NSR Query Results
Output year order : Descending NSR database version of April 11, 2024. Search: Author = E.Litvinova Found 75 matches. 2024BA02 Phys.Rev. C 109, 014325 (2024) A.Bahini, P.von Neumann-Cosel, J.Carter, I.T.Usman, N.N.Arsenyev, A.P.Severyukhin, E.Litvinova, R.W.Fearick, R.Neveling, P.Adsley, N.Botha, J.W.Brummer, L.M.Donaldson, S.Jongile, T.C.Khumalo, M.B.Latif, K.C.W.Li, P.Z.Mabika, P.T.Molema, C.S.Moodley, S.D.Olorunfunmi, P.Papka, L.Pellegri, B.Rebeiro, E.Sideras-Haddad, F.D.Smit, S.Triambak, M.Wiedeking, J.J.van Zyl Fine structure of the isoscalar giant monopole resonance in 58Ni, 90Zr, 120Sn, and 208Pb
doi: 10.1103/PhysRevC.109.014325
2024HL01 Phys.Rev. C 109, 014306 (2024) M.Q.Hlatshwayo, J.Novak, E.Litvinova Quantum benefit of the quantum equation of motion for the strongly coupled many-body problem
doi: 10.1103/PhysRevC.109.014306
2023LI19 Phys.Rev. C 107, L041302 (2023) Relativistic approach to the nuclear breathing mode NUCLEAR STRUCTURE 56,58,60,62,64,66,68,70Ni, 90Zr, 120Sn, 208Pb; calculated isoscalar giant monopole resonance (ISGMR) parameters - strength distribution, centroid energy. Relativistic quasiparticle time blocking approximation (RQTBA) and relativistic quasiparticle random phase approximation (RQRPA) with quasiparticle-vibration coupling (qPVC). Investigated the influence of coupling of the ISGMR to the low-energy phonons on spreading and an overall shift of the ISGMR centroid. Comparison to experimental data.
doi: 10.1103/PhysRevC.107.L041302
2023LI60 Eur.Phys.J. A 59, 291 (2023) On the dynamical kernels of fermionic equations of motion in strongly-correlated media
doi: 10.1140/epja/s10050-023-01198-y
2022CA19 Phys.Lett. B 833, 137374 (2022) J.Carter, L.M.Donaldson, H.Fujita, Y.Fujita, M.Jingo, C.O.Kureba, M.B.Latif, E.Litvinova, F.Nemulodi, P.von Neumann-Cosel, R.Neveling, P.Papakonstantinou, P.Papka, L.Pellegri, V.Yu.Ponomarev, A.Richter, R.Roth, E.Sideras-Haddad, F.D.Smit, J.A.Swartz, A.Tamii, R.Trippel, I.T.Usman, H.Wibowo Damping of the isovector giant dipole resonance in 40, 48Ca NUCLEAR REACTIONS 40,48Ca(p, p'), E=200 MeV; measured reaction products; deduced σ(θ, E), Coulomb σ, contributions from the IsoScalar Giant Monopole Resonance (ISGMR) and the ISGQR lying under the IsoVector Giant Dipole Resonance (IVGDR). Comparison with calculations in the framework of RPA and beyond-RPA in a relativistic approach based on an effective meson-exchange interaction, with the UCOM effective interaction. The Separated Sector Cyclotron (SSC) at the iThemba Laboratory for Accelerator Based Sciences (iThemba LABS), Cape Town, South Africa.
doi: 10.1016/j.physletb.2022.137374
2022HL01 Phys.Rev. C 106, 024319 (2022) M.Q.Hlatshwayo, Y.Zhang, H.Wibowo, R.LaRose, D.Lacroix, E.Litvinova Simulating excited states of the Lipkin model on a quantum computer
doi: 10.1103/PhysRevC.106.024319
2022LI67 Phys.Rev. C 106, 064316 (2022) Microscopic response theory for strongly coupled superfluid fermionic systems
doi: 10.1103/PhysRevC.106.064316
2022WI03 Phys.Rev. C 106, 044304 (2022) Nuclear shell structure in a finite-temperature relativistic framework NUCLEAR STRUCTURE 68,70,72,74,76,78Ni; calculated single-particle states at zero and finite temperature up to 4 MeV, dominant fragments of the single-particle states and their spectroscopic factors, temperature evolution of the neutron and proton states, temperature dependence of the quadrupole and octupole phonon strength distributions, temperature-dependent nucleon effective mass, symmetry energy coefficient temperature dependence. Relativistic mean-field calculations taking into account the particle-vibration coupling (RMF+PVC).
doi: 10.1103/PhysRevC.106.044304
2022ZH19 Phys.Rev. C 105, 044326 (2022) Y.Zhang, A.Bjelcic, T.Niksic, E.Litvinova, P.Ring, P.Schuck Many-body approach to superfluid nuclei in axial geometry NUCLEAR STRUCTURE 28Si; calculated single-particle energies, Nilsson diagram, strength of the neutron states, low-energy isoscalar strength functions for varying quadrupole deformation, deformation parameters. 250Cf; calculated deformation parameters. 249,251Cf; calculated single-quasiparticle neutron states. Finite amplitude quasiparticle random phase approximation method. Comparison to experimental data.
doi: 10.1103/PhysRevC.105.044326
2021LI12 Phys.Rev. C 103, 024326 (2021) Impact of complex many-body correlations on electron capture in thermally excited nuclei around 78Ni NUCLEAR STRUCTURE 76,78,80Ni, 76Fe, 80Zn; calculated Gamow-Teller GT+ spectra, electron capture rates as a function of temperature from T=0 to 2.0 MeV, and electron density using finite-temperature proton-neutron relativistic random phase approximation (FT-pnRRPA) and finite-temperature proton-neutron relativistic time blocking approximation (FT-pnRTBA). Comparison of electron capture rates to thermal quasiparticle random phase approximation (TQRPA) calculations. Discussed role of complex nuclear correlations in stellar electron capture process for the nuclei around 78Ni
doi: 10.1103/PhysRevC.103.024326
2021LI56 Phys.Rev. C 104, 044303 (2021) Many-body theory for quasiparticle states in superfluid fermionic systems
doi: 10.1103/PhysRevC.104.044303
2021LI57 Phys.Rev. C 104, 044330 (2021) Nuclear superfluidity at finite temperature NUCLEAR STRUCTURE 68Ni; calculated neutron pairing gap around the Fermi surface, temperature dependence of the pairing gaps. 44,46Ca, 68Ni; calculated pairing gaps for states around Fermi energy and the average pairing gaps as function of temperature; discussed effects of the dynamical kernel at finite temperature. Bardeen, Cooper, and Schrieffer (BCS), and BCS with particle-vibration coupling (PVC) calculations.
