREX and PREX-II data on nuclear matter symmetry energy and isovector properties of finite nuclei: neutron skin thickness and dipole polarizability.
doi: 10.1016/j.physletb.2022.137622
2022GI06 Phys.Rev. C 105, 055801 (2022) S.Giraud, R.G.T.Zegers, B.A.Brown, J.-M.Gabler, J.Lesniak, J.Rebenstock, E.M.Ney, J.Engel, A.Ravlic, N.Paar Finite-temperature electron-capture rates for neutron-rich nuclei near N=50 and effects on core-collapse supernova simulations RADIOACTIVITY 86Kr(EC); calculated Gamow-Teller strength distribution, EC-rates for various energies of initial states, average shell occupation. N=44-54(EC); Z=26-36(EC); calculated EC-rates. Finite-temperature proton-neutron relativistic QRPA (FT-PNRQRPA), finite-temperature QRPA (FT-QRPA) and shell-model calculations. Obtained finite-temperature electron-capture rates applied in one-dimensional core-collapse simulations.
doi: 10.1103/PhysRevC.105.055801
2022KU24 Universe 8, 25 (2022) Statistical Hauser-Feshbach Model Description of (n, α) Reaction Cross Sections for the Weak s-Process NUCLEAR REACTIONS 17O, 18F, 22Na, 26Al, 33S, 37,39Ar, 40K, 41Ca, 59Ni, 65Zn, 71Ge(n, α), E=0.001-30 MeV; 17O(n, α), E=0.4-2000 keV; 26Al(n, α), E=0.1-1000 keV; 33S(n, α), E=5-1000 keV; 37Ar(n, α), E=0.01-1000 keV; 41Ca(n, α), E=0.4-150 keV; calculated reaction σ(E) using two different statistical Hauser-Feshbach model, with experimental masses, and nuclear level densities from Fermi gas model (TALYS-a), and nuclear masses and level densities calculated with the Skyrme functional (TALYS-b). Comparison with results in NON-SMOKER, TENDL-2019, ENDF-B-VIII, JEFF-3.3 and BROND-3.1 libraries, and with available experimental data. 17O, 18F, 22Na, 26Al, 33S, 37,39Ar, 40K, 41Ca, 59Ni, 65Zn, 71Ge(n, α), kT=0.008-1000 keV; calculated reaction σ(temp) averaged over the Maxwell-Boltzmann distribution. 22Na, 26Al, 33S, 37,39Ar, 40K, 41Ca, 59Ni, 65Zn, 71Ge(n, α), kT=0.007-1000 keV; calculated Maxwellian averaged cross sections (MACS) as function of temperature, and compared with results in NON-SMOKER, ENDF-B-VII.1, JEFF-3.1, JENDL-4.0, ROSFOND-2008 and CENDL-3.1 data libraries. 41Ca, 59Ni, 65Zn, 71Ge(n, α), kT=30-210 keV; calculated reaction σ(temp) averaged over the Maxwell-Boltzmann distribution. 17O, 18F, 22Na, 26Al, 33S, 37,39Ar, 40K, 41Ca, 59Ni, 65Zn, 71Ge(n, α), kT=30-210 keV; calculated σ(temp). Relevance to the s-process nucleosynthesis.
doi: 10.3390/universe8010025
2022OI01 Phys.Rev. C 105, 064309 (2022) Symmetry breaking of Gamow-Teller and magnetic-dipole transitions and its restoration in calcium isotopes NUCLEAR STRUCTURE 42,44,46,48Ca, 42Ti, 208Pb; calculated isovector M1 and GT strength distributions. Relativistic energy-density functional (REDF) with point-coupling interactions, using the relativistic quasiparticle randomphase approximation (RQRPA).
doi: 10.1103/PhysRevC.105.064309
2022PO04 Phys.Rev. C 105, 064315 (2022) Two-neutrino double-β decay matrix elements based on a relativistic nuclear energy density functional RADIOACTIVITY 48Ca, 76Ge, 82Se, 96Zr, 100Mo, 116Cd, 136Xe, 128,130Te, 150Nd(2β-); 124Xe(2EC), (2β+); calculated nuclear matrix elements (NMEs) and running sum of the Gamow-Teller NMEs for 2νββ decay modes, dependence of the NMEs for 2νββ decay on the isoscalar pairing strengths. Relativistic Hartree-Bardeen-Cooper-Schrieffer (RH-BCS) theory with density-dependent meson-exchange (DD-ME2) and point-coupling interactions (DD-PC1, DD-PCX), and pairing correlations. Comparison with available experimental data.
doi: 10.1103/PhysRevC.105.064315
2021KR07 Phys.Rev. C 103, 054306 (2021) Evolution of magnetic dipole strength in 100-140Sn isotope chain and the quenching of nucleon g factors NUCLEAR STRUCTURE 100,102,104,106,108,110,112,114,116,118,120,122,124,126,128,130,132,134,136,138,140Sn; calculated occupation probabilities of π1g9/2, ν1g9/2, ν2d5/2, and ν1h11/2 orbits in RHB-GS solutions, M1 transition strength function, partial M1 transition strengths for protons and neutrons, M1 excitation energies, total M1 transition strengths, energy-weighted summation of M1 strengths. RHB+R(Q)RPA formulated in the framework of relativistic nuclear energy density functional (RNEDF) (DD-PC1) with Gogny-D1S force for the pairing correlations. Comparison with experimental data.
