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NSR database version of May 24, 2024.

Search: Author = Y.Oganessian

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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
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2023BR07      Nucl.Phys. A1039, 122738 (2023)

N.T.Brewer, E.H.Wang, W.A.Yzaguirre, J.H.Hamilton, K.Nomura, A.V.Ramayya, S.H.Liu, J.K.Hwang, B.M.Musangu, J.M.Eldridge, C.J.Zachary, Y.X.Luo, J.O.Rasmussen, S.J.Zhu, C.Goodin, G.M.Ter-Akopian, A.V.Daniel, Yu.Ts.Oganessian

Octupole deformation in 143, 145, 146Ba

RADIOACTIVITY 252Cf(SF); measured decay products, Eγ, Iγ. 143,145,146Ba; deduced γ-ray energies and relative intensities, partial level scheme, angular correlations, octupole bands, J, π, B(E1)/B(E2). Comparison with IBM and IBFM calculations.

doi: 10.1016/j.nuclphysa.2023.122738
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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
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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
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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
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2022CH41      Bull.Rus.Acad.Sci.Phys. 86, 883 (2022)

E.V.Chernysheva, A.M.Rodin, V.Yu.Vedeneev, A.V.Gulyaev, A.V.Gulyaeva, M.Holik, S.N.Dmitriev, D.Kamas, J.Kliman, A.B.Komarov, L.Krupa, P.Kohout, A.Kohoutova, A.S.Novoselov, Yu.Ts.Oganessian, A.Opichal, J.Pechousek, A.V.Podshibyakin, V.S.Salamatin, S.V.Stepantsov S.A.Yukhimchuk

Cross Sections of the Production of Mercury and Radon Isotopes in Complete Fusion Reactions with 36, 40Ar and 40, 48Ca Projectiles

NUCLEAR REACTIONS 144Sm(40Ar, Xn)184Hg/181Hg/182Hg/181Hg/180Hg/179Hg/178Hg, E=154-232 MeV; 148Sm(36Ar, Xn)184Hg/183Hg/182Hg/181Hg/180Hg/179Hg, E=144-233 MeV; 144Nd(40Ca, Xn)184Hg/183Hg/182Hg/181Hg/180Hg/179Hg, E=145-216 MeV; 142Nd(48Ca, Xn)190Hg/185Hg/184Hg/183Hg, E=202-264 MeV; 166Er(40Ar, Xn)206Rn/203Rn/202Rn/201Rn, E=156-202 MeV; measured reaction products, Eα, Iα; deduced σ. Comparison with theoretical calculations. Flerov Laboratory's U400M cyclotron.

doi: 10.3103/S1062873822080044
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2022KA12      Phys.Rev. C 105, 044612 (2022)

D.Kamas, A.Opichal, E.V.Chernysheva, S.N.Dmitriev, A.V.Gulyaev, A.V.Gulyaeva, M.Holik, J.Kliman, A.B.Komarov, L.Krupa, A.S.Novoselov, Yu.Ts.Oganessian, A.V.Podshibyakin, A.M.Rodin, V.S.Salamatin, S.V.Stepantsov, V.Yu.Vedeneev, S.A.Yukhimchuk

Evaporation-residue cross sections in complete fusion reactions leading to Hg and Rn isotopes

NUCLEAR REACTIONS 144Sm(40Ar, 2n), (40Ar, 3n), (40Ar, 4n), (40Ar, 5n), (40Ar, 6n), E=299 MeV; 148Sm(36Ar, 2n), (36Ar, 3n), (36Ar, 4n), (36Ar, 5n), E=324 MeV; 144Nd(40Ca, 2n), (40Ca, 3n), (40Ca, 4n), (40Ca, 5n), E=268 MeV; 142Nd(48Ca, 5n), (48Ca, 6n), (48Ca, 7n), E=327 MeV; 166Er(40Ar, 3n), (40Ar, 4n), (40Ar, 5n), (40Ar, 2np), (40Ar, 3np), (40Ar, 4np), (40Ar, 5np), E=300 MeV; measured reaction products, Eα, Iα; deduced complete fusion and xn-evaporation σ(E). Comparison to coupled-channel calculations. Measurement of α from the decay of reaction products implanted on Al foils.with Si-detectors. Beam from U400M cyclotron of the FLNR, JINR (Dubna).

doi: 10.1103/PhysRevC.105.044612
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2022OG03      Phys.Part. and Nucl.Lett. 19, 108 (2022)

Yu.Ts.Oganessian, N.Yu.Kazarinov, G.G.Gulbekian

Solenoid Separator of Superheavy Elements: A New Design for the GASSOL Separator

doi: 10.1134/S1547477122020078
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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
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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
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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
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2021LU08      Int.J.Mod.Phys. E30, 2150037 (2021)

Y.X.Luo, J.O.Rasmussen, J.H.Hamilton, A.V.Ramayya, E.H.Wang, S.Frauendorf, W.Y.Liang, C.F.Jiao, Q.Wu, H.L.Liu, F.R.Xu, Y.X.Liu, Y.Sun, J.K.Hwang, S.H.Liu, S.J.Zhu, N.T.Brewer, I.Y.Lee, G.M.Ter-Akopian, Yu.Oganessian, A.V.Daniel, R.Donangelo, W.C.Ma

First observation of collective rotational bands in neutron-rich 142La and the study of octupole/triaxial deformations in 142, 143La

RADIOACTIVITY 252Cf(SF); measured decay products, Eγ, Iγ, γ-g.-coin. 142,143La; deduced γ-ray energies and intensities, J, π, yrast band, octupole deformation parameter. TRS model calculations.

doi: 10.1142/S0218301321500373
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2021MU09      Phys.Rev. C 104, 064318 (2021)

B.M.Musangu, E.H.Wang, J.H.Hamilton, S.Jehangir, G.H.Bhat, J.A.Sheikh, S.Frauendorf, C.J.Zachary, J.M.Eldridge, A.V.Ramayya, A.C.Dai, F.R.Xu, J.O.Rasmussen, Y.X.Luo, G.M.Ter-Akopian, Yu.Ts.Oganessian, S.J.Zhu

Chiral vibrations and collective bands in 104, 106Mo

RADIOACTIVITY 252Cf(SF); measured Eγ, Iγ, multi-fold γγ-coin, γγ(θ) using Gammasphere array of 101 Ge detectors at Lawrence Berkeley National Laboratory (LBNL). 104,106Mo; deduced high-spin levels, J, π, rotational bands, chiral vibrational doublet bands, multipolarities, multipole mixing ratios. Comparison with Triaxial projected shell model (TPSM) calculations.

doi: 10.1103/PhysRevC.104.064318
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2021WA19      Phys.Rev. C 103, 034301 (2021)

E.H.Wang, J.H.Hamilton, A.V.Ramayya, C.J.Zachary, A.Lemasson, A.Navin, M.Rejmund, S.Bhattacharyya, Q.B.Chen, S.Q.Zhang, J.M.Eldridge, J.K.Hwang, N.T.Brewer, Y.X.Luo, J.O.Rasmussen, S.J.Zhu, G.M.Ter-Akopian, Yu.Ts.Oganessian, M.Caamano, E.Clement, O.Delaune, F.Farget, G.de France, B.Jacquot

Pseudospin-doublet bands and Gallagher Moszkowski doublet bands in 100Y

RADIOACTIVITY 252Cf(SF); measured Eγ, γγγ-, and γγγγ-coin using Gammasphere array at LBNL. 100Y; deduced levels, J, π, bands, configurations.

NUCLEAR REACTIONS 9Be(238U, F)100Y, E=6.2 MeV/nucleon; measured Eγ, γγ-coin, A- and Z-gated γ spectra using VAMOS++ spectrometer and EXOGAM array at GANIL facility. 100Y; deduced high-spin levels, J, π, rotational bands, B(M1)/B(E2), configurations, moments of inertia plots. Comparison with particle-rotor model calculations.

