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NSR database version of April 11, 2024.

Search: Author = M.Warda

Found 53 matches.

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2023PO11      Acta Phys.Pol. B54, 9-A2 (2023)

K.Pomorski, A.Dobrowolski, B.Nerlo-Pomorska, M.Warda, A.Zdeb, J.Bartel, H.Molique, C.Schmitt, Z.G.Xiao, Y.J.Chen, L.L.Liu

Fission Fragment Mass and Kinetic Energy Yields of Fermium Isotopes

NUCLEAR STRUCTURE 246,248,250,252,254,256,258,260,262Fm; analyzed available data; deduced the post-fission neutron multiplicities, potential energy surfaces.

doi: 10.5506/APhysPolB.54.9-A2
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2023WA08      Phys.Rev. C 107, L041601 (2023)

Y.Wang, F.Guan, X.Diao, M.Wan, Y.Qin, Z.Qin, Q.Wu, D.Guo, D.Si, S.Xiao, B.Zhang, Y.Zhang, B.Tian, X.Wei, H.Yang, P.Ma, R.J.Hu, L.Duan, F.Duan, Q.Hu, J.Ma, S.Xu, Z.Bai, Y.Yang, J.Wang, W.Liu, W.Su, X.Wei, C.-W.Ma, X.Li, H.Wang, F.Wang, Y.Zhang, M.Warda, A.Dobrowolski, B.Nerlo-Pomorska, K.Pomorski, L.Ou, Z.Xiao

Observing the ping-pong modality of the isospin degree of freedom in cluster emission from heavy-ion reactions

NUCLEAR REACTIONS 208Pb(86Kr, X), E=25 MeV/nucleon; measured reaction products, A=3 isobars in coincidence with the intermediate mass fragments of A=6-11; deduced velocity spectra of 3H and 3He, yields ratios of 3H/3He correlate reversely to the neutron-to-proton ratio N/Z of the intermediate mass fragments. Comparison with ImQMD transport model. Yield ratio 3H/3He exhibits evident anticorrelation with the N/Z of the latter, suggesting the ping-pong modality of the N/Z of the emitted particles. Anti-correlation shows dependence on the slope of the symmetry energy at saturation density. Compact Spectrometer for Heavy IoN Experiment (CSHINE) at the final focal plane of the Radioactive Ion Beam Line at Lanzhou (RIBLL-I).

doi: 10.1103/PhysRevC.107.L041601
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2022PO03      Eur.Phys.J. A 58, 77 (2022)

K.Pomorski, A.Dobrowolski, B.Nerlo-Pomorska, M.Warda, J.Bartel, Z.Xiao, Y.Chen, L.Liu, J.-L.Tian, X.Diao

On the stability of superheavy nuclei

doi: 10.1140/epja/s10050-022-00737-3
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2021HA45      Phys.Rev. C 104, 064602 (2021)

R.Han, M.Warda, A.Zdeb, L.M.Robledo

Scission configuration in self-consistent calculations with neck constraints

RADIOACTIVITY 258No(SF); calculated nuclear density distribution contours for different neck configurations and in scission regions, potential energy surface (PES) and neck contour in quadrupole-octupole (Q20, Q30) planes; deduced roles of constraint on the neck parameter and nuclear density distributions, scission configurations, potential energy surfaces, pre-scission line and configuration of the asymmetric fission mode in self-consistent mean-field calculations, including pairing, such as Hartree-Fock-Bogoliubov (HFB) approximation.

doi: 10.1103/PhysRevC.104.064602
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2021KO43      Chin.Phys.C 45, 124108 (2021)

P.V.Kostryukov, A.Dobrowolski, B.Nerlo-Pomorska, M.Warda, Z.Xia, Y.Chen, L.Liu, J.-L.Tian, K.Pomorski

Potential energy surfaces and fission fragment mass yields of even-even superheavy nuclei

NUCLEAR STRUCTURE 254,256,258,260,262Rf, 258,260,262,264,266Sg, 264,266,268,270,272Hs, 276,278,280,282,284Ds, 278,280,282,284,286Cn, 282,284,286,288,290Fl, 286,288,290,292,294Lv, 290,292,294,296,298Og, 294,296,298,300,302120; calculated potential energy surfaces. The Lublin-Strasbourg Drop (LSD) model.

doi: 10.1088/1674-1137/ac29a3
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2021PO06      Chin.Phys.C 45, 054109 (2021)

K.Pomorski, J.M.Blanco, P.V.Kostryukov, A.Dobrowolski, B.Nerlo-Pomorska, M.Warda, Z.-G.Xiao, Y.-J.Chen