doi: 10.1103/PhysRevC.103.054306
2021MI17 Phys.Rev. C 104, 044321 (2021) β-delayed neutron-emission and fission calculations within relativistic quasiparticle random-phase approximation and a statistical model RADIOACTIVITY Z=8-110, N=11-209, A=19-318(β-), (β-n); calculated T1/2, β--delayed neutron emission (BDNE) branching ratios (P0n, P1n, P2n, P3n, P4n, P5n, P6n, P7n, P8n, P9n, P10n), mean number of delayed neutrons per beta-decay, and average delayed neutron kinetic energy, total beta-delayed fission and α emission branching ratios for four fission barrier height models (ETFSI, FRDM, SBM, HFB-14). Z=93-110, N=184-200, A=224-318; calculated T1/2, β--delayed fission (BDF) branching ratios (P0f, P1f, P2f, P3f, P4f, P5f, P6f, P7f, P8f, P9f, P10f), total beta-delayed fission and beta-delayed neutron emission branching ratios for four fission barrier height models 140,162Sn; calculated β strength functions, β--delayed neutron branching ratios from P0n to P10n by pn-RQRPA+HFM and pn-RQRPA methods. 137,138,139,140,156,157,158,159,160,161,162Sb; calculated isotope production ratios as a function of excitation energy. 123,124,125,126,127,128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,144,145,146,147,148,149,150,151,152,153,154,155,156Pd, 120,121,122,123,124,125,126,127,128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,159Ag, 200,201,202,203,204,205,206,207,208,209,210,211,212,213,214,215,216,217,218,219,220,221,222,223,224,225,226,227,228,229,230,231,232,233,234,235,236,237,238,239,240,241,242,243,244,245,246,247,248,249,250Os, 200,201,202,203,204,205,206,207,208,209,210,211,212,213,214,215,216,217,218,219,220,221,222,223,224,225,226,227,228,229,230,231,232,233,234,235,236,237,238,239,240,241,242,243,244,245,246,247,248,249,250,251,252,253,254,255Ir; calculated β-delayed one neutron branching ratio P1n by pn-RQRPA+HFM, pn-RQRPA, and FRDM+QRPA+HFM methods, and compared with available experimental data. 89Br, 138I; calculated β-delayed neutron spectrum by pn-RQRPA+HFM method, and compared with experimental spectra. 260,261,262,263,264,265,266,267,268,269,270,271,272,273,274,275,276,277,278,279,280,281,282,283,284,285,286,287,288,289,290,291,292,293,294,295,296,297,298,299,300,301,302,303,304,305,306,307,308,309,310,311,312,313,314,315,316,317,318,319,320,321,322,323,324,325,326,327,328,329,330Fm; calculated fission barrier heights for HFB-14, FRDM, ETFSI and SBM models, mean numbers and mean energies of emitted β-delayed neutrons by pn-RQRPA+HFM and pn-RQRPA methods. 63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99Ni, 120,121,122,123,124,125,126,127,128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,159,160,161,161,162,163,164,165,166,167,168,169,170Sn; calculated mean numbers and mean energies of emitted β-delayed neutrons by pn-RQRPA+HFM and pn-RQRPA methods. Z=70-110, N=120-190; calculated β--delayed α branching ratios Pα (%) for FRDM fission barrier data. Fully self-consistent covariant density-functional theory (CDFT), with the ground states of all the nuclei calculated with the relativistic Hartree-Bogoliubov (RHB) model with the D3C* interaction, and relativistic proton-neutron quasiparticle random-phase approximation (pn-RQRPA) for β strength functions, with particle evaporations and fission from highly excited nuclear states estimated by Hauser-Feshbach statistical model (pn-RQRPA+HFM) for four fission barrier height models (ETFSI, FRDM, SBM, HFB-14). Detailed tables of numerical data for β-delayed neutron emission (BDNE), β-delayed fission (BDF) and β-delayed α-particle emission branching ratios are given in the Supplemental Material of the paper.
doi: 10.1103/PhysRevC.104.044321
2021OI01 Eur.Phys.J. A 57, 180 (2021) Discerning nuclear pairing properties from magnetic dipole excitation NUCLEAR STRUCTURE 36,38,40,42,44,46,48,50,52,54Ca; calculated binding energies, magnetic dipole strengths, pairing correation of Cooper pair within the framework of relativistic nuclear energy-density functional (RNEDF).
doi: 10.1140/epja/s10050-021-00488-7
2021RA26 Phys.Rev. C 104, 054318 (2021) A.Ravlic, E.Yuksel, Y.F.Niu, N.Paar Evolution of β-decay half-lives in stellar environments RADIOACTIVITY 52,54,56,58,60Ti, 62,64,66,68,70Fe, 120,122,124,126,128Cd, 130,132,134,136,138Sn(β-); Z=8-82, N=12-184; calculated β-decay half-lives of even-even nuclei as a function of temperature and density, Gamow-Teller strength as a function of temperature. Relativistic nuclear energy density functional framework with D3C* parametrization, and finite-temperature proton-neutron relativistic quasiparticle random-phase approximation (FT-PNRQRPA). Relevance to initial stages of the r-process or other astrophysical processes such as rp-process, dense thermonuclear explosions, and supernovae simulations.
doi: 10.1103/PhysRevC.104.054318
2021RA30 Phys.Rev. C 104, 064302 (2021) A.Ravlic, Y.F.Niu, T.Niksic, N.Paar, P.Ring Finite-temperature linear response theory based on relativistic Hartree Bogoliubov model with point-coupling interaction NUCLEAR STRUCTURE 120Cd; calculated strength functions of 1- and 1+ excitations in β- direction; GT- strength B(GT-) of the 1+ state at 13.54 MeV, GT- strength function with respect to the number of oscillator shells, convergence properties of the GT- strength. 112,116,120,124,128Sn; calculated neutron critical temperature and mean pairing gap at zero temperature. 112,114,116,118,120,122Sn; calculated Jπ=0+ strength functions with respect to the excitation energy of the parent nuclei for temperatures T=0, 0.5, 0.9, and 1.5 MeV. 116,120,124,128,132Sn; calculated Gamow-Teller (Jπ=1+) strength functions with respect to the excitation energy of the parent nuclei for temperatures T=0, 0.5, 0.9, and 1.5 MeV. 112Sn; calculated single-particle energy levels in canonical basis for neutrons and protons at T=0 and 0.9 MeV. 112,120,128Sn; calculated spin-dipole excitation strength at temperature T=0, 0.5, 0.9, and 1.5 MeV, spin-dipole centroid energies of 0-, 1-, and 2- multipoles at temperature T=0 and 1.5 MeV. Finite-temperature linear response theory based on finite-temperature relativistic Hartree-Bogoliubov (FT-RHB) model for calculation of IAR, GTR, and spin-dipole resonance (SDR) in tin isotopes at finite-temperatures, with point-coupling relativistic energy-density functionals (EDFs): DD-PC1 and DDPCX for the calculation of mean-field potential in the ground state and the residual ph interaction in finite temperature quasiparticle random-phase approximation (FT-QRPA) approach, based on Bardeen-Cooper-Schrieffer (BCS) basis. Comparison with available experimental data.
doi: 10.1103/PhysRevC.104.064302
2021VA06 Phys.Rev. C 103, 064307 (2021) Nuclear charge-exchange excitations based on a relativistic density-dependent point-coupling model NUCLEAR STRUCTURE 48Ca, 90Zr, 112,116,122,130Sn, 208Pb; calculated isobaric analog resonance (IAR) transition strength distributions, B(GT)-, B(GT)+ strength distributions, sum rule, Gamow-Teller resonances. 104,106,108,110,112,114,116,118,120,122,124,126,128,130,132Sn; calculated isobaric analog resonance excitation energies, excitation energy for GT- direct spin-flip transitions. Proton-neutron relativistic quasiparticle random phase approximation and relativistic Hartree-Bogoliubov model (RHB+PN-RQRPA) based relativistic density-dependent point coupling model with DD-PCX, DD-PC1, and DD-ME2 functionals. Comparison with experimental data. Relevance to future large-scale calculations of charge-exchange excitations and weak interaction processes in stellar environments.