NUCLEAR STRUCTURE 100Y; calculated potential-energy surface in the (β2, γ) plane, levels, J, π, bands, in-band B(M1), B(E2), B(M1)/B(E2), rms components of the angular momentum versus spin. Constrained triaxial covariant density-functional theory (CDFT) and quantal particle rotor model (PRM) calculations. Comparison with experimental data.

doi: 10.1103/PhysRevC.103.034301
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2021WA42      Nucl.Phys. A1015, 122281 (2021)

E.H.Wang, N.T.Brewer, J.H.Hamilton, A.V.Ramayya, W.A.Yzaguirre, J.K.Hwang, S.H.Liu, Y.X.Luo, J.O.Rasmussen, S.J.Zhu, G.M.Ter-Akopian, Yu.Ts.Oganessian

Coexistence of octupole deformation and beta and gamma vibrational bands in 148Ce

RADIOACTIVITY 252Cf(SF); measured reaction products, Eγ, Iγ. 148Ce; deduced γ-ray energies and intensities, J, π, high-spin states, vibrartional bands, mixing ratios.

doi: 10.1016/j.nuclphysa.2021.122281
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2020EL07      Phys.Rev. C 102, 044323 (2020)

J.M.Eldridge, E.H.Wang, C.J.Zachary, J.H.Hamilton, B.M.Musangu, A.V.Ramayya, G.M.Ter-Akopian, Yu.Ts.Oganessian, Y.X.Luo, J.O.Rasmussen, S.J.Zhu

Structure of 155Nd and 163Gd from 252Cf spontaneous fission

RADIOACTIVITY 252Cf(SF); measured Eγ, Iγ, three- and four-fold γγ-coin using the Gammasphere array with 101 Ge detectors, located at LBNL at the time. 155Nd, 163Gd; deduced high-spin levels, J, π, bands, Nilsson configurations. Comparison with theoretical calculations. Systematics of level energies and bands in 153Nd, 155Nd and 155Sm.

doi: 10.1103/PhysRevC.102.044323
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2020MU04      Phys.Rev. C 101, 034610 (2020)

B.M.Musangu, A.H.Thibeault, T.H.Richards, E.H.Wang, J.H.Hamilton, C.J.Zachary, J.M.Eldridge, A.V.Ramayya, Y.X.Luo, J.O.Rasmussen, G.M.Ter-Akopian, Yu.Ts.Oganessian, S.J.Zhu

Anomalous neutron yields confirmed for Ba-Mo and newly observed for Ce-Zr from spontaneous fission of 252Cf

RADIOACTIVITY 252Cf(SF); measured Eγ, Iγ, three- and four-fold γγ-coin using the Gammasphere array at LBNL; deduced fission yield matrices and neutron multiplicity yields of Ba(A=138-148)-Mo(A=100-110), Pd(A=110-118)-Te(A=130-138), Nd(A=148-156)-Sr(A=91-100), and Ce(A=144-152)-Zr(A=96-104) pairs of isotopes using up-to-date level schemes of relevant nuclei, and cross-checking of energies of the γ-transitions in multiple isotopes, possible hyperdeformation and octupole deformation at scission giving rise to high neutron multiplicities.

doi: 10.1103/PhysRevC.101.034610
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset14634.


2020TE02      Phys.Atomic Nuclei 83, 497 (2020)

G.M.Ter-Akopian, Yu.Ts.Oganessian, A.A.Bezbakh, A.S.Fomichev, M.S.Golovkov, A.V.Gorshkov, S.A.Krupko, E.Yu.Nikolskii, S.I.Sidorchuk, S.V.Stepantsov, R.Wolski

Radioactive-Ion Beams for the Fission Study of Heavy Neutron-Rich Nuclei

NUCLEAR REACTIONS 238U, 244Pu, 248Cm, 249Bk, 249,250,251Cf, 254Es(9Li, X), (10Be, X), (11B, X), (13C, X), (14C, X), (16C, X), (15N, X), (19N, X), (18O, X), (20O, X), (22O, X), (21F, X), (22F, X), (22Ne, X), (24Ne, X), (26Ne, X), (26Mg, X), (30Mg, X), (36S, X), E=4-6 MeV/nucleon; analyzed available data; deduced opportunities with quasi-elastic, multi-nucleon transfer reactions induced by the radioactive-ion beams in the neighborhood of the recently discovered island of super-heavy elements and to the acquirement of new data specifying significant fission characteristics of the actinide nuclei appearing in the r-process nucleosythesis.

doi: 10.1134/S1063778820040195
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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
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2019CA15      Phys.Rev. C 99, 064606 (2019)

N.Carjan, F.A.Ivanyuk, Yu.Ts.Oganessian

Fission of superheavy nuclei: Fragment mass distributions and their dependence on excitation energy

RADIOACTIVITY 252,254,256,258,260,262,264,266,268,270No, 264,266,268,270,272,274,276,278Hs, 276,278,280,282,284,286Cn, 290,291,292,293Lv, 268,270,272,274,276,278,280,282,284,288,292Ds, 254,256,258,260,262,264,266,268,270Rf, 272,274,276,280,284,285,286,287,288,292,296,298,300,304Fl, 276,280,284,288,292,294,296,300,304Og(SF); calculated average mass of light and heavy fission fragments, fission fragment mass distribution, average total kinetic energy of fission fragments, second moments of the total kinetic energy distribution of fission using a prescission point model.

doi: 10.1103/PhysRevC.99.064606
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2018BH07      Phys.Rev. C 98, 044316 (2018)

S.Bhattacharyya, E.H.Wang, A.Navin, M.Rejmund, J.H.Hamilton, A.V.Ramayya, J.K.Hwang, A.Lemasson, A.V.Afanasjev, S.Bhattacharya, J.Ranger, M.Caamano, E.Clement, O.Delaune, F.Farget, G.de France, B.Jacquot, Y.X.Luo, Yu.Ts.Oganessian, J.O.Rasmussen, G.M.Ter-Akopian, S.J.Zhu

Deformed band structures in neutron-rich 152-158Pm isotopes

NUCLEAR REACTIONS 9Be(238U, F), E=6.2 MeV/nucleon; measured fission fragments, time of flight, Eγ, Iγ, γγ- and (fragment)γ-coin using the VAMOS++ magnetic spectrometer for fragment separation and the EXOGAM segmented Clover array for γ detection at GANIL. 152,153,154,155,156,157,158Pm; deduced high-spin levels, J, π, bands, alignment and staggering plots. 151Pm; measured γ spectrum in coincidence with fission fragments. Systematics of band structures in 151,153,155,157Pm. Comparison with previous experimental values and cranked Hartree-Bogoliubov calculations.

RADIOACTIVITY 252Cf(SF); measured Eγ, Iγ, γ(θ), high-fold γγ-coin using Gammasphere array with 101 HPGe detectors at LBNL. 152,153,154,155,156,157,158Pm; deduced high-spin levels, bands.

doi: 10.1103/PhysRevC.98.044316
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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
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2018EL01      Eur.Phys.J. A 54, 15 (2018)

J.M.Eldridge, B.Fenker, J.H.Hamilton, C.Goodin, C.J.Zachary, E.Wang, A.V.Ramayya, A.V.Daniel, G.M.Ter-Akopian, Yu.Ts.Oganessian, Y.X.Luo, J.O.Rasmussen, S.J.Zhu

E2/M1 mixing ratios in transitions from the gamma vibrational bands to the ground state rotational bands of 102, 104, 106, 108Mo, 108, 110, 112Ru, and 112, 114, 116Pd

RADIOACTIVITY 252Cf(SF); measured fission fragments Eγ, Iγ(θ), γγ-coin using 101 HPGe GAMMASPHERE detectors; deduced 2+ excited states attenuation factors, g-factors. 102,104,106,108Mo;108,110,112Ru, 114,116Pd; deduced rotational bands, vibrational bands of selected fission fragments, B(E2), B(M1) using γγγ and higher coin using angular correlations, g-factors of 2+ states of the gs rotational band; calculated γ vibrational bands, gs rotational bands of selected, B(E2), B(M1), mixing ratios E2/M1.

doi: 10.1140/epja/i2018-12426-5
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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
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2018WA19      Int.J.Mod.Phys. E27, 1850051 (2018)

E.H.Wang, J.H.Hamilton, A.V.Ramayya, R.Han, C.J.Zachary, J.M.Eldridge, J.K.Hwang, N.T.Brewer, Y.X.Luo, J.O.Rasmussen, S.J.Zhu, G.M.Ter-Akopian, Yu.Ts.Oganessian