doi: 10.1103/PhysRevC.104.044330
2020LI36 Phys.Rev. C 102, 034310 (2020) Many-body correlations in nuclear superfluidity NUCLEAR STRUCTURE 44,46Ca, 66,68Ni, 112,114,116,120,124Sn; calculated state-dependent pairing gaps using static constant-gap approximation with a phenomenological kernel, and with dynamical particle-vibration coupling (PVC) effects. Discussed two-fermion two-time correlation function in the pairing channel within the equation of motion (EOM), in the form of Dyson Bethe-Salpeter equation.
doi: 10.1103/PhysRevC.102.034310
2020VA01 Phys.Rev.Lett. 124, 022501 (2020) V.Vaquero, A.Jungclaus, T.Aumann, J.Tscheuschner, E.V.Litvinova, J.A.Tostevin, H.Baba, D.S.Ahn, R.Avigo, K.Boretzky, A.Bracco, C.Caesar, F.Camera, S.Chen, V.Derya, P.Doornenbal, J.Endres, N.Fukuda, U.Garg, A.Giaz, M.N.Harakeh, M.Heil, A.Horvat, K.Ieki, N.Imai, N.Inabe, N.Kalantar-Nayestanaki, N.Kobayashi, Y.Kondo, S.Koyama, T.Kubo, I.Martel, M.Matsushita, B.Million, T.Motobayashi, T.Nakamura, N.Nakatsuka, M.Nishimura, S.Nishimura, S.Ota, H.Otsu, T.Ozaki, M.Petri, R.Reifarth, J.L.Rodriguez-Sanchez, D.Rossi, A.T.Saito, H.Sakurai, D.Savran, H.Scheit, F.Schindler, P.Schrock, D.Semmler, Y.Shiga, M.Shikata, Y.Shimizu, H.Simon, D.Steppenbeck, H.Suzuki, T.Sumikama, D.Symochko, I.Syndikus, H.Takeda, S.Takeuchi, R.Taniuchi, Y.Togano, J.Tsubota, H.Wang, O.Wieland, K.Yoneda, J.Zenihiro, A.Zilges Fragmentation of Single-Particle Strength around the Doubly Magic Nucleus 132Sn and the Position of the 0f5/2 Proton-Hole State in 131In NUCLEAR REACTIONS 4He(132Sn, n), (132Sn, p), E=203 MeV/nucleon; 9Be(238U, X)132Sn, E=345 MeV/nucleon; measured reaction products, Eγ, Iγ. 131Sn, 131In; deduced γ-ray energies, spectroscopic factors, strong fragmentation of single-hole strength. Comparison with theoretical calculations.
doi: 10.1103/physrevlett.124.022501
2020WI10 Phys.Rev. C 102, 054321 (2020) H.Wibowo, E.Litvinova, Y.Zhang, P.Finelli Temperature evolution of the nuclear shell structure and the dynamical nucleon effective mass NUCLEAR STRUCTURE 56Fe, 68Ni; calculated single-particle states, and dominant fragments of the single-particle states at zero and finite temperatures in the RMF approximation, temperature evolution of the neutron pairing gap and the neutron and proton single-quasiparticle states around the Fermi surface, neutron and proton dynamical effective masses. 56Ni; calculated temperature evolution of the nucleon dynamical effective mass. Single fermion Dyson equation with the dynamical kernel of the particle-vibration-coupling (PVC) using the grand canonical potential with the meson-nucleon covariant energy density functional. Possible relevance to astrophysical modeling of various stages of stellar evolution.
doi: 10.1103/PhysRevC.102.054321
2019LA24 Acta Phys.Pol. B50, 461 (2019) M.B.Latif, I.T.Usman, J.Carter, E.Sideras-Haddad, L.M.Donaldson, M.Jingo, C.O.Kureba, L.Pellegri, R.Neveling, F.D.Smit, F.Nemulodi, P.von Neumann-Cosel, Y.Yu.Ponomarev, P.Papka, J.A.Swartz, G.R.J.Cooper, H.Fujita, P.Papakonstantinou, E.Litvinova Evolution of the IVGDR and Its Fine Structure from Doubly-magic 40Ca to Neutron-rich 48Ca Probed Using (p, p') Scattering NUCLEAR REACTIONS 40,42,44,48Ca(p, p'), E=200 MeV; measured reaction products, Ep, Ip; deduced σ(θ), photoabsorption σ, structure of Isovector Giant Dipole Resonance; calculated photoabsorpion σ using RQTBA, RQRPA and QRPA approaches. Wavelet analysis of the data.
doi: 10.5506/aphyspolb.50.461
2019LI56 Phys.Rev. C 100, 064320 (2019), Erratum Phys.Rev. C 107, 029903 (2023) Toward an accurate strongly coupled many-body theory within the equation-of-motion framework NUCLEAR STRUCTURE 42,48Ca, 68Ni; calculated isoscalar dipole and giant dipole strength distributions, low-energy dipole E1 strength using relativistic quasiparticle random phase approximation (RQRPA), relativistic quasiparticle time blocking approximation (RQTBA), and equation of motion relativistic quasiparticle time blocking approximation (EOM/RQ-TBA3). Comparison with experimental data and with other theoretical models. Relevance to mechanisms of emergent collective phenomena, superfluidity and other dynamical aspects of strongly correlated many-body systems.
doi: 10.1103/PhysRevC.100.064320
2019LI59 Eur.Phys.J. A 55, 223 (2019) Nuclear response in a finite-temperature relativistic framework
doi: 10.1140/epja/i2019-12771-9
2019RO18 Phys.Rev.Lett. 123, 202501 (2019) Time-Reversed Particle-Vibration Loops and Nuclear Gamow-Teller Response NUCLEAR STRUCTURE 90Zr, 90Nb, 90Y; calculated binding energies, Gamow-Teller transitions. Comparison with available data.
doi: 10.1103/PhysRevLett.123.202501
2019WI09 Phys.Rev. C 100, 024307 (2019) Nuclear dipole response in the finite-temperature relativistic time-blocking approximation NUCLEAR STRUCTURE 48Ca, 68Ni, 100,120,132Sn; calculated temperature dependence of the isovector giant electric dipole (IV GDR) response, strength functions widths, contributions of neutron and proton configurations using finite-temperature relativistic time-blocking approximation method.
doi: 10.1103/PhysRevC.100.024307
2018LI41 Phys.Rev.Lett. 121, 082501 (2018) Finite-Temperature Relativistic Nuclear Field Theory: An Application to the Dipole Response NUCLEAR STRUCTURE 48Ca, 100,120,132Sn; calculated temperature dependence of dipole spectra in the even-even nuclei, giant dipole resonance width, the low-energy dipole strength distribution. Thermal (imaginary-time) Green's function formalism.
