NSR Query Results
Output year order : Descending NSR database version of April 24, 2024. Search: Author = M.G.Itkis Found 176 matches. Showing 1 to 100. [Next]2024KO05 Phys.Rev. C 109, 034616 (2024) E.M.Kozulin, G.N.Knyazheva, A.V.Karpov, V.V.Saiko, A.A.Bogachev, I.M.Itkis, K.V.Novikov, I.V.Vorobiev, I.V.Pchelintsev, E.O.Savelieva, R.S.Tikhomirov, M.G.Itkis, Yu.Ts.Oganessian Detailed study of multinucleon transfer features in the 136Xe + 238U reaction
doi: 10.1103/PhysRevC.109.034616
2023IB01 Bull.Rus.Acad.Sci.Phys. 87, 1118 (2023) D.Ibadullayev, V.K.Utyonkov, Yu.Ts.Oganessian, F.Sh.Abdullin, S.N.Dmitriev, M.G.Itkis, A.V.Karpov, N.D.Kovrizhnykh, D.A.Kuznetsov, O.V.Petrushkin, A.V.Podshibiakin, A.N.Polyakov, A.G.Popeko, R.N.Sagaidak, L.Schlattauer, V.D.Shubin, M.V.Shumeiko, D.I.Solovyev, Yu.S.Tsyganov, A.A.Voinov, V.G.Subbotin, A.Yu.Bodrov, A.V.Sabelnikov, Sh.G.Giniyatova, K.A.Kuterbekov Study of the 242Pu + 48Ca Reaction at Super Heavy Element Factory RADIOACTIVITY 286,287Fl, 283Cn, 279Ds, 261Rf(α) [from 242Pu(48Ca, X), E=242.5, 247.5 MeV]; measured reaction products, Eα, Iα; deduced α-particle energies, T1/2, σ, 2+ rotational level in 282Cn. A new gas-filled separator DGFRS-2 online to the DC-280 cyclotron of the Superheavy Element Factory at the Flerov Laboratory of Nuclear Reactions, Joint Institute for Nuclear Research.
doi: 10.3103/S1062873823702945
2023KO22 Bull.Rus.Acad.Sci.Phys. 87, 1098 (2023) N.D.Kovrizhnykh, Yu.Ts.Oganessian, V.K.Utyonkov, F.Sh.Abdullin, S.N.Dmitriev, A.A.Dzhioev, D.Ibadullayev, M.G.Itkis, A.V.Karpov, D.A.Kuznetsov, O.V.Petrushkin, A.V.Podshibiakin, A.N.Polyakov, A.G.Popeko, I.S.Rogov, R.N.Sagaidak, L.Schlattauer, V.D.Shubin, M.V.Shumeiko, D.I.Solovyev, Yu.S.Tsyganov, A.A.Voinov, V.G.Subbotin, A.Yu.Bodrov, A.V.Sabelnikov, A.V.Khalkin First Experiment at the Super Heavy Element Factory: New Data from the 243Am + 48Ca Reaction RADIOACTIVITY 286,287,288,289Mc(α), 268Db(SF), (α), 264Lr, 279Rg(SF) [from 243Am(48Ca, X), E=239-259 MeV]; measured decay products, Eα, Iα; deduced α-particle energies, branches, T1/2, σ. The new separator DGFRS-2 and cyclotron DC280 of the SHE Factory at FLNR JINR.
doi: 10.3103/S106287382370291X
2023OG03 Phys.Rev. C 108, 024611 (2023) Yu.Ts.Oganessian, V.K.Utyonkov, M.V.Shumeiko, F.Sh.Abdullin, S.N.Dmitriev, D.Ibadullayev, M.G.Itkis, N.D.Kovrizhnykh, D.A.Kuznetsov, O.V.Petrushkin, A.V.Podshibiakin, A.N.Polyakov, A.G.Popeko, I.S.Rogov, R.N.Sagaidak, L.Schlattauer, V.D.Shubin, D.I.Solovyev, Yu.S.Tsyganov, A.A.Voinov, V.G.Subbotin, N.S.Bublikova, M.G.Voronyuk, A.V.Sabelnikov, A.Yu.Bodrov, Z.G.Gan, Z.Y.Zhang, M.H.Huang, H.B.Yang New isotope 276Ds and its decay products 272Hs and 268Sg from the 232Th+48Ca reaction NUCLEAR REACTIONS 232Th(48Ca, 3n)277Ds, 232Th(48Ca, 4n)276Ds, E=231, 1, 237.8, 250.6 MeV; measured reaction products, Eα, Iα, fission fragments; deduced production σ(E). Systematics of production cross-sections with 48Ca beam on 242,244Pu, 238U, 232Th, 226Ra, 245,248Cm, 249Bk targets. Gas filled separator DGFRS-2 at the new cyclotron DC280 (SHE Factory, JINR). RADIOACTIVITY 268Sg(SF)[from 232Th(48Ca, X), E=231, 1, 237.8, 250.6 MeV]; 272Hs(α)[from 232Th(48Ca, X), E=231, 1, 237.8, 250.6 MeV]; 276Ds(α), (SF)[from 232Th(48Ca, X), E=231, 1, 237.8, 250.6 MeV]; measured Eα, Iα, fission fragments; deduced T1/2, α-decay and SF decay branching and partial T1/2 for 276Ds, Q value for α-decay. Systematics of partial T1/2 for Hs, Ds, Cn, Fl, Lv and Og isotopes.
doi: 10.1103/PhysRevC.108.024611
2022IT02 Eur.Phys.J. A 58, 178 (2022) M.G.Itkis, G.N.Knyazheva, I.M.Itkis, E.M.Kozulin Experimental investigation of cross sections for the production of heavy and superheavy nuclei NUCLEAR REACTIONS 208Pb(48Ca, X)256No, 206Pb(44Ca, X)250No, 206Pb(40Ca, X), 208Pb(50Ti, X)256No/258Rf, 208Pb(58Fe, X)266Hs, 208Pb(86Kr, X)294Og, 208Pb(136Xe, X)344136, E not given; measured reaction products; deduced yields, σ, mass-angular distributions of binary fragments, fusion probability in cold reactions at energies above the Coulomb barrier at excitation energy of about 40 MeV from experimental ER cross sections. CORSET spectrometer, CUBE setup, Flerov Laboratory of Nuclear Reactions, Joint Institute for Nuclear Research, Dubna, Russia.
doi: 10.1140/epja/s10050-022-00806-7
2022KO03 Phys.Rev. C 105, 014607 (2022) E.M.Kozulin, G.N.Knyazheva, I.M.Itkis, M.G.Itkis, Y.S.Mukhamejanov, A.A.Bogachev, K.V.Novikov, V.V.Kirakosyan, D.Kumar, T.Banerjee, M.Cheralu, M.Maiti, R.Prajapat, R.Kumar, G.Sarkar, W.H.Trzaska, A.N.Andreyev, I.M.Harca, A.Mitu, E.Vardaci Fission of 180, 182, 183Hg* and 178Pt* nuclei at intermediate excitation energies NUCLEAR REACTIONS 142Nd(36Ar, F)178Pt*, E=158, 169, 181 MeV; 144Sm(36Ar, F)180Hg*, E=158, 181 MeV; 142,143Nd(40Ca, F)182Hg*/183Hg*, E=158, 169, 181 MeV; measured binary reaction products in coincidence mode using the double-arm time-of-flight spectrometer CORSET, consisting of a compact start detector and a position-sensitive stop detector of microchannel plates at the U400 cyclotron Flerov laboratory of Nuclear Reactions, Dubna; deduced mass-energy distributions of fission fragments at energies near and above the Coulomb barrier, mass-total kinetic energy (M-TKE) distribution contours of primary binary fragments, mass yields, fission fragments mass yields, asymmetric fission of preactinide nuclei, existence of well-deformed proton shell at Z≈36 and a less deformed proton shell at Z≈46. Comparison with previous experimental results.
doi: 10.1103/PhysRevC.105.014607
2022OG05 Phys.Rev. C 106, 024612 (2022) Yu.Ts.Oganessian, V.K.Utyonkov, D.Ibadullayev, F.Sh.Abdullin, S.N.Dmitriev, M.G.Itkis, A.V.Karpov, N.D.Kovrizhnykh, D.A.Kuznetsov, O.V.Petrushkin, A.V.Podshibiakin, A.N.Polyakov, A.G.Popeko, R.N.Sagaidak, L.Schlattauer, V.D.Shubin, M.V.Shumeiko, D.I.Solovyev, Yu.S.Tsyganov, A.A.Voinov, V.G.Subbotin, A.Yu.Bodrov, A.V.Sabelnikov, A.Lindner, K.P.Rykaczewski, T.T.King, J.B.Roberto, N.T.Brewer, R.K.Grzywacz, Z.G.Gan, Z.Y.Zhang, M.H.Huang, H.B.Yang Investigation of 48Ca-induced reactions with 242Pu and 238U targets at the JINR Superheavy Element Factory RADIOACTIVITY 286,287Fl, 283Cn(α), (SF)[from 242Pu(48Ca, 3n), (48Ca, 4n)286Fl/287Fl, E=242.5, 247.5 MeV, and 238U(48Ca, 3n)283Cn, E=231.1, 234.4 MeV followed by separation of fragments using gas-filled separator DGFRS-2 separator at the SHE Factory of JINR-Dubna]; measured evaporation residues (ERs), Eα, fission fragments (SF), (ER)α-coin, αα-coin, (ER)(SF)-coin using double-sided silicon strip detectors (DSSDs), single-sided silicon-strip detectors (SSSDs) and multiwire proportional chambers (MWPCs); deduced T1/2 for α and SF decays, branching ratios, Q(α), production cross sections for superheavy nuclei. 279Ds, 275Hs, 271Sg(α), (SF); 282Cn, 267Rf(SF)[from 286,287Fl, 283Cn decay chains]; measured Eα, ESF deduced T1/2 for α and SF decays, average decay properties. 287Fl; discussed possible existence of isomeric states from consecutive α decays. 282Cn; discussed possible population of 2+ state. Comparison with previously available experimental results.
doi: 10.1103/PhysRevC.106.024612
2022OG07 Phys.Rev. C 106, L031301 (2022) Yu.Ts.Oganessian, V.K.Utyonkov, N.D.Kovrizhnykh, F.Sh.Abdullin, S.N.Dmitriev, D.Ibadullayev, M.G.Itkis, D.A.Kuznetsov, O.V.Petrushkin, A.V.Podshibiakin, A.N.Polyakov, A.G.Popeko, R.N.Sagaidak, L.Schlattauer, I.V.Shirokovski, V.D.Shubin, M.V.Shumeiko, D.I.Solovyev, Yu.S.Tsyganov, A.A.Voinov, V.G.Subbotin, A.Yu.Bodrov, A.V.Sabelnikov, A.V.Khalkin, V.B.Zlokazov, K.P.Rykaczewski, T.T.King, J.B.Roberto, N.T.Brewer, R.K.Grzywacz, Z.G.Gan, Z.Y.Zhang, M.H.Huang, H.B.Yang First experiment at the Super Heavy Element Factory: High cross section of 288Mc in the 243Am + 48Ca reaction and identification of the new isotope 264Lr NUCLEAR REACTIONS 243Am(48Ca, 2n)289Mc, (48Ca, 3n)288Mc, (48Ca, 4n), E=239.1, 240.9, 243.9 MeV; measured evaporation residues (ER), α, and fission fragments (SF), (ER)α-coin, αα-coin, α(SF)-coin, ER(SF)-coin, production σ(E) for superheavy nuclei using gas-filled separator DGFRS-2, two double-sided strip detectors (DSSD), two multiwire proportional chambers (MWPC) at the DC280 cyclotron facility of the Super Heavy Element Factory of JINR-Dubna. RADIOACTIVITY 288,289Mc, 284,285Nh, 280,281Rg, 276Mt, 272Bh, 268Db(α); 281Rg, 277Mt, 268Db, 264Lr(SF)[from 243Am(48Ca, xn)]; measured Eα, ESF, (ER)α-coin, αα-coin, α(SF)-coin, ER(SF)-coin, T1/2. 268Db; deduced α/SF branching ratio. 264Lr; deduced new isotope, T1/2, average decay properties. 288Mc, 284Nh(EC), (β+); discussed upper limit for decay mode. History of 55 correlated events observed for 288Mc and six for 289Mc is listed by authors in the Supplemental material of the paper.
doi: 10.1103/PhysRevC.106.L031301
2022OG08 Phys.Rev. C 106, 064306 (2022) Yu.Ts.Oganessian, V.K.Utyonkov, N.D.Kovrizhnykh, F.Sh.Abdullin, S.N.Dmitriev, A.A.Dzhioev, D.Ibadullayev, M.G.Itkis, A.V.Karpov, D.A.Kuznetsov, O.V.Petrushkin, A.V.Podshibiakin, A.N.Polyakov, A.G.Popeko, I.S.Rogov, R.N.Sagaidak, L.Schlattauer, V.D.Shubin, M.V.Shumeiko, D.I.Solovyev, Yu.S.Tsyganov, A.A.Voinov, V.G.Subbotin, A.Yu.Bodrov, A.V.Sabelnikov, A.V.Khalkin, K.P.Rykaczewski, T.T.King, J.B.Roberto, N.T.Brewer, R.K.Grzywacz, Z.G.Gan, Z.Y.Zhang, M.H.Huang, H.B.Yang New isotope 286Mc produced in the 243Am + 48Ca reaction NUCLEAR REACTIONS 243Am(48Ca, X)288Mc/289Mc, 243Am(48Ca, 2n), (48Ca, 3n), (48Ca, 4n), (48Ca, 5n), E=242.2, 250.8, 259.1 MeV; measured reaction products, evaporation residues (ER), Eα, Iα, fission fragments, (SF), (SF)α-coin, (ER)α-coin, αα-coin; deduced σ(E) for superheavy nuclei production. Gas-filled separator DGFRS-2 at the DC280 cyclotron (SHE Factory at JINR). Measurements with double-sided silicon strip detectors (DSSDs), single-sided silicon-strip detectors (SSSDs) and multiwire proportional chambers (MWPCs). RADIOACTIVITY 286,287,288Mc, 289Mc, 282Nh, 283Nh, 284Nh, 285Nh, 278,280Rg, 274,275,276Mt, 270,271,272Bh, 268Db(α); 279,281Rg, 266,267,268Db, 264Lr(SF) [from 243Am(48Ca, xn), E=E=242.2, 250.8, 259.1 MeV]; measured Eα, ESF; deduced T1/2. 268Db; deduced α/SF branching ratio. 286Mc; deduced new isotope. Comparison of deduced half-lives with theoretical predictions.