New levels in spherical 96Y

RADIOACTIVITY 252Cf(SF); measured decay products, Eγ, Iγ. 96Y; deduced γ-ray energies, J, π. Comparison with NUSHELLX code calculations.

doi: 10.1142/S0218301318500519
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2017CA29      Nucl.Phys. A968, 453 (2017)

N.Carjan, F.A.Ivanyuk, Yu.Ts.Oganessian

Pre-scission model predictions of fission fragment mass distributions for super-heavy elements

RADIOACTIVITY 279,280,281Ds, 281Rg, 282,283,284Cn, 284,285,286Fl[from superheavies produced in 48Ca impacting neutron-rich transuranium targets and sequentiual α-decays]; calculated relative yields from 279,281Ds, 281Rg, 282,284Cn vs mass number and vs TKE, potential energy surfaces, deformation of 280Ds and 284Cn. Fl, Lv, Og, Z=126(SF); calculated fragment mass distribution. 284,304Fl, 308,328126; calculated potential energy surface, deformation vs fragment mass. 274,276,278,280,282Fl; calculated yields vs fragment mass, potential energy surface, deformation. 252,254,256,258,262No; calculated fragment mass distribution, yield vs TKER; compared with data; deduced effect of octupole deformation on TKE and mass distribution. Calculations done using Strutinsky prescription, nuclear shapes prior to fission descibed using Cassinian ovals. Deformation described using α1, α3, α4 and α6 parameters.

doi: 10.1016/j.nuclphysa.2017.06.048
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2017FR03      Int.J.Mod.Phys. E26, 1750030 (2017)

H.Fryman-Sinkhorn, E.H.Wang, C.J.Zachary, J.H.Hamilton, A.V.Ramayya, G.H.Bhat, J.A.Sheikh, R.N.Ali, A.A.Wani, A.C.Dai, W.Y.Liang, F.R.Xu, J.K.Hwang, N.T.Brewer, Y.X.Luo, J.O.Rasmussen, S.J.Zhu, G.M.Ter-Akopian, Yu.Ts.Oganessian

Possible very anharmonic one- and two-phonon γ-vibrational bands in 103Mo

RADIOACTIVITY 252Cf(SF); measured decay products, Eγ, Iγ, γ-γ-coin. 103Mo; deduced γ-ray energies and intensities, J, π, γ-vibrational bands. Comparison with potential energy surface calculations.

doi: 10.1142/S0218301317500306
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2017HU09      J.Phys.(London) G44, 095101 (2017)

Y.Huang, S.J.Zhu, J.H.Hamilton, Y.J.Chen, E.H.Wang, A.V.Ramayya, Z.G.Xiao, H.J.Li, Y.X.Luo, J.O.Rasmussen, G.M.Ter-Akopian, Y.T.Oganessian

Reinvestigation of s = ±i octupole bands in neutron-rich 141Xe

RADIOACTIVITY 252Cf(SF); measured decay products, Eγ, Iγ. 141Xe; deduced high spin energy levels, J, π, multiplicity, B(E1)/B(E2). Comparison with shell model calculations, available data.

doi: 10.1088/1361-6471/aa8318
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2017MA54      Phys.Rev. C 96, 034319 (2017), Erratum Phys.Rev. C 102, 029902 (2020)

J.Marcellino, E.H.Wang, C.J.Zachary, J.H.Hamilton, A.V.Ramayya, G.H.Bhat, J.A.Sheikh, A.C.Dai, W.Y.Liang, F.R.Xu, J.K.Hwang, N.T.Brewer, Y.X.Luo, J.O.Rasmussen, S.J.Zhu, G.M.Ter-Akopian, Yu.Ts.Oganessian

One- and two-phonon γ-vibrational bands in neutron-rich 107Mo

RADIOACTIVITY 252Cf(SF); measured Eγ, Iγ, γγ-coin using Gammasphere array at LBNL, Berkeley. 107Mo; deduced levels, J, π, rotational and quasiparticle bands, triaxial deformation, configurations; calculated deformation from potential energy surface (PES) plot. Comparison with projected shell model calculations, and with systematics of levels in 103,104,105,106,107,108Mo.

doi: 10.1103/PhysRevC.96.034319
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2017OG01      Phys.Scr. 92, 023003 (2017)

Y.T.Oganessian, A.Sobiczewski, G.M.Ter-Akopian

Superheavy nuclei: from predictions to discovery

doi: 10.1088/1402-4896/aa53c1
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2017WA19      Phys.Rev. C 95, 064311 (2017); Erratum Phys.Rev. C 109, 019902 (2024)

E.H.Wang, J.H.Hamilton, A.V.Ramayya, Y.X.Liu, H.J.Li, A.C.Dai, W.Y.Liang, F.R.Xu, J.K.Hwang, S.H.Liu, N.T.Brewer, Y.X.Luo, J.O.Rasmussen, Y.Sun, S.J.Zhu, G.M.Ter-Akopian, Yu.Ts.Oganessian

Oblate deformation in neutron-rich 118, 119Ag

RADIOACTIVITY 252Cf(SF); measured Eγ, Iγ, γγ-coin using Gammasphere array of 101 Ge detectors at LBNL-Berkeley. 118,119Ag; deduced high-spin levels, J, π, multipolarities, bands, configurations. Total Routhian surface and projected shell model calculation. Systematics of 7/2+ bands in 115,117,119Ag. Systematics of energy levels and staggering in negative-parity bands in A=104-118, odd-odd Ag isotopes.

doi: 110.1103/PhysRevC.95.064311
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2017WA50      Eur.Phys.J. A 53, 234 (2017)

E.H.Wang, W.Lewis, C.J.Zachary, J.H.Hamilton, A.V.Ramayya, J.K.Hwang, S.H.Liu, N.T.Brewer, Y.X.Luo, J.O.Rasmussen, S.J.Zhu, G.M.Ter-Akopian, Yu.Ts.Oganessian

New levels and reinvestigation of octupole correlations in 146, 147La

RADIOACTIVITY 252Cf(SF); 146,147La; measured fragments Eγ, Iγ, γγ-coin, triple and fourfold γ-coin using Gammasphere; deduced γ transitions, levels, J, π, T1/2, 3+ bands, angular momentum vs energy in different bands, B(E1)/B(E2) ratio, electron dipole strength of selected states. Bands in La compared with those in 143Cs.

doi: 10.1140/epja/i2017-12409-0
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2016HU10      Phys.Rev. C 93, 064321 (2016)

Y.Huang, S.J.Zhu, J.H.Hamilton, E.H.Wang, A.V.Ramayya, Z.G.Xiao, H.J.Li, Y.X.Luo, J.O.Rasmussen, G.M.Ter-Akopian, Yu.Ts.Oganessian

Proposed s =±1 octupole bands in 140Xe

RADIOACTIVITY 252Cf(SF); measured Eγ, Iγ, γγ-coin, γγ(θ) using Gammasphere array. 140Xe; deduced high-spin levels, J, π, s=+1 and s=-1 parity-doublet octupole bands, multipolarities, multipole mixing ratios, B(E1)/B(E2) ratios, octupole correlations, moments of inertia plots. Level systematics of 140Xe, 143Ba and 148Ce. 106,107,108,109,110Ru; observed γ rays.

doi: 10.1103/PhysRevC.93.064321
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2016HU16      Int.J.Mod.Phys. E25, 1650064 (2016)

Y.Huang, S.J.Zhu, J.H.Hamilton, A.V.Ramayya, E.H.Wang, Y.X.Liu, Y.Sun, J.K.Hwang, Z.G.Xiao, H.J.Li, Y.X.Luo, J.O.Rasmussen, G.M.Ter-Akopian, Yu.Ts.Oganessian

Reinvestigation of two-phonon γ-vibrational band in neutron-rich 114Pd

RADIOACTIVITY 252Cf(SF); measured decay products, Eγ.Iγ. 114Pd; deduced energy levels, level scheme, J, π, γ-bands. Comparison with theoretical calculations.

doi: 10.1142/S0218301316500646
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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
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2015CA19      Nucl.Phys. A942, 97 (2015)

N.Carjan, F.A.Ivanyuk, Yu.Oganessian, G.Ter-Akopian

Fission of transactinide elements described in terms of generalized Cassinian ovals: Fragment mass and total kinetic energy distributions