Fission fragment mass yields of Th to Rf even-even nuclei

NUCLEAR STRUCTURE 216,218,220,222,224,226,228,230,232,234,236,238,240Th, 220,222,224,226,228,230,232,234,236,238,240,242,244,246U, 222,224,226,228,230,232,234,236,238,240,242,244,246,248,250Pu, 224,226,228,230,232,234,236,238,240,242,244,246,248,250,252Cm, 238,240,242,244,246,248,250,252,254,256,258,260Cf, 240,242,244,246,248,250,252,254,256,258,260,262Fm, 242,244,246,248,250,252,254,256,258,260,262,264No, 250,252,254,256,258,260,262,264,266,268,270,272,274,276Rf; calculated potential energy surfaces, fission barrier heights, fragment mass yields.

doi: 10.1088/1674-1137/abec69
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2021ZD01      Phys.Rev. C 104, 014610 (2021)

A.Zdeb, M.Warda, L.M.Robledo

Description of the multidimensional potential-energy surface in fission of 252Cf and 258No

RADIOACTIVITY 252Cf, 258No(SF); calculated potential energy surfaces (PES) in (Q20, Q30), (Q20, Q22) and (Q30, Q40)planes, density distributions, fission barriers, fission fragments and cross sections; deduced multiple solutions for given constraints and transitions between various overlapping potential-energy surfaces. Self-consistent Hartree-Fock-Bogoliubov approach with the D1S parametrization of the Gogny nucleon-nucleon interaction.

doi: 10.1103/PhysRevC.104.014610
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2020BE28      J.Phys.(London) G47, 113002 (2020)

M.Bender, R.Bernard, G.Bertsch, S.Chiba, J.Dobaczewski, N.Dubray, S.A.Giuliani, K.Hagino, D.Lacroix, Z.Li, P.Magierski, J.Maruhn, W.Nazarewicz, J.Pei, S.Peru, N.Pillet, J.Randrup, D.Regnier, P.G.Reinhard, L.M.Robledo, W.Ryssens, J.Sadhukhan, G.Scamps, N.Schunck, C.Simenel, J.Skalski, I.Stetcu, P.Stevenson, S.Umar, M.Verriere, D.Vretenar, M.Warda, S.Aberg

Future of nuclear fission theory

doi: 10.1088/1361-6471/abab4f
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2020PO09      Phys.Rev. C 101, 064602 (2020)

K.Pomorski, A.Dobrowolski, R.Han, B.Nerlo-Pomorska, M.Warda, Z.Xiao, Y.Chen, L.Liu, J.-L.Tian

Mass yields of fission fragments of Pt to Ra isotopes

RADIOACTIVITY 172,174,176,178,180,182,184,186,188,190,192,194,196,198,200,202Pt, 172,174,176,178,180,182,184,186,188,190,192,194,196,198,200,202Hg, 174,176,178,180,182,184,186,188,190,192,194,196,198,200,202,204Pb, 176,178,180,182,184,186,188,190,192,194,196,198,200,202,204,206Po, 196,198,200,202,204,206,208,210,212,214,216,218,220,222,224,226Rn, 198,200,202,204,206,208,210,212,214,216,218,220,222,224,226,228Ra, 236,238,240,242,244,246Pu(SF); calculated fission fragment mass distributions using collective three-dimensional model with Fourier nuclear shape parametrization and coupling fission, neck and mass asymmetry modes. 184Hg; calculated potential energy surfaces in (q2, q3) and (q3, q4) planes by macroscopic-microscopic model based on the Lublin-Strasbourg drop macroscopic energy and Yukawa-folded single-particle potential. Comparison with experimental fission fragment mass yields for 180,182,184Hg, 194,196Po, 202,204,206,208Rn, and 210,212,214,216,218Ra.

doi: 10.1103/PhysRevC.101.064602
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2019TS02      Phys.Lett. B 790, 583 (2019)

I.Tsekhanovich, A.N.Andreyev, K.Nishio, D.Denis-Petit, K.Hirose, H.Makii, Z.Matheson, K.Morimoto, K.Morita, W.Nazarewicz, R.Orlandi, J.Sadhukhan, T.Tanaka, M.Vermeulen, M.Warda

Observation of the competing fission modes in 178Pt

NUCLEAR REACTIONS 142Nd(36Ar, X)178Pt, E=155, 170, 180 MeV; measured reaction products; deduced fission fragment yields, first observation of a multimodal fission in the sub-lead region.

doi: 10.1016/j.physletb.2019.02.006
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2018WA29      Phys.Rev. C 98, 041602 (2018)

