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Search: Author = S.N.Dmitriev

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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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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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2020HO22      Pure Appl.Chem. 92, 1387 (2020)

S.Hofmann, S.N.Dmitriev, C.Fahlander, J.M.Gates, J.B.Roberto, H.Sakai

On the discovery of new elements (IUPAC/IUPAP Report)

COMPILATION Z=101-118; compiled the discoveries of new elements.

RADIOACTIVITY 293119, 289Ts, 285Mc, 281Nh, 277Rg, 273Mt, 269Bh, 261Lr(α), 295119, 291Ts, 287Mc, 283Nh, 279Rg, 275Mt, 271Bh, 267Db(α), 297119, 293Ts, 289Mc, 285Nh, 281Rg, 299119, 295Ts, 291Mc, 287Nh, 283Rg, 279Mt, 294119, 290Ts, 286Mc, 282Nh, 278Rg, 274Mt, 270Bh, 266Db(α), 296119, 292Ts, 288Mc, 284Nh, 280Rg, 276Mt, 272Bh, 268Db(α), 298119, 294Ts, 290Mc, 286Nh, 282Rg, 278Mt, 274Bh, 270Db(α), 300119, 296Ts, 292Mc, 288Nh, 284Rg, 280Mt, 276Bh(α), 295120, 291Og, 287Lv, 283Fl, 279Cn, 275Ds, 271Hs, 267Sg(α), 297120, 293Og, 289Lv, 285Fl, 281Cn, 277Ds, 273Hs, 269Sg, 265Rf(α), 299120, 295Og, 291Lv, 287Fl, 283Cn, 279Ds(α), 299120, 295Og, 291Lv, 287Fl, 283Cn, 279Ds(α), 296120, 292Og, 288Lv, 284Fl(α), 298120, 294Og, 290Lv, 286Fl, 282Cn(α), 300120, 296Og, 292Lv, 288Fl, 284Cn(α); compiled expected decay chains of isotopes of elements 119 and 120 which could be produced in reactions with beams of the most neutron rich stable isotopes of elements from calcium to manganese and targets of 244Pu, 243Am, 248Cm, 249Bk, 249Cf, 250Cf, 251Cf, and 254Es.

doi: 10.1515/pac-2020-2926
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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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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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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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2017AK02      Eur.Phys.J. A 53, 158 (2017)

N.V.Aksenov, P.Steinegger, F.Sh.Abdullin, Y.V.Albin, G.A.Bozhikov, V.I.Chepigin, R.Eichler, V.Ya.Lebedev, A.Sh.Madumarov, O.N.Malyshev, O.V.Petrushkin, A.N.Polyakov, Y.A.Popov, A.V.Sabelnikov, R.N.Sagaidak, I.V.Shirokovsky, M.V.Shumeiko, G.Ya.Starodub, Y.S.Tsyganov, V.K.Utyonkov, A.A.Voinov, G.K.Vostokin, A.V.Yeremin, S.N.Dmitriev

On the volatility of nihonium (Nh, Z = 113)

RADIOACTIVITY 288,289Mc(α)[from 243Am(48Ca, xn)]; measured Nh (Z=113) decay chains using Gas-Filled Recoil Separator with gas-phase chromatographic separation (JINR Dubna); deduced large retention of elemental Nh on teflon surface from non-observation of Nh decays.

doi: 10.1140/epja/i2017-12348-8
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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
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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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2015KA43      Phys.Atomic Nuclei 78, 757 (2015)

S.A.Karamian, J.J.Carroll, N.V.Aksenov, Yu.A.Albin, A.G.Belov, G.A.Bozhikov, S.N.Dmitriev, G.Ya.Starodub

Production of isotopes and isomers with irradiation of Z = 47-50 targets by 23-MeV bremsstrahlung

NUCLEAR REACTIONS Ag, Sn(γ, X)106Ag/108Ag/113In/115In/117In/113Cd/123Sn, E<23 MeV; measured reaction products, Eγ, Iγ; deduced relative and partial yields of isomeric and ground states.

doi: 10.1134/S1063778815060113
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2015TE07      Nucl.Phys. A944, 177 (2015)

G.M.Ter-Akopian, S.N.Dmitriev

Searches for superheavy elements in nature: Cosmic-ray nuclei; spontaneous fission

doi: 10.1016/j.nuclphysa.2015.09.004
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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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2014DM01      Mendeleev Commun. 24, 253 (2014)

S.N.Dmitriev, N.V.Aksenov, Y.V.Albin, G.A.Bozhikov, M.L.Chelnokov, V.I.Chepygin, R.Eichler, A.V.Isaev, D.E.Katrasev, V.Y.Lebedev, O.N.Malyshev, O.V.Petrushkin, L.S.Porobanuk, M.A.Ryabinin, A.V.Sabelnikov, E.A.Sokol, A.V.Svirikhin, G.Ya.Starodub, I.Usoltsev, G.K.Vostokin, A.V.Yeremin

Pioneering experiments on the chemical properties of element 113

NUCLEAR REACTIONS 243Am(48Ca, X)284Nh/285Nh, E=242 MeV; measured reaction products, Eα, Iα; deduced yields.