NUCLEAR STRUCTURE 254,264Fm, 254,264Rf; calculated potential energy surface vs mass asymmetry and elongation, scission shapes at fission. 246,248,250,252,254,256,258,260,262,264Fm, 254,256,258,260,262,264,266,268Rf; calculated mass distribution and total kinetic energy distribution. 252,254,256,258,260,262,264No, 258,260,262,264,266,268Sg; calculated mass distribution. Generalized Cassinian ovals.

doi: 10.1016/j.nuclphysa.2015.07.019
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2015OG01      Rep.Prog.Phys. 78, 36301 (2015)

Y.T.Oganessian, V.K.Utyonkov

Super-heavy element research

doi: 10.1088/0034-4885/78/3/036301
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2015OG05      Nucl.Phys. A944, 62 (2015)

Yu.Ts.Oganessian, V.K.Utyonkov

Superheavy nuclei from 48Ca-induced reactions

doi: 10.1016/j.nuclphysa.2015.07.003
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2015OG07      Phys. Today 68, 32 (2015)

Y.T.Oganessian, K.P.Rykaczewski

A Beachhead on the island of stability

doi: 10.1063/PT.3.2880
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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
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetF1273. Data from this article have been entered in the XUNDL database. For more information, click here.


2015WA28      Phys.Rev. C 92, 034317 (2015); Erratum Phys.Rev. C 109, 029902 (2024)

E.H.Wang, A.Lemasson, J.H.Hamilton, A.V.Ramayya, J.K.Hwang, J.M.Eldridge, A.Navin, M.Rejmund, S.Bhattacharyya, S.H.Liu, N.T.Brewer, Y.X.Luo, J.O.Rasmussen, H.L.Liu, H.Zhou, Y.X.Liu, H.J.Li, Y.Sun, F.R.Xu, S.J.Zhu, G.M.Ter-Akopian, Yu.Ts.Oganessian, M.Caamano, E.Clement, O.Delaune, F.Farget, G.de France, B.Jacquot

Identification of new transitions and mass assignments of levels in 143-153Pr

NUCLEAR REACTIONS 9Be(238U, F), E=6.2 MeV/nucleon; measured Eγ, Iγ, (fission fragment)γ-, γγ-coin using VAMOS++ spectrometer and EXOGAM array at GANIL. 143,144,145,146,147,148,149,150,151,152,153Pr; deduced levels, J, π, bands. Comparison with previous experimental data.

doi: 10.1103/PhysRevC.92.034317
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2014LI46      Phys.Rev. C 90, 047303 (2014)

H.J.Li, S.J.Zhu, J.H.Hamilton, E.H.Wang, A.V.Ramayya, Y.J.Chen, J.K.Hwang, J.Ranger, S.H.Liu, Z.G.Xiao, Y.Huang, Z.Zhang, Y.X.Luo, J.O.Rasmussen, I.Y.Lee, G.M.Ter-Akopian, Yu.Ts.Oganessian, W.C.Ma

Reinvestigation of high spin states and proposed octupole correlations in 147Ce

RADIOACTIVITY 252Cf(SF); measured Eγ, Iγ, triple- and four-fold γγ-coin using Gammasphere detector array at LBNL facility. 147Ce; deduced high-spin levels, bands, B(E1)/B(E2) ratios, octupole correlations. Comparison with reflection-asymmetric shell-model calculations. Systematics of octupole band structures in 145Ba, 147Ce, and 149Nd.

doi: 10.1103/PhysRevC.90.047303
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2014LU07      Phys.Rev. C 89, 044326 (2014)

Y.X.Luo, J.O.Rasmussen, J.H.Hamilton, A.V.Ramayya, E.Wang, Y.X.Liu, C.F.Jiao, W.Y.Liang, F.R.Xu, Y.Sun, S.Frauendorf, J.K.Hwang, S.H.Liu, S.J.Zhu, N.T.Brewer, I.Y.Lee, G.M.Ter-Akopian, Yu.Oganessian, R.Donangelo, W.C.Ma

First observation of a rotational band and the role of the proton intruder orbital π 1/2+[431] in very neutron-rich odd-odd 106Nb

RADIOACTIVITY 252Cf(SF); measured Eγ, Iγ, 3- and 4-fold γγ-coin, coincidences with γ rays from complementary A=142-144 La isotopes , fission yield ratio using Gammasphere array at LBNL. 104,106Nb; deduced high-spin levels, J, π, rotational bands, alignment and moments of inertia plots, configurations. Comparison with projected shell model calculations. Role of 1/2[431] proton intruder orbital, and shape evolution.

NUCLEAR STRUCTURE 104,106Nb; calculated levels, J, π, potential energy surfaces (PES), configurations, alignments, moments of inertia. Projected shell model. Comparison with experimental data.

doi: 10.1103/PhysRevC.89.044326
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2014WA53      Phys.Rev. C 90, 067306 (2014)

E.H.Wang, J.H.Hamilton, A.V.Ramayya, J.K.Hwang, S.H.Liu, N.T.Brewer, Y.X.Luo, J.O.Rasmussen, S.J.Zhu, G.M.Ter-Akopian, Yu.Ts.Oganessian

Identification of a possible proton two-quasiparticle band in 158Sm

RADIOACTIVITY 252Cf(SF); measured Eγ, Iγ, γγ-coin using Gammasphere array at LBNL facility. 158Sm; deduced high-spin levels, J, π, bands, configuration, Comparison with projected shell model (PSM) calculations. Systematics of 2-quasiparticle bands in 156,158Sm, 156Nd.

doi: 10.1103/PhysRevC.90.067306
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2013LI23      Phys.Rev. C 87, 057302 (2013)

S.H.Liu, J.H.Hamilton, A.V.Ramayya, S.J.Zhu, Y.Shi, F.R.Xu, J.C.Batchelder, N.T.Brewer, J.K.Hwang, Y.X.Luo, J.O.Rasmussen, W.C.Ma, A.V.Daniel, G.M.Ter-Akopian, Yu.Ts.Oganessian

New high-spin level scheme of neutron-rich 112Rh

RADIOACTIVITY 252Cf(SF); measured Eγ, Iγ, γγ-coin using Gammasphere array. 112Rh; deduced high-spin levels, J, π, bands, triaxiality. Total Routhian surface calculations. Systematics of yrare bands in 112,114Rh.

doi: 10.1103/PhysRevC.87.057302
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2013LI52      Phys.Rev. C 88, 054311 (2013)

H.J.Li, S.J.Zhu, J.H.Hamilton, A.V.Ramayya, J.K.Hwang, Y.X.Liu, Y.Sun, Z.G.Xiao, E.H.Wang, J.M.Eldridge, Z.Zhang, Y.X.Luo, J.O.Rasmussen, I.Y.Lee, G.M.Ter-Akopian, A.V.Daniel, Yu.Ts.Oganessian, W.C.Ma

Identification of multi-phonon γ-vibrational bands in odd-Z 105Nb

RADIOACTIVITY 252Cf(SF); measured Eγ, Iγ, γγ-coin, three and four-fold γγ-coin using Gammasphere array at LBNL facility. 105Nb; deduced high-spin levels, J, π, multi-phonon γ-vibrational bands, alignment plots; calculated total Routhian surfaces (TRS) with cranked shell model. Comparison with triaxial projected shell model calculations. Systematics of level energies and bandhead energies for ground, one-phonon and two-phonon bands in 103,105Nb, 104,105,106,108Mo, 107,109Tc, 108,110,112,114Ru.

doi: 10.1103/PhysRevC.88.054311
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2013LU18      Nucl.Phys. A919, 67 (2013); Erratum Nucl.Phys. A983, 321 (2019)

Y.X.Luo, J.O.Rasmussen, J.H.Hamilton, A.V.Ramayya, S.Frauendorf, J.K.Hwang, N.J.Stone, S.J.Zhu, N.T.Brewer, E.Wang, I.Y.Lee, S.H.Liu, G.M.Ter Akopian, A.V.Daniel, Yu.Ts.Oganessian, M.A.Stoyer, R.Donangelo, W.C.Ma, J.D.Cole, Y.Shi, F.R.Xu

New insights into the nuclear structure in neutron-rich 112, 114, 115, 116, 117, 118Pd