M.Warda, A.Zdeb, L.M.Robledo

Cluster radioactivity in superheavy nuclei

NUCLEAR STRUCTURE 234U, 258No, 284Cn; calculated potential energy surfaces (PEC) in (Q2, Q3) plane, pre- and post-scission configurations. 224Ra, 228Th, 234U, 238Pu, 244Cm, 248Cf, 254Fm, 258No, 264Rf, 268Sg, 274Hs, 278Ds, 284Cn, 290Fl, 294Lv; calculated cluster radioactivity (CR) fission paths as function of Q2 and Q3, and half-lives using microscopic theory. Comparison with available experimental data. Relevance to cluster decay mode in superheavy nuclei (SHN).

doi: 10.1103/PhysRevC.98.041602
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2017ZD01      Phys.Rev. C 95, 054608 (2017)

A.Zdeb, A.Dobrowolski, M.Warda

Fission dynamics of 252Cf

RADIOACTIVITY 252Cf(SF); calculated potential energy surface of 252Cf, tunneling probability, fission fragment mass distributions, mass yields from ground state to excited states, statistical mixing of eigenstates and fission fragment mass distributions. Time-dependent generator coordinate method with the gaussian overlap approximation (TDGCM+GOA) approach.

doi: 10.1103/PhysRevC.95.054608
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2016ZD01      Eur.Phys.J. A 52, 323 (2016)

A.Zdeb, M.Warda, C.M.Petrache, K.Pomorski

Proton emission half-lives within a Gamow-like model

RADIOACTIVITY 109I, 113Cs, 131Eu, 145,146,147Tm, 155,156,157Ta, 160,161Re, 166,167Ir, 170,171Au, 177Tl, 141Ho, 146,147Tm, 150,151Lu, 156Ta, 161Re, 166Ir, 177Tl(p); calculated proton emission T1/2 using simple phenomenological Gamow-like formalism; deduced nuclear radius constant parameter. Compared with other formalisms and with data.

NUCLEAR STRUCTURE 109I, 131Eu, 177Tl; calculated levels, J, π.

doi: 10.1140/epja/i2016-16323-7
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2015BA54      Nucl.Phys. A944, 442 (2015)

A.Baran, M.Kowal, P.-G.Reinhard, L.M.Robledo, A.Staszczak, M.Warda

Fission barriers and probabilities of spontaneous fission for elements with Z ≥ 100

NUCLEAR STRUCTURE 258Fm, 262No, 266Rf, 270Sg, 274Hs, 278Ds, 282Cn, 286Fl, 290,292,294,296,298,300,302,304Lv; calculated fission barriers vs quadrupole moment; revised previous paper by different quadrupole moment definition. 266Hs; calculated fission barriers vs quadrupole moment using MM model, Skyrme HFB approach, Gogny HF model.

doi: 10.1016/j.nuclphysa.2015.06.002
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2015PO08      Phys.Scr. 90, 114013 (2015)

K.Pomorski, M.Warda, A.Zdeb

On spontaneous fission and α-decay half-lives of atomic nuclei

RADIOACTIVITY Te, I, Xe, Sm, Gd, Lu, Hf, Ta, W, Re, Os, Ir, Pt, Au, Hg, Dy, Ho, Er, Tm, Yb, Tl, Rn, Pb, Fr, Bi, Ra, Po, Ac, At, Th, Pa, U, Np, Pu, Am, Cm, Bk, Cf, Fm, Md, No, Lr, Rf, Db, Sg, Bh, Hs, Ds, Mt(α), (SF); calculated T1/2. Comparison with experimental data.

doi: 10.1088/0031-8949/90/11/114013
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2015WA33      Phys.Scr. 90, 114003 (2015)

M.Warda, A.Zdeb

Fission fragment mass yield deduced from density distribution in the pre-scission configuration

RADIOACTIVITY 256,258Fm, 252Cf, 180Hg(SF); calculated potential energy surfaces as well as nuclear shapes; deduced fission fragment mass distributions. Hartree-Fock-Bogoliubov model with the effective Gogny D1S density-dependent interaction.

doi: 10.1088/0031-8949/90/11/114003
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2015ZD01      Acta Phys.Pol. B46, 423 (2015)

A.Zdeb, M.Warda, K.Pomorski

On Systematics of Spontaneous Fission Half-lives

RADIOACTIVITY Th, U, Pu, Cm, Cf, Fm, No(SF); analyzed available data; deduced T1/2 systematics.

doi: 10.5506/APhysPolB.46.423
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2014GH09      Phys.Rev. C 90, 041301 (2014)