RADIOACTIVITY 288Mc, 284Nh, 280Rg, 276Mt, 272Bh(α), 268Db(SF); measured decay products, Eα, Iα; deduced α-particle energies, T1/2.

doi: 10.1016/j.mencom.2014.09.001
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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
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2014ZA08      Nucl.Instrum.Methods Phys.Res. B336, 74 (2014)

V.I.Zagrebaev, Yu.G.Teterev, G.V.Mishinsky, V.I.Zhemenik, S.L.Bogomolov, A.G.Belov, S.V.Mitrofanov, S.N.Dmitriev

Production of 6He by bremsstrahlung of electron beam

NUCLEAR REACTIONS 7Li(γ, p), E=22 MeV; measured reaction products; deduced yields.

doi: 10.1016/j.nimb.2014.07.004
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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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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
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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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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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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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2011KA19      Nucl.Instrum.Methods Phys.Res. A646, 87 (2011)

S.A.Karamian, J.J.Carroll, N.V.Aksenov, Y.A.Albin, G.A.Bozhikov, S.N.Dmitriev, G.Y.Starodub, G.K.Vostokin

Production of isomers in compound and transfer reactions with 4He ions

NUCLEAR REACTIONS 176Yb, Lu(α, xn), (α, X)175Yb/171Lu/172Lu/173Lu/174Lu/177Lu/171Hf/172Hf/173Hf/175Hf/178Hf/179Hf/175Ta/176Ta/177Ta, E=35 MeV; measured Eγ, Iγ; deduced yields, σ, isomer to ground state ratios. Comparison with Fermi-gas model within the formalism of Jackson-Sikkeland calculations.

doi: 10.1016/j.nima.2011.03.010
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2011MA34      Appl.Radiat.Isot. 69, 965 (2011)

O.D.Maslov, G.Ya.Starodub, G.K.Vostokin, M.V.Gustova, S.N.Dmitriev, V.N.Shvetsov, Z.Szucs, D.Jansen, J.R.Zeevaart

Production of 117mSn with high specific activity by cyclotron

NUCLEAR REACTIONS 116Cd(α, 3n), (α, X)113Sn/117Sn/111In/114In/116In/115Cd, E=35 MeV; measured Eγ, Iγ; deduced new method for production of 117mSn. Chemical separation.

doi: 10.1016/j.apradiso.2011.02.031
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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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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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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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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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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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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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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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2007ST18      Nucl.Phys. A787, 388c (2007)

N.J.Stoyer, J.H.Landrum, P.A.Wilk, K.J.Moody, J.M.Kenneally, D.A.Shaughnessy, M.A.Stoyer, J.F.Wild, R.W.Lougheed, S.N.Dmitriev, Yu.Ts.Oganessian, S.V.Shishkin, N.V.Aksenov, E.E.Tereshatov, G.A.Bozhikov, G.K.Vostokin, V.K.Utyonkov, A.A.Yeremin

Chemical Identification of a Long-Lived Isotope of Dubnium, a Descendant of Element 115

NUCLEAR REACTIONS 238U(48Ca, 3n), E=247 MeV; measured super heavy element yield, Eα, Iα; analyzed production σ. Detailed chemical analysis procedure given.

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: 10.1016/j.nuclphysa.2006.12.060
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2006SA58      Radiochemistry 48, 191 (2006)

A.V.Sabelnikov, O.D.Maslov, L.G.Molokanova, M.V.Gustova, S.N.Dmitriev

Preparation of 99Mo and 99mTc by 100Mo(γ, n) photonuclear reaction on an electron accelerator, MT-25 microtron

NUCLEAR REACTIONS 100Mo(γ, n), E<25 MeV; measured reaction products, X-rays; deduced radiation yield. Radiochemical purification.

doi: 10.1134/s1066362206020172
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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
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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
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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
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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
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2003RA23      Czech.J.Phys. (Supplement) 53, A339 (2003)