RADIOACTIVITY 252Cf(SF); measured fission fragments Eγ, Iγ(θ), γγ-coin using Compton-suppressed Ge detectors of Gammasphere array. 112,114,115,116,117,118Pd deduced levels, J, π, γ transitions, rotational bands, γ bands, triaxial deformation, wobbling, band crossing, backbanding, shape evolution; calculated deformation, shape evolution, band crossing using TRS (total Ruthian surface).

doi: 10.1016/j.nuclphysa.2013.10.002
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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
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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
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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
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2013SI09      Bull.Rus.Acad.Sci.Phys. 77, 355 (2013); Izv.Akad.Nauk RAS, Ser.Fiz 77, 398 (2013)

S.I.Sidorchuk, A.A.Bezbakh, R.Wolski, M.S.Golovkov, A.V.Gorshkov, V.A.Gorshkov, L.V.Grigorenko, I.A.Egorova, G.Kaminski, S.A.Krupko, E.A.Kuzmin, E.Yu.Nikolskii, Yu.Ts.Oganessian, Yu.L.Parfenova, R.S.Slepnev, S.V.Stepantsov, G.M.Ter-Akopian, A.S.Fomichev, V.Chudoba, P.G.Sharov, P.Jaluvkova

Correlation Investigations of the Low-Energy 10He Spectrum

NUCLEAR REACTIONS 3H(8He, p), E=21.5 MeV/nucleon; measured reaction products, Ep, Ip; deduced missing mass spectrum, J, π of excited states. Comparison with available data.

doi: 10.3103/S1062873813040278
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2012FO24      J.Phys.:Conf.Ser. 337, 012025 (2012)

A.S.Fomichev, G.M.Ter-Akopian, A.A.Bezbakh, V.Chudoba, A.V.Daniel, M.S.Golovkov, A.V.Gorshkov, V.A.Gorshkov, L.V.Grigorenko, G.Kaminski, S.A.Krupko, Y.Ts.Oganessian, Y.L.Parfenova, S.I.Sidorchuk, R.S.Slepnev, L.Standylo, S.V.Stepantsov, R.Wolski, S.N.Ershov, V.K.Lukyanov, B.V.Danilin, A.A.Korsheninnikov, V.Z.Goldberg, M.Pfutzner, I.G.Mukha, H.Simon, O.B.Tarasov, N.K.Timofeyuk, M.V.Zhukov

Status of the ACCULINNA-2 project at FLNR

doi: 10.1088/1742-6596/337/1/012025
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2012FO26      Phys.Part. and Nucl.Lett. 9, 496 (2012)

A.S.Fomichev, V.Chudoba, A.V.Daniel, M.S.Golovkov, V.A.Gorshkov, S.A.Krupko, Yu.Ts.Oganessian, G.S.Popeko, S.I.Sidorchuk, R.S.Slepnev, G.M.Ter Akopian, R.Wolski, V.I.Chepigin, D.E.Katrasev, O.N.Malyshev, A.I.Svirikhin, A.V.Yeremin, Ch.Briancon, K.Hauschild, A.Korichi, M.-H.Ha, F.Hanappe, O.Dorvaux, L.Stuttge

Study of complete and incomplete fusion for loosely bound projectiles 6He and 6Li on 165Ho and 166Er targets

NUCLEAR REACTIONS 165Ho(6Li, 5n), (6Li, 3nα), E=58 MeV; 166Er(6He, 6n), (6He, 4nα), E=64 MeV; measured reaction products, Eα, Iα, Eγ, Iγ; deduced partial σ, complete fusion suppression factors. Comparison with EMPIRE and TALYS nuclear model code calculations.

doi: 10.1134/S1547477112060076
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2012LI54      Phys.Rev. C 86, 067302 (2012)

H.J.Li, S.J.Zhu, J.H.Hamilton, A.V.Ramayya, J.K.Hwang, Z.G.Xiao, M.Sakhaee, J.Y.Guo, S.W.Chen, N.T.Brewer, S.H.Liu, K.Li, E.Y.Yeoh, Z.Zhang, Y.X.Luo, J.O.Rasmussen, I.Y.Lee, G.Ter-Akopian, A.Daniel, Yu.Ts.Oganessian, W.C.Ma

Identification of a new side-band and proposed octupole correlations in very neutron-rich 152Ce

RADIOACTIVITY 252Cf(SF); measured prompt γ spectrum, Eγ, Iγ, γγ-coin using Gammasphere array at LBNL. 152Ce; deduced high-spin levels, J, p, rotational bands, β2 and β3 deformations, B(E1)/B(E2) ratios, moments of inertia plots, octupole band with s=+1. Comparison with calculations in a reflection asymmetric relativistic mean-field (RAS-RMF) approach. Calculated β2 versus β3 contour plot.

doi: 10.1103/PhysRevC.86.067302
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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
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2012OG03      Acta Phys.Pol. B43, 167 (2012)

Yu.Oganessian

Nuclei from "Island of Stability" of Superheavy Elements

doi: 10.5506/APhysPolB.43.167
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2012OG04      J.Phys.:Conf.Ser. 337, 012005 (2012)

Y.Oganessian

Nuclei in the "Island of Stability" of Superheavy Elements

doi: 10.1088/1742-6596/337/1/012005
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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
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2012SI07      Phys.Rev.Lett. 108, 202502 (2012)

S.I.Sidorchuk, A.A.Bezbakh, V.Chudoba, I.A.Egorova, A.S.Fomichev, M.S.Golovkov, A.V.Gorshkov, V.A.Gorshkov, L.V.Grigorenko, P.Jaluvkova, G.Kaminski, S.A.Krupko, E.A.Kuzmin, E.Yu.Nikolskii, Yu.Ts.Oganessian, Yu.L.Parfenova, P.G.Sharov, R.S.Slepnev, S.V.Stepantsov, G.M.Ter-Akopian, R.Wolski, A.A.Yukhimchuk, S.V.Filchagin, A.A.Kirdyashkin, I.P.Maksimkin, O.P.Vikhlyantsev

Structure of 10He Low-Lying States Uncovered by Correlations

NUCLEAR REACTIONS 3H(8He, p), E=21.5 MeV/nucleon; measured reaction products, Ep, Ip. 10He; deduced σ, ground and low-lying state energies, J, π, resonance width. Comparison with available data.

doi: 10.1103/PhysRevLett.108.202502
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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
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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
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2011LI25      Phys.Rev. C 83, 064310 (2011)

S.H.Liu, J.H.Hamilton, A.V.Ramayya, Y.S.Chen, Z.C.Gao, S.J.Zhu, L.Gu, E.Y.Yeoh, N.T.Brewer, J.K.Hwang, Y.X.Luo, J.O.Rasmussen, W.C.Ma, J.C.Batchelder, A.V.Daniel, G.M.Ter-Akopian, Yu.Ts.Oganessian, A.Gelberg

Signature inversion in odd-odd 114Rh: First identification of high-spin states in very neutron-rich 114Rh and application of the triaxial projected shell model

RADIOACTIVITY 252Cf(SF); measured Eγ, Iγ, γγ-coin, fission yields ratios using the Gammasphere array. 114Rh; deduced levels, J, π, rotational bands, signature inversion, configurations. Comparison with Triaxial Projected Shell Model calculations. Systematics of negative-parity yrast bands of odd-odd Rh nuclei with A=104-114.

doi: 10.1103/PhysRevC.83.064310
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2011LI29      Phys.Rev. C 84, 014304 (2011)

S.H.Liu, J.H.Hamilton, A.V.Ramayya, A.Gelberg, L.Gu, E.Y.Yeoh, S.J.Zhu, N.T.Brewer, J.K.Hwang, Y.X.Luo, J.O.Rasmussen, W.C.Ma, A.V.Daniel, Yu.Ts.Oganessian, G.M.Ter-Akopian

High-spin level structure of 115Rh: Evolution of triaxiality in odd-even Rh isotopes

RADIOACTIVITY 252Cf(SF); measured Eγ, Iγ, γγ-coin using Gammasphere array. 115Rh; deduced levels, J, π, bands, moment of inertia, signature splitting, fission yield ratios. Comparison with Rotor plus particle model calculations. Systematics of level energies, signature splittings and moments of inertia plots of 107,109,111,113,115Rh nuclei.