L.Ghys, A.N.Andreyev, M.Huyse, P.Van Duppen, S.Sels, B.Andel, S.Antalic, A.Barzakh, L.Capponi, T.E.Cocolios, X.Derkx, H.De Witte, J.Elseviers, D.V.Fedorov, V.N.Fedosseev, F.P.Hessberger, Z.Kalaninova, U.Koster, J.F.W.Lane, V.Liberati, K.M.Lynch, B.A.Marsh, S.Mitsuoka, P.Moller, Y.Nagame, K.Nishio, S.Ota, D.Pauwels, R.D.Page, L.Popescu, D.Radulov, M.M.Rajabali, J.Randrup, E.Rapisarda, S.Rothe, K.Sandhu, M.D.Seliverstov, A.M.Sjodin, V.L.Truesdale, C.Van Beveren, P.Van den Bergh, Y.Wakabayashi, M.Warda

Evolution of fission-fragment mass distributions in the neutron-deficient lead region

RADIOACTIVITY 194,196At, 200,202Fr(β+F)[from U(p, X), E=1.4 GeV at CERN-ISOLDE using HRS and GPS separators]; measured mass and energy distributions of coincident fission fragments after β-delayed fission, ratio of α to β-delayed-fission decays, total kinetic energy. 196At, 200Fr; deduced β-delayed fission decay probabilities, new region of multimodal fission in the neutron-deficient lead region. 196Po; Calculated potential energy surface contour. Comparison with Finite-range liquid-drop (FRLDM) and Hartree-Fock-Bogoliubov (HFB) model calculations. Comparison with experimental results for β-delayed fission of 180Tl.

doi: 10.1103/PhysRevC.90.041301
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2014MC09      Phys.Rev. C 90, 021302 (2014)

J.D.McDonnell, W.Nazarewicz, J.A.Sheikh, A.Staszczak, M.Warda

Excitation-energy dependence of fission in the mercury region

NUCLEAR STRUCTURE 174,180,198Hg, 196,210Po; calculated ground-state potential-energy surfaces in (Q20, Q30) plane, total shell correction energies along the symmetric and asymmetric fission pathways, potential-energy curves as function of excitation energy, fission pathways. Finite-temperature superfluid nuclear density functional theory (FT-DFT) with Skyrme energy density functional SkM* and a density-dependent pairing interaction. Role of shell structure of pre-scission configurations in transition from asymmetric fission in proton-rich nuclei to a more symmetric fission in heavier isotope.

doi: 10.1103/PhysRevC.90.021302
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2014VI01      Eur.Phys.J. A 50, 27 (2014)

X.Vinas, M.Centelles, X.Roca-Maza, M.Warda

Density dependence of the symmetry energy from neutron skin thickness in finite nuclei

COMPILATION 40Ca, 54,56,57Fe, 59Co, 58,60,64Ni, 90,96Zr, 106,116Cd, 116,120,124Sn, 124,126,128,130Te, 208Pb, 209Bi, 232Th, 238U; compiled, calculated neutron skin thickness vs symmetry energy slope parameter. 208Pb; compiled calculations of mean-field model of parity-violating asymmetry vs skin thickness vs symmetry energy ope parameter and vs central radius, surface difuseness vs central radii.

doi: 10.1140/epja/i2014-14027-8
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2014WA20      Phys.Rev. C 89, 064302 (2014)

M.Warda, M.Centelles, X.Vinas, X.Roca-Maza

Influence of the single-particle structure on the nuclear surface and the neutron skin

NUCLEAR STRUCTURE 40,42,44,46,48,50,52,54,56,58,60,62,64,66,68,70Ca, 48,50,52,54,56,58,60,62,64,66,68,70,72,74,76,78Ni, 90,92,94,96,98,100,102,104,106,108,110,112,114,116,118,120,122Zr, 132,134,136,138,140,142,144,146,148,150,152,154,156,158,160,162,164,166,168,170,172,174,176Sn, 208,210,212,214,216,218,220,222,224,226,228,230,232,234,236,238,240,242,244,246,248,250,252,254,256,258,260,262,264,266Pb; calculated proton and neutron rms radii, neutron skin thickness (NST), single-particle energies and Fermi level, configurations, rms radii, neutron, shell, and single-particle level densities and density ratios. Skyrme-Hartree-Fock plus BCS approach with the SLy4 Skyrme force. Discussed impact of the valence shell neutrons on the tail of the neutron density distributions.

doi: 10.1103/PhysRevC.89.064302
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2014ZD01      Acta Phys.Pol. B45, 303 (2014)

A.Zdeb, M.Warda, K.Pomorski

Alpha Decay Half-lives for Super-heavy Nuclei Within a Gamow-like Model

NUCLEAR STRUCTURE Z=100-122; calculated T1/2. Comparison with available data.

doi: 10.5506/APhysPolB.45.303
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2014ZD02      Phys.Scr. 89, 054015 (2014)