doi: 10.1103/PhysRevC.103.064307
2020BA50 Phys.Lett. B 810, 135804 (2020) S.Bassauer, P.von Neumann-Cosel, P.-G.Reinhard, A.Tamii, S.Adachi, C.A.Bertulani, P.Y.Chan, G.Colo, A.D'Alessio, H.Fujioka, H.Fujita, Y.Fujita, G.Gey, M.Hilcker, T.H.Hoang, A.Inoue, J.Isaak, C.Iwamoto, T.Klaus, N.Kobayashi, Y.Maeda, M.Matsuda, N.Nakatsuka, S.Noji, H.J.Ong, I.Ou, N.Paar, N.Pietralla, V.Yu.Ponomarev, M.S.Reen, A.Richter, X.Roca-Maza, M.Singer, G.Steinhilber, T.Sudo, Y.Togano, M.Tsumura, Y.Watanabe, V.Werner Evolution of the dipole polarizability in the stable tin isotope chain NUCLEAR REACTIONS 112,114,116,118,120,124Sn(p, p'), E=295 MeV; 116Sn(γ, X), E<30 MeV; measured reaction products, Ep, Ip; deduced σ(θ, E), σ, total dipole polarizability. Comparison with available data.
doi: 10.1016/j.physletb.2020.135804
2020KR13 Phys.Rev. C 102, 044315 (2020) G.Kruzic, T.Oishi, D.Vale, N.Paar Magnetic dipole excitations based on the relativistic nuclear energy density functional NUCLEAR STRUCTURE 18O, 42,48Ca, 50Ti, 208Pb; calculated M1 strength distributions, B(M1), neutron and proton contributions to the M1 transition strengths; compiled experimental M1 excitation energies and B(M1) values. Relativistic Hartree-Bogoliubov (RHB) model, and relativistic nuclear energy density functional formalism using relativistic quasiparticle random phase approximation (RQRPA) with density-dependent point coupling interaction DD-PC1.
doi: 10.1103/PhysRevC.102.044315
2020OI01 J.Phys.(London) G47, 115106 (2020) Role of residual interaction in the relativistic description of M1 excitation NUCLEAR STRUCTURE 36,38,40,42,44,46,48,50,52,54,56,58,60,62,64Ca; analyzed available data; calculated summations of the M1-excitation strength of Ca isotopes, M1-excitation energies.
doi: 10.1088/1361-6471/abaeb1
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
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
2019OI01 Phys.Rev. C 100, 024308 (2019) Magnetic dipole excitation and its sum rule in nuclei with two valence nucleons NUCLEAR STRUCTURE 18O, 18Ne, 42Ca; calculated energies of ground states and 1+ levels, discrete M1 transition strengths, M1 sum rule. 17O; calculated single-neutron energies. Three-body model for systems with two-valence nucleons, with no pairing, density-dependent contact (DDC) pairing and Minnesota pairing. Comparison with available experimental data.
doi: 10.1103/PhysRevC.100.024308
2019PE18 J.Phys.(London) G46, 085103 (2019) J.Petkovic, T.Marketin, G.Martinez-Pinedo, N.Paar Self-consistent calculation of the reactor antineutrino spectra including forbidden transitions NUCLEAR REACTIONS 235,238U, 239,241Pu(n, F)ν-bar/E, E thermal; calculated electron and antineutrino spectra.
doi: 10.1088/1361-6471/ab28f5
2019YU02 Phys.Rev. C 99, 034318 (2019) Optimizing the relativistic energy density functional with nuclear ground state and collective excitation properties NUCLEAR STRUCTURE 36,38,40,42,44,46,48,50,52,54,56Ca, 54,56,58,60,62,64,66,68,70,72Ni, 100,102,104,106,108,110,112,114,116,118,120,122,124,126,128,130,132,134Sn, 190,192,194,196,198,200,202,204,206,208,210,212,214Pb, 90Zr; calculated binding energies using DD-PCX, DD-PC1, and DD-ME2 interactions, charge radii. 90Zr, 120Sn, 208Pb; calculated isoscalar GMR energies. 48Ca, 68Ni, 208Pb, 112,116,118,120,122,124Sn; calculated dipole polarizabilities using RHB+(Q)RPA with DD-PCX, DD-PC1, and DD-ME2 interactions. 208Pb; calculated neutron skin thickness. Relativistic energy density functional with DD-PCX interaction, based on the RHB plus (Q)RPA, supplemented with the covariance analysis. Comparison with experimental data.
doi: 10.1103/PhysRevC.99.034318
2018RO12 Prog.Part.Nucl.Phys. 101, 96 (2018) Nuclear equation of state from ground and collective excited state properties of nuclei
doi: 10.1016/j.ppnp.2018.04.001
2017MA16 Acta Phys.Pol. B48, 641 (2017) T.Marketin, A.Sieverding, M.-R.Wu, N.Paar, G.Martinez-Pinedo Microscopic Calculations of β-decay Rates for r-process COMPILATION Z=8-110; compiled contribution of first-forbidden β-decay of neutron-rich nuclei to their total β-decay rate, T1/2 RADIOACTIVITY Z=8-110(β-), (β+); calculated T1/2, β-delayed neutron multiplicity using relativistic Hartree-Bogoliubov model with spherical symmetry and D3C parameter set; deduced ratio calculated to experimental T1/2 vs experimental T1/2.
doi: 10.5506/APhysPolB.48.641
2016KR04 Phys.Rev. C 93, 044330 (2016) M.Krzysiek, M.Kmiecik, A.Maj, P.Bednarczyk, A.Bracco, F.C.L.Crespi, E.G.Lanza, E.Litvinova, N.Paar, R.Avigo, D.Bazzacco, G.Benzoni, B.Birkenbach, N.Blasi, S.Bottoni, S.Brambilla, F.Camera, S.Ceruti, M.Ciemala, G.de Angelis, P.Desesquelles, J.Eberth, E.Farnea, A.Gadea, A.Giaz, A.Gorgen, A.Gottardo, J.Grebosz, H.Hess, R.Isocarte, A.Jungclaus, S.Leoni, J.Ljungvall, S.Lunardi, K.Mazurek, R.Menegazzo, D.Mengoni, C.Michelagnoli, B.Milion, A.I.Morales, D.R.Napoli, R.Nicolini, L.Pellegri, A.Pullia, B.Quintana, F.Recchia, P.Reiter, D.Rosso, M.D.Salsac, B.Siebeck, S.Siem, P.-A.Soderstrom, C.Ur, J.J.Valiente-Dobon, O.Wieland, M.Zieblinski Pygmy dipole resonance in 140Ce via inelastic scattering of 17O NUCLEAR REACTIONS 140Ce(17O, 17O'), E=340 MeV; measured scattered 17O particle spectra, Eγ, Iγ, (17O)γ-coin, σ as function of excitation energy in 140Ce, γ(θ) using AGATA-demonstrator array for γ rays and E-ΔE detectors for particles at LNL's PIAVE-ALPI accelerator facility. DWBA analysis for the pygmy dipole states using microscopically calculated form factors based on transition densities from RQRPA and optical potentials. 140Ce; deduced levels, J, π, 1- pygmy (PDR) states, isoscalar energy-weighted sum rule (ISEWSR), PDR strengths, isospin character of the dipole states. Comparison with experimental results from (γ, γ') and (α, α') studies.