doi: 10.1103/PhysRevC.84.014304
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2011LI34      Int.J.Mod.Phys. E20, 1825 (2011)

K.Li, H.Hamilton, A.V.Ramayya, S.H.Liu, X.Q.Zhang, N.T.Brewer, J.K.Hwang, C.Goodin, S.J.Zhu, Y.X.Luo, J.O.Rasmussen, I.Y.Lee, S.C.Wu, R.Donangelo, A.V.Daniel, G.M.Ter-Akopian, Yu.Ts.Oganessian, A.Unzhakova, J.D.Cole, W.C.Ma, M.A.Stoyer

Identification of high-spin states in neutron-rich 89, 90, 92Kr and 86Se

RADIOACTIVITY 252Cf(SF); measured decay products, Eγ, Iγ, γ-γ-γ-coin. 88,90,92Kr, 86Se; deduced level schemes, energies, J, π. Comparison with nuclear systematics and angular correlation measurements.

doi: 10.1142/S0218301311019635
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2011LI41      Phys.Rev. C 84, 044303 (2011)

S.H.Liu, J.H.Hamilton, A.V.Ramayya, Y.Shi, F.R.Xu, S.J.Zhu, E.Y.Yeoh, J.C.Batchelder, N.T.Brewer, J.K.Hwang, Y.X.Luo, J.O.Rasmussen, W.C.Ma, A.V.Daniel, G.M.Ter-Akopian, Yu.Ts.Oganessian

First identification of high-spin states in the odd-odd neutron-rich nucleus 152Pr

RADIOACTIVITY 252Cf(SF); measured Eγ, Iγ, γγ-coin, γγ(θ) using GAMMASPHERE array. 152Pr; deduced levels, J, π, bands, conversion coefficients, multipolarity, configurations. 96,97,98,99Y, 149Ce, 151,153Pr; measured Eγ. Systematics of quasi-neutron states in 151Ce, 153Nd, 155Sm, 157Gd, 159Dy, 161Er. Comparison with total Routhian surface (TRS) calculations.

doi: 10.1103/PhysRevC.84.044303
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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
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2011OG07      Radiochim.Acta 99, 429 (2011)

Yu.Ts.Oganessian

Synthesis of the heaviest elements in 48Ca-induced reactions

RADIOACTIVITY 267Rf(SF), 266,268,270Db(SF), (EC), 269Db(SF), 266Sg(SF), 271Sg(α), (SF), 270,272,274Bh(α), 270,275Hs(α), 274,275,276,278Mt(α), 279Ds(SF), (α), 281Ds(SF), 278,279,280,282Rg(α), 281Rg(SF), 282,284Cn(SF), 285Cn(α), 283Cn(α), (SF), 282,283,284,285,286Nh, 286Fl(α), (SF), 287,288,289Fl, 287,288,289,290Mc, 290,291,292,293Lv, 293,294Ts, 294Og(α); measured decay and fission products, Eα, Iα; deduced decay mode, T1/2, energy, Q-value. Comparison with theoretical calculations.

doi: 10.1524/ract.2011.1860
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2011OG11      J.Phys.:Conf.Ser. 312, 082003 (2011)

Yu.Oganessian

Heaviest Nuclei from 48Ca-induced Reactions

doi: 10.1088/1742-6596/312/4/082003
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2010EI01      Radiochim.Acta 98, 133 (2010)

R.Eichler, N.V.Aksenov, Yu.V.Albin, A.V.Belozerov, G.A.Bozhikov, V.I.Chepigin, S.N.Dmitriev, R.Dressler, H.W.Gaggeler, V.A.Gorshkov, R.A.Henderson, A.M.Johnsen, J.M.Kenneally, V.Ya.Lebedev, O.N.Malyshev, K.J.Moody, Yu.Ts.Oganessian, O.V.Petrushkin, D.Piguet, A.G.Popeko, P.Rasmussen, A.Serov, D.A.Shaughnessy, S.V.Shishkin, A.V.Shutov, M.A.Stoyer, N.J.Stoyer, A.I.Svirikhin, E.E.Tereshatov, G.K.Vostokin, M.Wegrzecki, P.A.Wilk, D.Wittwer, A.V.Yeremin

Indication for a volatile element 114

RADIOACTIVITY 287,288Fl(α); measured atomic properties of element 114; deduced volatility. Comparison with Hg, At, and element 112 (Cn).

doi: 10.1524/ract.2010.1705
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2010HA16      Nucl.Phys. A834, 28c (2010)

J.H.Hamilton, S.J.Zhu, Y.X.Luo, A.V.Ramayya, S.Frauendorf, J.O.Rasmussen, J.K.Hwang, S.H.Liu, G.M.Ter-Akopian, A.V.Daniel, Y.Oganessian

Super deformation to maximum triaxiality in A=100-112; superdeformation, chiral bands and wobbling motion

RADIOACTIVITY 112Ru(IT) [from 252Cf(SF)]; measured Eγ, Iγ, γγ-coin; deduced wobbling bands. Comparison with systematics in adjacent nuclei.

doi: 10.1016/j.nuclphysa.2009.12.010
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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
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2010OG04      Nucl.Phys. A834, 331c (2010)

Yu.Oganessian

Heaviest Nuclei

doi: 10.1016/j.nuclphysa.2010.01.034
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2010SI08      Bull.Rus.Acad.Sci.Phys. 74, 437 (2010); Izv.Akad.Nauk RAS, Ser.Fiz 74, 473 (2010)

S.I.Sidorchuk, R.Wolski, M.S.Golovkov, V.A.Gorshkov, L.V.Grigorenko, S.A.Krupko, Yu.Ts.Oganessian, A.M.Rodin, R.S.Slepnev, S.V.Stepantsov, G.M.Ter-Akopian, A.S.Fomichev

Investigation of the 6He structure in quasi free scattering reactions

NUCLEAR REACTIONS 4He(6He, 2α), (6He, αt), E=25 MeV/nucleon; measured reaction products; deduced momentum correlations for quasi-free scattering, σ, cluster structures.

doi: 10.3103/S1062873810040039
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2010SI23      Nucl.Phys. A840, 1 (2010)

S.I.Sidorchuk, A.S.Fomichev, M.S.Golovkov, L.V.Grigorenko, V.A.Gorshkov, A.V.Gorshkov, S.A.Krupko, Yu.Ts.Oganessian, A.M.Rodin, R.S.Slepnev, S.V.Stepantsov, G.M.Ter-Akopian, R.Wolski, A.A.Korsheninnikov, E.Yu.Nikolskii, P.Roussel-Chomaz, W.Mittig

Study of the 6He structure in the reaction of quasifree scattering 4He(6He, 2α)

NUCLEAR REACTIONS 4He(6He, 2α), E=25 MeV/nucleon; measured Eα, Iα, αα-coin; deduced σ, σ(θ), neutron momentum spectrum and reaction mechanism features. Monte-Carlo simulation and PWIA of quasi-free scattering. Secondary radioactive beam.

doi: 10.1016/j.nuclphysa.2010.04.002
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2010WI14      Nucl.Instrum.Methods Phys.Res. B268, 28 (2010)

D.Wittwer, F.Sh.Abdullin, N.V.Aksenov, Yu.V.Albin, G.A.Bozhikov, S.N.Dmitriev, R.Dressler, R.Eichler, H.W.Gaggeler, R.A.Henderson, S.Hubener, J.M.Kenneally, V.Ya.Lebedev, Yu.V.Lobanov, K.J.Moody, Yu.Ts.Oganessian, O.V.Petrushkin, A.N.Polyakov, D.Piguet, P.Rasmussen, R.N.Sagaidak, A.Serov, I.V.Shirokovsky, D.A.Shaughnessy, S.V.Shishkin, A.M.Sukhov, M.A.Stoyer, N.J.Stoyer, E.E.Tereshatov, Yu.S.Tsyganov, V.K.Utyonkov, G.K.Vostokin, M.Wegrzecki, P.A.Wilk

Gas phase chemical studies of superheavy elements using the Dubna gas-filled recoil separator - Stopping range determination

RADIOACTIVITY 289Fl, 285Cn(α) [from 244Pu(48Ca, 3n)289Fl, E=265 MeV]; measured decay products, Eα, Iα; deduced α-decay chains.

doi: 10.1016/j.nimb.2009.09.062
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2009CH29      Acta Phys.Pol. B40, 899 (2009)

V.Chudoba, A.S.Fomichev, M.S.Golovkov, V.A.Gorshkov, S.A.Krupko, Yu.Ts.Oganessian, A.M.Rodin, S.I.Sidorchuk, R.S.Slepnev, S.V.Stepantsov, G.M.Ter-Akopian, R.Wolski, D.Pang, A.A.Korsheninnikov, E.A.Kuzmin, E.Yu.Nikolskii, B.G.Novatskii, D.N.Stepanov, P.Roussel-Chomaz, W.Mittig, A.Ninane, F.Hanappe, L.Stuttge, A.A.Yukhimchuk, Yu.I.Vinogradov, V.V.Perevozchikov, S.K.Grishechkin

Low-Energy Spectra of 8He and 10He Studied in (t, p) Type Reactions in Inverse Kinematics

NUCLEAR REACTIONS 3H(6He, p), 3H(8He, p), E=25 MeV; measured mass spectrum; deduced J, π, level energies.