doi: 10.1103/PhysRevC.106.064306
2021BO22 Phys.Rev. C 104, 024623 (2021) A.A.Bogachev, E.M.Kozulin, G.N.Knyazheva, I.M.Itkis, M.G.Itkis, K.V.Novikov, D.Kumar, T.Banerjee, I.N.Diatlov, M.Cheralu, V.V.Kirakosyan, Y.S.Mukhamejanov, A.N.Pan, I.V.Pchelintsev, R.S.Tikhomirov, I.V.Vorobiev, M.Maiti, R.Prajapat, R.Kumar, G.Sarkar, W.H.Trzaska, A.N.Andreyev, I.M.Harca, E.Vardaci Asymmetric and symmetric fission of excited nuclei of 180, 190Hg and 184, 192, 202Pb formed in the reactions with 36Ar and 40, 48Ca ions NUCLEAR REACTIONS 144Sm(36Ar, X)180Hg*, E=158, 181 MeV; 154Sm(36Ar, X)190Hg*, E=158, 181 MeV; 144Sm(40Ca, X)184Pb*, E=180, 190 MeV; 144Sm(48Ca, X)192Pb*, E=182, 188, 202 MeV; 154Sm(48Ca, X)202Pb*, E=173, 183, 194 MeV; measured binary reaction products in coincidence mode from the excited states of the compound nuclei using the double-arm time-of-flight spectrometer CORSET at the U400 cyclotron facility of Flerov Laboratory of Nuclear Reactions (FLNR), Dubna; deduced mass-total kinetic energy (TKE) distributions of binary fragments, mass and TKE distributions of fission fragments, contributions of symmetric and asymmetric fissions, well deformed proton shell at Z≈36 and less deformed proton shell at Z≈46.
doi: 10.1103/PhysRevC.104.024623
2021BO23 Bull.Rus.Acad.Sci.Phys. 85, 1080 (2021), Erratum Bull.Rus.Acad.Sci.Phys. 86, 1557(2022) A.A.Bogachev, E.M.Kozulin, G.N.Knyazheva, I.M.Itkis, K.V.Novikov, T.Banerjee, M.Cheralu, M.G.Itkis, E.Mukhamedzhanov, D.Kumar, A.Pan, I.V.Pchelintsev, I.V.Vorobev, W.H.Trzaska, E.Vardaci, A.di Nitto, S.V.Khlebnikov, I.Harka, A.Andreyev Study of Binary Processes in the Reactions of 36Ar + 144, 154Sm and 68Zn + 112Sn Leading to the Formation of Neutron-Deficient Compound 180, 190Hg Nuclei NUCLEAR REACTIONS 144Sm(36Ar, X)180Hg, E=158 MeV; 154Sm(36Ar, X)190Hg, E=181 MeV; 112Sn(68Zn, X)180Hg, E=300 MeV; measured reaction products; deduced fission fragment mass yields, energy distributions; deduced asymmetric and symmetric fission.
doi: 10.3103/S1062873821100105
2020KU24 Bull.Rus.Acad.Sci.Phys. 84, 1001 (2020) D.Kumar, E.M.Kozulin, M.Cheralu, G.N.Knyazheva, I.M.Itkis, M.G.Itkis, K.V.Novikov, A.A.Bogachev, N.I.Kozulina, I.N.Diatlov, I.V.Pchelintsev, I.V.Vorobiev, T.Banerjee, Y.S.Mukhamejanov, A.N.Pan, V.V.Saiko, P.P.Singh, R.N.Sahoo, A.N.Andreyev, D.M.Filipescu, M.Maiti, R.Prajapat, R.Kumar Study of Mass-Asymmetric Fission of 180, 190Hg Formed in the 36Ar + 144, 154Sm Reactions NUCLEAR REACTIONS 36Ar(144Sm, X), (154Sm, X)180Hg/190Hg, E= 158, 181, 222 MeV; measured reaction products; deduced asymmetric fission of 180,190Hg with the most probable masses of light and heavy fragments of 79 and 101 amu, and 84 and 106 amu, respectively. Two components manifesting the symmetric and asymmetric fission modes are observed in the kinetic energy distributions.
doi: 10.3103/S1062873820080213
2020NO05 Bull.Rus.Acad.Sci.Phys. 84, 495 (2020) K.V.Novikov, E.M.Kozulin, G.N.Knyazheva, I.M.Itkis, A.V.Karpov, M.G.Itkis, I.N.Diatlov, M.Cheralu, B.Gall, Z.Asfari, N.I.Kozulina, D.Kumar, I.V.Pchelintsev, V.N.Loginov, A.E.Bondarchenko, P.P.Singh, I.V.Vorobiev, S.Heinz, W.H.Trzaska, E.Vardaci, N.Tortorelli, C.Borcea, I.Harca Formation and Decay of the Composite System Z = 120 in Reactions with Heavy Ions at Energies Near the Coulomb Barrier
doi: 10.3103/S1062873820040206
2020NO09 Phys.Rev. C 102, 044605 (2020) K.V.Novikov, E.M.Kozulin, G.N.Knyazheva, I.M.Itkis, M.G.Itkis, A.A.Bogachev, I.N.Diatlov, M.Cheralu, D.Kumar, N.I.Kozulina, A.N.Pan, I.V.Pchelintsev, I.V.Vorobiev, W.H.Trzaska, S.Heinz, H.M.Devaraja, B.Lommel, E.Vardaci, S.Spinosa, A.Di Nitto, A.Pulcini, S.V.Khlebnikov, P.P.Singh, Ru.N.Sahoo, B.Gall, Z.Asfari, C.Borcea, I.Harca, D.M.Filipescu Investigation of fusion probabilities in the reactions with 52, 54Cr, 64Ni, and 68Zn ions leading to the formation of Z = 120 superheavy composite systems NUCLEAR REACTIONS 248Cm(52Cr, X)300120*, E=290, 304-MeV; 248Cm(54Cr, X)302120*, E=296 MeV; 232Th(68Zn, X)300120*, E=335 MeV; measured binary reaction products in coincidence by the double-arm time-of-flight spectrometer CORSET, the first two reactions using 248Cm target at the U-400 cyclotron facility of FLNR-Dubna, and the experiment with 232Th target at the University of Jyvaskyla K-130 cyclotron facility; deduced yield and TKE matrices of binary fragments as functions of mass and energy, capture cross sections as a function of effective fissility parameter, excitation energy of primary fragments as function of fragment mass, contributions of symmetric fragments to the capture cross sections, fusion probability as function of the mean fissility parameter, and production σ for the formation of Z=120 superheavy nucleus (SHN). 238U(64Ni, X)302120*, E=335 MeV; compared results of this experiment, reported in 2010Ko16, at Jyvaskyla with the data in the present experiments. 248Cm(54Cr, X) reaction determined to be the most favorable for the production of Z=120 element.
doi: 10.1103/PhysRevC.102.044605
2020VO07 Bull.Rus.Acad.Sci.Phys. 84, 351 (2020) A.A.Voinov, V.K.Utyonkov, Yu.Ts.Oganessian, F.Sh.Abdullin, A.N.Polyakov, Yu.S.Tsyganov, I.V.Shirokovsky, R.N.Sagaidak, V.G.Subbotin, S.N.Dmitriev, M.G.Itkis, M.V.Shumeiko, N.D.Kovrizhnykh, A.V.Sabelnikov, G.K.Vostokin Synthesizing and Studying Superheavy Nuclei 294Ts and 294Og
doi: 10.3103/S1062873820040358
2019KO03 Phys.Rev. C 99, 014616 (2019) E.M.Kozulin, G.N.Knyazheva, T.K.Ghosh, A.Sen, I.M.Itkis, M.G.Itkis, K.V.Novikov, I.N.Diatlov, I.V.Pchelintsev, C.Bhattacharya, S.Bhattacharya, K.Banerjee, E.O.Saveleva, I.V.Vorobiev Fission and quasifission of the composite system Z=114 formed in heavy-ion reactions at energies near the Coulomb barrier NUCLEAR REACTIONS 232Th(52Cr, X)284Fl*, E=265, 288, 302, 320 MeV; 198Pt(86Kr, X)284Fl*, E=465 MeV; measured mass and energy distributions of binary fragments detected in coincidence using the double-arm time-of-flight spectrometer CORSET at FLNR-JINR-Dubna facility. 232Th(52Cr, X)284Fl*, E=265, 288, 302, 320 MeV; 198Pt(86Kr, X)284Fl*, E=465 MeV; 238U(48Ti, X)286Fl*, E=247, 258, 271 MeV; 244Pu(48Ca, X)292Fl*, E=226-244 MeV; 238U(48Ca, X)286Cn*, E=228-238 MeV; deduced mass and energy distributions of binary fragments, contribution from symmetric fragments to cross section, capture σ, cross sections of symmetric fragments, TKE distributions. Data for 48Ca and 48Ti beams are from authors' previous works 2014Ko45 and 2016Ko35. 284Fl; calculated potential energy surface as a function of elongation and mass asymmetry.
doi: 10.1103/PhysRevC.99.014616
2019VA16 J.Phys.(London) G46, 103002 (2019) E.Vardaci, M.G.Itkis, I.M.Itkis, G.Knyazheva, E.M.Kozulin Fission and quasifission toward the superheavy mass region NUCLEAR REACTIONS 208Pb, 209Bi(48Ca, n), (50Ti, n), (54Cr, n), (58Fe, n), (64Ni, n), (62Ni, n), (70Zn, n), (76Ge, X), (82Se, X), (226Ra, X), (208Pb, X), (210Po, X), (222Rn, X), (232Th, X), (238U, X), (244Pu, X), (248Cm, X), (249Bk, X), (249Cf, X), E ∼ 15 MeV; analyzed available data; calculated σ.
doi: 10.1088/1361-6471/ab3118
2018BR13 Phys.Rev. C 98, 024317 (2018) N.T.Brewer, V.K.Utyonkov, K.P.Rykaczewski, Yu.Ts.Oganessian, F.Sh.Abdullin, R.A.Boll, D.J.Dean, S.N.Dmitriev, J.G.Ezold, L.K.Felker, R.K.Grzywacz, M.G.Itkis, N.D.Kovrizhnykh, D.C.McInturff, K.Miernik, G.D.Owen, A.N.Polyakov, A.G.Popeko, J.B.Roberto, A.V.Sabelnikov, R.N.Sagaidak, I.V.Shirokovsky, M.V.Shumeiko, N.J.Sims, E.H.Smith, V.G.Subbotin, A.M.Sukhov, A.I.Svirikhin, Yu.S.Tsyganov, S.M.Van Cleve, A.A.Voinov, G.K.Vostokin, C.S.White, J.H.Hamilton, M.A.Stoyer Search for the heaviest atomic nuclei among the products from reactions of mixed-Cf with a 48Ca beam NUCLEAR REACTIONS 249,250,251,252Cf(48Ca, 2n), (48Ca, 3n), (48Ca, 4n), (48Ca, 5n), E*=33-50 MeV; calculated evaporation residual cross sections using from five models for analyzing reactions. 249,250,251Cf(48Ca, xn)294Og, E=252, 258 MeV; Yb(48Ca, xn)216Th/217Th/218Th/219Th/220Th, E=252, 258 MeV; 206Pb(48Ca, 2n)252No, E=252, 258 MeV; measured Eα, Iα and (implants)α correlations, using Dubna Gas Filled Recoil Separator (DGFRS) for recoil separation and double-sided silicon strip detectors for α detection at JINR. Reviewed earlier experiments from 2002 to 2012 for the detection of 294Og nuclide. 295,296Og; predicted production σ, half-life and Eα for the decay of 296Og; discussed future prospects for production of these two nuclides. RADIOACTIVITY 294Og, 290Lv, 218,219Th, 214,215Ra(α); 286Fl(SF); measured Eα, Q(α) and T1/2. 294,296Og(α); comparison of experimental values for Q(α) and T1/2 for 294Og with theoretical predictions for 294Og and 296Og.
doi: 10.1103/PhysRevC.98.024317
2018GI09 Bull.Rus.Acad.Sci.Phys. 82, 716 (2018) K.B.Gikal, E.M.Kozulin, I.M.Itkis, M.G.Itkis, G.N.Knyazheva, K.V.Novikov, A.N.Pan Searching for the Superasymmetric Fission Mode of 248Cf, 254Fm, and 260No in Reactions 22Ne + 232Th, 238U; 16O + 232Th, 238U NUCLEAR REACTIONS 232Th, 238U(16O, f), (22Ne, f), E*=40-45 MeV; measured fission products; deduced fission fragments mass distribution, TKE for 248Cf, 254Fm, 258,262No and bimodal fission for 260No* at E*=41 MeV with both fission fragments close to double-magic 132Sn in the symmetric case.
doi: 10.3103/S1062873818060114
2018PA30 Bull.Rus.Acad.Sci.Phys. 82, 721 (2018) A.N.Pan, E.M.Kozulin, I.M.Itkis, M.G.Itkis, G.N.Knyazheva, K.B.Gikal, K.V.Novikov, T.N.Kvochkina, N.T.Burtebayev, K.V.Covalchuk Proton-Induced Fission of 232Th at Low and Intermediate Energies NUCLEAR REACTIONS 232Th(p, f), E=7-55 MeV; measured fission fragments mass distribution (yield), energy (TKE) at K-130 cyclotron at Jyvaskyla with fission fragments ToF measured by CORSET spectrometer at 13-55 MeV and at U-150M cyclotron at Almaty at 7, 10, 13 MeV; deduced symmetric and asymmetric fission modes in mass-energy distributions at all energies with yield of symmetric products falling with increasing proton energy, deduced indication of superasymmetric fission mode associated with increased yield of fragments with masses in region of A≈70; compared with published mass distributions from 235U, 239Pu, 242Am, 245Cm, 249Cf(n, f), E=thermal.
