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NSR database version of May 24, 2024.

Search: Author = M.Chelnokov

Found 67 matches.

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2024MU02      J.Radioanal.Nucl.Chem. 333, 1559 (2024)

R.S.Mukhin, A.V.Isaev, A.V.Andreev, M.L.Chelnokov, V.I.Chepigin, H.M.Devaraja, B.Gall, K.Hauschild, I.N.Izosimov, A.A.Kuznetsova, A.Lopez-Martens, O.N.Malyshev, A.G.Popeko, Yu.A.Popov, A.Rahmatinejad, B.Sailaubekov, T.M.Shneidman, E.A.Sokol, A.I.Svirikhin, M.S.Tezekbayeva, A.V.Yeremin

Analysis of the shape of multiplicity distributions of prompt neutrons emitted in spontaneous fission

RADIOACTIVITY 253,254,255,256,257,258,259,260,261,262Rf, 252,253,254,255,256,257,258,259,260,261,262Lr, 249,250,251,252,253,254,255,256,257,258,259,260,261No, 245,246,247,248,249,250,251,252,253,254,255,256,257,258,259Md, 243,244,245,246,247,248,249,250,251,252,253,254,255,256,257,258,259Fm(SF); analyzed available data; deduced the prompt neutron multiplicity distribution (PNMD) emitted is the spontaneous fission (SF), shape of the PNMD helps to achieve the information according the dynamic of the SF.

doi: 10.1007/s10967-023-09164-0
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2023CH05      Phys.Rev. C 107, 014326 (2023)

R.Chakma, A.Lopez-Martens, K.Hauschild, A.V.Yeremin, O.N.Malyshev, A.G.Popeko, Yu.A.Popov, A.I.Svirikhin, V.I.Chepigin, E.A.Sokol, A.V.Isaev, A.A.Kuznetsova, M.L.Chelnokov, M.S.Tezekbayeva, I.N.Izosimov, O.Dorvaux, B.Gall, Z.Asfari

Investigation of isomeric states in 255Rf

NUCLEAR REACTIONS 207Pb(50Ti, 2n), E=253 MeV; measured reaction products, evaporation residues (ER), Eγ, Iγ, ce, Eβ, (ER)γ-coin, ceγ-coin, (ER)←ce)-coin; deduced isomer levels population, isomeric ratios. 255Rf; deduced levels, J, π, δ, T1/2 of newly discovered isomeric states, high-spin states, configurations of isomeric states. Evaporation residues separated using the velocity filter SHELS and transported to the focal-plane detection setup - GABRIELA detector array for γ and internal conversion electrons at FLNR (JINR, Dubna).

RADIOACTIVITY 255Rf(α), (SF)[from (50Ti, 2n), E=253 MeV]; measuredEα, Iα, fission fragments; deduced T1/2 of α-decay and fission, branching ratios. 255Rf(β+)(EC); deduced upper limit of β+/EC decay branch. Decay of implanted evaporation residues measured by large-area double-sided silicon strip detector (DSSD).

doi: 10.1103/PhysRevC.107.014326
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2023IS03      Phys.Lett. B 843, 138008 (2023)

A.V.Isaev, R.S.Mukhin, A.V.Andreev, Z.Asfari, M.L.Chelnokov, V.I.Chepigin, H.M.Devaraja, O.Dorvaux, B.Gall, K.Hauschild, I.N.Izosimov, A.A.Kuznetsova, A.Lopez-Martens, O.N.Malyshev, A.G.Popeko, Yu.A.Popov, A.Rahmatinejad, B.Sailaubekov, T.M.Shneidman, E.A.Sokol, A.I.Svirikhin, M.S.Tezekbayeva, A.V.Yeremin, N.I.Zamyatin

Structure of the prompt neutron multiplicity distribution in the spontaneous fission of 256Rf

RADIOACTIVITY 256Rf(SF), (α) [from 208Pb(50Ti, X), E=237 MeV];measured fission products, En, In, TOF; deduced neutron multiplicity distribution, alpha decay branching ratio and T1/2. Prompt neutron multiplicity study in the superheavy element region. SHELS separator, U-400 cyclotron, the Flerov laboratory at JINR.

doi: 10.1016/j.physletb.2023.138008
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2022HA04      Eur.Phys.J. A 58, 6 (2022)

K.Hauschild, A.Lopez-Martens, R.Chakma, M.L.Chelnokov, V.I.Chepigin, A.V.Isaev, I.N.Izosimov, D.E.Katrasev, A.A.Kuznetsova, O.N.Malyshev, A.G.Popeko, E.A.Sokol, A.I.Svirikhin, M.S.Tezekbayeva, A.V.Yeremin, Z.Asfari, O.Dorvaux, B.J.P.Gall, K.Kessaci, D.Ackermann, J.Piot, P.Mosat, B.Andel

Alpha-decay spectroscopy of 257Rf

RADIOACTIVITY 257Rf(α), (IT) [from 208Pb(50Ti, n), E=240-245 MeV]; measured decay products, Eα, Iα, Eγ, Iγ; deduced α-particles energies and intensities, T1/2, J, π, decay scheme. Nilsson configurations. The detectorarray GABRIELA at the FLNR, Dubna.

doi: 10.1140/epja/s10050-021-00657-8
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2022IS05      Eur.Phys.J. A 58, 108 (2022)

A.V.Isaev, R.S.Mukhin, A.V.Andreev, M.A.Bychkov, M.L.Chelnokov, V.I.Chepigin, H.M.Devaraja, O.Dorvaux, M.Forge, B.Gall, K.Hauschild, I.N.Izosimov, K.Kessaci, A.A.Kuznetsova, A.Lopez-Martens, O.N.Malyshev, A.G.Popeko, Yu.A.Popov, A.Rahmatinejad, B.Sailaubekov, T.M.Shneidman, E.A.Sokol, A.I.Svirikhin, D.A.Testov, M.S.Tezekbayeva, A.V.Yeremin, N.I.Zamyatin, K.Sh.Zhumadilov

Prompt neutron emission in the spontaneous fission of 246Fm

RADIOACTIVITY 246Fm(SF) [from 208Pb(40Ar, X), E=183 MeV]; measured decay products, En, In; deduced neutron yields, nubar, spontaneous fission branching ratio, T1/2. Tikhonov method of statistical regularisation. FLNR JINR using the SHELS separator and the SFiNx detection system, the U-400 cyclotron.

doi: 10.1140/epja/s10050-022-00761-3
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset41751. Data from this article have been entered in the XUNDL database. For more information, click here.