doi: 10.1103/PhysRevLett.121.082501
2018RO27 Phys.Rev. C 98, 051301 (2018) Coupling charge-exchange vibrations to nucleons in a relativistic framework: Effect on Gamow-Teller transitions and β-decay half-lives NUCLEAR STRUCTURE 48Ca, 78Ni, 132Sn, 208Pb; calculated Gamow-Teller strength distributions (GT-) within the proton-neutron relativistic RPA (pn-RRPA), pn-RRPA including particle-vibration coupling (PVC) effects in the In the time-blocking approximation (pn-RTBA) with coupling to neutral phonons (N), and pn-RTBA with coupling to neutral (N) and charge-exchange (CE) phonons. Comparison with experimental data. RADIOACTIVITY 78Ni, 132Sn(β-); calculated β-decay half-lives by RRPA, RTBA(N) and pn-RTBA(N+CE). Comparison with experimental values.
doi: 10.1103/PhysRevC.98.051301
2018SP01 Phys.Rev. C 97, 054319 (2018) M.Spieker, P.Petkov, E.Litvinova, C.Muller-Gatermann, S.G.Pickstone, S.Prill, P.Scholz, A.Zilges Shape coexistence and collective low-spin states in 112, 114Sn studied with the (p, p'γ) Doppler-shift attenuation coincidence technique NUCLEAR REACTIONS 112,114Sn(p, p'γ), E=8 MeV; measured Eγ, Iγ, pγ-, γγ-coin, Eγ(θ), level half-lives by DSAM using SONIC-HORUS combined spectroscopy setup at the Institute for Nuclear Physics of the University of Cologne. 112,114Sn; deduced levels, J, π, multipolarities, mixing ratios, B(E2), B(E1) γ-decay branching ratios for low-spin states, shape coexistence in low-spin members of the proton 2p-2h intruder configurations, and candidates for 3-phonon and quadrupole-octupole coupled states. Comparison with previous experimental values, and predictions of the sd IBM-2 calculations. Comparison of B(E2) values with those in 108,110Pd, 116,118Xe. Systematics of low-lying single-particle states in A=111-125 odd-A Sn isotopes, 1-, 3- and 5- states and B(E1) for 1- states in A=112-124 even-A Sn isotopes.
doi: 10.1103/PhysRevC.97.054319
2017KA11 Phys.Rev. C 95, 034318 (2017) K.Karakatsanis, G.A.Lalazissis, P.Ring, E.Litvinova Spin-orbit splittings of neutron states in N=20 isotones from covariant density functionals and their extensions NUCLEAR STRUCTURE 40Ca, 38Ar, 36S, 34Si; calculated proton densities with the functional DD-ME2, sizes and relative reductions of neutron p and f splittings using Skyrme SLy5 and Gogny D1S functionals and tensor extensions of these functionals, radial profiles of 2p1/2 and 1f5/2 neutron state for 40Ca and 34Si, spin-orbit splittings and their relative reductions for f and p neutron states without pairing and with TMR pairing, occupation probabilities of 2s1/2 proton state in 36S and 34Si for TMR pairing force, neutron 2p1/2 to 2p3/2 splitting using NL3, NL3*, FSUGold, DD-ME2, DD-MEδ, DD-PC1 and PC-PF1 functionals, radial dependence of total density and proton density for NL3 with and without pairing, change in single-particle energies of 1f5/2 and 1f7/2 and of 2p1/2 and 2p3/2 neutron states for N=20 isotones. Several relativistic functionals such as nonlinear meson-coupling, density-dependent meson coupling, and density-dependent point-coupling models, with separable TMR pairing force of finite range to determine spin-orbit (SO) splittings. Comparison with experimental data.
doi: 10.1103/PhysRevC.95.034318
2017MI06 Phys.Lett. B 769, 339 (2017) K.Miki, R.G.T.Zegers, Sam M.Austin, D.Bazin, B.A.Brown, A.C.Dombos, R.K.Grzywacz, M.N.Harakeh, E.Kwan, S.N.Liddick, S.Lipschutz, E.Litvinova, M.Madurga, M.T.Mustonen, W.J.Ong, S.V.Paulauskas, G.Perdikakis, J.Pereira, W.A.Peters, C.Robin, M.Scott, A.Spyrou, C.Sullivan, R.Titus Isovector excitations in 100Nb and their decays by neutron emission studied via the 100Mo(t, 3He + n) reaction at 115 MeV/ u NUCLEAR REACTIONS 100Mo(t, 3He), E=115 MeV/nucleon; measured reaction products; deduced σ(θ, E), Gamow-Teller transition strength. Comparison with the single-particle estimate and spherical pn-(R)QRPA and pn-RQTBA calculations.
doi: 10.1016/j.physletb.2017.04.004
2017SC07 Phys.Rev.Lett. 118, 172501 (2017) M.Scott, R.G.Zegers, R.Almus, S.M.Austin, D.Bazin, B.A.Brown, C.Campbell, A.Gade, M.Bowry, S.Galies, U.Garg, M.N.Harakeh, E.Kwan, C.Langer, C.Loelius, S.Lipschutz, E.Litvinova, E.Lunderberg, C.Morse, S.Noji, G.Perdikakis, T.Redpath, C.Robin, H.Sakai, Y.Sasamoto, M.Sasano, C.Sullivan, J.A.ostevin, T.Uesaka, D.Weisshaar Observation of the Isovector Giant Monopole Resonance via the 28Si(10Be, 10B*[1.74 MeV]) Reaction at 100 A MeV NUCLEAR REACTIONS 28Si(10Be, 10B'), E=100 MeV/nucleon; measured reaction products, Eγ, Iγ. 28Al, 10B; deduced σ(θ, E), σ(θ), isobaric analog state in 10B, excitation-energy spectrum in 28Al, monopole and dipole contributions and the isovector giant dipole resonance and isovector giant monopole resonance (IVGMR). Comparison with theoretical calculations.
doi: 10.1103/PhysRevLett.118.172501
2016EG02 Phys.Rev. C 94, 034322 (2016) Electric dipole response of neutron-rich calcium isotopes in relativistic quasiparticle time blocking approximation NUCLEAR STRUCTURE 40,42,44,46,48,50,52,54Ca; calculated excitation spectra of collective vibrations (phonons) and phonon-nucleon coupling vertices for J≤6 and natural parity, E1 strengths, integrated dipole strength below 10 MeV and compared with that in Pb, Sn, and Ni isotopes, fraction of the energy-weighted sum rule (EWSR) RQTBA, transition densities for 48Ca; deduced dependence of pygmy dipole strength on the isospin asymmetry parameter. Covariant Lagrangian of quantum hydrodynamics with relativistic quasiparticle time blocking approximation (RQTBA), and relativistic quasiparticle random-phase approximation (RQRPA) calculations. Comparison with experimental data.