doi: 10.3103/S1062873818060229
2018UT02 Phys.Rev. C 97, 014320 (2018) V.K.Utyonkov, N.T.Brewer, Yu.Ts.Oganessian, K.P.Rykaczewski, F.Sh.Abdullin, S.N.Dmitriev, R.K.Grzywacz, M.G.Itkis, K.Miernik, A.N.Polyakov, J.B.Roberto, R.N.Sagaidak, I.V.Shirokovsky, M.V.Shumeiko, Yu.S.Tsyganov, A.A.Voinov, V.G.Subbotin, A.M.Sukhov, A.V.Karpov, A.G.Popeko, A.V.Sabelnikov, A.I.Svirikhin, G.K.Vostokin, J.H.Hamilton, N.D.Kovrizhnykh, L.Schlattauer, M.A.Stoyer, Z.Gan, W.X.Huang, L.Ma Neutron-deficient superheavy nuclei obtained in the 240Pu + 48Ca reaction NUCLEAR REACTIONS 240Pu(48Ca, 3n), (48Ca, 4n), E=250 MeV; measured evaporation residues (ER), α, and SF fragments, ER-α, α-α, and ER-SF correlated events, reaction σ using Dubna gas-filled recoil separator (DGFRS) at the U-400 cyclotron facility of Flerov Laboratory of Nuclear Reactions(FLNR), JINR; deduced three ER-α-SF correlated decay chains decaying from 285Fl to 265Rf, one ER-α-SF decay chain, and 25 short ER-SF decay chains, super-heavy nuclides (SHN). Systematics of production σ for Cf, Cm and Am isotopes in 248Cm, 249Cf(136Xe, xn), 248Cm(86Kr, xn), and 240Pu, 243Am, 248Cm(48Ca, xn) reactions. 240,244mAm, 242mAm, 237,239,241mPu, 238,241,243,244,245,246mAm, 287Fl, 282,283Cn, 279Ds; possible production of mostly the SF activities. RADIOACTIVITY 285Fl, 281Cn, 277Ds, 273Hs, 269Sg(α); 265Rf(SF)[from 240Pu(48Ca, 3n), E=250 MeV]; measured Eα, ESF, T1/2 from three correlated decay chains; deduced average decay properties, possible indication of decays through different energy levels. 284Fl(SF)[from 240Pu(48Ca, 4n), E=250 MeV]; deduced possible three ER-SF correlated decay chains and estimated half-life.
doi: 10.1103/PhysRevC.97.014320
2017KO39 Phys.Rev. C 96, 064621 (2017) E.M.Kozulin, V.I.Zagrebaev, G.N.Knyazheva, I.M.Itkis, K.V.Novikov, M.G.Itkis, S.N.Dmitriev, I.M.Harca, A.E.Bondarchenko, A.V.Karpov, V.V.Saiko, E.Vardaci Inverse quasifission in the reactions 156, 160Gd + 186W NUCLEAR REACTIONS 186W(156Gd, X), E=878 MeV; 186W(160Gd, X), E=860, 935 MeV; measured Mass, energy, yields, σ(TKEL), and angular distributions of primary binary fragments using the double-arm time-of-flight spectrometer CORSET at the U400 cyclotron of FLNR-JINR-Dubna facility; calculated potential energy surfaces. Relevance to production of new neutron-enriched heavy nuclei.
doi: 10.1103/PhysRevC.96.064621
2016GI07 Phys.Atomic Nuclei 79, 1367 (2016) K.B.Gikal, E.M.Kozulin, A.A.Bogachev, N.T.Burtebaev, A.V.Edomskiy, I.M.Itkis, M.G.Itkis, G.N.Knyazhev, K.V.Kovalchuk, T.N.Kvochkina, E.Piasecki, V.A.Rubchenya, S.K.Sahiev, W.H.Trzaska, E.Vardaci Proton induced fission of 232Th at intermediate energies NUCLEAR REACTIONS 232Th(p, f), E=7, 10, 13, 20, 40, 55 MeV; measured fission fragments mass, energy using two ToF arms of the CORSET spectrometer, Ep, Ip using four Si surface-barrier detectors, En, In(θ) using 8 liquid NE213, n(fragment)-coin; deduced mass-energy distribution of the fission fragments, TKE, yield, pre-neutron mass distribution of fission fragments, pre-equilibrium neutron multiplicity, pres-scission neutron multiplicity (from compound nucleus), σ, division of total σ between symmetric and asymmetric fission models, σ(θ, En).
doi: 10.1134/S1063778816090040
2016KO35 Phys.Rev. C 94, 054613 (2016) E.M.Kozulin, G.N.Knyazheva, K.V.Novikov, I.M.Itkis, M.G.Itkis, S.N.Dmitriev, Yu.Ts.Oganessian, A.A.Bogachev, N.I.Kozulina, I.Harca, W.H.Trzaska, T.K.Ghosh Fission and quasifission of composite systems with Z = 108 - 120: Transition from heavy-ion reactions involving S and Ca to Ti and Ni ions NUCLEAR REACTIONS 238U(48Ti, X), E=247, 258, 271 MeV; measured mass and energy distributions of binary fragments detected in coincidence using the double-arm time-of-flight spectrometer CORSET at FLNR-JINR-Dubna facility; deduced fusion probabilities, capture and CN cross sections for fissionlike fragments. Comparison with cross sections measured earlier for 238U(36S, X), (64Ni, X), 154Sm, 238U, 244Pu, 248Cm(48Ca, X) reactions at energies near the Coulomb barrier at the same laboratory.
doi: 10.1103/PhysRevC.94.054613
2015IT01 Nucl.Phys. A944, 204 (2015) M.G.Itkis, E.Vardaci, I.M.Itkis, G.N.Knyazheva, E.M.Kozulin Fusion and fission of heavy and superheavy nuclei (experiment) COMPILATION 238U(36S, x), (48Ca, x), E not given;248Cm(48Ca, x), E not given; compiled, analyzed quasiffission mass distribution width, asymmetry. 186W(64Ni, x), E not given;206Pb(44Ca, x), E not given;232Th(48Ca, x), E not given;238U(36S, x), (48Ca, x), (64Ni, x), E not given;244Pu(48Ca, x), (58Fe, x), E not given;248Cm(48Ca, x), E not given; compiled, analyzed mass distribution, drift of dinuclear system; deduced average quasifission time vs charge product of target and projectile. NUCLEAR REACTIONS 56Ti, 58Fe, 86Kr, 136Xe(208Pb, x), E ≈ Coulomb barrier;232Th, 238U, 244Pu, 248Cm(48Ca, x), E≈ Coulomb barrier; compiled energy, mass distribution.
doi: 10.1016/j.nuclphysa.2015.09.007
2015UT02 Phys.Rev. C 92, 034609 (2015) V.K.Utyonkov, N.T.Brewer, Yu.Ts.Oganessian, K.P.Rykaczewski, F.Sh.Abdullin, S.N.Dmitriev, R.K.Grzywacz, M.G.Itkis, K.Miernik, A.N.Polyakov, J.B.Roberto, R.N.Sagaidak, I.V.Shirokovsky, M.V.Shumeiko, Yu.S.Tsyganov, A.A.Voinov, V.G.Subbotin, A.M.Sukhov, A.V.Sabelnikov, G.K.Vostokin, J.H.Hamilton, M.A.Stoyer, S.Y.Strauss Experiments on the synthesis of superheavy nuclei 284Fl and 285Fl in the 239, 240Pu + 48Ca reactions NUCLEAR REACTIONS 240Pu(48Ca, 3n)285Fl, E=245, 250 MeV; 240Pu(48Ca, 4n)284Fl, E=245, 250 MeV; 239Pu(48Ca, 3n)284Fl, E=245 MeV; measured evaporation residues (ER), α, and SF fragments, ER-α and ER-SF correlated events, σ using DGFRS separator at U400 cyclotron facility of FLNR-JINR. Decay studies. Super heavy nuclei. Systematics of cross sections. RADIOACTIVITY 284Fl(SF), 285Fl(α)[from 239,240Pu(48Ca, xn), E=245, 250 MeV]; 281Cn, 277Ds, 273Hs, 269Sg(α), 265Rf[from 285Fl α decay chain]; measured EER, Eα, ESF, T1/2; deduced Q(α). Systematics of SF half-lives and α-decay energies.
doi: 10.1103/PhysRevC.92.034609
2014KO02 Phys.Rev. C 89, 014614 (2014) E.M.Kozulin, G.N.Knyazheva, S.N.Dmitriev, I.M.Itkis, M.G.Itkis, T.A.Loktev, K.V.Novikov, A.N.Baranov, W.H.Trzaska, E.Vardaci, S.Heinz, O.Beliuskina, S.V.Khlebnikov Shell effects in damped collisions of 88Sr with 176Yb at the Coulomb barrier energy NUCLEAR REACTIONS 176Yb(88Sr, X), E=435 MeV; measured reaction products, (fragment)(fragment)-coin, total kinetic energy (TKE) distributions, double differential cross sections, and excitation energies of fragments using two-arm time-of-flight spectrometer CORSET at K130 cyclotron facility in Jyvaskyla; deduced evidence for low-energy multinucleon transfer reactions as a possible pathway for producing new neutron-rich isotopes in the superheavy element region.
doi: 10.1103/PhysRevC.89.014614
2014KO45 Phys.Rev. C 90, 054608 (2014); Pub.Note Phys.Rev. C 90, 069901 (2014) E.M.Kozulin, G.N.Knyazheva, I.M.Itkis, M.G.Itkis, A.A.Bogachev, E.V.Chernysheva, L.Krupa, F.Hanappe, O.Dorvaux, L.Stuttge, W.H.Trzaska, C.Schmitt, G.Chubarian Fusion-fission and quasifission of superheavy systems with Z = 110-116 formed in 48Ca-induced reactions NUCLEAR REACTIONS 232Th(48Ca, X)280Ds*, E=244 MeV; 238U(48Ca, X)286Cn*, E=228-238 MeV; 244Pu(48Ca, X)292Fl*, E=226-244 MeV; 248Cm(48Ca, X)296Lv*, E=233-240 MeV; measured binary reaction products in coincidence mode, time-of-flight, capture σ(E) using the double-arm time-of-flight spectrometer CORSET at the U-400 cyclotron of the FLNR-JINR facility; deduced fragment mass and energy distributions, most probable fragment masses and total kinetic energies (TKEs) and their dispersions in dependence on the interaction energies and ion-target combinations, fusion probabilities PCN. 283,284,285,286Cn, 289,290,291,292Fl, 293,294,295,296Lv; estimated lower limits for fission barriers.Comparison with available experimental results and calculations.
doi: 10.1103/PhysRevC.90.054608
2013OG01 Phys.Rev. C 87, 014302 (2013) Yu.Ts.Oganessian, F.Sh.Abdullin, S.N.Dmitriev, J.M.Gostic, J.H.Hamilton, R.A.Henderson, M.G.Itkis, K.J.Moody, A.N.Polyakov, A.V.Ramayya, J.B.Roberto, K.P.Rykaczewski, R.N.Sagaidak, D.A.Shaughnessy, I.V.Shirokovsky, M.A.Stoyer, N.J.Stoyer, V.G.Subbotin, A.M.Sukhov, Yu.S.Tsyganov, V.K.Utyonkov, A.A.Voinov, G.K.Vostokin Investigation of the 243Am + 48Ca reaction products previously observed in the experiments on elements 113, 115, and 117 NUCLEAR REACTIONS 243Am(48Ca, xn)287Mc/288Mc/289Mc, E=239.8-253.8 MeV; measured evaporation residues (ER), α, and SF fragments, ER-α and ER-SF correlated events, σ at U400 cyclotron facility of FLNR, JINR. 249Bk(48Ca, xn)293Ts/294Ts; 237Np(48Ca, 3n)282Nh; analyzed data. RADIOACTIVITY 287,288,289Mc, 283,284,285Nh, 279,280Rg, 275,276Mt, 271,272Bh(α); 267,268Db, 281Rg(SF); measured T1/2. 293,297Ts, 290Mc, 282,286Nh, 278,282Rg, 274,278Mt, 270,274Bh(α); 266,270Db(SF); analyzed and compared previous half-life data.
doi: 10.1103/PhysRevC.87.014302
2013OG03 Phys.Rev. C 87, 034605 (2013) Yu.Ts.Oganessian, V.K.Utyonkov, F.Sh.Abdullin, S.N.Dmitriev, R.Graeger, R.A.Henderson, M.G.Itkis, Yu.V.Lobanov, A.N.Mezentsev, K.J.Moody, S.L.Nelson, A.N.Polyakov, M.A.Ryabinin, R.N.Sagaidak, D.A.Shaughnessy, I.V.Shirokovsky, M.A.Stoyer, N.J.Stoyer, V.G.Subbotin, K.Subotic, A.M.Sukhov, Yu.S.Tsyganov, A.Turler, A.A.Voinov, G.K.Vostokin, P.A.Wilk, A.Yakushev Synthesis and study of decay properties of the doubly magic nucleus 270Hs in the 226Ra + 48Ca reaction NUCLEAR REACTIONS 226Ra(48Ca, 4n)270Hs, E=229, 234, 241 MeV; measured reaction products, σ(E), ER-α correlations using U400 cyclotron and Dubna gas-filled recoil separator at FLNR, JINR facility. Relatively high production cross section due to high fission barrier arising from nuclear shell effects. RADIOACTIVITY 270Hs(α)[from 226Ra(48Ca, 4n), E=229, 234, 241 MeV]; 266Sg(SF)[from 270Hs α decay]; measured Eα, evaporation residues-α correlations, T1/2. Comparison with previous studies. Systematics of α decay and SF half-lives for N=148-172 No, Rf, Sg, and Hs nuclei.
doi: 10.1103/PhysRevC.87.034605
2013OG04 Phys.Rev. C 87, 054621 (2013) Yu.Ts.Oganessian, F.Sh.Abdullin, C.Alexander, J.Binder, R.A.Boll, S.N.Dmitriev, J.Ezold, K.Felker, J.M.Gostic, R.K.Grzywacz, J.H.Hamilton, R.A.Henderson, M.G.Itkis, K.Miernik, D.Miller, K.J.Moody, A.N.Polyakov, A.V.Ramayya, J.B.Roberto, M.A.Ryabinin, K.P.Rykaczewski, R.N.Sagaidak, D.A.Shaughnessy, I.V.Shirokovsky, M.V.Shumeiko, M.A.Stoyer, N.J.Stoyer, V.G.Subbotin, A.M.Sukhov, Yu.S.Tsyganov, V.K.Utyonkov, A.A.Voinov, G.K.Vostokin Experimental studies of the 249Bk+48Ca reaction including decay properties and excitation function for isotopes of element 117, and discovery of the new isotope 277Mt NUCLEAR REACTIONS 249Bk(48Ca, 3n), (48Ca, 4n), E=243.7, 255.7, 259.8 MeV; measured σ(E) for production of 293,294Ts using DGFRS separator at FLNR, JINR facility. Comparison with theoretical calculations. RADIOACTIVITY 293,294Ts, 289,290Mc, 285,286Nh, 281,282Rg, 278Mt, 274Bh(α)[from α decay chains of 293Ts and 294Ts formed in 249Bk(48Ca, 3n), (48Ca, 4n), E=243.7, 255.7, 259.8 MeV]; measured Eα, Iα, half-lives. 270Db, 277Mt, 281Rg(SF); measured decay energy, half-lives. 281Rg(α), (SF); measured α/SF branching ratio. 277Mt; identified new isotope. Systematics of Q(α), SF- and α-decay half-lives for isotopes in Z=104-117, N=150-177 regions.