doi: 10.1103/PhysRevC.93.044330
2016MO20 Phys.Rev. C 93, 064303 (2016) C.Mondal, B.K.Agrawal, M.Centelles, G.Colo, X.Roca-Maza, N.Paar, X.Vinas, S.K.Singh, S.K.Patra Model dependence of the neutron-skin thickness on the symmetry energy NUCLEAR STRUCTURE 132Sn, 208Pb; calculated symmetry-energy coefficient and symmetry-energy slope parameter as a function of neutron-skin thickness using several microscopic mean-field models.
doi: 10.1103/PhysRevC.93.064303
2015CO05 Acta Phys.Pol. B46, 395 (2015) The Nuclear Symmetry Energy and Other Isovector Observables from the Point of View of Nuclear Structure NUCLEAR STRUCTURE 208Pb; analyzed available data; deduced the values of the Pearson-product correlation coefficient, covariance analysis.
doi: 10.5506/APhysPolB.46.395
2015PA15 Acta Phys.Pol. B46, 369 (2015) N.Paar, Ch.C.Moustakidis, G.A.Lalazissis, T.Marketin, D.Vretenar Nuclear Energy Density Functionals and Neutron Star Properties NUCLEAR STRUCTURE 68Ni, 130,132Sn, 208Pb; calculated constraints of the symmetry energy, dipole polarizability, liquid-to-solid transition pressure.
doi: 10.5506/APhysPolB.46.369
2015PA42 Int.J.Mod.Phys. E24, 1541004 (2015) N.Paar, T.Marketin, D.Vale, D.Vretenar Modeling nuclear weak-interaction processes with relativistic energy density functionals NUCLEAR STRUCTURE 56Fe, 18,20,22O, 42Ca; calculated Gamow-Teller transition strength distribution, contributions of the multipole transitions to the inclusive σ. Comparison with available data.
doi: 10.1142/S0218301315410049
2015RO04 J.Phys.(London) G42, 034033 (2015) Covariance analysis for energy density functionals and instabilities
doi: 10.1088/0954-3899/42/3/034033
2015RO26 Phys.Rev. C 92, 064304 (2015) X.Roca-Maza, X.Vinas, M.Centelles, B.K.Agrawal, G.Colo, N.Paar, J.Piekarewicz, D.Vretenar Neutron skin thickness from the measured electric dipole polarizability in 68Ni, 120Sn, and 208Pb NUCLEAR STRUCTURE 68Ni, 120Sn, 208Pb; calculated dipole polarizability, and dipole polarizability times the symmetry energy as a function of the neutron skin thickness using self-consistent random-phase approximation (QRPA) with a large set of energy density functionals (EDFs), and comparison to experimental data; deduced symmetry energy αD and its density dependence. 48Ca, 90Zr; deduced neutron skin thickness and electric dipole polarizability.
doi: 10.1103/PhysRevC.92.064304
2014PA32 Phys.Rev. C 90, 011304 (2014) N.Paar, Ch.C.Moustakidis, T.Marketin, D.Vretenar, G.A.Lalazissis Neutron star structure and collective excitations of finite nuclei NUCLEAR STRUCTURE 68Ni, 130,132Sn, 208Pb; calculated excitation energies of the isoscalar giant monopole and quadrupole resonances (ISGMR, ISGQR), isovector giant dipole resonance (IVGDR), and anti-analog giant dipole resonance (AGDR), energy-weighted pygmy dipole (PDR) strength, and dipole polarizability. Covariance analysis of based on relativistic nuclear energy density functional (RNEDF). Neutron star crust properties by using collective excitations in finite nuclei. Thermodynamic method using relativistic nuclear energy density functionals, and quasiparticle random-phase approximation (QRPA).
doi: 10.1103/PhysRevC.90.011304
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
2013KR01 Acta Phys.Pol. B44, 559 (2013) A.Krasznahorkay, M.Csatlos, L.Stuhl, A.Algora, J.Gulyas, J.Timar, N.Paar, D.Vretenar, M.N.Harakeh A New Method for Measuring Neutron-skin Thickness in Rare Isotope Beams NUCLEAR REACTIONS C, 1H(124Sn, n), E=600 MeV/nucleon; measured reaction products, En, In, Eγ, Iγ. 124Sn; deduced yields, neutron skin thickness, proton and neutron radii. Isobaric analog states, comparison with calculations.
doi: 10.5506/APhysPolB.44.559
2013KR08 Phys.Scr. T154, 014018 (2013) A.Krasznahorkay, N.Paar, D.Vretenar, M.N.Harakeh Neutron-skin thickness of 208Pb from the energy of the anti-analogue giant dipole resonance NUCLEAR STRUCTURE 208Pb; calculated energy of the charge-exchange anti-analogue giant dipole resonance (AGDR), neutron skin thickness. Fully self-consistent relativistic proton-neutron quasiparticle random-phase approximation based on the relativistic Hartree-Bogoliubov model.
doi: 10.1088/0031-8949/2013/T154/014018
2013NI16 Phys.Rev. C 88, 034308 (2013) Y.F.Niu, Z.M.Niu, N.Paar, D.Vretenar, G.H.Wang, J.S.Bai, J.Meng Pairing transitions in finite-temperature relativistic Hartree-Bogoliubov theory NUCLEAR STRUCTURE 124Sn; calculated binding energy/nucleon, entropy, neutron radius, charge radius, neutron pairing energy, neutron pairing gap, specific heat and contour plot for the neutron pairing gap as function of temperature. 36,38,40,42,44,46,48,50,52,54,56,58,60,62Ca, 54,56,58,60,62,64,66,68,70,72,74,76,78,80,82,84,86,88,90,92Ni, 102,104,106,108,110,112,114,116,118,120,122,124,126,128,130,132,134,136,138,140,142,144,146,148,150,152,154,156,158,160,162,164,166,168,170Sn, 182,184,186,188,190,192,194,196,198,200,202,204,206,208,210,212,214,216,218,220,222,224,226,228,230,232,234,236,238,240,242,244,246,248,250,252,254,256,258,260,262,264Pb; calculated neutron pairing gap as a function of temperature, neutron pairing gaps at zero temperature and critical temperatures for pairing transition. Finite temperature relativistic Hartree-Bogoliubov (FTRHB) theory based on point-coupling functional PC-PK1 with Gogny or separable pairing forces.