doi: 10.1103/PhysRevC.94.034322
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
2016NE08 Phys.Rev. C 94, 024332 (2016) D.Negi, M.Wiedeking, E.G.Lanza, E.Litvinova, A.Vitturi, R.A.Bark, L.A.Bernstein, D.L.Bleuel, S.Bvumbi, T.D.Bucher, B.H.Daub, T.S.Dinoko, J.L.Easton, A.Gorgen, M.Guttormsen, P.Jones, B.V.Kheswa, N.A.Khumalo, A.C.Larsen, E.A.Lawrie, J.J.Lawrie, S.N.T.Majola, L.P.Masiteng, M.R.Nchodu, J.Ndayishimye, R.T.Newman, S.P.Noncolela, J.N.Orce, P.Papka, L.Pellegri, T.Renstrom, D.G.Roux, R.Schwengner, O.Shirinda, S.Siem Nature of low-lying electric dipole resonance excitations in 74Ge NUCLEAR REACTIONS 74Ge(α, α'), E=48 MeV; measured Eγ, Iγ, Eα, αγ-coin, γ(θ), σ(θ) for scattered α particles, relative cross sections of E1 transitions using AFRODITE array for γ detection and silicon detectors for α particles at iThemba Labs cyclotron facility. 74Ge; deduced levels, J, π, B(E1), suppression in relative cross section for the excitation of pygmy-dipole resonances (PDR) as compared to those in (γ, γ') data for excitations above 6 MeV. Comparison of B(E1) with relativistic quasiparticle time blocking approximation (RQTBA) calculations.
doi: 10.1103/PhysRevC.94.024332
2016RO16 Eur.Phys.J. A 52, 205 (2016) Nuclear response theory for spin-isospin excitations in a relativistic quasiparticle-phonon coupling framework
doi: 10.1140/epja/i2016-16205-0
2015AF04 Phys.Rev. C 92, 044317 (2015) Impact of collective vibrations on quasiparticle states of open-shell odd-mass nuclei and possible interference with the tensor force NUCLEAR STRUCTURE 100,102,104,106,108,110,112,114,116,118,120,122,124,126,128,130,132Sn, 134Te, 136Xe, 138Ba, 140Ce, 142Nd, 144Sm, 146Gd, 148Dy, 150Er, 152Yb, 154Hf; calculated level energies, B(E2) and B(E3) for first 2+ and 3- states using relativistic quasiparticle random phase approximation (RQRPA). 116Sn, 148Dy; calculated spectra using RMF and QVC approaches. 101,103,105,107,109,112,113,115,117,119,121,123,125,127,129,131,133Sb, 135Te, 137Xe, 139Ba, 141Ce, 143Nd, 145Sm, 147Gd, 149Dy, 151Er, 153Yb, 155Hf; calculated energy splittings between πh11/2 and πg7/2 states for Sb nuclei, and νi13/2 and νh9/2 states for N=83, Z=52-72 nuclei, spectroscopic factors using covariant density functional theory (CDFT), and relativistic quasiparticle-vibration (RQVC) calculations. Impact of quasiparticle-vibration coupling on the energy splitting of pairs of states in odd-mass nuclei. Comparison with experimental data.
doi: 10.1103/PhysRevC.92.044317
2015LI07 Phys.Rev. C 91, 034332 (2015) Nuclear response theory with multiphonon coupling in a covariant framework
doi: 10.1103/PhysRevC.91.034332
2014LA11 Phys.Rev. C 89, 041601 (2014) E.G.Lanza, A.Vitturi, E.Litvinova, D.Savran Dipole excitations via isoscalar probes: The splitting of the pygmy dipole resonance in 124Sn NUCLEAR REACTIONS 124Sn(α, α'), E=136 MeV; calculated isoscalar and isovector E1 transition strengths, σ as function of the excitation energy of the 124Sn+α system, deflection function. Relativistic quasiparticle time-blocking approximation (RQTBA) in the framework of semiclassical model. Splitting of the low-lying E1 strength in terms of pygmy dipole resonances (PDR). Comparison with experimental data.
doi: 10.1103/PhysRevC.89.041601
2014OZ03 Phys.Rev. C 90, 024304 (2014) B.Ozel-Tashenov, J.Enders, H.Lenske, A.M.Krumbholz, E.Litvinova, P.von Neumann-Cosel, I.Poltoratska, A.Richter, G.Rusev, D.Savran, N.Tsoneva Low-energy dipole strength in 112, 120Sn NUCLEAR REACTIONS 112Sn(γ, γ'), E(endpoint)=5.5, 7.5, 9.5 MeV bremsstrahlung; 120Sn(γ, γ'), E(endpoint)=7.5, 9.1 MeV bremsstrahlung; measured Eγ, Iγ, γ(θ) using S-DALINAC NRF facility at the TU Darmstadt. 112,120Sn; deduced levels, Γ02/Γ, B(E1), summed B(E1) strengths. Fluctuation analysis of γ spectra for unresolved strength. Comparison with quasiparticle-phonon model, and relativistic time blocking approximations (RQTBA), and previous experimental results.
doi: 10.1103/PhysRevC.90.024304
2014PE17 Phys.Lett. B 738, 519 (2014) L.Pellegri, A.Bracco, F.C.L.Crespi, S.Leoni, F.Camera, E.G.Lanza, M.Kmiecik, A.Maj, R.Avigo, G.Benzoni, N.Blasi, C.Boiano, S.Bottoni, S.Brambilla, S.Ceruti, A.Giaz, B.Million, A.I.Morales, R.Nicolini, V.Vandone, O.Wieland, D.Bazzacco, P.Bednarczyk, M.Bellato, B.Birkenbach, D.Bortolato, B.Cederwall, L.Charles, M.Ciemala, G.De Angelis, P.Desesquelles, J.Eberth, E.Farnea, A.Gadea, R.Gernhauser, A.Gorgen, A.Gottardo, J.Grebosz, H.Hess, R.Isocrate, J.Jolie, D.Judson, A.Jungclaus, N.Karkour, M.Krzysiek, E.Litvinova, S.Lunardi, K.Mazurek, D.Mengoni, C.Michelagnoli, R.Menegazzo, P.Molini, D.R.Napoli, A.Pullia, B.Quintana, F.Recchia, P.Reiter, M.D.Salsac, B.Siebeck, S.Siem, J.Simpson, P.-A.Soderstrom, O.Stezowski, Ch.Theisen, C.Ur, J.J.Valiente Dobon, M.Zieblinski Pygmy dipole resonance in 124Sn populated by inelastic scattering of 17O NUCLEAR REACTIONS 124Sn(17O, 17O'), E=340 MeV; measured reaction products, Eγ, Iγ; deduced σ(θ), Form factors, isoscalar strength distribution, pigmy dipole resonance. Comparison with DWBA calculations.