doi: 10.1103/PhysRevC.87.054621
2012KO34 Phys.Rev. C 86, 044611 (2012) E.M.Kozulin, E.Vardaci, G.N.Knyazheva, A.A.Bogachev, S.N.Dmitriev, I.M.Itkis, M.G.Itkis, A.G.Knyazev, T.A.Loktev, K.V.Novikov, E.A.Razinkov, O.V.Rudakov, S.V.Smirnov, W.Trzaska, V.I.Zagrebaev Mass distributions of the system 136Xe + 208Pb at laboratory energies around the Coulomb barrier: A candidate reaction for the production of neutron-rich nuclei at N=126 NUCLEAR REACTIONS 208Pb(136Xe, X), E=700, 870, 1020 MeV; measured particle spectra, (particle)(particle)-coin using CORSET spectrometer at Flerov lab, fragment mass-energy distribution, velocity and TKEL distributions, fragment mass yield, σ(E, θ). Comparison with theoretical calculations. RADIOACTIVITY 212Bi, 210,212,214,216,218Po, 220,222Rn, 224Ra(α); measured α spectra.
doi: 10.1103/PhysRevC.86.044611
2012OG02 Phys.Rev.Lett. 108, 022502 (2012) Yu.Ts.Oganessian, F.Sh.Abdullin, S.N.Dmitriev, J.M.Gostic, J.H.Hamilton, R.A.Henderson, M.G.Itkis, K.J.Moody, A.N.Polyakov, A.V.Ramayya, J.B.Roberto, K.P.Rykaczewski, R.N.Sagaidak, D.A.Shaughnessy, I.V.Shirokovsky, M.A.Stoyer, V.G.Subbotin, A.M.Sukhov, Yu.S.Tsyganov, V.K.Utyonkov, A.A.Voinov, G.K.Vostokin New Insights into the 243Am+48Ca Reaction Products Previously Observed in the Experiments on Elements 113, 115, and 117 NUCLEAR REACTIONS 243Am(48Ca, 3n)288Mc, E=240 MeV; 243Am, 249Bk(48Ca, X)289Mc, E not given; measured reaction products. 291Mc, 291Mc, 297Ts; deduced σ. Comparison with other data. RADIOACTIVITY 288Mc, 284Nh, 280Rg, 276Mt, 272Bh(α), 268Db(SF); 289Mc, 285Nh, 281Rg(α); 293Ts, 289Mc, 285Nh, 281Rg(α); measured decay products, Eα, Iα; deduced decay chains, strong support for the elements of 113 and 115.
doi: 10.1103/PhysRevLett.108.022502
2012OG06 Phys.Rev.Lett. 109, 162501 (2012) Yu.Ts.Oganessian, F.Sh.Abdullin, C.Alexander, J.Binder, R.A.Boll, S.N.Dmitriev, J.Ezold, K.Felker, J.M.Gostic, R.K.Grzywacz, J.H.Hamilton, R.A.Henderson, M.G.Itkis, K.Miernik, D.Miller, K.J.Moody, A.N.Polyakov, A.V.Ramayya, J.B.Roberto, M.A.Ryabinin, K.P.Rykaczewski, R.N.Sagaidak, D.A.Shaughnessy, I.V.Shirokovsky, M.V.Shumeiko, M.A.Stoyer, N.J.Stoyer, V.G.Subbotin, A.M.Sukhov, Yu.S.Tsyganov, V.K.Utyonkov, A.A.Voinov, G.K.Vostokin Production and Decay of the Heaviest Nuclei 293, 294117 and 294118 NUCLEAR REACTIONS 249Bk(48Ca, X)293Ts/294Ts, E=247, 252 MeV; 249Cf(48Ca, 3n)294Og, E=245, 251 MeV; measured reaction products, Eα, Iα; deduced average σ, T1/2. Comparison with available data. RADIOACTIVITY 294Og, 293,294Ts, 290Lv, 289,290Mc(α), 286Fl(α), (SF), 285,286Nh(α), 282Cn(SF), 281Rg(SF), 282Rg(α), 278Mt, 274Bh(α), 270Db(SF); measured decay products, Eα, Iα; deduced discovery z=117 element, T1/2, decay branch, Q-values. Comparison with available data.
doi: 10.1103/PhysRevLett.109.162501
2011HA63 J.Phys.:Conf.Ser. 312, 082026 (2011) J.H.Hamilton, Yu.Ts.Oganessian, F.Sh.Abdullin, P.D.Bailey, D.Benker, M.E.Bennett, S.N.Dmitriev, J.Ezold, R.A.Henderson, M.G.Itkis, Yu.V.Lobanov, A.N.Mezentsev, K.J.Moody, S.L.Nelson, A.N.Polyakov, C.E.Porter, A.V.Ramayya, F.Riley, J.B.Roberto, M.A.Ryabinin, K.P.Rykaczewski, R.N.Sagaidak, D.A.Shaughnessy, I.V.Shirokovsky, M.A.Stoyer, V.G.Subbotin, R.Sudowe, A.M.Sukhov, Tu.S.Tsyganov, V.K.Utyonkov, A.A.Voinov, G.K.Vostokin, P.A.Wilk Synthesis of the New Element with Z=117 NUCLEAR REACTIONS 249Bk(48Ca, 4n)293Ts, E=252 MeV;249Bk(48Ca, 3n)294Ts, E=252 MeV; measured Eα, α-decay chains, ER, fission fragments; deduced new element 117, T1/2.
doi: 10.1088/1742-6596/312/4/082026
2011IT06 Phys.Rev. C 83, 064613 (2011) I.M.Itkis, E.M.Kozulin, M.G.Itkis, G.N.Knyazheva, A.A.Bogachev, E.V.Chernysheva, L.Krupa, Yu.Ts.Oganessian, V.I.Zagrebaev, A.Ya.Rusanov, F.Goennenwein, O.Dorvaux, L.Stuttge, F.Hanappe, E.Vardaci, E.de Goes Brennand Fission and quasifission modes in heavy-ion-induced reactions leading to the formation of Hs* NUCLEAR REACTIONS 249Cf(22Ne, X)271Hs*, E=102, 127 MeV; 248Cm(26Mg, X)274Hs*, E=129, 143, 160 MeV; 238U(36S, X)274Hs*, E=173, 179, 186, 198 MeV; 208Pb(58Fe, X)266Hs*, E=289, 305, 315, 324 MeV; measured binary reaction product spectra in coincidence mode using TOF; deduced yields, mass-energy and TKE distributions of binary products. Comparison of measured fragment mass-energy distributions with those expected for fission processes of excited compound nucleus in the framework of the liquid drop model and empirical systematics.
doi: 10.1103/PhysRevC.83.064613
2011OG04 Phys.Rev. C 83, 054315 (2011) Yu.Ts.Oganessian, F.Sh.Abdullin, P.D.Bailey, D.E.Benker, M.E.Bennett, S.N.Dmitriev, J.G.Ezold, J.H.Hamilton, R.A.Henderson, M.G.Itkis, Yu.V.Lobanov, A.N.Mezentsev, K.J.Moody, S.L.Nelson, A.N.Polyakov, C.E.Porter, A.V.Ramayya, F.D.Riley, J.B.Roberto, M.A.Ryabinin, K.P.Rykaczewski, R.N.Sagaidak, D.A.Shaughnessy, I.V.Shirokovsky, M.A.Stoyer, V.G.Subbotin, R.Sudowe, A.M.Sukhov, R.Taylor, Yu.S.Tsyganov, V.K.Utyonkov, A.A.Voinov, G.K.Vostokin, P.A.Wilk Eleven new heaviest isotopes of elements Z = 105 to Z = 117 identified among the products of 249Bk+48Ca reactions RADIOACTIVITY 293,294Ts(α)[from 249Bk(48Ca, xn), E=252 MeV]; 274Bh, 278Mt, 282Rg, 286Nh, 290Mc(α) [from α decay chain of 294Ts]; 281Rg, 285Nh, 289Mc(α)[from α decay chain of 293Ts]; 270Db(SF), (α), (EC)[from α decay of 274Bh]; 281Rg(SF)[from α decay of 285Nh]; measured Eα, half-lives and β decay energies of residues; deduced Q(α). Systematics of α decay half-lives, Q(α) values and β+, EC half-lives of Z=106-118, N=150-175, A=260-295 isotopes. NUCLEAR REACTIONS 249Bk(48Ca, xn)293Ts/294Ts, E=252 MeV; measured production cross sections.
doi: 10.1103/PhysRevC.83.054315
2010IT02 Nucl.Phys. A834, 374c (2010) M.G.Itkis, I.M.Itkis, G.N.Knyazheva, E.M.Kozulin Fusion-fission and quasifission of superheavy systems in heavy-ion induced reactions NUCLEAR REACTIONS 248Cm(26Mg, X)274Hs, E*=28-64 MeV; 238U(36S, X)274Hs, E*=30-57 MeV; 208Pb(58Fe, X)266Hs, E*=33, 48 MeV; measured σ, fragment energy spectra (TKE), yields using CORSET spectrometer; deduced reaction mechanism features.
doi: 10.1016/j.nuclphysa.2010.01.043
2010KO16 Phys.Lett. B 686, 227 (2010) E.M.Kozulin, G.N.Knyazheva, I.M.Itkis, M.G.Itkis, A.A.Bogachev, L.Krupa, T.A.Loktev, S.V.Smirnov, V.I.Zagrebaev, J.Aysto, W.H.Trzaska, V.A.Rubchenya, E.Vardaci, A.M.Stefanini, M.Cinausero, L.Corradi, E.Fioretto, P.Mason, G.F.Prete, R.Silvestri, S.Beghini, G.Montagnoli, F.Scarlassara, F.Hanappe, S.V.Khlebnikov, J.Kliman, A.Brondi, A.Di Nitto, R.Moro, N.Gelli, S.Szilner Investigation of the reaction 64Ni + 238U being an option of synthesizing element 120 NUCLEAR REACTIONS 238U(48Ca, X), E=220-260 MeV; 238U(64Ni, X), E=320-385 MeV; measured fragment yields and energy distributions using CORSET time-of-flight spectrometer; deduced σ; analyzed reaction mechanism features using Viola systematics. 244Pu(58Fe, X), E=328 MeV; analyzed data. Discussed superheavy element formation.
doi: 10.1016/j.physletb.2010.02.041
2010OG01 Phys.Rev.Lett. 104, 142502 (2010) Yu.Ts.Oganessian, F.Sh.Abdullin, P.D.Bailey, D.E.Benker, M.E.Bennett, S.N.Dmitriev, J.G.Ezold, J.H.Hamilton, R.A.Henderson, M.G.Itkis, Yu.V.Lobanov, A.N.Mezentsev, K.J.Moody, S.L.Nelson, A.N.Polyakov, C.E.Porter, A.V.Ramayya, F.D.Riley, J.B.Roberto, M.A.Ryabinin, K.P.Rykaczewski, R.N.Sagaidak, D.A.Shaughnessy, I.V.Shirokovsky, M.A.Stoyer, V.G.Subbotin, R.Sudowe, A.M.Sukhov, Yu.S.Tsyganov, V.K.Utyonkov, A.A.Voinov, G.K.Vostokin, P.A.Wilk Synthesis of a New Element with Atomic Number Z = 117 NUCLEAR REACTIONS 249Bk(48Ca, 4n), E=252 MeV; 249Bk(48Ca, 3n) , E=247 MeV;measured Eα, Iα, α-α correlations. 293,294Ts; deduced σ, decay chains, T1/2. RADIOACTIVITY 293,294Ts, 289,290Mc, 285,286Nh, 282Rg, 278Mt, 274Bh(α); measured Eα, Iα, and half-lives. 270Db, 281Rg(SF); measured TKE, and T1/2.
doi: 10.1103/PhysRevLett.104.142502
2008EI03 Angew.Chem. 47, 3262 (2008) R.Eichler, N.V.Aksenov, A.V.Belozerov, G.A.Bozhikov, V.I.Chepigin, S.N.Dmitriev, R.Dressler, H.W.Gaggeler, A.V.Gorshkov, M.G.Itkis, F.Haenssler, A.Laube, V.Y.Lebedev, O.N.Malyshev, Y.T.Oganessian, O.V.Petrushkin, D.Piguet, A.G.Popeko, P.Rasmussen, S.V.Shishkin, A.A.Serov, A.V.Shutov, A.I.Svirikhin, E.E.Tereshatov, G.K.Vostokin, M.Wegrzecki, A.V.Yeremin Thermochemical and Physical Properties of Element 112 RADIOACTIVITY 287Fl, 283Cn(α), 279Ds(SF) [from 242Pu(48Ca, 3n)297Fl, E=270 MeV]; 185Hg(α) [from 142Nd(48Ca, 5n)185Hg, E=270 MeV]; 219Rn(α) [from 242Pu(48Ca, X)219Rn, E=270 MeV]; measured decay products, Eα, Iα; deduced standard sublimation enthalpy, linear relationships for various compound classes on various chromatographic materials, volatility for element 112.
doi: 10.1002/anie.200705019
2008IT08 Int.J.Mod.Phys. E17, 2208 (2008) M.G.Itkis, G.N.Knyazheva, E.Kozulin Fusion-fission of superheavy nuclei and clustering phenomena
doi: 10.1142/S0218301308011355
2008KN01 Phys.Part. and Nucl.Lett. 5, 21 (2008); Pisma Zh.Fiz.Elem.Chast.Atom.Yadra No.1 [143], 40 (2008) G.N.Knyazheva, M.G.Itkis, S.V.Khlebnikov, E.M.Kozulin, V.G.Lyapin, V.A.Rubchenya, W.Trzaska The influence of the entrance channel on the formation and decay of the compound nucleus 250No NUCLEAR REACTIONS 206Pb(44Ca, X), E=217, 227 MeV; 186W(64Ni, X), E=300, 311 MeV; measured mass-energy distributions of binary fragments, σ(θ) for fissionlike fragments. 250No; deduced influence of mass assymetry of the entrance channel in compound nucleus formation.