2009FO09      Eur.Phys.J. A 42, 465 (2009)

A.S.Fomichev, L.V.Grigorenko, M.S.Golovkov, G.M.Ter-Akopian, Yu.Ts.Oganessian, V.A.Gorshkov, S.A.Krupko, A.M.Rodin, S.I.Sidorchuk, R.S.Slepnev, S.V.Stepantsov, R.Wolski, V.Chudoba, A.A.Korsheninnikov, E.A.Kuzmin, E.Yu.Nikolskii, B.G.Novatskii, D.N.Stepanov, P.Roussel-Chomaz, W.Mittig, D.Pang, A.Ninane, F.Hanappe, L.Stuttge, A.A.Yukhimchuk, V.V.Perevozchikov, Yu.I.Vinogradov, S.K.Grishechkin, S.V.Zlatoustovskiy

Properties of very n -rich He isotopes

NUCLEAR REACTIONS 3H(6He, p), (8He, p), E=25, 27.4 MeV/nucleon; 6,8He; measured reaction products; deduced missing mass spectra, resonance J, π, energy, yields. Comparison with other results.

doi: 10.1140/epja/i2008-10739-6
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2009GO01      Phys.Lett. B 672, 22 (2009)

M.S.Golovkov, L.V.Grigorenko, G.M.Ter-Akopian, A.S.Fomichev, Yu.Ts.Oganessian, V.A.Gorshkov, S.A.Krupko, A.M.Rodin, S.I.Sidorchuk, R.S.Slepnev, S.V.Stepantsov, R.Wolski, D.Y.Pang, V.Chudoba, A.A.Korsheninnikov, E.A.Kuzmin, E.Yu.Nikolskii, B.G.Novatskii, D.N.Stepanov, P.Roussel-Chomaz, W.Mittig, A.Ninane, F.Hanappe, L.Stuttge, A.A.Yukhimchuk, V.V.Perevozchikov, Yu.I.Vinogradov, S.K.Grishechkin, S.V.Zlatoustovskiy

The 8He and 10He spectra studied in the (t, p) reaction

NUCLEAR REACTIONS 3H(6He, p), E=25 MeV/nucleon; 3H(8He, p), E=27.4 MeV/nucleon; measured fragment, proton energies, (fragment)(proton)-coin and missing mass spectra; deduced σ. 6,8He deduced ground state energies, E1 strength distribution. Comparison with other data and calculations. Secondary radioactive beam.

doi: 10.1016/j.physletb.2008.12.052
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2009GR03      Phys.Part. and Nucl.Lett. 6, 118 (2009)

L.V.Grigorenko, M.S.Golovkov, G.M.Ter-Akopian, A.S.Fomichev, Yu.Ts.Oganessian, V.A.Gorshkov, S.A.Krupko, A.M.Rodin, S.I.Sidorchuk, R.S.Slepnev, S.V.Stepantsov, R.Wolski, D.Y.Pang, V.Chudoba, A.A.Korsheninnikov, E.A.Kuzmin, E.Yu.Nikolskii, B.G.Novatskii, D.N.Stepanov, P.Roussel-Chomaz, W.Mittig, A.Ninane, F.Hanappe, L.Stuttge, A.A.Yukhimchuk, V.V.Perevozchikov, Yu.I.Vinogradov, S.K.Grishechkin, S.V.Zlatoustovskiy

Soft dipole mode in 8He

NUCLEAR REACTIONS 3H(6He, p), E not given; measured Ep, Ip, cross sections. Deduced B(E1).

doi: 10.1134/S1547477109020046
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2009OG02      Phys.Rev. C 79, 024603 (2009)

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, A.N.Mezentsev, V.G.Subbotin, A.M.Sukhov, K.Subotic, V.I.Zagrebaev, S.N.Dmitriev, R.A.Henderson, K.J.Moody, J.M.Kenneally, J.H.Landrum, D.A.Shaughnessy, M.A.Stoyer, N.J.Stoyer, P.A.Wilk

Attempt to produce element 120 in the 244Pu+58Fe reaction

NUCLEAR REACTIONS 244Pu(58Fe, xn)298120/299120, E=330.4 MeV;measured α-particle spectra, (evaporation residues)α-coin, and upper limit of production cross section for Z=120 element. No decay chains for 298120 and 299120 were observed.

doi: 10.1103/PhysRevC.79.024603
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2009OG03      Phys.Rev. C 79, 024608 (2009)

Yu.Ts.Oganessian, S.N.Dmitriev, A.V.Yeremin, N.V.Aksenov, G.A.Bozhikov, V.I.Chepigin, M.L.Chelnokov, V.Ya.Lebedev, O.N.Malyshev, O.V.Petrushkin, S.V.Shishkin, A.I.Svirikhin, E.E.Tereshatov, G.K.Vostokin

Attempt to produce the isotopes of element 108 in the fusion reaction 136Xe+136Xe

NUCLEAR REACTIONS 136Xe(136Xe, xn)269Hs/270HS/271Hs, E=750 MeV;measured Eα, Iα, upper limit of production σ for Z=108 element; deduced fusion probability. Calculated excitation functions for one-neutron to four-neutron channels. Ti(136Xe, xn)168Os/169Os/170Os/171Os/172Os/, E=750 MeV; measured Eα, Iα.

doi: 10.1103/PhysRevC.79.024608
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2009OG07      Eur.Phys.J. A 42, 361 (2009)

Yu.Oganessian

Heavy element research at FLNR (Dubna)

NUCLEAR REACTIONS 208Pb, 209Bi(48Ca, n), (50Ti, n), (54Cr, n), (58Fe, n), (62Ni, n), (64Ni, n), (70Zn, n), E≈200-300 MeV; analyzed SHE production σ. 238U, 237Np, 242,244Pu, 243Am, 245,248Cm, 249Cf(22Ne, 4n), (26Mg, 4n), (34S, 5n), (48Ca, 3n), (48Ca, 4n), E≈200-300 MeV; measured Eα, Iα, SHE production σ using Gas-Filled Recoil Separator; analyzed reaction mechanism features; deduced Q-values, T1/2 of sequential decay products and compared to calculations.

doi: 10.1140/epja/i2009-10861-y
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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
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2008HA12      Phys.Rev. C 77, 047305 (2008); Erratum Phys.Rev. C 79, 019902 (2009)

K.Hauschild, A.Lopez-Martens, A.V.Yeremin, O.Dorvaux, A.V.Belozerov, M.L.Chelnokov, V.I.Chepigin, B.Gall, V.A.Gorshkov, M.Guttormsen, P.Jones, A.P.Kabachenko, A.Khouaja, A.C.Larsen, O.N.Malyshev, A.Minkova, H.T.Nyhus, Yu.Ts.Oganessian, D.Pantelica, A.G.Popeko, F.Rotaru, S.Saro, A.V.Shutov, S.Siem, A.I.Svirikhin, N.U.H.Syed

Half-life and excitation energy of the Iπ = 13/2+ isomer in 209Ra

NUCLEAR REACTIONS 174Yb(40Ar, 5n), E=192 MeV; measured half-life, α-spectra, Eγ, Iγ, γγ-, γα-coin, conversion electrons. 209Ra; deduced levels, J, π, configurations. 205,207Po, 207,209Rn, 211Ra; systematics.