doi: 10.1016/j.physletb.2014.08.029
2014PO03 Phys.Rev. C 89, 054322 (2014) I.Poltoratska, R.W.Fearick, A.M.Krumbholz, E.Litvinova, H.Matsubara, P.von Neumann-Cosel, V.Yu.Ponomarev, A.Richter, A.Tamii Fine structure of the isovector giant dipole resonance in 208Pb: Characteristic scales and level densities NUCLEAR REACTIONS 208Pb(p, p'), E=295 MeV; analyzed experimental data obtained using Grand-Raiden spectrometer at RCNP facility, double-differential σ(θ), continuous and discrete wavelet transform (CWT, DWT) analysis of excitation energy spectrum, extraction of scales for the observed fine structure in isovector-giant dipole resonance (IVGDR), level density of 1- states in IVGDR region, GDR width, B(E1) strength. Comparison with theoretical predictions.
doi: 10.1103/PhysRevC.89.054322
2013LI43 Phys.Rev. C 88, 031302 (2013) Low-energy limit of the radiative dipole strength in nuclei NUCLEAR REACTIONS 94,96,98Mo, 116,122Sn(n, γ), E=thermal; calculated radiative E1 dipole strength functions corresponding to γ transitions between very close nuclear excited states in the quasicontinuum. Thermal continuum quasiparticle random approximation (TCQRPA) approach. Comparison with experimental data. Consequence for r-process nucleosynthesis.
doi: 10.1103/PhysRevC.88.031302
2013LI48 Phys.Rev. C 88, 044320 (2013) E.Litvinova, P.Ring, V.Tselyaev Relativistic two-phonon model for the low-energy nuclear response NUCLEAR STRUCTURE 68,70,72Ni, 112,116,120,124Sn; calculated low-energy dipole spectra, energies of 1- states, B(E1), anharmonicity. Two-quasiparticle Pygmy-dipole modes. Relativistic two-phonon model. Self-consistent relativistic quasiparticle random phase approximation (RQRPA), and relativistic quasiparticle time-blocking approximations (RQTBA, RQTBA-2). Comparison with experimental data.
doi: 10.1103/PhysRevC.88.044320
2012EN02 Phys.Rev. C 85, 064331 (2012) J.Endres, D.Savran, P.A.Butler, M.N.Harakeh, S.Harissopulos, R.-D.Herzberg, R.Krucken, A.Lagoyannis, E.Litvinova, N.Pietralla, V.Yu.Ponomarev, L.Popescu, P.Ring, M.Scheck, F.Schluter, K.Sonnabend, V.I.Stoica, H.J.Wortche, A.Zilges Structure of the pygmy dipole resonance in 124Sn NUCLEAR REACTIONS 124Sn(α, α'), E=136 MeV; measured Eγ, Eα, αγ-coin, αγ(θ) using Big-Bite magnetic Spectrometer at KVI facility; deduced pygmy dipole resonances, levels, differential σ. Comparison with B(E1) strengths in (γ, γ'). Comparison with quasiparticle-phonon model calculations and relativistic quasiparticle random-phase approximations.
doi: 10.1103/PhysRevC.85.064331
2012LI10 Phys.Rev. C 85, 021303 (2012) Quasiparticle-vibration coupling in a relativistic framework: Shell structure of Z=120 isotopes NUCLEAR STRUCTURE 116,120Sn; calculated single-quasiparticle spectra. 290,292,294,296,298,300,302,304,306,308,310120; calculated single-quasiparticle strength distribution, level energies of first 2+ states, B(E2), S(2n). Covariant energy density functional theory (CEDF), quasiparticle- vibration coupling (QVC), relativistic quasiparticle random phase approximation (RQRPA). Comparison with experimental data.
doi: 10.1103/PhysRevC.85.021303
2012MA31 Phys.Rev. C 86, 014319 (2012) R.Massarczyk, R.Schwengner, F.Donau, E.Litvinova, G.Rusev, R.Beyer, R.Hannaske, A.R.Junghans, M.Kempe, J.H.Kelley, T.Kogler, K.Kosev, E.Kwan, M.Marta, A.Matic, C.Nair, R.Raut, K.D.Schilling, G.Schramm, D.Stach, A.P.Tonchev, W.Tornow, E.Trompler, A.Wagner, D.Yakorev Electromagnetic dipole strength of 136Ba below the neutron separation energy NUCLEAR REACTIONS 136Ba(γ, γ'), E at 7.0 MeV/c and 11.4 MeV/c; 136Ba(polarized γ, γ')E=4.7, 5.1, 5.6, 6.1, 6.5, 7.0, 7.5, 8.0, 8.4, 8.7, 9.0, 9.3 MeV; measured Eγ, Iγ, integrated σ(E), photoabsorption σ as a function of excitation energy, γ(θ), γ(lin pol) using Bremsstrahlung facility at ELBE, HZDR, and HIγS facility at TUNL. 136Ba; deduced levels, J, π, widths, pygmy dipole resonances, dipole strength in the quasicontinuum, enhancement of dipole strength. Statistical code used to simulate inelastic transitions and to determine the branching ratios of transitions to ground state. GEANT4 simulations. Comparison with previous experimental studies, and with theoretical calculations using quasiparticle random-phase approximation (QRPA) and relativistic quasiparticle time blocking approximation (RQTBA) approaches. Comparison of photoabsorption σ in 136,138Ba and 139La targets.
doi: 10.1103/PhysRevC.86.014319
2012PO07 Phys.Rev. C 85, 041304 (2012) I.Poltoratska, P.von Neumann-Cosel, A.Tamii, T.Adachi, C.A.Bertulani, J.Carter, M.Dozono, H.Fujita, K.Fujita, Y.Fujita, K.Hatanaka, M.Itoh, T.Kawabata, Y.Kalmykov, A.M.Krumbholz, E.Litvinova, H.Matsubara, K.Nakanishi, R.Neveling, H.Okamura, H.J.Ong, B.Ozel-Tashenov, V.Yu.Ponomarev, A.Richter, B.Rubio, H.Sakaguchi, Y.Sakemi, Y.Sasamoto, Y.Shimbara, Y.Shimizu, F.D.Smit, T.Suzuki, Y.Tameshige, J.Wambach, M.Yosoi, J.Zenihiro Pygmy dipole resonance in 208Pb NUCLEAR REACTIONS 208Pb(p, p'), E=295 MeV; measured Ep, Ip, σ(θ). 208Pb; deduced levels, J, π, PDR, σ(E1), σ(M1), B(E1). Multipole decomposition analysis based on DWBA calculations. Comparison with quasiparticle-phonon model (QPM), relativistic time-blocking approximation (RTBA), and shell model calculations. Separation of PDR and GDR strength with Coulomb-nuclear interference.