doi: 10.1134/S1547477108010044
2008PR03 Nucl.Phys. A802, 45 (2008) E.V.Prokhorova, A.A.Bogachev, M.G.Itkis, I.M.Itkis, G.N.Knyazheva, N.A.Kondratiev, E.M.Kozulin, L.Krupa, Yu.Ts.Oganessian, I.V.Pokrovsky, V.V.Pashkevich, A.Ya.Rusanov The fusion-fission and quasi-fission processes in the reaction 48Ca + 208Pb at energies near the Coulomb barrier NUCLEAR REACTIONS 208Pb(48Ca, X), E=206?242 MeV; measured fragment yields, mass and energy distributions and capture-fission σ. Discussed reaction mechanism in terms of fusion?fission and quasi-fission.
doi: 10.1016/j.nuclphysa.2008.01.016
2008RU06 Phys.Atomic Nuclei 71, 956 (2008); Yad.Fiz. 71, 984 (2008) A.Ya.Rusanov, M.G.Itkis, N.A.Kondratiev, V.V.Pashkevich, I.V.Pokrovsky, V.S.Salamatin, G.G.Chubarian Investigation of the 208Pb(18O, f) fission reaction: Mass-energy distributions of fission fragments and their correlation with the gamma-ray multiplicity NUCLEAR REACTIONS 208Pb(18O, F), E=78.0 - 198.5 MeV; measured fission fragment mass and energy distributions, Eγ, Inullfrom fission fragment distributions. Compared results to model calculations.
doi: 10.1134/S1063778808060021
2007EI02 Nucl.Phys. A787, 373c (2007) R.Eichler, N.V.Aksenov, A.V.Belozerov, G.A.Bozhikov, V.I.Chepigin, R.Dressler, S.N.Dmitriev, H.W.Gaggeler, V.A.Gorshkov, F.Haenssler, M.G.Itkis, V.Ya.Lebedev, A.Laube, O.N.Malyshev, Yu.Ts.Oganessian, O.V.Petruschkin, D.Piguet, P.Rasmussen, S.V.Shishkin, A.V.Shutov, A.I.Svirikhin, E.E.Tereshatov, G.K.Vostokin, M.Wegrzecki, A.V.Yeremin Confirmation of the Decay of 283112 and First Indication for Hg-like Behavior of Element 112 NUCLEAR REACTIONS 238U(48Ca, 3n), 242Pu(48Ca, 3n), E=237 MeV; measured super heavy element yield, Eα, Iα; analyzed production σ. NUCLEAR STRUCTURE 279Ds, 283Cn, 287Fl; analyzed superheavy element production and decay data. RADIOACTIVITY 283Cn(α); 287Fl(α), (SF); measured Eα, E(fragment), T1/2.
doi: 10.1016/j.nuclphysa.2006.12.058
2007EI03 Nature(London) 447, 72 (2007) R.Eichler, N.V.Aksenov, A.V.Belozerov, G.A.Bozhikov, V.I.Chepigin, S.N.Dmitriev, R.Dressler, H.W.Gaggeler, V.A.Gorshkov, F.Haenssler, M.G.Itkis, A.Laube, V.Ya.Lebedev, O.N.Malyshev, Yu.Ts.Oganessian, O.V.Petrushkin, D.Piguet, P.Rasmussen, S.V.Shishkin, A.V.Shutov, A.I.Svirikhin, E.E.Tereshatov, G.K.Vostokin, M.Wegrzecki, A.V.Yeremin Chemical characterization of element 112 RADIOACTIVITY 287Fl, 283Cn(α), 279Ds(SF) [from 242Pu(48Ca, 3n)297Fl, E=270 MeV]; 185Hg(α) [from 142Nd(48Ca, 5n)185Hg, E=270 MeV]; 219Rn(α) [from 242Pu(48Ca, X)219Rn, E=270 MeV]; measured decay products, Eα, Iα; deduced Q-values, T1/2, element 112 chemical identification.
doi: 10.1038/nature05761
2007IT03 Int.J.Mod.Phys. E16, 957 (2007) M.G.Itkis, A.A.Bogachev, I.M.Itkis, G.N.Knyazheva, N.A.Kondratiev, E.M.Kozulin, L.Krupa, Yu.Ts.Oganessian, I.V.Pokrovsky, E.V.Prokhorova, A.Ya.Rusanov, V.M.Voskresenski, V.A.Rubchenya, W.H.Trzaska The process of fusion-fission of superheavy nuclei NUCLEAR REACTIONS 208Pb(48Ca, X), (50Ti, X), (56Fe, X), (86Kr, X), E not given; 208Pb, 238U, 244Pu, 248Cm(48Ca, X), E not given; measured fragment mass distributions, yields and cross sections.
doi: 10.1142/S0218301307006423
2007IT04 Nucl.Phys. A787, 150c (2007) M.G.Itkis, A.A.Bogachev, I.M.Itkis, J.Kliman, G.N.Knyazheva, N.A.Kondratiev, E.M.Kozulin, L.Krupa, Yu.Ts.Oganessian, I.V.Pokrovsky, E.V.Prokhorova, A.Ya.Rusanov The processes of fusion-fission and quasi-fission of superheavy nuclei NUCLEAR REACTIONS 208Pb(26Mg, F), (48Ca, F), (50Ti, F), (58Fe, F), (64Ni, F), E not given; measured capture, fusion-fission σ; 238U, 244Pu, 248Cm(48Ca, F), E not given; measured fission fragments energy and mass distributions. 144,154Sm, 168Er, 174Yb, 208Pb, 238U, 244Pu, 248Cm(48Ca, F), E not given; 208Pb(58Fe, F), E not given; 248Cm(26Mg, F), E not given; measured fission fragments energy and mass distributions, quasi-fission, capture σ. 246Cm(48Ca, F), E not given; 244Pu(50Ti, F), E not given; measured capture, fusion-fission σ. 232Th, 244Pu, 248Cm(58Fe, F), E not given; 242Pu(64Ni, F), E not given; measured fission fragments energy and mass distributions. 208Pb, 238U, 244Pu, 248Cm(58Fe, F), E not given; 208Pb(86Kr, F), E not given; measured capture, fusion-fission σ. 206Pb(44Ca, F), E=218 MeV; 186W(64Ni, F), E=300 MeV; measured fission fragments mass distributions, average energy. Super heavy element synthesis, fission and fusion reaction mechanisms discussed.
doi: 10.1016/j.nuclphysa.2006.12.026
2007KN02 Phys.Rev. C 75, 064602 (2007) G.N.Knyazheva, E.M.Kozulin, R.N.Sagaidak, A.Yu.Chizhov, M.G.Itkis, N.A.Kondratiev, V.M.Voskressensky, A.M.Stefanini, B.R.Behera, L.Corradi, E.Fioretto, A.Gadea, A.Latina, S.Szilner, M.Trotta, S.Beghini, G.Montagnoli, F.Scarlassara, F.Haas, N.Rowley, P.R.S.Gomes, A.Szanto de Toledo Quasifission processes in 40, 48Ca+144, 154Sm reactions NUCLEAR REACTIONS 144Sm(40Ca, F), 140 MeV; 154Sm(40Ca, F), E=141 MeV; 154Sm(48Ca, F), E=137 MeV; 186W(16O, F), E=69.9 MeV; measured σ, mass, energy, and angular distribution of fission fragments. Deduced fission and quasifission cross sections.
doi: 10.1103/PhysRevC.75.064602
2007OG02 Phys.Rev. C 76, 011601 (2007) Yu.Ts.Oganessian, V.K.Utyonkov, Yu.V.Lobanov, F.Sh.Abdullin, A.N.Polyakov, R.N.Sagaidak, I.V.Shirokovsky, Yu.S.Tsyganov, A.A.Voinov, G.G.Gulbekian, S.L.Bogomolov, B.N.Gikal, A.N.Mezentsev, V.G.Subbotin, A.M.Sukhov, K.Subotic, V.I.Zagrebaev, G.K.Vostokin, M.G.Itkis, R.A.Henderson, J.M.Kenneally, J.H.Landrum, K.J.Moody, D.A.Shaughnessy, M.A.Stoyer, N.J.Stoyer, P.A.Wilk Synthesis of the isotope 282113 in the 237Np+48Ca fusion reaction NUCLEAR REACTIONS 237Np(48Ca, 3n)282Nh, E=244 MeV; measured Eα, production cross section and T1/2.
doi: 10.1103/PhysRevC.76.011601
2007RU15 Phys.Atomic Nuclei 70, 1669 (2007); Yad.Fiz. 70, 1715 (2007) A.Ya.Rusanov, M.G.Itkis, N.A.Kondratiev, I.V.Pokrovsky, V.S.Salamatin, G.G.Chubarian Investigation of the reaction 208Pb(18O, f): Folding angular distributions of fission fragments and gamma-ray multiplicity NUCLEAR REACTIONS 208Pb(18O, F), E=78.0-198.5 MeV; measured fission fragment energy, momentum, angular distributions, and total γ-ray multiplicities.
doi: 10.1134/S1063778807100018
2007RU16 Phys.Atomic Nuclei 70, 1679 (2007); Yad.Fiz. 70, 1724 (2007) A.Ya.Rusanov, G.D.Adeev, M.G.Itkis, A.V.Karpov, P.N.Nadtochy, V.V.Pashkevich, I.V.Pokrovsky, V.S.Salamatin, G.G.Chubarian Investigation of the reaction 208Pb(18O, f): Fragment spins and phenomenological analysis of the angular anisotropy of fission fragments NUCLEAR REACTIONS 208Pb(18O, F), E=78.0-198.5 MeV; measured Eγ, Iγ, average multiplicity from fission fragments. Deduced total spins of fission fragments.
doi: 10.1134/S106377880710002X
2007TR06 Nucl.Phys. A787, 134c (2007) M.Trotta, A.M.Stefanini, S.Beghini, B.R.Behera, L.Corradi, E.Fioretto, A.Gadea, M.G.Itkis, G.N.Knyazheva, N.A.Kondratiev, E.M.Kozulin, N.Marginean, P.Mason, G.Montagnoli, I.V.Pokrovsky, R.N.Sagaidak, F.Scarlassara, R.Silvestri, S.Szilner An overview of near-barrier fusion studies with stable beams NUCLEAR REACTIONS 90,94,96Zr(40Ca, X), (48Ca, X), E(cm)≈100-200 MeV; analyzed fusion σ(E). 154Sm(48Ca, X), E=182, 202 MeV; analyzed fission like fragment mass distribution, σ(θ); 186W(16O, X), E=170-192 MeV; analyzed quasi fission σ. 144Sm(48Ca, X), E=182, 202 MeV; analyzed σ(θ) for fission like fragments. Sub-barrier enhancement, hindrance, barrier distribution and fusion vs quasi-fission discussed. Coupled channel model.
doi: 10.1016/j.nuclphysa.2006.12.024
2006IT05 Phys.Lett. B 640, 32 (2006) I.M.Itkis, A.A.Bogachev, A.Yu.Chizhov, D.M.Gorodisskiy, M.G.Itkis, G.N.Kniajeva, N.A.Kondratiev, E.M.Kozulin, L.Krupa, S.I.Mulgin, I.V.Pokrovsky, E.V.Prokhorova, A.Ya.Rusanov, V.M.Voskressenski, S.V.Zhdanov What can one learn about lithium breakup from the fission reaction of 232Th(6Li, f) at energies around the Coulomb barrier? NUCLEAR REACTIONS 232Th(6Li, F), E=28.5-62.5 MeV; measured fission fragments energy and mass distributions, folding angle distributions; deduced incomplete and complete fusion contributions.
doi: 10.1016/j.physletb.2006.07.026
2006IT09 Phys.Lett. B 640, 23 (2006) I.M.Itkis, A.A.Bogachev, A.Yu.Chizhov, D.M.Gorodisskiy, M.G.Itkis, G.N.Knyazheva, N.A.Kondratiev, E.M.Kozulin, L.Krupa, S.I.Mulgin, I.V.Pokrovsky, E .V.Prokhorova, A.Ya.Rusanov, V.M.Voskressenski, S.V.Zhdanov What can one learn about lithium breakup from the fission reaction of 232Th(6Li, f) at energies around the Coulomb barrier NUCLEAR REACTIONS 232Th(6Li, f), E=28.5-62.5 MeV; measured products; deduced yields. Data were imported from EXFOR entry O1442.
doi: 10.1016/j.physletb.2006.07.026
2006OG05 Phys.Rev. C 74, 044602 (2006) Yu.Ts.Oganessian, V.K.Utyonkov, Yu.V.Lobanov, F.Sh.Abdullin, A.N.Polyakov, R.N.Sagaidak, I.V.Shirokovsky, Yu.S.Tsyganov, A.A.Voinov, G.G.Gulbekian, S.L.Bogomolov, B.N.Gikal, A.N.Mezentsev, S.Iliev, V.G.Subbotin, A.M.Sukhov, K.Subotic, V.I.Zagrebaev, G.K.Vostokin, M.G.Itkis, K.J.Moody, J.B.Patin, D.A.Shaughnessy, M.A.Stoyer, N.J.Stoyer, P.A.Wilk, J.M.Kenneally, J.H.Landrum, J.F.Wild, R.W.Lougheed Synthesis of the isotopes of elements 118 and 116 in the 249Cf and 245Cm + 48Ca fusion reactions NUCLEAR REACTIONS 245Cm(48Ca, 2n), (48Ca, 3n), E=249, 255 MeV; 249Cf(48Ca, 3n), E=251 MeV; measured Eα, αα-coin, fission fragment spectra following residual nucleus decay; deduced σ. RADIOACTIVITY 294Og, 290,291Lv, 286,287Fl, 283Cn, 279Ds, 275Hs, 271Sg(α) [from 245Cm, 249Cf(48Ca, xn) and subsequent decay]; measured Eα, T1/2. 282Cn, 267Rf(SF) [from α-decay of 286Rf and 271Sg]; measured fission fragment spectra, T1/2.
doi: 10.1103/PhysRevC.74.044602
2006ZA03 Phys.Rev. C 73, 031602 (2006) V.I.Zagrebaev, Yu.Ts.Oganessian, M.G.Itkis, W.Greiner Superheavy nuclei and quasi-atoms produced in collisions of transuranium ions NUCLEAR REACTIONS 250Cf(232Th, X), (248Cm, X), E(cm)=800 MeV; calculated fragment mass distributions. 238U, 248Cm(238U, X), E ≈ 800 MeV/nucleon; calculated fragments isotopic yields. Realistic dynamical model, production of superheavy nuclei discussed.