A.Zdeb, M.Warda, K.Pomorski

Half-lives of heavy nuclei within simple phenomenological models

COMPILATION Th, Pa, U, Np, Pu, Am, Cm, Bk, Cf, Es, Fm, Md, No, Lr(SF), (α); compiled, analyzed T1/2; deduced simple formula for T1/2.Compared with available data.

doi: 10.1088/0031-8949/89/5/054015
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2013ZD01      Phys.Rev. C 87, 024308 (2013)

A.Zdeb, M.Warda, K.Pomorski

Half-lives for α and cluster radioactivity within a Gamow-like model

RADIOACTIVITY 188,189,190,191,192,193,194,195,196,197,198,199,200,201,202,206,208,209,210,211,212,213,214,215,216,217,218Po, 193,194,195,196,197,198,199,200,201,202,203,204,205,207,209,211,212,213,214,215,216,217,218,219,220At, 195,196,198,199,200,201,202,203,204,205,206,207,208,209,210,211,212,213,214,215,216,217,218,219,220,221,222Rn, 200,201,202,203,204,205,206,207,208,209,210,211,212,213,214,215,216,217,218,219,220,221Fr, 202,203,204,205,206,207,208,209,210,211,212,213,214,215,216,217,218,219,220,221,222,223,224,226Ra, 206,207,208,209,210,211,212,213,214,215,216,217,218,219,220,221,222,223,224,225Ac, 209,210,211,212,213,214,215,216,217,218,219,220,221,222,223,224,225,226,227,228,229,230,232Th, 212,213,214,215,216,217,218,219,220,221,223,224,225,226,227,231Pa, 217,218,219,223,225,226,227,228,229,230,232,233,234,235,236,238U, 226,227,229,230,231,237Np, 229,230,232,234,236,237,238,239,240,242,244Pu, 241,243Am, 234,238,240,242,243,244,245,246,247,248Cm, 247Bk, 240,242,243,244,245,246,248,249,250,251,252Cf, 243,245,247,252,253,254Es, 243,246,247,248,250,251,252,253,254,255,256,257Fm, 246,248,249,255,256,257,258Md, 252,253,254,255,256,257,259No, 253,255,257,258Lr, 255,257,259,261Rf, 257,259,260,262Db, 260,265Sg, 261,262Bh, 265,266Hs, 266Mt, 269,270,271,273,281Ds(α); 221Fr, 221,222,223,224,226Ra, 223,225Ac(14C); 223Ac(15N), 226Th(18O); 228Th(20O); 230U(22Ne); 231Pa(23F); 230,232Th, 231Pa, 232,233,234,235,236U(24Ne); 233,235U(25Ne); 232Th, 234,236U(26Ne); 233,234,236U, 236,238Pu(28Mg); 236U, 237Np, 238Pu(30Mg); 238Pu(32Si); 240Pu, 241Am, 242Cm(34Si); calculated T1/2 for α decay and cluster emissions. Phenomenological model based on Gamow theory with WKB approximation for the penetration of Coulomb barrier. Comparison with experimental values of half-lives.

doi: 10.1103/PhysRevC.87.024308
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2013ZD02      Phys.Scr. T154, 014029 (2013)

A.Zdeb, M.Warda, K.Pomorski

Half-lives for α and cluster radioactivity in a simple model

RADIOACTIVITY 221Fr, 221,222,223,224,226Ra, 225Ac(14C), 226Th(18O), 228Th(20O), 230Th(24Ne), 230U(22Ne), 231Pa(23F), (24Ne), 232Th(24Ne), (25Ne), 232U(24Ne), 233U(24Ne), (25Ne), (28Mg), 234U(24Ne), (25Ne), (28Mg), 235U(24Ne), (25Ne), 236U(24Ne), (25Ne), (28Mg), (30Mg), 236Pu(28Mg), 237Np(30Mg), 238Pu(28Mg), (30Mg), (32Si), 240Pu(34Si), 241Am(34Si), 242Cm(34Si); calculated cluster radioactivity T1/2. Simple phenomenological model based on the WKB theory, comparison with available data.

doi: 10.1088/0031-8949/2013/T154/014029
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2012VI03      Int.J.Mod.Phys. E21, 1250029 (2012)

X.Vinas, M.Warda, M.Centelles, X.Roca-Maza

Neutron skin thickness in neutron-rich nuclei: Bulk and surface contributions and shell effects

NUCLEAR STRUCTURE 208Pb, 90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122Zr; calculated neutron skin thickness; deduced shell effects. Mean field models.

doi: 10.1142/S0218301312500292
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2012WA02      Acta Phys.Pol. B43, 209 (2012)

M.Warda, M.Centelles, X.Vinas, X.Roca-Maza

Nuclear Symmetry Energy and Neutron Skin Thickness

NUCLEAR STRUCTURE 208Pb; calculated neutron skin thickness, parity violating asymmetry parameters. Comparison with experimental data.