doi: 10.1103/PhysRevC.77.047305
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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
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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
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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
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2007GO24      Phys.Rev. C 76, 021605 (2007)

M.S.Golovkov, L.V.Grigorenko, A.S.Fomichev, A.V.Gorshkov, V.A.Gorshkov, S.A.Krupko, Yu.Ts.Oganessian, A.M.Rodin, S.I.Sidorchuk, R.S.Slepnev, S.V.Stepantsov, G.M.Ter-Akopian, R.Wolski, A.A.Korsheninnikov, E.Yu.Nikolskii, V.A.Kuzmin, B.G.Novatskii, D.N.Stepanov, P.Roussel-Chomaz, W.Mittig

New insight into the low-energy 9He spectrum

NUCLEAR REACTIONS 2H(8He, p), E=25 MeV/nucleon; measured particle energy and missing mass spectra. 8He deduced levels, J, π.

doi: 10.1103/PhysRevC.76.021605
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2007GO41      Eur.Phys.J. Special Topics 150, 23 (2007)

M.S.Golovkov, L.V.Grigorenko, A.S.Fomichev, A.V.Gorshkov, V.A.Gorshkov, S.A.Krupko, Yu.Ts.Oganessian, A.M.Rodin, S.I.Sidorchuk, R.S.Slepnev, S.V.Stepantsov, G.M.Ter-Akopian, R.Wolski, A.A.Korsheninnikov, E.Yu.Nikolskii, V.A.Kuzmin, B.G.Novatskii, D.N.Stepanov, S.Fortier, P.Roussel-Chomaz, W.Mittig

Properties of low-lying 9He state

NUCLEAR REACTIONS 2H(8He, p), E=25 MeV/nucleon; measured proton and 8He energies. 9He; deduced resonance parameters.

doi: 10.1140/epjst/e2007-00256-x
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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
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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
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2007KA26      Phys.Atomic Nuclei 70, 619 (2007); Yad.Fiz. 70, 649 (2007)

R.Kalpakchieva, V.A.Maslov, R.A.Astabatian, A.A.Kulko, S.M.Lukyanov, E.R.Markarian, Yu.Ts.Oganessian, Yu.E.Penionzhkevich, N.K.Skobelev, Yu.G.Sobolev

Momentum Distributions of 4He Nuclei from the 6He and 6Li Breakup

NUCLEAR REACTIONS Au, C(6He, αX), E=10 MeV/nucleon; Ta, Si, Be(6Li, αX), E=18.46 MeV/nucleon; measured momentum distribution of 4He nuclei from the breakup of 6He and 6Li. Compared results to existing data.

doi: 10.1134/S1063778807040023
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2007LO11      Eur.Phys.J. A 32, 245 (2007)

A.Lopez-Martens, K.Hauschild, A.V.Yeremin, O.Dorvaux, A.V.Belozerov, Ch.Briancon, M.L.Chelnokov, V.I.Chepigin, D.Curien, P.Desesquelles, B.Gall, V.A.Gorshkov, M.Guttormsen, F.Hanappe, A.P.Kabachenko, F.Khalfallah, A.Korichi, A.C.Larsen, O.N.Malyshev, A.Minkova, Yu.Ts.Oganessian, A.G.Popeko, M.Rousseau, N.Rowley, R.N.Sagaidak, S.Sharo, A.V.Shutov, S.Siem, L.Stuttge, A.I.Svirikhin, N.U.H.Syed, Ch.Theisen

Isomeric states in 253No

NUCLEAR REACTIONS 207Pb(48Ca, 2n), E∼217 MeV; measured Eα, Eγ, E(ce) with the Gabriela detector. 253No deduced levels, J, π, configurations.

RADIOACTIVITY 253No(α) [from 207Bi(48Ca, 2n) and subsequent decay]; measured Eα, Eγ, E(ce), αγ-, α(ce)-coin, T1/2. 253No deduced levels, J, π, configurations.

doi: 10.1140/epja/i2007-10391-8
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2007OG01      J.Phys.(London) G34, R165 (2007)

Y.Oganessian

Heaviest nuclei from 48Ca-induced reactions

doi: 10.1088/0954-3899/34/4/R01
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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
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetA0892. Data from this article have been entered in the XUNDL database. For more information, click here.


2007OG04      Int.J.Mod.Phys. E16, 949 (2007)

Y.Oganessian

Synthesis of heaviest elements (results and prospects)

NUCLEAR REACTIONS 238U, 242,244Pu, 243Am, 245,248Cm, 249Cf(48Ca, X), E not given; measured cross sections and Eα from spontaneous fission.

doi: 10.1142/S0218301307006411
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2007OG05      Nucl.Phys. A787, 343c (2007)

Yu.Ts.Oganessian

Synthesis and Decay Properties of Heaviest Nuclei with 48Ca-Induced Reactions

NUCLEAR REACTIONS 208Pb, 209Bi(48Ca, n), (50Ti, n), (54Cr, n), (58Fe, n), (62Ni, n), (64Ni, n), (70Zn, n), E not given; analyzed σ. 233U, 237Np, 244Pu, 248Cm, 249Cf(22Ne, 4n), (26Mg, 4n), (36S, 5n), (48Ca, 4n), E not given; measured Eα, αα-coin following residual nucleus decay; analyzed σ; deduced reaction mechanism features, hindrance and survivability. Comparison with other data.

NUCLEAR STRUCTURE Z=100-118; compiled, analyzed superheavy element production and decay data.

RADIOACTIVITY 266,267,268Db, 269,271Sg, 270,272Bh, 275Hs, 274,275,276Mt, 279,281Ds, 278,279,280Rg, 283,284,285Cn, 280,281,282,283,284Nh, 286,287,288,289Fl, 287,288Mc, 290,291,292,293Lv, 294Og(α); measured Eα, T1/2. 267Rf, 271Sg, 279,281Ds, 282,283,284,285Cn, 286,288Fl(SF); measured T1/2. Comparison with model predictions. Comparison with other data.

doi: 10.1016/j.nuclphysa.2006.12.055
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2007OG07      Eur.Phys.J. D 45, 17 (2007)

Yu.Ts.Oganessian

Study of heavy nuclei at FLNR (Dubna)

doi: 10.1140/epjd/e2007-00208-4
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2007OG08      J.Nucl.Radiochem.Sci. 8, 39 (2007)

Yu.Ts.Oganessian

Study of Heavy Nuclei at FLNR (Dubna)

NUCLEAR REACTIONS 243Am(48Ca, X)Mc, E not given; measured reaction products, Eα, Iα. 268Db, 283Cn, 287Fl; deduced σ, T1/2, total kinetic energies, neutron multiplicities. Comparison with available data. The Gas-Filled Recoil Separator (DGFRS).

doi: 10.14494/jnrs2000.8.39
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2007PE02      Eur.Phys.J. A 31, 185 (2007)

Yu.E.Penionzhkevich, R.A.Astabatyan, N.A.Demekhina, G.G.Gulbekian, R.Kalpakchieva, A.A.Kulko, S.M.Lukyanov, E.R.Markaryan, V.A.Maslov, Yu.A.Muzychka, Yu.Ts.Oganessian, R.V.Revenko, N.K.Skobelev, Yu.G.Sobolev, D.A.Testov, T.Zholdybaev

Excitation functions of fusion reactions and neutron transfer in the interaction of 6He with 197Au and 206Pb

NUCLEAR REACTIONS 197Au(6He, 2n), (6He, 3n), (6He, 4n), (6He, 5n), (6He, 6n), (6He, 7n), E ≈ 10-70 MeV; 206Pb(6He, 2n), E ≈ 10-26 MeV; 197Au(6He, X)194Au/196Au/198Au, E ≈ 10-70 MeV; measured excitation functions. Comparison with model predictions.

doi: 10.1140/epja/i2006-10166-9
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetF0837.


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Note: The following list of authors and aliases matches the search parameter Y.Oganessian: , Y.T.OGANESIAN, Y.T.OGANESJAN, Y.T.OGANESSIAN, Y.T.OGANESSYAN, Y.T.OGANESYAN