doi: 10.1103/PhysRevC.85.041304
2012ST22 J.Phys.:Conf.Ser. 381, 012096 (2012) L.Stuhl, A.Krasznahorkay, M.Csatlos, T.Marketin, E.Litvinova, T.Adachi, A.Algora, J.Daeven, E.Estevez, H.Fujita, Y.Fujita, C.Guess, J.Gulyas, K.Hatanaka, K.Hirota, H.J.Ong, D.Ishikawa, H.Matsubara, R.Meharchand, F.Molina, H.Okamura, G.Perdikakis, B.Rubio, C.Scholl, T.Suzuki, G.Susoy, A.Tamii, J.Thies, R.Zegers, J.Zenihiro Soft spin-dipole resonances in 40Ca NUCLEAR REACTIONS 40,42,44,48Ca(3He, t), E=420 MeV; measured E(triton), I(triton, θ) using magnetic spectrometer Grand Riden at forward angles; deduced unnormalized σ(θ) to IAS and some excited states using GASPAN program package. 40,42,44,48Sc deduced dipole transition strength distribution, periodic spin-dipole strength distribution (most in 40Sc) resembling multi-phonon vibrational band; calculated isospin-flip, spin-isospin-flip dipole transition strength functions using RRPA (relativistic RPA).
doi: 10.1088/1742-6596/381/1/012096
2011AF04 J.Phys.:Conf.Ser. 312, 092004 (2011) A.V.Afanasjev, H.Abusara, E.Litvinova, P.Ring Spectroscopy of the heaviest nuclei (theory) NUCLEAR STRUCTURE 240Pu, 241Am, 251Md; calculated moments of inertia of one-quasiproton configurations using CDFT (covariant density functional theory); compared with data. 228,230,232,234Th, 232,234,236,238,240U, 237,238,240,242,244,246Pu, 242,244,246,248,250Cm, 252,254Cf; calculated deformation energy curves, fission barriers using RMF plus BCS with NL3* parameterization; compared to data.
doi: 10.1088/1742-6596/312/9/092004
2011FO08 Int.J.Mod.Phys. E20, 1491 (2011) A.S.Fomichev, I.G.Mukha, S.V.Stepantsov, L.V.Grigorenko, E.V.Litvinova, V.Chudoba, I.A.Egorova, M.S.Golovkov, A.V.Gorshkov, V.A.Gorshkov, G.Kaminski, S.A.Krupko, Yu.L.Parfenova, S.I.Sidorchuk, R.S.Slepnev, G.M.Ter-Akopian, R.Wolski, M.V.Zhukov Lifetime of 26S and a limit for its 2p decay energy NUCLEAR STRUCTURE 24,26S, 25P; calculated ground state function width, T1/2, energies and charge radii, pairing gap. RMF approach, three-cluster decay model. RADIOACTIVITY 25P(p), 26S(2p) [from Be(32S, X)26S/25P, E=50.3 MeV/nucleon]; measured reaction products, TOF, Ep, Ip; deduced yields, T1/2 limits. Comparison with other data.
doi: 10.1142/S0218301311018216
2011GR05 Acta Phys.Pol. B42, 555 (2011) L.V.Grigorenko, E.V.Litvinova, M.V.Zhukov Recent Advances in Theoretical Studies of 2p Radioactivity: Nuclear Many-body Structure in Three-body Model RADIOACTIVITY 26S(2p); calculated ground state width as a function of the decay energy. RMF calculations, three-cluster decay model.
doi: 10.5506/APhysPolB.42.555
2011HE24 J.Phys.:Conf.Ser. 312, 092029 (2011) A.M.Heilmann, P.von Neumann-Cosel, A.Tamil, T.Adachi, C.Bertulani, J.Carter, H.Fujuita, Y.Fujita, K.Hatanaka, K.Hirota, On.H.Jin, T.Kawabata, A.Krugmann, H.Matsubara, E.Litvinova, R.Neveling, H.Okamura, B.Ozel-Tashenov, I.Poltoratska, V.Yu.Ponomarev, A.Richter, H.Sakaguchi, Y.Sakemi, Y.Sasamoto, Y.Shimizu, Y.Shimbara, F.D.Smit, T.Suzuki, Y.Tameshige, Y.Yasuda, M.Yosoi, J.Zenihiro Electric dipole response in 120Sn NUCLEAR REACTIONS 120Sn(polarized p, p'), E=295 MeV; measured Ep, Ip(θ=forward), proton polarization using high-resolution Grand Raiden magnetic spectrometer; deduced B(E1) strength distribution. Data of published DALINAC-S experiment with (γ, γ') used to extract B(E1) strengths.
doi: 10.1088/1742-6596/312/9/092029
2011LI30 Phys.Rev. C 84, 014305 (2011) Dynamics of nuclear single-particle structure in covariant theory of particle-vibration coupling: From light to superheavy nuclei NUCLEAR STRUCTURE 56Ni, 100,132Sn, 208Pb; calculated single particle spectra and strength distributions, proton and neutron shell gaps, spin-orbit and pseudospin doublet splitting energies. 55Co, 55,57Ni, 57Cu, 99,131In, 99,101,131,133Sn, 101,133Sb, 207Tl, 207,209Pb, 209Bi; calculated spectroscopic factors in single-particle transfer reactions. 292120; calculated single-particle spectrum. Relativistic particle-vibration model in combination with the cranked relativistic mean-field (CRMF) approach. Comparison with experimental data.
doi: 10.1103/PhysRevC.84.014305
2011TA18 Phys.Rev.Lett. 107, 062502 (2011) A.Tamii, I.Poltoratska, P.von Neumann-Cosel, Y.Fujita, T.Adachi, C.A.Bertulani, J.Carter, M.Dozono, H.Fujita, K.Fujita, K.Hatanaka, D.Ishikawa, M.Itoh, T.Kawabata, Y.Kalmykov, A.M.Krumbholz, E.Litvinova, H.Matsubara, K.Nakanishi, R.Neveling, H.Okamura, H.J.Ong, B.Ozel-Tashenov, B.Rubio, H.Sakaguchi, Y.Sakemi, Y.Sasamoto, Y.Shimbara, Y.Shimizu, V.Yu.Ponomarev, A.Richter, F.D.Smit, T.Suzuki, Y.Tameshige, J.Wambach, R.Yamada, M.Yosoi, J.Zenihiro Complete Electric Dipole Response and the Neutron Skin in 208Pb NUCLEAR REACTIONS 208Pb(p, p'), E<20 MeV; measured reaction products, proton spectra; deduced electric dipole (E1) and spin magnetic dipole (M1) modes, E1 strength distribution, neutron skin thickness. Comparison with experimental data.
doi: 10.1103/PhysRevLett.107.062502
2010EN01 Phys.Rev.Lett. 105, 212503 (2010) J.Endres, E.Litvinova, D.Savran, P.A.Butler, M.N.Harakeh, S.Harissopulos, R.-D.Herzberg, R.Krucken, A.Lagoyannis, N.Pietralla, V.Yu.Ponomarev, L.Popescu, P.Ring, M.Scheck, K.Sonnabend, V.I.Stoica, H.J.Wortche, A.Zilges Isospin Character of the Pygmy Dipole Resonance in 124Sn NUCLEAR REACTIONS 124Sn(α, α'), E=136 MeV; measured Eα, Iα, Eγ, Iγ, α-γ-coin.; deduced pigmy resonance σ(θ), B(E1), two groups of states. Comparison with calculations.