D.N.Rassadov, Yu.Ts.Oganessian, S.N.Dmitriev, O.D.Maslov, A.V.Sabelnikov, A.G.Belov, A.F.Novgorodov

Determination of uranium photofission fragment (Xe, Sn, Sb, Te) yields over chlorine in on-line

NUCLEAR REACTIONS 238U(γ, F)123Sn/127Sn/128Sn/129mSn/130Sn/131Sn/132Sn/128Sb/129Sb/131Sb/131Te/134Te/138Xe/139Xe, E < 25 MeV; measured yields. Application to radioactive beam production discussed.

doi: 10.1007/s10582-003-0043-6
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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
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2002OG05      Nucl.Phys. A701, 87c (2002)

Yu.Ts.Oganessian, S.N.Dmitriev, J.Kliman, O.A.Maslov, G.Ya.Starodub, A.G.Belov, S.P.Tretiakova

RIB Production with Photofission of Uranium

doi: 10.1016/S0375-9474(01)01553-6
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2001YA19      Radiochim.Acta 89, 743 (2001)

A.B.Yakushev, G.V.Buklanov, M.L.Chelnokov, V.I.Chepigin, S.N.Dmitriev, V.A.Gorshkov, S.Hubener, V.Ya.Lebedev, O.N.Malyshev, Yu.Ts.Oganessian, A.G.Popeko, E.A.Sokol, S.N.Timokhin, A.Turler, V.M.Vasko, A.V.Yeremin, I.Zvara

First attempt to chemically identify element 112

NUCLEAR REACTIONS Nd, U(48Ca, xn), E=234 MeV; measured radiochemical yields; deduced element 112 production σ upper limit.


2000GA60      Part. and Nucl., Lett. 103, 5 (2000)

Yu.P.Gangrsky, S.N.Dmitriev, V.I.Zhemenik, Ya.Kliman, G.V.Mishinsky, Kh.S.Norov, Yu.Ts.Oganessian, Yu.E.Penionzhkevich, O.Szollos

Independent Yields of Xe Isotopes at Photofission of 232Th and 238U

NUCLEAR REACTIONS 232Th, 238U(γ, F)138Xe/139Xe/140Xe/141Xe/142Xe/143Xe, E=25 MeV bremsstrahlung; measured fission fragment yields.


1996TA03      Appl.Radiat.Isot. 47, 127 (1996)

R.J.Talbot, D.Newton, S.N.Dmitriev

The Half-Life of 237Pu: A rebuttal of Baba's criticism

RADIOACTIVITY 237Pu(EC), (α); analyzed T1/2 data measurements.

doi: 10.1016/0969-8043(95)00242-1
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1995DM04      Appl.Radiat.Isot. 46, 307 (1995)

S.N.Dmitriev, Yu.Ts.Oganessian, G.Ya.Starodub, S.V.Shishkin, G.V.Buklanov, Yu.P.Kharitonov, A.F.Novgorodov, Yu.V.Yushkevich, D.Newton, R.J.Talbot

Ultra-Pure 236Pu and 237Pu for Environmental and Biomedical Research

NUCLEAR REACTIONS 235U(α, 3n), E=36 MeV; 235U(α, 2n), E=27 MeV; measured residual yield, purity. Electromagnetic mass separation, α-spectrometric methods.

doi: 10.1016/0969-8043(94)00134-L
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1994TA25      Appl.Radiat.Isot. 45, 743 (1994)

R.J.Talbot, D.Newton, S.N.Dmitriev

The Half-Life of 237Pu

RADIOACTIVITY 237Pu(α) [from 235U(α, X), E=25 MeV]; measured K X-ray spectra; deduced T1/2.

doi: 10.1016/0969-8043(94)90123-6
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1993DM02      Appl.Radiat.Isot. 44, 1097 (1993)

S.N.Dmitriev, Yu.Ts.Oganessian, G.V.Buklanov, Yu.P.Kharitonov, A.F.Novgorodov, L.I.Salamatin, G.Ya.Starodub, S.V.Shishkin, Yu.V.Yushkevich, D.Newton

Production of 237Pu with High Radiochemical Purity

NUCLEAR REACTIONS 235U(α, 2n), E=22-26.5 MeV; measured Eα, Iα; deduced high radiochemical purity 237Pu production method. Mass separation techniques.

RADIOACTIVITY 237Pu(α) [from 235U(α, 2n), E=22-26.5 MeV]; measured Eα, Iα; deduced high radiochemical purity 237Pu production method. Mass separation techniques.

doi: 10.1016/0969-8043(93)90112-N
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