doi: 10.1103/PhysRevC.73.031602
2005DM03 Mendeleev Commun. 15, 1 (2005) S.N.Dmitriev, Y.T.Oganessyan, V.K.Utyonkov, S.V.Shishkin, A.V.Yeremin, Y.V.Lobanov, Y.S.Tsyganov, V.I.Chepygin, E.A.Sokol, G.K.Vostokin, N.V.Aksenov, M.Hussonnois, M.G.Itkis, H.W.Gaggeler, D.Schumann, H.Bruchertseifer, R.Eichler, D.A.Shaughnessy, P.A.Wilk, J.M.Kenneally, M.A.Stoyer, J.F.Wild Chemical identification of dubnium as a decay product of element 115 produced in the reaction 48Ca + 243Am NUCLEAR REACTIONS 243Am(48Ca, 3n), E=247 MeV; measured super heavy element yield, Eα, Iα; analyzed production σ. Radiochemical experiment, identification of the long-lived decay product dubnium. NUCLEAR STRUCTURE 268Db, 272Bh, 276Mt, 280Rg, 284Nh, 288Mc; analyzed superheavy element production and decay data. RADIOACTIVITY 268Db(SF); 272Bh, 276Mt, 280Rg, 284Nh, 288Mc(α); measured Eα, E(fragment), T1/2.
doi: 10.1070/MC2005v015n01ABEH002077
2005GO46 Phys.Rev. C 72, 064612 (2005) M.S.Golovkov, L.V.Grigorenko, A.S.Fomichev, S.A.Krupko, Yu.Ts.Oganessian, A.M.Rodin, S.I.Sidorchuk, R.S.Slepnev, S.V.Stepantsov, G.M.Ter-Akopian, R.Wolski, M.G.Itkis, A.S.Denikin, A.A.Bogatchev, N.A.Kondratiev, E.M.Kozulin, A.A.Korsheninnikov, E.Yu.Nikolskii, P.Roussel-Chomaz, W.Mittig, R.Palit, V.Bouchat, V.Kinnard, T.Materna, F.Hanappe, O.Dorvaux, L.Stuttge, C.Angulo, V.Lapoux, R.Raabe, L.Nalpas, A.A.Yukhimchuk, V.V.Perevozchikov, Yu.I.Vinogradov, S.K.Grishechkin, S.V.Zlatoustovskiy Correlation studies of the 5H spectrum NUCLEAR REACTIONS 3H(t, p), E=57.7 MeV; measured decay fragments energy and angular correlations, missing mass spectrum. 5H deduced ground-state energy, J, π, width, excited states features.
doi: 10.1103/PhysRevC.72.064612
2005OG02 Phys.Rev. C 72, 034611 (2005) Yu.Ts.Oganessian, V.K.Utyonkov, S.N.Dmitriev, Yu.V.Lobanov, M.G.Itkis, A.N.Polyakov, Yu.S.Tsyganov, A.N.Mezentsev, A.V.Yeremin, A.A.Voinov, E.A.Sokol, G.G.Gulbekian, S.L.Bogomolov, S.Iliev, V.G.Subbotin, A.M.Sukhov, G.V.Buklanov, S.V.Shishkin, V.I.Chepigin, G.K.Vostokin, N.V.Aksenov, M.Hussonnois, K.Subotic, V.I.Zagrebaev, K.J.Moody, J.B.Patin, J.F.Wild, M.A.Stoyer, N.J.Stoyer, D.A.Shaughnessy, J.M.Kenneally, P.A.Wilk, R.W.Lougheed, H.W.Gaggeler, D.Schumann, H.Bruchertseifer, R.Eichler Synthesis of elements 115 and 113 in the reaction 243Am + 48Ca NUCLEAR REACTIONS 243Am(48Ca, 3n), (48Ca, 4n), E=248, 253 MeV; measured delayed Eα, αα-coin; deduced σ. RADIOACTIVITY 287,288Mc, 283,284Nh, 279,280Rg, 275,276Mt, 272Bh(α) [from 243Am(48Ca, xn) and subsequent decay]; measured Eα, T1/2; deduced Qα. 267,268Db(SF); measured T1/2.
doi: 10.1103/PhysRevC.72.034611
2005OG03 Eur.Phys.J. A 25, Supplement 1, 589 (2005) Yu.Ts.Oganessian, V.K.Utyonkov, Yu.V.Lobanov, F.Sh.Abdullin, A.N.Polyakov, I.V.Shirokovsky, Yu.S.Tsyganov, G.G.Gulbekian, S.L.Bogomolov, B.N.Gikal, A.N.Mezentsev, S.Iliev, V.G.Subbotin, A.M.Sukhov, A.A.Voinov, G.V.Buklanov, K.Subotic, V.I.Zagrebaev, M.G.Itkis, J.B.Patin, K.J.Moody, J.F.Wild, M.A.Stoyer, N.J.Stoyer, D.A.Shaughnessy, J.M.Kenneally, P.A.Wilk, R.W.Lougheed New elements from Dubna NUCLEAR REACTIONS 238U(48Ca, 3n), (48Ca, 4n), 233U, 242Pu(48Ca, 2n), (48Ca, 3n), (48Ca, 4n), E ≈ 230-250 MeV; measured σ. RADIOACTIVITY 294Og, 290,291,292,293Lv, 287,288,289Fl, 285Cn, 275Hs(α); 286Fl, 283Cn, 279Ds, 271Sg(α), (SF);282,284Cn, 281Ds, 267Rf(SF); measured Eα, T1/2, branching ratios.
doi: 10.1140/epjad/i2005-06-134-9
2005SC32 Radiochim.Acta 93, 727 (2005) D.Schumann, H.Bruchertseifer, R.Eichler, B.Eichler, H.W.Gaggeler, S.N.Dmitriev, Yu.Ts.Oganessian, V.P.Utyonkov, S.V.Shishkin, A.V.Yeremin, Yu.V.Lobanov, Y.S.Tsyganov, V.I.Chepygin, E.A.Sokol, G.K.Vostokin, N.V.Aksenov, M.Hussonnois, M.G.Itkis Chemical procedure applied for the identification of Rf/Db produced in the 48Ca + 243Am reaction NUCLEAR REACTIONS 243Am(48Ca, xn), E=247 MeV; measured Eγ, fission fragment spectra following chemical separation; deduced Z=115 production.
doi: 10.1524/ract.2005.93.12.727
2005TR14 Eur.Phys.J. A 25, Supplement 1, 615 (2005) M.Trotta, A.M.Stefanini, S.Beghini, B.R.Behera, A.Yu.Chizhov, L.Corradi, S.Courtin, E.Fioretto, A.Gadea, P.R.S.Gomes, F.Haas, I.M.Itkis, M.G.Itkis, G.N.Kniajeva, N.A.Kondratiev, E.M.Kozulin, A.Latina, G.Montagnoli, I.V.Pokrovsky, N.Rowley, R.N.Sagaidak, F.Scarlassara, A.Szanto de Toledo, S.Szilner, V.M.Voskressensky, Y.W.Wu Fusion hindrance and quasi-fission in 48Ca induced reactions: Implications for super-heavy element production NUCLEAR REACTIONS 154Sm(48Ca, X), E(cm) ≈ 120-200 MeV; 186W(16O, X), E(cm) ≈ 60-100 MeV; measured capture, evaporation, fission σ; deduced fusion hindrance features. 144,154Sm(48Ca, X), 154Sm(40Ca, X), E* ≈ 50 MeV; measured fission fragment kinetic energy and mass distributions; deduced mass-asymmetry and shell effects.
doi: 10.1140/epjad/i2005-06-084-2
2004AC04 Eur.Phys.J. A 20, 151 (2004) D.Ackermann, S.Antalic, M.Axiotis, D.Bazzacco, S.Beghini, G.Berek, L.Corradi, G.De Angelis, E.Farnea, A.Gadea, F.P.Hessberger, S.Hofmann, M.G.Itkis, G.N.Kniajeva, E.M.Kozulin, A.Latina, T.Martinez, R.Menegazzo, G.Montagnoli, G.Munzenberg, Yu.Ts.Oganessian, C.Rossi Alvarez, M.Ruan, R.N.Sagaidak, F.Scarlassara, A.M.Stefanini, S.Szilner, M.Trotta, C.Ur Reaction mechanism studies using the CN/ER spin distribution
doi: 10.1140/epja/i2002-10341-0
2004GO54 Phys.Rev.Lett. 93, 262501 (2004) M.S.Golovkov, L.V.Grigorenko, A.S.Fomichev, S.A.Krupko, Yu.Ts.Oganessian, A.M.Rodin, S.I.Sidorchuk, R.S.Slepnev, S.V.Stepantsov, G.M.Ter-Akopian, R.Wolski, M.G.Itkis, A.A.Bogatchev, N.A.Kondratiev, E.M.Kozulin, A.A.Korsheninnikov, E.Yu.Nikolskii, P.Roussel-Chomaz, W.Mittig, R.Palit, V.Bouchat, V.Kinnard, T.Materna, F.Hanappe, O.Dorvaux, L.Stuttge, C.Angulo, V.Lapoux, R.Raabe, L.Nalpas, A.A.Yukhimchuk, V.V.Perevozchikov, Yu.I.Vinogradov, S.K.Grishechkin, S.V.Zlatoustovsky Observation of Excited States in 5H NUCLEAR REACTIONS 3H(t, p), E=58 MeV; measured En, Ep, missing mass spectrum following residual nucleus decay. 5H deduced levels, J, π.
doi: 10.1103/PhysRevLett.93.262501
2004IT05 Nucl.Phys. A734, 136 (2004) M.G.Itkis, J.Aysto, S.Beghini, A.A.Bogachev, L.Corradi, O.Dorvaux, A.Gadea, G.Giardina, F.Hanappe, I.M.Itkis, M.Jandel, J.Kliman, S.V.Khlebnikov, G.N.Kniajeva, N.A.Kondratiev, E.M.Kozulin, L.Krupa, A.Latina, T.Materna, G.Montagnoli, Yu.Ts.Oganessian, I.V.Pokrovsky, E.V.Prokhorova, N.Rowley, V.A.Rubchenya, A.Ya.Rusanov, R.N.Sagaidak, F.Scarlassara, A.M.Stefanini, L.Stuttge, S.Szilner, M.Trotta, W.H.Trzaska, D.N.Vakhtin, A.M.Vinodkumar, V.M.Voskresensky, V.I.Zagrebaev Shell effects in fission and quasi-fission of heavy and superheavy nuclei NUCLEAR REACTIONS 204Pb(12C, X), 144,154Sm, 168Er, 208Pb, 238U, 244Pu, 248Cm(48Ca, X), 208Pb, 244Pu, 248Cm(58Fe, X), 186W, 242Pu(64Ni, X), E* ≈ 30-50 MeV; calculated fission fragment kinetic energy and mass distributions, neutron and γ multiplicities; deduced shell effects in fission and quasi-fission processes.
doi: 10.1016/j.nuclphysa.2004.01.022
2004IT07 Nucl.Phys. A734, E29 (2004) M.G.Itkis, B.Benoit, A.A.Bogachev, D.M.Gorodisskiy, F.Hanappe, I.M.Itkis, M.Jandel, J.Kliman, N.A.Kondratiev, E.M.Kozulin, L.Krupa, T.Materna, Yu.Ts.Oganessian, I.V.Pokrovsky, E.V.Prokhorova, A.Ya.Rusanov, L.Stuttge, V.M.Voskressenski Energy balance in fission and quasifission of 256No NUCLEAR REACTIONS 208Pb(48Ca, X), E=230 MeV; measured fission fragments mass distribution, kinetic and excitation energy distributions, pre- and post-scission neutron and γ-ray multiplicities; deduced energy distribution features.
doi: 10.1016/j.nuclphysa.2004.03.012
2004IT12 Acta Phys.Hung.N.S. 19, 9 (2004) M.G.Itkis, S.Beghini, A.A.Bogatchev, L.Corradi, O.Dorvaux, F.Hanappe, A.Gadea, G.Giardina, I.M.Itkis, M.Jandel, J.Kliman, G.N.Kniajeva, N.A.Kondratiev, I.V.Korzyukov, E.M.Kozulin, L.Krupa, L.Latina, T.Materna, G.Montagnoli, Yu.Ts.Oganessian, I.V.Pokrovsky, E.V.Prokhorova, N.Rowley, A.Ya.Rusanov, F.Scarlassara, A.M.Stefanini, L.Stuttge, S.Szilner, M.Trotta, V.M.Voskressenski Shell Effects in Fusion-Fission of Heavy and Superheavy Nuclei NUCLEAR REACTIONS 208Pb, 238U, 244Pu, 248Cm(48Ca, X), E* ≈ 33 MeV; 232Th, 244Pu, 248Cm(58Fe, X), E ≈ 328 MeV; 168Er(48Ca, X), E=180-204 MeV; 204Pb(12C, X), E=73 MeV; analyzed fragments energy and mass distributions; deduced shell effects.
doi: 10.1556/APH.19.2004.1-2.3
2004KN02 Nucl.Phys. A734, E25 (2004) G.N.Kniajeva, L.Krupa, A.A.Bogachev, G.G.Chubarian, O.Dorvaux, I.M.Itkis, M.G.Itkis, J.Kliman, S.Khlebnikov, N.A.Kondratiev, E.Kozulin, V.Lyapin, T.Materna, I.V.Pokrovsky, V.A.Rubchenya, W.H.Trzaska, D.Vakhtin, V.M.Voskressenski Neutron and gamma-ray emission in the proton induced fission of 238U and 242Pu NUCLEAR REACTIONS 242Pu, 238U(p, F), E=13, 20, 55 MeV; measured En, Eγ, prescission and postscission neutron and γ-ray multiplicities, fission fragment mass distributions, kinetic energy spectra.
doi: 10.1016/j.nuclphysa.2004.03.011
2004MA01 Nucl.Instrum.Methods Phys.Res. A516, 529 (2004) O.N.Malyshev, A.V.Yeremin, A.G.Popeko, A.V.Belozerov, M.L.Chelnokov, V.I.Chepigin, V.A.Gorshkov, S.Hofmann, M.G.Itkis, A.P.Kabachenko, Yu.Ts.Oganessian, R.N.Sagaidak, S.Saro, A.V.Shutov, A.I.Svirikhin In-beam separation and mass determination of superheavy nuclei. Part II NUCLEAR REACTIONS 174Yb(48Ca, 5n), (48Ca, 6n), (48Ca, 4nα), E=216 MeV; 198Pt(48Ca, 4n), E=215 MeV; 206,208Pb(48Ca, 2n), E ≈ 218 MeV; 238U(48Ca, 3n), E=234 MeV; measured evaporation residue charge state distributions. Recoil-decay tagging, mass separator.