doi: 10.1103/PhysRevLett.105.212503
2010LI17 Phys.Rev.Lett. 105, 022502 (2010) E.Litvinova, P.Ring, V.Tselyaev Mode Coupling and the Pygmy Dipole Resonance in a Relativistic Two-Phonon Model NUCLEAR STRUCTURE 116,120Sn, 68,70,72Ni; calculated energies, B(E1), anharmonicities, low-lying dipole spectra. Relativistic quasiparticle time blocking approximation (RQTBA).
doi: 10.1103/PhysRevLett.105.022502
2010MU12 Phys.Rev. C 82, 054315 (2010) I.Mukha, K.Summerer, L.Acosta, M.A.G.Alvarez, E.Casarejos, A.Chatillon, D.Cortina-Gil, I.A.Egorova, J.M.Espino, A.Fomichev, J.E.Garcia-Ramos, H.Geissel, J.Gomez-Camacho, L.Grigorenko, J.Hofmann, O.Kiselev, A.Korsheninnikov, N.Kurz, Yu.A.Litvinov, E.Litvinova, I.Martel, C.Nociforo, W.Ott, M.Pfutzner, C.Rodriguez-Tajes, E.Roeckl, M.Stanoiu, N.K.Timofeyuk, H.Weick, P.J.Woods Spectroscopy of proton-unbound nuclei by tracking their decay products in-flight: One- and two- proton decays of 15F, 16Ne, and 19Na NUCLEAR REACTIONS 9Be(17Ne, X)16Ne, E=410 MeV/nucleon; 9Be(20Mg, X), E=450 MeV/nucleon; measured Ep, Ip, p(heavy-ion)-coin, p(heavy-ion)(θ), pp(heavy-ion fragment)-coin, pp(heavy-ion fragment)(θ), Monte-Carlo simulations. 14O, 15F, 16Ne; deduced levels, J, resonances, proton-decay modes, widths. 17Ne and 20Mg beams from fragmentation of 24Mg beam at 591 MeV/nucleon. RADIOACTIVITY 15F, 19Na(p); 16Ne(2p); measured Ep, Ip, p(14O)-coin, p(14O)(θ), p(18Ne)-coin, p(18Ne)(θ), pp(14O)(θ), pp(14O)-coin; deduced decay energies and widths. Monte-Carlo simulations of angular correlation spectra.
doi: 10.1103/PhysRevC.82.054315
2009LI13 Nucl.Phys. A823, 26 (2009) E.Litvinova, H.P.Loens, K.Langanke, G.Martinez-Pinedo, T.Rauscher, P.Ring, F.-K.Thielemann, V.Tselyaev Low-lying dipole response in the relativistic quasiparticle time blocking approximation and its influence on neutron capture cross sections NUCLEAR STRUCTURE 106,116,132,140Sn; calculated E1 strength function using microscopic quasiparticle time blocking approximation. Comparison with other models. NUCLEAR REACTIONS 105,115,131,139Sn(n, γ), E=0.001-20 MeV; calculated σ. 67,69,71,73,75,77Ni, 105,109,113,115,119,123,129,131,133,135,137,139Sn(n, γ), E≈80-100 keV; calculated stellar capture rate ratio between various models.
doi: 10.1016/j.nuclphysa.2009.03.009
2009LI20 Phys.Rev. C 79, 054312 (2009) E.Litvinova, P.Ring, V.Tselyaev, K.Langanke Relativistic quasiparticle time blocking approximation. II. Pygmy dipole resonance in neutron-rich nuclei NUCLEAR STRUCTURE 68,70,72,74,76,78Ni, 116,118,120,122,124,126,128,130,132,134,136,138,140Sn, 208Pb; calculated dipole excitation spectra, σ, proton and neutron transition densities, pygmy strength, mean energies for giant dipole resonance (GDR) and pygmy dipole resonance (PDR) using relativistic quasiparticle random-phase approximation (RQRPA) and relativistic quasiparticle time-blocking approximation (RQTBA). Comparison with experimental data.
doi: 10.1103/PhysRevC.79.054312
2009LI21 Phys.Rev. C 79, 064303 (2009) E.Litvinova, H.Feldmeier, J.Dobaczewski, V.Flambaum Nuclear structure of lowest 229Th states and time-dependent fundamental constants NUCLEAR STRUCTURE 229Th; calculated Coulomb, neutron and proton kinetic energies, proton and neutron rms radii, and neutron and proton intrinsic quadrupole moments of almost degenerate ground state and the first excited state using Hartree-Fock and Hartree-Fock-Bogoliubov calculations. Comparison with experimental data.
doi: 10.1103/PhysRevC.79.064303
2009TS03 Phys.Rev. C 79, 034309 (2009) V.Tselyaev, J.Speth, S.Krewald, E.Litvinova, S.Kamerdzhiev, N.Lyutorovich, A.Avdeenkov, F.Grummer Description of the giant monopole resonance in the even-A 112-124Sn isotopes within a microscopic model including quasiparticle-phonon coupling NUCLEAR STRUCTURE 90Zr, 110,112,114,116,118,120,122,124,132Sn, 144Sm, 208Pb; calculated strength distribution, mean energies and widths of isoscalar giant-monopole resonances (ISGMR) using two microscopic models: quasiparticle random phase approximation (QRPA) and quasiparticle time blocking approximation (QTBA) with self-consistence scheme based on Hartree-Fock+Bardeen-Cooper-Schrieffer (HF+BCS) approximation and Skyrme energy functional. Comparison with experimental data.
doi: 10.1103/PhysRevC.79.034309
2008LI30 Phys.Rev. C 78, 014312 (2008); Erratum Phys.Rev. C 78, 049902 (2008) E.Litvinova, P.Ring, V.Tselyaev Relativistic quasiparticle time blocking approximation: Dipole response of open-shell nuclei NUCLEAR STRUCTURE 88Sr, 90Zr, 92Mo, 100,106,114,116,120,130Sn; calculated dipole spectra, photoproduction σ, B(E1). Relativistic quasiparticle random phase approximation.
doi: 10.1103/PhysRevC.78.014312
2007LI17 Phys.Lett. B 647, 111 (2007) E.Litvinova, P.Ring, D.Vretenar Relativistic RPA plus phonon-coupling analysis of pygmy dipole resonances NUCLEAR STRUCTURE 132Sn, 208Pb; calculated dipole photoabsorption σ(E), E1 strength distribution, particle transition densities, configurations. Relativistic RPA and particle-phonon coupling of pygmy dipole resonance. Comparison with data.
doi: 10.1016/j.physletb.2007.01.056
2007LI25 Phys.Rev. C 75, 054318 (2007) Quasiparticle time blocking approximation in coordinate space as a model for the damping of the giant dipole resonance NUCLEAR STRUCTURE 116,120,124Sn; calculated E1 photoabsorption cross sections using quasiparticle time blocking approximation. Compared results to available data.