doi: 10.1103/PhysRevC.88.034308
2013PA06 Phys.Rev. C 87, 025801 (2013) N.Paar, H.Tutman, T.Marketin, T.Fischer Large-scale calculations of supernova neutrino-induced reactions in Z=8-82 target nuclei NUCLEAR REACTIONS 12C, 56Fe, Ni, Sn, Pb(ν, e-), E<100 MeV; calculated inclusive neutrino-nucleus cross sections for supernova neutrino-induced reactions on targets of Z=8-82, N=8-182. Self-consistent theory framework based on relativistic nuclear energy density functional. Comparison with experimental data. Relevance to element abundance patterns.
doi: 10.1103/PhysRevC.87.025801
2013RE12 Phys.Rev. C 88, 034325 (2013) P.-G.Reinhard, J.Piekarewicz, W.Nazarewicz, B.K.Agrawal, N.Paar, X.Roca-Maza Information content of the weak-charge form factor NUCLEAR STRUCTURE 48Ca, 132Sn, 208Pb; calculated neutron rms radius, neutron skin, weak charge form factor, electric dipole polarizability. Statistical covariance analysis. Impact of proposed PREX-II and CREX measurements on constraining the isovector sector of the nuclear EDF. Nuclear density functional theory with nonrelativistic Skyrme-Hartree-Fock (SHF), relativistic mean-field (RMF), and relativistic density dependent meson-nucleon couplings (DDME) models.
doi: 10.1103/PhysRevC.88.034325
2013RO08 Phys.Rev. C 87, 034301 (2013) X.Roca-Maza, M.Brenna, B.K.Agrawal, P.F.Bortignon, G.Colo, L.-G.Cao, N.Paar, D.Vretenar Giant quadrupole resonances in 208Pb, the nuclear symmetry energy, and the neutron skin thickness NUCLEAR STRUCTURE 208Pb; calculated strength functions, neutron and proton transition densities, excitation energies of isoscalar and isovector giant quadrupole resonance (ISGQR and IVGQR), neutron skin thickness, symmetry energy. Macroscopic approach based on quantal harmonic oscillator model, and microscopic approach based on nonrelativistic and covariant energy density functionals (EDF) within the RPA. Comparison with experimental data.
doi: 10.1103/PhysRevC.87.034301
2013RO20 Phys.Rev. C 88, 024316 (2013) X.Roca-Maza, M.Brenna, G.Colo, M.Centelles, X.Vinas, B.K.Agrawal, N.Paar, D.Vretenar, J.Piekarewicz Electric dipole polarizability in 208Pb: Insights from the droplet model NUCLEAR STRUCTURE 208Pb; calculated electric dipole polarizability αD as function of neutron skin thickness, correlation between αD and symmetry energy, parity-violating asymmetry as function of αD. Droplet model. Large set of relativistic and nonrelativistic nuclear mean-field models with modern nuclear energy density functionals (EDF). Comparison with experimental data.
doi: 10.1103/PhysRevC.88.024316
2012DA12 Phys.Rev. C 86, 035804 (2012) Neutral-current neutrino-nucleus cross sections based on relativistic nuclear energy density functional NUCLEAR REACTIONS 12C, 40Ar, 56Fe, 56Ni, 92,94,96,98,100Mo(ν, ν'), E=0-100 MeV; calculated neutral current σ, and averaged σ over distribution of supernova neutrinos based on relativistic nuclear energy density functional and weak neutral-current model. The cross sections calculated by using weak interaction Hamiltonian and nuclear properties of initial and excited states from RHB+RQRPA methods.
doi: 10.1103/PhysRevC.86.035804
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
2012MA16 Phys.Rev. C 85, 054313 (2012) T.Marketin, G.Martinez-Pinedo, N.Paar, D.Vretenar Role of momentum transfer in the quenching of Gamow-Teller strength NUCLEAR REACTIONS 90Zr(p, n), (n, p), E=300 MeV; analyzed differential cross section data; deduced pn-RQRPA strengths in β- and β+ channels obtained with the Gamow-Teller (GT) operator, GT+IVSM operator, and full L=0 operator, momentum transfer. Relativistic Hartree-Bogoliubov model. Comparison with Ikeda sum rule. NUCLEAR STRUCTURE 48Ca, 90Zr, 100,102,104,106,108,110,112,114,116,118,120,122,124,126,128,130,132,134,136,138,140,142,144,146,148,150Sn, 208Pb; analyzed L=0 β- strength functions, GT and IVSM centroids using Relativistic Hartree-Bogoliubov (RHB) plus proton-neutron relativistic quasiparticle random-phase approximation (pn-RQRPA) with GT operator, the GT plus isovector spin monopole (IVSM) mode term, and the operator that contains the full momentum-transfer dependence.
doi: 10.1103/PhysRevC.85.054313
2012PA27 J.Phys.:Conf.Ser. 337, 012013 (2012) N.Paar, D.Vretenar, Y.F.Niu, J.Meng Self-consistent theory of stellar electron capture rates
doi: 10.1088/1742-6596/337/1/012013
2012PI06 Phys.Rev. C 85, 041302 (2012) J.Piekarewicz, B.K.Agrawal, G.Colo, W.Nazarewicz, N.Paar, P.-G.Reinhard, X.Roca-Maza, D.Vretenar Electric dipole polarizability and the neutron skin NUCLEAR STRUCTURE 208Pb, 132Sn, 48Ca; analyzed correlation between neutron-skin thickness and electric dipole polarizability using ensemble of 48 nuclear energy density functionals. NL3/FSU, DD-ME, and Skyrme-SV models. Comparison with experimental data.
doi: 10.1103/PhysRevC.85.041302
2012VR01 Phys.Rev. C 85, 044317 (2012) D.Vretenar, Y.F.Niu, N.Paar, J.Meng Low-energy isovector and isoscalar dipole response in neutron-rich nuclei NUCLEAR STRUCTURE 68Ni, 132Sn, 208Pb; calculated isovector and isoscalar E1 strength distributions, electric dipole polarizability, moments of isoscalar and isovector dipole strength distributions, partial neutron and proton contributions to reduced amplitudes of pygmy dipole states (PDS) and to isovector giant-dipole resonance (GDR), EWSR. Fully self-consistent random-phase approximation based on relativistic energy density functionals.