doi: 10.1016/j.nima.2003.08.118
2004OG02 Eur.Phys.J. A 19, 3 (2004) Yu.Ts.Oganessian, A.V.Yeremin, A.G.Popeko, O.N.Malyshev, A.V.Belozerov, G.V.Buklanov, M.L.Chelnokov, V.I.Chepigin, V.A.Gorshkov, S.Hofmann, M.G.Itkis, A.P.Kabachenko, B.Kindler, G.Munzenberg, R.N.Sagaidak, S.Saro, H.-J.Schott, B.Streicher, A.V.Shutov, A.I.Svirikhin, G.K.Vostokin Second experiment at VASSILISSA separator on the synthesis of the element 112 NUCLEAR REACTIONS 238U(48Ca, 3n), E ≈ 232 MeV; measured production σ. Mass separator, recoil-decay tagging. RADIOACTIVITY 283Cn(SF) [from 238U(48Ca, 3n)]; measured T1/2.
doi: 10.1140/epja/i2003-10113-4
2004OG03 Phys.Rev. C 69, 021601 (2004); Erratum Phys.Rev. C 69, 029902 (2004) Yu.Ts.Oganessian, V.K.Utyonkov, Yu.V.Lobanov, F.Sh.Abdullin, A.N.Polyakov, I.V.Shirokovsky, Yu.S.Tsyganov, G.G.Gulbekian, S.L.Bogomolov, A.N.Mezentsev, S.Iliev, V.G.Subbotin, A.M.Sukhov, A.A.Voinov, G.V.Buklanov, K.Subotic, V.I.Zagrebaev, M.G.Itkis, J.B.Patin, K.J.Moody, J.F.Wild, M.A.Stoyer, N.J.Stoyer, D.A.Shaughnessy, J.M.Kenneally, R.W.Lougheed Experiments on the synthesis of element 115 in the reaction 243Am(48Ca, xn)291-x115 NUCLEAR REACTIONS 243Am(48Ca, 3n), (48Ca, 4n), E=253 MeV; measured (recoil)α-, αα-coin following residual nucleus decay; deduced production σ. RADIOACTIVITY 287,288Mc, 283,284Nh, 279,280Rg, 275,276Mt, 272Bh(α) [from 243Am(48Ca, xn) and subsequent decay]; measured Eα, T1/2; deduced Qα. 267,268Db(SF) [from 243Am(48Ca, xn) and subsequent decay]; measured T1/2. Comparison with model predictions.
doi: 10.1103/PhysRevC.69.021601
2004OG05 Nucl.Phys. A734, 109 (2004) Yu.Ts.Oganessian, V.K.Utyonkov, Yu.V.Lobanov, F.Sh.Abdullin, A.N.Polyakov, I.V.Shirokovsky, Yu.S.Tsyganov, G.G.Gulbekian, S.L.Bogomolov, B.N.Gikal, A.N.Mezentsev, S.Iliev, V.G.Subbotin, A.M.Sukhov, A.A.Voinov, G.V.Buklanov, K.Subotic, V.I.Zagrebaev, M.G.Itkis, J.B.Patin, K.J.Moody, J.F.Wild, M.A.Stoyer, N.J.Stoyer, D.A.Shaughnessy, J.M.Kenneally, R.W.Lougheed Heavy Element Research at Dubna NUCLEAR REACTIONS 245Cm(48Ca, xn), E*=33 MeV; measured Eα, αα-, (fission fragment)α-coin following residual nucleus decay; deduced evidence for 290,291Lv. 244Pu(48Ca, xn), E*=31-53 MeV; measured evaporation residue excitation functions. Studies of other reactions and nuclides reviewed.
doi: 10.1016/j.nuclphysa.2004.01.020
2004OG06 Nucl.Phys. A734, 196 (2004) Yu.Ts.Oganessian, A.V.Yeremin, A.G.Popeko, O.N.Malyshev, A.V.Belozerov, G.Buklanov, M.L.Chelnokov, V.I.Chepigin, V.A.Gorshkov, S.Hofmann, M.G.Itkis, A.P.Kabachenko, B.Kindler, G.Munzenberg, R.N.Sagaidak, S.Saro, H.-J.Schott, B.Streicher, A.V.Shutov, A.I.Svirikhin, G.K.Vostokin In-Flight Separation and Mass Selection of Heavy Evaporation Residues NUCLEAR REACTIONS 238U(48Ca, 3n), E=234 MeV; measured production σ. Mass separator. RADIOACTIVITY 283Cn(SF) [from 238U(48Ca, 3n)]; measured T1/2. Mass-separated source.
doi: 10.1016/j.nuclphysa.2004.01.033
2004OG07 Phys.Rev. C 69, 054607 (2004) Yu.Ts.Oganessian, V.K.Utyonkov, Yu.V.Lobanov, F.Sh.Abdullin, A.N.Polyakov, I.V.Shirokovsky, Yu.S.Tsyganov, G.G.Gulbekian, S.L.Bogomolov, B.N.Gikal, A.N.Mezentsev, S.Iliev, V.G.Subbotin, A.M.Sukhov, A.A.Voinov, G.V.Buklanov, K.Subotic, V.I.Zagrebaev, M.G.Itkis, J.B.Patin, K.J.Moody, J.F.Wild, M.A.Stoyer, N.J.Stoyer, D.A.Shaughnessy, J.M.Kenneally, R.W.Lougheed Measurements of cross sections for the fusion-evaporation reactions 244Pu(48Ca, xn)292-x114 and 245Cm(48Ca, xn)293-x116 NUCLEAR REACTIONS 244Pu(48Ca, 3n), (48Ca, 4n), (48Ca, 5n), E=243-257 MeV; 245Cm(48Ca, 2n), (48Ca, 3n), E=243 MeV; measured production σ. RADIOACTIVITY 290,291Lv, 286,287,288,289Fl, 283,285Cn(α) [from 244Pu, 245Cm(48Ca, xn) and subsequent decay]; measured Eα, T1/2. 282,284Cn, 279,281Ds(SF); measured fission energy, T1/2.
doi: 10.1103/PhysRevC.69.054607
2004OG10 Prog.Theor.Phys.(Kyoto), Suppl. 154, 406 (2004) Yu.Ts.Oganessian, V.K.Utyonkov, Yu.V.Lobanov, F.Sh.Abdullin, A.N.Polyakov, I.V.Shirokovsky, Yu.S.Tsyganov, G.G.Gulbekian, S.L.Bogomolov, B.N.Gikal, A.N.Mezentsev, S.Iliev, V.G.Subbotin, A.M.Sukhov, A.A.Voinov, G.V.Buklanov, K.Subotic, V.I.Zagrebaev, M.G.Itkis, K.J.Moody, J.F.Wild, M.A.Stoyer, N.J.Stoyer, D.A.Shaughnessy, J.M.Kenneally, J.B.Patin, R.W.Lougheed Synthesis of Superheavy Nuclei in 48Ca-Induced Reactions NUCLEAR REACTIONS 244Pu(48Ca, 3n), (48Ca, 4n), (48Ca, 5n), E* ≈ 30-55 MeV; measured excitation functions. RADIOACTIVITY 290,291Lv, 287,288Mc, 286,287,288,289Fl, 283,284Nh, 283,285Cn, 279,280Rg, 275,276Mt, 272Bh(α); 286Fl, 282,284Cn, 279,281Ds(SF); 294Og(α), (SF); measured Eα, T1/2.
doi: 10.1143/PTPS.154.406
2004OG12 Phys.Rev. C 70, 064609 (2004); Erratum Phys.Rev. C 71, 029902 (2005) Yu.Ts.Oganessian, V.K.Utyonkov, Yu.V.Lobanov, F.Sh.Abdullin, A.N.Polyakov, I.V.Shirokovsky, Yu.S.Tsyganov, G.G.Gulbekian, S.L.Bogomolov, B.N.Gikal, A.N.Mezentsev, S.Iliev, V.G.Subbotin, A.M.Sukhov, A.A.Voinov, G.V.Buklanov, K.Subotic, V.I.Zagrebaev, M.G.Itkis, J.B.Patin, K.J.Moody, J.F.Wild, M.A.Stoyer, N.J.Stoyer, D.A.Shaughnessy, J.M.Kenneally, P.A.Wilk, R.W.Lougheed, R.I.Ilkaev, S.P.Vesnovskii Measurements of cross sections and decay properties of the isotopes of elements 112, 114, and 116 produced in the fusion reactions 233, 238U, 242Pu, and 248Cm + 48Ca NUCLEAR REACTIONS 233,238U, 242Pu, 248Cm(48Ca, 2n), (48Ca, 3n), (48Ca, 4n), (48Ca, 5n), E* ≈ 25-55 MeV; measured excitation functions. Comparison with model predictions. RADIOACTIVITY 271Sg, 275Hs, 279Ds, 282,283,285Cn, 286,287,288,289Fl, 292,293Lv(α); 267Rf, 271Sg, 279,281Ds, 284Cn, 286Fl(SF) [from 233,238U, 242Pu, 248Cm(48Ca, xn) and subsequent decay]; measured Eα, T1/2. Comparison with model predictions.
doi: 10.1103/PhysRevC.70.064609
2004RU04 Nucl.Phys. A734, 253 (2004) V.A.Rubchenya, W.H.Trzaska, I.M.Itkis, M.G.Itkis, J.Kliman, G.N.Kniajeva, N.A.Kondratiev, E.M.Kozulin, L.Krupa, I.V.Pokrovsky, V.M.Voskressensky, F.Hanappe, T.Materna, O.Dorvaux, L.Stuttge, G.Chubarian, S.V.Khlebnikov, D.N.Vakhtin, V.G.Lyapin Fission dynamics in the proton induced fission of heavy nuclei NUCLEAR REACTIONS 242Pu(p, F), E=13, 20, 55 MeV; measured fission fragment mass distributions, kinetic energies, neutron multiplicities, σ(E, θ). Multi-parameter correlation analysis.
doi: 10.1016/j.nuclphysa.2004.01.047
2004TE02 Nucl.Phys. A734, 295 (2004) G.M.Ter-Akopian, Yu.Ts.Oganessian, M.G.Itkis, G.G.Gulbekian, D.D.Bogdanov, A.S.Fomichev, M.S.Golovkov, A.M.Rodin, S.V.Stepantsov, R.Wolski Radioactive ion beam research made in Dubna
doi: 10.1016/j.nuclphysa.2004.01.053
2004YA09 Nucl.Phys. A734, 204 (2004) A.B.Yakushev, I.Zvara, Yu.Ts.Oganessian, A.V.Belozerov, S.N.Dmitriev, B.Eichler, S.Hubener, E.A.Sokol, A.Turler, A.V.Yeremin, G.V.Buklanov, M.L.Chelnokov, V.I.Chepigin, V.A.Gorshkov, A.V.Gulyaev, V.Ya.Lebedev, O.N.Malyshev, A.G.Popeko, S.Soverna, Z.Szeglowski, S.N.Timokhin, S.P.Tretyakova, V.M.Vasko, M.G.Itkis Chemical identification and properties of element 112 NUCLEAR REACTIONS U(48Ca, xn), E ≈ 230 MeV; measured fission fragment spectra following residual nucleus decay; deduced evidence for 283Cn. Chemical properties discussed.
doi: 10.1016/j.nuclphysa.2004.01.035
2003BA82 Yad.Fiz. 66, 1662 (2003); Phys.Atomic Nuclei 66, 1615 (2003) M.K.Baktybaev, A.Duisebaev, B.A.Duisebaev, K.M.Ismailov, M.G.Itkis, K.K.Kadyrzhanov, R.Kalpakchieva, I.V.Kuznetsov, K.A.Kuterbekov, I.N.Kukhtina, S.M.Lukyanov, A.Mukhamedzhan, Yu.E.Penionzhkevich, B.M.Sadykov, Yu.G.Sobolev, V.Yu.Ugryumov Total Reaction Cross Section from the Interaction of 4He Ions with 28Si at 10-30 MeV NUCLEAR REACTIONS 28Si(α, X), E=10-30 MeV; measured reaction σ. Comparison with previous results, model predictions.
doi: 10.1134/1.1611566
2003CH04 Phys.Rev. C 67, 011603 (2003) A.Yu.Chizhov, M.G.Itkis, I.M.Itkis, G.N.Kniajeva, E.M.Kozulin, N.A.Kondratiev, I.V.Pokrovsky, R.N.Sagaidak, V.M.Voskresensky, A.V.Yeremin, L.Corradi, A.Gadea, A.Latina, A.M.Stefanini, S.Szilner, M.Trotta, A.M.Vinodkumar, S.Beghini, G.Montagnoli, F.Scarlassara, A.Ya.Rusanov, F.Hanappe, O.Dorvaux, N.Rowley, L.Stuttge Unexpected entrance-channel effect in the fission of 216Ra NUCLEAR REACTIONS 204Pb(12C, X), E=56-90 MeV; 168Er(48Ca, X), E=180-208 MeV; measured fission fragment energy and mass distributions; deduced contributions from asymmetric fission, role of quasifission process.
doi: 10.1103/PhysRevC.67.011603
2003GO11 Phys.Lett. B 566, 70 (2003) M.S.Golovkov, Yu.Ts.Oganessian, D.D.Bogdanov, A.S.Fomichev, A.M.Rodin, S.I.Sidorchuk, R.S.Slepnev, S.V.Stepantsov, G.M.Ter-Akopian, R.Wolski, V.A.Gorshkov, M.L.Chelnokov, M.G.Itkis, E.M.Kozulin, A.A.Bogatchev, N.A.Kondratiev, I.V.Korzyukov, A.A.Yukhimchuk, V.V.Perevozchikov, Yu.I.Vinogradov, S.K.Grishechkin, A.M.Demin, S.V.Zlatoustovsky, A.V.Kuryakin, S.V.Fil'chagin, R.I.Il'kayev, F.Hanappe, T.Materna, L.Stuttge, A.H.Ninane, A.A.Korsheninnikov, E.Yu.Nikolskii, I.Tanihata, P.Roussel-Chomaz, W.Mittig, N.Alamanos, V.Lapoux, E.C.Pollacco, L.Nalpas Evidences for resonance states in 5H NUCLEAR REACTIONS 3H(t, p), E=57.5 MeV; measured missing mass spectrum. 5H deduced resonance state energy, width.