doi: 10.5506/APhysPolB.43.209
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2012WA23      Phys.Rev. C 86, 014322 (2012)

M.Warda, J.L.Egido

Fission half-lives of superheavy nuclei in a microscopic approach

NUCLEAR STRUCTURE 270Hs; calculated single-particle energies as function of β2 parameter. 274Hs, 282Cn; calculated potential energy surface (PES) contours as function of quadrupole and octupole moments. 250,252,254,256,258,260,262,264,266Fm, 252,254,256,258,260,262,264,266,268No, 254,256,258,260,262,264,266,268,270Rf, 256,258,260,262,264,266,268,270,272,274,276,278Sg, 258,260,262,264,266,268,270,272,274,276,278,280,282,284,286,288,290,292,294Hs, 264,266,268,270,272,274,276,278,280,282,284,286,288,290,292,294,296Ds, 270,272,274,276,278,280,282,284,286,288,290,292,294,296,298,300,302Cn, 274,276,278,280,282,284, 286,288,290,292,294,296,298,300,302,304Fl, 280, 282,284,286,288,290,292,294,296,298,300,302,304,306Lv, 288,290,292,294,296,298,300,302,304,306, 308118, 292,294,296,298,300,302,304,306,308,310120, 298,300,302,304,306,308,310,312122, 304,306,308,310,312,314124, 312,314,316126; calculated β2, β3, β4, β6, β8 deformation parameters of ground states, neutron and proton pairing energies, Q(α), T1/2(α), S(2p), T1/2(SF), S(2n), S(2p), fission barriers. Hartree-Fock-Bogoliubov (HFB) calculations, finite-range and density-dependent Gogny force with the D1S parameter set. Comparison with experimental data.

doi: 10.1103/PhysRevC.86.014322
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2012WA26      Phys.Rev. C 86, 024601 (2012)

M.Warda, A.Staszczak, W.Nazarewicz

Fission modes of mercury isotopes

RADIOACTIVITY 180,198Hg(SF); calculated potential energy surfaces (PES) in Q20-Q30 plane, elongation, triaxiality, reflection-asymmetry, necking, density distributions at scission configurations, fission pathways as function of quadrupole moment. Self-consistent nuclear density functional theory using Skyrme and Gogny energy density functionals SkM* and D1S.

doi: 10.1103/PhysRevC.86.024601
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2011RO17      Phys.Rev.Lett. 106, 252501 (2011)

X.Roca-Maza, M.Centelles, X.Vinas, M.Warda

Neutron Skin of 208Pb, Nuclear Symmetry Energy, and the Parity Radius Experiment

NUCLEAR STRUCTURE 208Pb; analyzed difference between neutron and proton rms radii, neutron skin; deduced a high linear correlation between parity-violating asymmetry and neutron skin. Parity radius experiment (PREX).

doi: 10.1103/PhysRevLett.106.252501
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2011WA05      Acta Phys.Pol. B42, 477 (2011)

M.Warda

Cluster Radioactivity in 114Ba in the HFB Theory

RADIOACTIVITY 114Ba(SF); calculated potential energy surface, asymmetric fission barrier, shape evolution, T1/2. HFB theory.

doi: 10.5506/APhysPolB.42.477
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2011WA30      Phys.Rev. C 84, 044608 (2011)

M.Warda, L.M.Robledo

Microscopic description of cluster radioactivity in actinide nuclei

RADIOACTIVITY 222,224,226Ra(14C); 226Th(18O); 226Ra, 228Th, 230U(20O); 230,232Th(22O); 230,232Th, 232U(24Ne); 232Th, 234U(26Ne); 234,238U(28Mg); 238Pu(30Mg), (32Si); 240Pu, 242Cm(34Si); calculated hyper-asymmetric fission barriers, T1/2. Hartree-Fock-Bogoliubov model for cluster decay. Comparison with experimental data.

NUCLEAR STRUCTURE 224Ra, 238Pu; calculated potential energy surfaces, fission barriers, shape evolution with quadrupole moment, potential energies, density distributions.

doi: 10.1103/PhysRevC.84.044608
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2010CE02      Phys.Rev. C 82, 054314 (2010)

M.Centelles, X.Roca-Maza, X.Vinas, M.Warda

Origin of the neutron skin thickness of 208Pb in nuclear mean-field models

NUCLEAR STRUCTURE 208Pb; calculated neutron skin thickness, sharp radius, surface width, central radius and surface diffuseness of neutron and proton density distributions, and nucleon densities using Skyrme, Gogny and relativistic mean-field models with about 25 different interactions.