doi: 10.1103/PhysRevC.85.044317
2011KH10 Phys.Rev. C 84, 051301 (2011) 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
2011NI09 Phys.Rev. C 83, 045807 (2011) Y.F.Niu, N.Paar, D.Vretenar, J.Meng Stellar electron-capture rates calculated with the finite-temperature relativistic random-phase approximation NUCLEAR REACTIONS 54,56Fe, 76,78Ge(e, ν), E=0-30 MeV; calculated B(GT) strength distributions, electron-capture rates and cross sections in stellar environments. Finite-temperature relativistic mean-field model with charge-exchange transitions described by the self-consistent finite-temperature relativistic random-phase approximation. Comparison with predictions of similar and complementary model calculations.
doi: 10.1103/PhysRevC.83.045807
2011NI21 J.Phys.:Conf.Ser. 312, 042017 (2011) Y.F.Niu, N.Paar, D.Vretenar, J.Meng Finite temperature effects on monopole and dipole excitations NUCLEAR STRUCTURE 60Ni, 132Sn; calculated resonance dipole (Ni), monopole (Sn) transition strength distributions, single particle spectra using FTRRPA (finite temperature relativistic RPA).
doi: 10.1088/1742-6596/312/4/042017
2011PA29 Phys.Rev. C 84, 047305 (2011) N.Paar, T.Suzuki, M.Honma, T.Marketin, D.Vretenar Uncertainties in modeling low-energy neutrino-induced reactions on iron-group nuclei NUCLEAR REACTIONS 54,56Fe, 58,60Ni(ν, X), E=40, 60, 80 MeV; calculated Gamow-Teller transition strengths B(GT), cross sections. Cross sections averaged over Michel flux and Fermi-Dirac distribution. Relativistic and Skyrme energy-density functionals and the shell model approach. Comparison with experimental data for 56Fe(ν, e)56Co.
doi: 10.1103/PhysRevC.84.047305
2011SA04 Phys.Rev. C 83, 024303 (2011) A.R.Samana, F.Krmpotic, N.Paar, C.A.Bertulani Neutrino and antineutrino charge-exchange reactions on 12C NUCLEAR STRUCTURE 12B, 12N; calculated ground state energies, GT-B values, weak-interaction properties of ground states. QRPA and Projected quasiparticle random phase approximation (QRPA). NUCLEAR REACTIONS 12C(ν, e-)12N, E=0-600 MeV; 12C(ν-bar, e+)12B, E=0-600 MeV; calculated exclusive and inclusive cross sections, sum rule, muon capture transition rates. Astrophysical significance to supernova neutrino spectra. QRPA and PQRPA models. Comparison with experimental data.
doi: 10.1103/PhysRevC.83.024303
2009KL02 Acta Phys.Pol. B40, 589 (2009) A.Klimkiewicz, N.Paar, P.Adrich, M.Fallot, K.Boretzky, T.Aumann, D.Cortina-Gil, U.Datta Pramanik, Th.W.Elze, H.Emling, H.Geissel, M.Hellstrom, K.L.Jones, J.V.Kratz, R.Kulessa, C.Nociforo, R.Palit, H.Simon, G.Surowka, K.Summerer, D.Vretenar, W.Walus Collective Dipole Excitations in Neutron-Rich Nuclei from 132Sn Mass Region, the Nuclear Symmetry Energy and Neutron Skins NUCLEAR REACTIONS Pb(130Sn, 130Sn'), (132Sn, 132Sn'), E not given;measured dipole strength distributions following projectile Coulomb excitation;deduced symmetry energy pressure, neutron skin thickness, pygmy strength. Comparison with calculations.
2009MA20 Phys.Rev. C 79, 054323 (2009) T.Marketin, N.Paar, T.Niksic, D.Vretenar Relativistic quasiparticle random-phase approximation calculation of total muon capture rates NUCLEAR STRUCTURE Z=6-96, A=12-244; calculated muon transition energies and muon capture rates using relativistic proton-neutron quasiparticle random phase approximation. Relativistic Hartree-Bogoliubov model. Comparison with experimental data.
doi: 10.1103/PhysRevC.79.054323
2009PA26 Phys.Rev.Lett. 103, 032502 (2009) N.Paar, Y.F.Niu, D.Vretenar, J.Meng Isoscalar and Isovector Splitting of Pygmy Dipole Structures NUCLEAR STRUCTURE 140Ce; calculated E1 transition strength; deduced low-energy strength structure based on isospin. QRPA, comparison with experiment.
doi: 10.1103/PhysRevLett.103.032502
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
2008PA05 Phys.Rev. C 77, 024608 (2008) N.Paar, D.Vretenar, T.Marketin, P.Ring Inclusive charged-current neutrino-nucleus reactions calculated with the relativistic quasiparticle random-phase approximation NUCLEAR REACTIONS 12C, 16O, 56Fe, 208Pb(ν, e-), E=0-100 MeV; calculated neutron-nucleus cross sections.
doi: 10.1103/PhysRevC.77.024608
2008PA06 J.Phys.(London) G35, 014058 (2008) Neutrino-nucleus reactions with the relativistic quasiparticle RPA NUCLEAR REACTIONS 12C(ν, e-), (ν, μ-), E not given; 16O(ν, e-), E not given; 208Pb(ν, e-), E < 50 MeV; calculated cross sections; 56Fe(ν, e-), E < 60 MeV; calculated cross sections, contribution of multipole transitions. Comparisons with data.
doi: 10.1088/0954-3899/35/1/014058
2008PA30 Phys.Rev. C 78, 039801 (2008) Comment on "Pygmy dipole response of proton-rich argon nuclei in random-phase approximation and no-core shell model"
doi: 10.1103/PhysRevC.78.039801
2008VR01 J.Phys.(London) G35, 014039 (2008) D.Vretenar, N.Paar, T.Marketin, P.Ring Relativistic QRPA description of nuclear excitations NUCLEAR STRUCTURE 32Ar, Ar, 132Sn; calculated dipole strength distributions using the RRPA formalism. 108,110,112,114,116,118,120,122,124,126,128,130,132Sn; calculated energy spacings between GT resonances and the respective isobaric analog states using the RQRPA formalism. Comparison with data. RADIOACTIVITY Fe, Ni, Zn(β-); calculated T1/2 using the RQRPA formalism. Comparison with data.
doi: 10.1088/0954-3899/35/1/014039
2007KL06 Phys.Rev. C 76, 051603 (2007) A.Klimkiewicz, N.Paar, P.Adrich, M.Fallot, K.Boretzky, T.Aumann, D.Cortina-Gil, U.Datta Pramanik, Th.W.Elze, H.Emling, H.Geissel, M.Hellstrom, K.L.Jones, J.V.Kratz, R.Kulessa, C.Nociforo, R.Palit, H.Simon, G.Surowka, K.Summerer, D.Vretenar, W.Walus, for the LAND Collaboration Nuclear symmetry energy and neutron skins derived from pygmy dipole resonances NUCLEAR REACTIONS Be(238U, X)129Sn/130Sn/131Sn/132Sn/133Sb/134Sb, E=500 MeV/nucleon; measured pygmy dipole resonance strength, neutron skin thickness, symmetry parameters; deduced neutron separation energy, B(E1) using RQRPA approach. Compared to 116Sn, 140Ce, 142Nd, 144Sm, 208Pb.