doi: 10.1016/S0370-2693(03)00803-7
2003IT03 Yad.Fiz. 66, 1154 (2003); Phys.Atomic Nuclei 66, 1118 (2003) M.G.Itkis, S.Beghini, A.A.Bogatchev, L.Corradi, O.Dorvaux, A.Gadea, G.Giardina, A.A.Goverdovski, F.Hanappe, I.M.Itkis, M.Jandel, J.Kliman, G.N.Kniajeva, N.A.Kondratiev, I.V.Korzyukov, E.M.Kozulin, L.Krupa, L.Latina, T.Materna, G.Montagnoli, K.J.Moody, Yu.Ts.Oganessian, I.V.Pokrovsky, V.A.Ponomarenko, E.V.Prokhorova, N.Rowley, A.Ya.Rusanov, F.Scarlassara, A.M.Stefanini, L.Stuttge, S.Szilner, M.Trotta, A.M.Vinodkumar, V.M.Voskressensky Fusion-Fission of Heavy and Superheavy Nuclei NUCLEAR REACTIONS 208Pb, 238U, 244Pu, 248Cm(48Ca, X), E* ≈ 33 MeV; 232Th, 244Pu, 248Cm(58Fe, X), E*=33-53 MeV; 168Er(48Ca, X), E*=30-48 MeV; measured fission fragment kinetic energy and mass distributions. 154Sm, 168Er, 208Pb, 238U, 244Pu, 248Cm(48Ca, X), E* ≈ 33 MeV; measured quasifission σ vs capture σ.
doi: 10.1134/1.1586425
2003MA30 Yad.Fiz. 66, 1204 (2003); Phys.Atomic Nuclei 66, 1168 (2003) T.Materna, C.Schmitt, Y.Aritomo, J.Bartel, B.Benoit, A.A.Bogatchev, E.de Goes Brennand, O.Dorvaux, G.Giardina, F.Hanappe, M.G.Itkis, I.M.Itkis, J.Kliman, G.N.Kniajeva, N.A.Kondratiev, E.M.Kozulin, L.Krupa, Yu.Ts.Oganessian, I.V.Pokrovsky, E.V.Prokhorova, N.Rowley, K.Siwek-Wilczynska, L.Stuttge Tracking Dissipation in Capture Reactions NUCLEAR REACTIONS 98Mo(28Si, X), E=204 MeV; 208Pb(58Ni, X), E=232Th(40Ca, X), E=166 MeV; analyzed pre- and post-scission neutron multiplicities, correlations. 209Bi(18O, F), E*=26 MeV; analyzed fission fragment mass distribution. Backtracking analysis method.
doi: 10.1134/1.1586432
2003PO06 Yad.Fiz. 66, 1234 (2003); Phys.Atomic Nuclei 66, 1198 (2003) I.V.Pokrovsky, A.Yu.Chizhov, M.G.Itkis, I.M.Itkis, G.N.Kniajeva, E.M.Kozulin, N.A.Kondratiev, R.N.Sagaidak, V.M.Voskressensky, L.Corradi, A.M.Stefanini, M.Trotta, A.M.Vinodkumar, S.Beghini, G.Montagnoli, F.Scarlassara, A.Ya.Rusanov, F.Hanappe, O.Dorvaux, N.Rowley, L.Stuttge The Effect of the Entrance Channel on the Fission of 216Ra NUCLEAR REACTIONS 204Pb(12C, X), E=73 MeV; 168Er(48Ca, X), E=194 MeV; measured fission fragment energy and mass distributions; deduced entrance channel effects.
doi: 10.1134/1.1586437
2003PO08 Nucl.Instrum.Methods Phys.Res. A510, 371 (2003) A.G.Popeko, O.N.Malyshev, A.V.Yeremin, A.V.Belozerov, M.L.Chelnokov, V.I.Chepigin, V.A.Gorshkov, M.G.Itkis, A.P.Kabachenko, Yu.Ts.Oganessian, R.N.Sagaidak, A.V.Shutov, A.I.Svirikhin In-beam separation and mass determination of superheavy nuclei. Part I NUCLEAR REACTIONS 164Dy(40Ar, 6n), E not given; 208Pb(40Ar, 2n), E not given; measured fragment yields. 204Pb(48Ca, X), 208Pb(44Ca, X), E not given; measured (recoil)(decay)-coin; deduced evidence for 249,250No. RADIOACTIVITY 249,250No [from 204Pb(48Ca, X), 208Pb(44Ca, X)]; measured T1/2.
doi: 10.1016/S0168-9002(03)01823-0
2003SA21 Phys.Rev. C 68, 014603 (2003) R.N.Sagaidak, G.N.Kniajeva, I.M.Itkis, M.G.Itkis, N.A.Kondratiev, E.M.Kozulin, I.V.Pokrovsky, A.I.Svirikhin, V.M.Voskressensky, A.V.Yeremin, L.Corradi, A.Gadea, A.Latina, A.M.Stefanini, S.Szilner, M.Trotta, A.M.Vinodkumar, S.Beghini, G.Montagnoli, F.Scarlassara, D.Ackermann, F.Hanappe, N.Rowley, L.Stuttge Fusion suppression in mass-asymmetric reactions leading to Ra compound nuclei NUCLEAR REACTIONS 204,206,208Pb(12C, X), 168,170Er(48Ca, X), 197Au(19F, X), 186W(30Si, X), E* ≈ 20-90 MeV; measured fusion and fission excitation functions; deduced role of quasifission processes in fusion supression.
doi: 10.1103/PhysRevC.68.014603
2003SC18 Yad.Fiz. 66, 1199 (2003); Phys.Atomic Nuclei 66, 1163 (2003) R.P.Schmitt, T.Botting, G.G.Chubarian, K.L.Wolf, B.J.Hurst, H.Jabs, M.Hamelin, A.Bacak, Yu.Ts.Oganessian, M.G.Itkis, E.M.Kozulin, N.A.Kondratiev, V.S.Salamatin, I.V.Pokrovsky, F.Hanappe, E.de Goes Brennand, A.Huck, L.Stuttge, E.Liatard, J.Beene, R.Varner, M.Halbert, N.Gan Probing Fission Time Scales with Neutrons and GDR Gamma Rays NUCLEAR REACTIONS 176Yb, 208Pb(16O, F), E=133 MeV; 188Os, 209Bi(α, F), E=104 MeV; measured En, pre-fission neutron multiplicities, GDR associated Eγ, Ig; deduced friction coefficients, fission time scales.
doi: 10.1134/1.1586431
2003SI15 Nucl.Phys. A719, 229c (2003) S.I.Sidorchuk, D.D.Bogdanov, A.S.Fomichev, M.S.Golovkov, Yu.Ts.Oganessian, A.M.Rodin, R.S.Slepnev, S.V.Stepantsov, G.M.Ter-Akopian, R.Wolski, V.A.Gorshkov, M.L.Chelnokov, M.G.Itkis, E.M.Kozulin, A.A.Bogatchev, N.A.Kondratiev, I.V.Korzyukov, A.A.Korsheninnikov, E.Yu.Nikolskii, I.Tanihata Resonance states of hydrogen nuclei 4H and 5H obtained in transfer reactions with exotic beams NUCLEAR REACTIONS 2,3H(t, p), E=58 MeV; 2H(6He, 3He), E=150 MeV; measured particle spectra. 4,5H deduced resonance energies, widths.
doi: 10.1016/S0375-9474(03)00924-2
2003YA22 Radiochim.Acta 91, 433 (2003) A.B.Yakushev, I.Zvara, Yu.Ts.Oganessian, A.V.Belozerov, S.N.Dmitriev, B.Eichler, S.Hubener, E.A.Sokol, A.Turler, A.V.Yeremin, G.V.Buklanov, M.L.Chelnokov, V.I.Chepigin, V.A.Gorshkov, A.V.Gulyaev, V.Ya.Lebedev, O.N.Malyshev, A.G.Popeko, S.Soverna, Z.Szeglowski, S.N.Timokhin, S.P.Tretyakova, V.M.Vasko, M.G.Itkis Chemical identification and properties of element 112 NUCLEAR REACTIONS 238U(48Ca, 3n), E ≈ 233 MeV; measured radiochemical yield; deduced chemical properties.
doi: 10.1524/ract.91.8.433.20010
2003ZA07 Yad.Fiz. 66, 1069 (2003); Phys.Atomic Nuclei 66, 1033 (2003) V.I.Zagrebaev, M.G.Itkis, Yu.Ts.Oganessian Fusion-Fission Dynamics and Perspectives of Future Experiments NUCLEAR REACTIONS 208Pb(16O, X), E(cm) ≈ 65-90 MeV; 208Pb, 238U(48Ca, X), E(cm) ≈ 165-200 MeV; calculated capture σ. 208Pb, 232Th, 238U, 244Pu, 248Cm, 249Cf(48Ca, X), 208Pb(58Fe, X), (64Ni, X), E* ≈ 15-40 MeV; calculated compound nucleus formation probability. 206Pb, 238U(48Ca, xn), E* ≈ 5-50 MeV; calculated σ. Multidimensional fusion-fission driving potential, comparisons with data.
doi: 10.1134/1.1586415
2002IT04 Phys.Rev. C65, 044602 (2002) M.G.Itkis, Yu.Ts.Oganessian, V.I.Zagrebaev Fission Barriers of Superheavy Nuclei NUCLEAR REACTIONS 206,208Pb, 238U(48Ca, X), E* ≈ 5-50 MeV; analyzed capture and evaporation residue σ. 286Cn, 292Fl, 296Lv deduced fission barrier features.
doi: 10.1103/PhysRevC.65.044602
2002IT10 J.Nucl.Radiochem.Sci. 3, No 1, 57 (2002) M.G.Itkis, A.A.Bogatchev, I.M.Itkis, M.Jandel, J.Kliman, G.N.Kniajeva, N.A.Kondratiev, I.V.Korzyukov, E.M.Kozulin, L.Krupa, Yu.Ts.Oganessian, I.V.Pokrovsky, V.A.Ponomarenko, E.V.Prokhorova, A.Ya.Rusanov, V.M.Voskressenski, A.A.Goverdovski, F.Hanappe, T.Materna, N.Rowley, L.Stuttge, G.Giardina, K.J.Moody Fusion-fission of Superheavy Nuclei NUCLEAR REACTIONS 208Pb, 238U, 244Pu, 248Cm(48Ca, X), 248Cm(22Ne, X), (26Mg, X), 208Pb, 244Pu, 248Cm(58Fe, X), 208Pb(86Kr, X), E* ≈ 33 MeV; measured fusion, fission σ, fragment mass distributions.
2002OG09 Eur.Phys.J. A 15, 201 (2002) Y.T.Oganessian, V.K.Utyonkov, Y.V.Lobanov, F.S.Abdullin, A.N.Polyakov, I.V.Shirokovsky, Yu.S.Tsyganov, G.G.Gulbekian, S.L.Bogomolov, B.N.Gikal, A.N.Mezentsev, S.Iliev, V.G.Subbotin, A.M.Sukhov, O.V.Ivanov, G.V.Buklanov, K.Subotic, A.A.Voinov, M.G.Itkis, K.J.Moody, J.F.Wild, N.J.Stoyer, M.A.Stoyer, R.W.Lougheed, C.A.Laue Synthesis of superheavy nuclei in the reactions of 244Pu and 248Cm with 48Ca NUCLEAR REACTIONS 248Cm(48Ca, 4n), E=240 MeV; 244Pu(48Ca, 4n), (48Ca, 3n), E=236 MeV; measured delayed Eα, αα-coin. RADIOACTIVITY 292Lv, 288,289Fl, 284,285Cn, 281Ds(α) [from 248Cm, 244Pu(48Ca, xn) and subsequent decay]; measured Eα, T1/2.
doi: 10.1140/epja/i2001-10254-4
2002OG12 Bull.Rus.Acad.Sci.Phys. 66, 676 (2002) Yu.Ts.Oganessian, G.M.Ter-Akopian, D.D.Bogdanov, M.S.Golovkov, V.A.Gorshkov, A.M.Rodin, S.I.Sidorchuk, R.S.Slepnev, S.V.Stepantsov, A.S.Fomichev, M.L.Chelnokov, M.G.Itkis, E.M.Kozulin, A.A.Bogachev, N.A.Kondratiev, I.V.Korzyukov, R.Wolski, A.A.Yukhimchuk, V.V.Perevozchikov, Yu.I.Vinogradov, S.K.Grishechkin, A.M.Demin, S.V.Zlatoustovsky, A.V.Kuryakin, S.V.Filchagin, R.I.Ilkaev, F.Hanappe, T.Materna, L.Stuttge, A.H.Ninane, A.A.Korsheninnikov, E.Yu.Nikolsky, I.Tanihata, P.Roussel-Chomaz, W.Mittig, N.Alamanos, V.Lapoux, E.C.Pollacco, L.Nalpas Study of Neutron-Ultrarich Hydrogen and Helium Nuclei by Using Reactions of Radioactive Beams on Tritium Target NUCLEAR REACTIONS 2,3H(t, p), 3H(t, d), E=57.5 MeV; measured particle spectra. 4,5H deduced resonance features. Comparison with previous results.
2002ZA01 Phys.Rev. C65, 014607 (2002) V.I.Zagrebaev, Y.Aritomo, M.G.Itkis, Yu.Ts.Oganessian, M.Ohta Synthesis of Superheavy Nuclei: How accurately can we describe it and calculate the cross sections ? NUCLEAR REACTIONS 208Pb(16O, xn), E*=14-45 MeV; 236U(12C, xn), E*=26-65 MeV; 172Yb, 206,208Pb, 244Pu(48Ca, xn), E*=12-60 MeV; 136Xe(86Kr, xn), E*=15-60 MeV; 124Sn(92Zr, xn), (96Zr, xn), E*=10-60 MeV; calculated, analyzed fusion and evaporation residue σ. Implications for synthesis of superheavy elements discussed.
doi: 10.1103/PhysRevC.65.014607
2001CH50 Phys.Rev.Lett. 87, 052701 (2001) G.G.Chubarian, M.G.Itkis, N.A.Kondratiev, E.M.Kozulin, V.V.Pashkevich, I.V.Pokrovsky, A.Ya.Rusanov, V.S.Salamatin, R.P.Schmitt Gamma-Ray Multiplicities and Fission Modes in 208Pb(18O, f) NUCLEAR REACTIONS 208Pb(18O, F), E=78-198 MeV; measured fission fragment yields, fission mode dependence of γ-ray multiplicity. Comparison with model predictions.
doi: 10.1103/PhysRevLett.87.052701
2001IT09 Acta Phys.Hung.N.S. 14, 191 (2001) Fission Process of Superheavy Nuclei NUCLEAR REACTIONS 208Pb, 238U, 244Pu, 248Cm(48Ca, X), 208Pb, 248Cm(58Fe, X), 208Pb(86Kr, X), E* ≈ 25-35 MeV; measured fission fragment mass distributions, kinetic energy, capture and fusion-fission σ.
doi: 10.1556/APH.14.2001.1-4.19
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