doi: 10.1103/PhysRevC.82.054314
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2010WA10      Int.J.Mod.Phys. E19, 787 (2010)

M.Warda, A.Staszczak, L.Prochniak

Comparison of self-consistent Skyrme and Gogny calculations for light Hg isotopes

NUCLEAR STRUCTURE 178,180,182,184Hg; calculated potential energy surfaces, ground state properties. Hartree-Fock-Bogoliubov approach with the Skyrme and Gogny force.

doi: 10.1142/S0218301310015230
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2010WA13      Phys.Rev. C 81, 054309 (2010)

M.Warda, X.Vinas, X.Roca-Maza, M.Centelles

Analysis of bulk and surface contributions in the neutron skin of nuclei

NUCLEAR STRUCTURE 100,132Sn, 208Pb; Z=50, A=100-176; Z=82, A=168-268; calculated halo factor, neutron and proton densities, neutron skin thicknesses using Gogny, Skyrme, and covariant nuclear mean-field interactions. 40,48Ca, 54,56,57Fe, 58,60,64Ni, 59Co, 90,96Zr, 106,116Cd, 112,116,120,124Sn, 122,124,126,128,130Te, 208Pb, 209Bi, 232Th, 238U; analyzed experimental neutron skin thicknesses with results of the covariant NL3 and FSUGold parameter sets of the nonrelativistic Skyrme SLy4 and Gogny D1S forces.

doi: 10.1103/PhysRevC.81.054309
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2009CE01      Phys.Rev.Lett. 102, 122502 (2009)

M.Centelles, X.Roca-Maza, X.Vinas, M.Warda

Nuclear Symmetry Energy Probed by Neutron Skin Thickness of Nuclei

doi: 10.1103/PhysRevLett.102.122502
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2009WA14      Phys.Rev. C 80, 024316 (2009)

M.Warda, X.Vinas, X.Roca-Maza, M.Centelles

Neutron skin thickness in the droplet model with surface width dependence: Indications of softness of the nuclear symmetry energy

NUCLEAR STRUCTURE A=40-238; analyzed neutron skin thickness, its correlation with ratio of bulk symmetry energy to surface stiffness coefficient (J/Q) and neutron excess (N-Z)/A using the droplet model and effective nuclear interactions. Comparison with experimental data.

doi: 10.1103/PhysRevC.80.024316
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2009WA34      Eur.Phys.J. A 42, 605 (2009)

M.Warda

Microscopic analysis of the fission barriers in 256Fm and 258Fm

NUCLEAR STRUCTURE 256,258Fm; calculated potential energy surfaces, fission mechanism features using HFB theory with Gogny D1S force.

doi: 10.1140/epja/i2009-10829-y
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2008RO08      Int.J.Mod.Phys. E17, 204 (2008)

L.M.Robledo, M.Warda

Cluster radioactivity of Th isotopes in the mean-field HFB theory

RADIOACTIVITY 226Th(18O), 228Th(20O), 230Th(22O), 230Th(24Ne), 232Th(22O), 232Th(24Ne), 232Th(26Ne); calculated potential energy surfaces, number of nucleons after scission as a function of quadrupole and octupole moments, half-lives of cluster emission using Hartree-Fock-Bogoliubov theory with the D1S Gogny force. Comparison with experimental data.

doi: 10.1142/S0218301308009707
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2008RO30      Int.J.Mod.Phys. E17, 2275 (2008)

L.M.Robledo, M.Warda

The emission of heavy clusters described in the mean-field HFB theory: the case of 242Cm

RADIOACTIVITY 242Cm(SF); 34Si; analyzed cluster emission paths; deduced T1/2. HFB calculations with Gogny D1S interaction.

doi: 10.1142/S0218301308011471
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2008VI04      Int.J.Mod.Phys. E17, 177 (2008)

X.Vinas, M.Centelles, M.Warda

Semiclassical description of exotic nuclear shapes

NUCLEAR STRUCTURE Z=122-366; N=188-626; calculated neutron and proton densities, single-particle potentials, potential energy surface (PES) as a function of the quadrupole mass moment, two-dimensional density plots. Extended Thomas-Fermi (ETS) method and the Skyrme force SkM.

doi: 10.1142/S0218301308009677
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2007WA06      Int.J.Mod.Phys. E16, 452 (2007)

M.Warda

Toroidal structure of super-heavy nuclei in the HFB theory

NUCLEAR STRUCTURE 320132, 416164, 476184; calculated potential energy vs quadrupole deformation, toroidal structure.

doi: 10.1142/S0218301307005880
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2006WA08      Int.J.Mod.Phys. E15, 504 (2006)

M.Warda, J.L.Egido, L.M.Robledo

Selfconsistent calculation of intrinsic properties of super-heavy nuclei with the Gogny force

NUCLEAR STRUCTURE 290Lv; calculated single-particle energies vs deformation. Z=100-126; calculated deformation parameters, pairing energies.

doi: 10.1142/S0218301306004442
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2006WA30      Phys.Scr. T125, 226 (2006)

M.Warda, J.Egido, L.Robledo

Spontaneous fission of Fm isotopes in the HFB framework

NUCLEAR STRUCTURE 248,256Fm; calculated potential energy surfaces, octupole moments, fission paths.