doi: 10.1103/PhysRevC.76.051603
2007PA08 Phys.Rev. C 75, 014310 (2007) P.Papakonstantinou, R.Roth, N.Paar Nuclear collective excitations using correlated realistic interactions: The role of explicit random-phase approximation correlations NUCLEAR STRUCTURE 16O, 40Ca, 90Zr, 100Sn, 208Pb; calculated giant resonance energies, strength distributions.
doi: 10.1103/PhysRevC.75.014310
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
2007RI14 Nucl.Phys. A788, 194c (2007) P.Ring, E.Litvinova, T.Niksic, N.Paar, D.Pena Arteaga, V.I.Tselyaev, D.Vretenar Dynamics of Exotic Nuclear Systems: Covariant QRPA and Extensions NUCLEAR STRUCTURE 20,26Ne, 132Sn, 208Pb; calculated isoscalar monopole, isovector E1, M1 resonance strength functions and neutron single-particle states using covariant density functional theory including particle vibration coupling.
doi: 10.1016/j.nuclphysa.2007.01.082
2007RO22 Nucl.Phys. A788, 12c (2007) R.Roth, H.Hergert, N.Paar, P.Papakonstantinou Nuclear Structure in the UCOM Framework: From Realistic Interactions to Collective Excitations NUCLEAR STRUCTURE 4He, 16,24O, 34Si, 40,48Ca, 48,56,78Ni, 88Sr, 90Zr, 100,114,132Sn, 146Gd, 208Pb; calculated ground-state energies. 40Ca, 90Zr, 208Pb; calculated giant resonance strength distributions. Unitary correlation operator method, no-core shell model, Hartree-Fock, RPA, many-body perturbation theory. Comparison with data.
doi: 10.1016/j.nuclphysa.2007.01.008
2007VR01 Eur.Phys.J. Special Topics 150, 193 (2007) D.Vretenar, T.Niksic, N.Paar, P.Ring Exotic nuclear structure: Relativistic mean-field and beyond NUCLEAR STRUCTURE 32Ar, 132Sn; calculated isovector dipole strength distributions.
doi: 10.1140/epjst/e2007-00302-9
2006PA11 Int.J.Mod.Phys. E15, 346 (2006) N.Paar, P.Papakonstantinou, R.Roth, H.Hergert Self-consistent description of collective excitations in the unitary correlation operator method NUCLEAR STRUCTURE 16O, 40,48Ca, 90Zr, 132Sn, 208Pb; calculated giant resonance strength distributions. Unitary correlation operator method, RPA.
doi: 10.1142/S0218301306004193
2006PA24 Phys.Rev. C 74, 014318 (2006) N.Paar, P.Papakonstantinou, H.Hergert, R.Roth Collective multipole excitations based on correlated realistic nucleon-nucleon interactions NUCLEAR STRUCTURE 16O, 40Ca; calculated single-particle level energies. 16O, 40,48Ca, 90Zr, 132Sn, 208Pb; calculated transition strength distributions, giant resonance features. Unitary correlation operator method.
doi: 10.1103/PhysRevC.74.014318
2006PA30 Phys.Atomic Nuclei 69, 1345 (2006) N.Paar, P.Papakonstantinou, H.Hergert, R.Roth Collective Excitations in the Unitary Correlation Operator Method and Relativistic QRPA Studies of Exotic Nuclei NUCLEAR STRUCTURE 40Ca; calculated single-particle level energies. 4He, 16,24O, 34Si, 40,48Ca, 48,56,68,78Ni, 88Sr, 90Zr, 100,114,132Sn, 146Gd, 208Pb; calculated binding energies. 16O, 40,48Ca, 42Ti, 44Cr, 46Fe, 90Zr, 132Sn, 208Pb; calculated transition strength distributions. Self-consistent RPA approach, unitary correlation operator method.
doi: 10.1134/S1063778806080114
2006PA31 Phys.Rev. C 74, 037303 (2006) N.Paar, D.Vretenar, T.Niksic, P.Ring Relativistic quasiparticle random-phase approximation description of isoscalar compression modes in open-shell nuclei in the A ≈ 60 mass region NUCLEAR STRUCTURE 56Fe, 58,60Ni; calculated isoscalar monopole and dipole strength distributions. Relativistic quasiparticle RPA.
doi: 10.1103/PhysRevC.74.037303
2006RO15 Phys.Rev. C 73, 044312 (2006) R.Roth, P.Papakonstantinou, N.Paar, H.Hergert, T.Neff, H.Feldmeier Hartree-Fock and many body perturbation theory with correlated realistic NN interactions NUCLEAR STRUCTURE 4He, 16,24O, 34Si, 40,48Ca, 48,56,78Ni, 88Sr, 90Zr, 100,114,132Sn, 146Gd, 208Pb; calculated ground-state energies, radii. 16O, 40Ca, 100,132Sn, 208Pb; calculated single-particle energies. O, Ca, Ni, Sn; calculated ground-state energies for even-A isotopes. Correlated realistic nucleon-nucleon interactions.
doi: 10.1103/PhysRevC.73.044312
2005NI02 Phys.Rev. C 71, 014308 (2005) T.Niksic, T.Marketin, D.Vretenar, N.Paar, P.Ring β-decay rates of r-process nuclei in the relativistic quasiparticle random phase approximation NUCLEAR STRUCTURE 69,71,73,75,77,79Cu, 78Ni, 132Sn; calculated neutron and proton single-particle energy levels. Relativistic quasiparticle RPA. RADIOACTIVITY 64,66,68,70,74,76Fe, 70,72,74,76,78Ni, 76,78,80,82Zn, 82Ge, 72Ti, 74Cr, 122,124,126,128,130,132Cd, 134,136,138,140,142Sn, 136,138,140,142,144,146Te(β-); calculated T1/2. Relativistic quasiparticle RPA, comparisons with data.
doi: 10.1103/PhysRevC.71.014308
2005PA09 Phys.Lett. B 606, 288 (2005) N.Paar, T.Niksic, D.Vretenar, P.Ring Isotopic dependence of the pygmy dipole resonance NUCLEAR STRUCTURE Ni, Sn, Pb; calculated pygmy dipole resonance excitation energies. Relativistic quasiparticle RPA, comparison with data.