doi: 10.1103/PhysRevC.75.054318
2007LI35 Phys.Rev. C 75, 064308 (2007) E.Litvinova, P.Ring, V.Tselyaev Particle-vibration coupling within covariant density functional theory NUCLEAR STRUCTURE 132Sn, 208Pb; calculated Isoscalar monopole and Isovector E1 resonance strength functions and E1 photoabsorption cross sections using covariant density functional theory including particle vibration coupling.
doi: 10.1103/PhysRevC.75.064308
2007LI50 Phys.Atomic Nuclei 70, 1380 (2007) E.Litvinova, P.Ring, V.Tselyaev Covariant response theory beyond RPA and its application NUCLEAR STRUCTURE 132Sn, 208Pb; calculated isoscalar E0 monopole resonance and isovector E1 resonance strength functions using relativistic random phase approximation with coupling to collective vibrations.
doi: 10.1134/S1063778807080108
2007RI07 Prog.Part.Nucl.Phys. 59, 393 (2007) P.Ring, E.Litvinova, D.Vretenar Covariant density functional theory and nuclear dynamics far from stability
doi: 10.1016/j.ppnp.2007.01.004
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
2007TE05 Phys.Lett. B 647, 104 (2007) G.Tertychny, V.Tselyaev, S.Kamerdzhiev, F.Grummer, S.Krewald, J.Speth, A.Avdeenkov, E.Litvinova Microscopic description of the low lying and high lying electric dipole strength in stable Ca isotopes NUCLEAR STRUCTURE 40,44,48Ca; calculated B(E1), electric dipole strength distribution, GDR. Extended theory of finite Fermi systems.
doi: 10.1016/j.physletb.2007.01.069
2007TE08 Nucl.Phys. A788, 159c (2007) G.Tertychny, V.Tselyaev, S.Kamerdzhiev, F.Grummer, S.Krewald, J.Speth, E.Litvinova, A.Avdeenkov Pygmy dipole resonance in stable Ca isotopes NUCLEAR STRUCTURE 40,44,48Ca; calculated B(E1), electric dipole strength distribution, transition densities. Extended theory of finite Fermi systems using RPA. Comparison with data.
doi: 10.1016/j.nuclphysa.2007.01.077
2007TS01 Phys.Rev. C 75, 014315 (2007) V.Tselyaev, J.Speth, F.Grummer, S.Krewald, A.Avdeenkov, E.Litvinova, G.Tertychny Extended theory of finite Fermi systems: Application to the collective and noncollective E1 strength in 208Pb NUCLEAR STRUCTURE 208Pb; calculated levels, J, π, E1 strength distribution, transition densities. Extended theory of finite Fermi systems.
doi: 10.1103/PhysRevC.75.014315
2006LI16 Phys.Rev. C 73, 044328 (2006) Covariant theory of particle-vibrational coupling and its effect on the single-particle spectrum NUCLEAR STRUCTURE 208Pb; calculated vibrational states energies, transition probabilities. 207Tl, 207,209Pb, 209Bi; calculated single-particle level energies, strength distributions, particle-vibration coupling effects. Dyson equation, comparison with data.
doi: 10.1103/PhysRevC.73.044328
2004HA51 Phys.Rev.Lett. 93, 192501 (2004) T.Hartmann, M.Babilon, S.Kamerdzhiev, E.Litvinova, D.Savran, S.Volz, A.Zilges Microscopic Nature of the Pygmy Dipole Resonance: The Stable Ca Isotopes NUCLEAR REACTIONS 44Ca(γ, γ'), E=9.9 MeV bremsstrahlung; measured Eγ, Iγ. 44Ca deduced electric dipole strength distribution, pygmy dipole resonance features. NUCLEAR STRUCTURE 40,44,48Ca; analyzed B(E1), summed strength; deduced quasiparticle-phonon coupling contributions to pygmy dipole resonance. Microscopic model.
doi: 10.1103/PhysRevLett.93.192501
2004KA06 Yad.Fiz. 67, 180 (2004); Phys.Atomic Nuclei 67, 183 (2004); Erratum Yad.Fiz. 67, 1632 (2004); Phys.Atomic Nuclei 67, 1610 (2004) S.P.Kamerdzhiev, E.V.Litvinova Green's Function Method in the Problem of Complex Configurations in Fermi Systems with pairing NUCLEAR STRUCTURE 104,120,132Sn; calculated dipole photoabsorption σ, isovector dipole resonance energies, widths; deduced pairing contributions. Green's function method.
doi: 10.1134/1.1644022
2003LI11 Yad.Fiz. 66, 584 (2003); Phys.Atomic Nuclei 66, 558 (2003) E.V.Litvinova, S.P.Kamerdzhiev, V.I.Tselyaev Temperature Generalization of the Quasiparticle Random-Phase Approximation with Allowance for a Continuum NUCLEAR STRUCTURE 104,120Sn; calculated dipole photoabsorption σ vs excitation energy, resonance features. Continuum quasiparticle RPA.
doi: 10.1134/1.1563722
2001KA33 Yad.Fiz. 64, No 4, 686 (2001); Phys.Atomic Nuclei 64, 627 (2001) S.P.Kamerdzhiev, E.V.Litvinova Some Problems in the Generalized Theory of Finite Fermi Systems
doi: 10.1134/1.1368221
2001KA62 Eur.Phys.J. A 12, 285 (2001) S.Kamerdzhiev, E.Litvinova, D.Zawischa Quasiparticle-Phonon Interaction in Non-Magic Nuclei
doi: 10.1007/s100500170006
1998KA29 Phys.Rev. C58, 172 (1998) S.Kamerdzhiev, R.J.Liotta, E.Litvinova, V.Tselyaev Continuum Quasiparticle Random-Phase Approximation Description of Isovector E1 Giant Resonances NUCLEAR STRUCTURE 100,104,120,132Sn; calculated E1 photoabsorption σ; deduced continuum effect on giant resonances. Continuum RPA, forced consistency procedure.
doi: 10.1103/PhysRevC.58.172
1998TS15 Bull.Rus.Acad.Sci.Phys. 62, 880 (1998) V.I.Tselyaev, S.P.Kamerdzhiev, R.Liotta, E.V.Litvinova Calculation of E1 Resonance by the ' QRPA + Continuum ' Model NUCLEAR STRUCTURE 104,120Sn; calculated isovector E1 resonance strength distribution; deduced role of single-particle continuum. QRPA plus continuum model.
1996KA53 Bull.Rus.Acad.Sci.Phys. 60, 702 (1996) S.P.Kamerdzhiev, E.V.Litvinova Simple Model of Dynamic Correlation Effects in a Nuclear Ground State NUCLEAR STRUCTURE 40Ca, 16O; calculated levels, B(λ). Microscopic two-level model, ground state correlation effects.
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