RADIOACTIVITY 240,242,244,246,248,250,252,254,256,258,260,262,264,266Fm(SF); calculated T1/2.

doi: 10.1088/0031-8949/2006/T125/063
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2005WA13      Int.J.Mod.Phys. E14, 403 (2005)

M.Warda, K.Pomorski, J.L.Egido, L.M.Robledo

The fission of 252Cf from a mean field perspective

NUCLEAR STRUCTURE 252Cf; calculated potential energy surface, shape evolution during fission. Hartree-Fock-Bogoliubov approach, Gogny force.

doi: 10.1142/S0218301305003193
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2005WA30      J.Phys.(London) G31, S1555 (2005)

M.Warda, K.Pomorski, J.L.Egido, L.M.Robledo

Multimodal fission of 252Cf in the Gogny HFB model

NUCLEAR STRUCTURE 252Cf; calculated potential energy surfaces, scission configurations. Hartree-Fock-Bogolubov model, Gogny force.

doi: 10.1088/0954-3899/31/10/031
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2004WA07      Int.J.Mod.Phys. E13, 169 (2004)

M.Warda, K.Pomorski, J.L.Egido, L.M.Robledo

Microscopic structure of the bimodal fission of 258Fm

NUCLEAR STRUCTURE 258Fm; calculated single-particle level energies vs deformation, fission mechanism features.

doi: 10.1142/S0218301304001904
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2003WA15      Yad.Fiz. 66, 1214 (2003); Phys.Atomic Nuclei 66, 1178 (2003)

M.Warda, J.L.Egido, L.M.Robledo, K.Pomorski

Fission Paths in Fm Region Calculated with the Gogny Forces

NUCLEAR STRUCTURE 256,258Fm; calculated fission barriers, potential energy surfaces. Hartree-Fock-Bogoliubov approach, Gogny force.

doi: 10.1134/1.1586434
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2003WA34      Acta Phys.Pol. B34, 1959 (2003)

M.Warda

The single-particle densities in the fission of 258Fm

NUCLEAR STRUCTURE 258Fm; calculated single-particle levels, fission mechanism features.


2002WA22      Phys.Rev. C66, 014310 (2002)

M.Warda, J.L.Egido, L.M.Robledo, K.Pomorski

Self-Consistent Calculations of Fission Barriers in the Fm Region

NUCLEAR STRUCTURE 254,256,258Fm, 258No, 260Rf; calculated fission barriers, potential energy surfaces, related features. 254,256,258Fm calculated spontaneous fission T1/2. Hartree-Fock-Bogoliubov approach.

doi: 10.1103/PhysRevC.66.014310
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1998WA17      Nucl.Phys. A635, 484 (1998)

M.Warda, B.Nerlo-Pomorska, K.Pomorski

Isospin Dependence of Proton and Neutron Radii within Relativistic Mean Field Theory

NUCLEAR STRUCTURE A=40-208; analyzed neutron, proton radii of beta-stable even-even nuclei; deduced phenomenological formula. Several isotope, isotone chains also discussed. Relativistic mean-field theory.

doi: 10.1016/S0375-9474(98)00188-2
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1997BA14      Z.Phys. A357, 33 (1997)

A.Baran, K.Pomorski, M.Warda

Neutron Halos in Heavy Nuclei-Relativistic Mean Field Approach

NUCLEAR STRUCTURE 58Ni, 96Ru, 144,154Sm, 96Zr, 232Th, 176Yb, 238U; calculated single nucleon partial density ratio, halo factor, baryon density related features, antiprotonic-nucleon annihilation width. Spherical relativistic mean field model.

doi: 10.1007/s002180050210
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1997PO13      Nucl.Phys. A624, 349 (1997)

K.Pomorski, P.Ring, G.A.Lalazissis, A.Baran, Z.Lojewski, B.Nerlo-Pomorska, M.Warda

Ground State Properties of the β Stable Nuclei in Various Mean Field Theories

NUCLEAR STRUCTURE A=16-256; calculated even-even stable nucleus proton, neutron separation energies, charge radii, other ground state properties. Several models compared. Comparisons with data.

doi: 10.1016/S0375-9474(97)00367-9
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