doi: 10.1016/j.physletb.2004.12.011
2005PA20 Int.J.Mod.Phys. E14, 29 (2005) N.Paar, T.Niksic, D.Vretenar, P.Ring Relativistic description of exotic collective excitation phenomena in atomic nuclei NUCLEAR STRUCTURE 22O, 132Sn; calculated isovector dipole strength distribution. 114,116,118,120,122,124,126,128,130,132,134,136,138,140Sn; calculated pygmy dipole resonance energies. 18,20,22,24O; calculated energy levels, B(E2). Relativistic quasiparticle RPA, comparisons with data.
doi: 10.1142/S0218301305002746
2005PA26 Phys.Rev.Lett. 94, 182501 (2005) Proton Electric Pygmy Dipole Resonance NUCLEAR STRUCTURE 40Ca, 42Ti, 44Cr, 46Fe, 32Ar; calculated electric dipole strength distributions, pygmy resonance features. 28,30,32,34,36Ar; calculated pygmy resonance centroid energies, integrated B(E1). Self-consistent relativistic Hartree-Bogoliubov model, relativistic quasiparticle RPA.
doi: 10.1103/PhysRevLett.94.182501
2005PA54 Phys.Lett. B 624, 195 (2005) N.Paar, P.Papakonstantinou, V.Yu.Ponomarev, J.Wambach Low-energy dipole excitations towards the proton drip-line: Doubly magic 48Ni NUCLEAR STRUCTURE 48,56Ni; calculated dipole strength distributions, transition densities. Dirac-Hartree with self consistent relativistic RPA model, Skyrme-Hartree-Fock with continuum RPA model.
doi: 10.1016/j.physletb.2005.08.043
2005PA71 Eur.Phys.J. A 25, Supplement 1, 531 (2005) N.Paar, T.Niksic, T.Marketin, D.Vretenar, P.Ring Self-consistent relativistic QRPA studies of soft modes and spin-isospin resonances in unstable nuclei NUCLEAR STRUCTURE 112,114,116,118,120,122,124Sn, 200,202,204,206,208,210,212,214Pb; calculated resonance energies. 122Zr, 124Mo, 126Ru, 128Pd, 130Cd, 134,136,138,140,142Sn, 136,138,140,142,144,146Te; calculated T1/2. Self-consistent relativistic quasiparticle RPA, relativistic Hartree-Bogoliubov model.
doi: 10.1140/epjad/i2005-06-057-5
2004PA15 Phys.Rev. C 69, 054303 (2004) N.Paar, T.Niksic, D.Vretenar, P.Ring Quasiparticle random phase approximation based on the relativistic Hartree-Bogoliubov model. II. Nuclear spin and isospin excitations NUCLEAR STRUCTURE 48Ca, 90Zr, 208Pb, 108,110,112,114,116,118,120,122,124,126,128,130,132Sn; calculated IAR and Gamow-Teller strength distributions, related features. Proton-neutron relativistic quasiparticle RPA.
doi: 10.1103/PhysRevC.69.054303
2004VR01 Nucl.Phys. A731, 281 (2004) D.Vretenar, T.Niksic, N.Paar, P.Ring Relativistic QRPA description of low-lying dipole strength in neutron-rich nuclei NUCLEAR STRUCTURE 22O, 104,108,112,116,120,124,128,132Sn, 208Pb; calculated isovector response functions. Relativistic quasiparticle RPA.
doi: 10.1016/j.nuclphysa.2003.11.039
2004VR02 Eur.Phys.J. A 20, 75 (2004) D.Vretenar, T.Niksic, P.Ring, N.Paar, G.A.Lalazissis, P.Finelli Relativistic Hartree-Bogoliubov and QRPA description of exotic nuclear structure NUCLEAR STRUCTURE 22O; calculated dipole and quadrupole strength distributions.pairing contributions.
doi: 10.1140/epja/i2002-10325-0
2003PA08 Phys.Rev. C 67, 034312 (2003) N.Paar, P.Ring, T.Niksic, D.Vretenar Quasiparticle random phase approximation based on the relativistic Hartree-Bogoliubov model NUCLEAR STRUCTURE 22O, 104,108,112,116,120,124,128,132Sn, 134Te, 136Xe, 138Ba, 140Ce, 142Nd, 144Sm, 146Gd; calculated dipole and quadrupole strength distributions, transition densities. Relativistic Hartree-Bogoliubov plus relativistic quasiparticle RPA approach.
doi: 10.1103/PhysRevC.67.034312
2003RI09 Nucl.Phys. A722, 372c (2003) P.Ring, N.Paar, T.Niksic, D.Vretenar Collective excitations far from the valley of stability NUCLEAR STRUCTURE 22O; calculated dipole, quadrupole strength distributions. Relativistic quasiparticle RPA.
doi: 10.1016/S0375-9474(03)01392-7
2003VR02 Phys.Rev.Lett. 91, 262502 (2003) D.Vretenar, N.Paar, T.Niksic, P.Ring Spin-Isospin Resonances and the Neutron Skin of Nuclei NUCLEAR STRUCTURE 112,114,116,118,120,122,124Sn; calculated Gamow-Teller resonance and isobaric analog state energies, neutron skin thickness. Relativistic quasiparticle RPA, self-consistent Hartree-Bogoliubov models.
doi: 10.1103/PhysRevLett.91.262502
2002VR01 Phys.Rev. C65, 021301 (2002) D.Vretenar, N.Paar, P.Ring, T.Niksic Toroidal Dipole Resonances in the Relativistic Random Phase Approximation NUCLEAR STRUCTURE 90Zr, 116Sn, 208Pb; calculated toroidal dipole resonance strength distributions, related features. Relativistic RPA.
doi: 10.1103/PhysRevC.65.021301
2001VR01 Phys.Rev. C63, 047301 (2001) D.Vretenar, N.Paar, P.Ring, G.A.Lalazissis Pygmy Dipole Resonances in the Relativistic Random Phase Approximation NUCLEAR STRUCTURE 208Pb; calculated isovector dipole strength distribution, pygmy resonance features.
doi: 10.1103/PhysRevC.63.047301
2001VR02 Nucl.Phys. A692, 496 (2001) D.Vretenar, N.Paar, P.Ring, G.A.Lalazissis Collectivity of the Low-Lying Dipole Strength in Relativistic Random Phase Approximation NUCLEAR STRUCTURE 16,22,24,28O, 40,48,54,60Ca, 48,56,68,78Ni, 100,114,120,132Sn, 122Zr, 208Pb; calculated isovector dipole strength distributions, transition densities. Relativistic RPA.
doi: 10.1016/S0375-9474(01)00653-4
1999VR02 Nucl.Phys. A649, 29c (1999) D.Vretenar, P.Ring, G.A.Lalazissis, N.Paar Relativistic Mean-Field Description of the Dynamics of Giant Resonances NUCLEAR STRUCTURE 208Pb; calculated isovector, isoscalar monopole resonance spectra. Relativistic mean-field theory.
doi: 10.1016/S0375-9474(99)00035-4
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