2022LO03      Phys.Rev. C 105, L021306 (2022)

A.Lopez-Martens, K.Hauschild, A.I.Svirikhin, Z.Asfari, M.L.Chelnokov, V.I.Chepigin, O.Dorvaux, M.Forge, B.Gall, A.V.Isaev, I.N.Izosimov, K.Kessaci, A.A.Kuznetsova, O.N.Malyshev, R.S.Mukhin, A.G.Popeko, Yu.A.Popov, B.Sailaubekov, E.A.Sokol, M.S.Tezekbayeva, A.V.Yeremin

Fission properties of 253Rf and the stability of neutron-deficient Rf isotopes

RADIOACTIVITY 253Rf(SF)(α) [from 204Pb(50Ti, n), E=244 MeV];249No(α)[from 253Rf(SF)(α)];245Fm(α)[from 249No(α)]; 251No(SF)(α)[from 204Pb(48Ca, n); measured fission fragments, Eγ, Iγ, Eα, Iα, (implant)α-coin, (implant)γ-coin. 253Rf; deduced levels, J, π, T1/2 for two isomeric fissioning states, branching ratio for α-decay. 251No; deduced T1/2. 252Rf; deduced T1/2 based on extracted hindrance factor and systematics. U400 Cyclotron at the Flerov Laboratory of Nuclear Reactions in Dubna with separator for heavy element spectroscopy (SHELS). GABRIELA detector consisting of DSSD and HPGe detectors.

NUCLEAR REACTIONS 204Pb(50Ti, n), E=244 MeV; measured fission fragments from 253Rf decay, Eα, Iα; deduced σ.

doi: 10.1103/PhysRevC.105.L021306
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Data from this article have been entered in the XUNDL database. For more information, click here.


2022SA09      Phys.Rev. C 105, 024604 (2022)

R.N.Sagaidak, M.L.Chelnokov, V.I.Chepigin, V.A.Gorshkov, O.N.Malyshev, A.G.Popeko, A.I.Svirikhin, A.V.Yeremin

Production of evaporation residues in the 16O + 208Pb and 48Ca + 176Yb reactions

NUCLEAR REACTIONS 208Pb(16O, xn), E*=19-78 MeV; 176Yb(48Ca, xn), E*=19-62 MeV;measured reaction products, evaporation residues, Eα, Ια, αα-coin, (implants)α-coin; deduced σ(E), compound nucleus formation probability. Comparison with previous experimental data. Recoil separator VASSILISSA at U400 cyclotron (JINR).

doi: 10.1103/PhysRevC.105.024604
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2022TE01      Eur.Phys.J. A 58, 52 (2022)

M.S.Tezekbayeva, A.V.Yeremin, A.I.Svirikhin, A.Lopez-Martens, M.L.Chelnokov, V.I.Chepigin, A.V.Isaev, I.N.Izosimov, A.V.Karpov, A.A.Kuznetsova, O.N.Malyshev, R.S.Mukhin, A.G.Popeko, Yu.A.Popov, V.A.Rachkov, B.S.Sailaubekov, E.A.Sokol, K.Hauschild, H.Jacob, R.Chakma, O.Dorvaux, M.Forge, B.Gall, K.Kessaci, B.Andel, S.Antalic, A.Bronis, P.Mosat

Study of the production and decay properties of neutron-deficient nobelium isotopes

RADIOACTIVITY 249,250,250m,251No(α)[from 204Pb(48Ca, xn), E=225.2, 230.0, 237.0, 242.0, 246.0 MeV]; 245Fm, 245Es, 241Cf(α)[from 249No α decay]; measured decay products, Eα, Iα, (evaporation residues)α-corelations using SHELS separator and the GABRIELA detector system at FLNR-JINR-Dubna; deduced T1/2, production σ for 249No, an upper limit on the fission branch. 245Fm(EC), (β+); deduced branching ratio for ϵ+β+ decay mode. Comparison with previous experimental results.

doi: 10.1140/epja/s10050-022-00707-9
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Data from this article have been entered in the XUNDL database. For more information, click here.


2021IS09      Phys.Part. and Nucl.Lett. 18, 449 (2021)

A.V.Isaev, A.V.Andreev, M.L.Chelnokov, V.I.Chepigin, I.N.Izosimov, A.A.Kuznetsova, O.N.Malyshev, R.S.Mukhin, A.G.Popeko, Y.A.Popov, T.M.Shneidman, E.A.Sokol, A.I.Svirikhin, M.S.Tezekbayeva, A.V.Yeremin, N.I.Zamyatin, P.Brionnet, O.Dorvaux, B.Gall, K.Kessaci, A.Sellam, K.Hauschild, A.Lopez-Martens, S.Antalic, P.Mosat

Comparative Study of Spontaneous-Fission Characteristics of 252No and 254No Isotopes

RADIOACTIVITY 252,254No(SF) [from 206,208Pb(48Ca, X), E=215 MeV]; measured decay products; deduced T1/2, total kinetic energies of fission fragments, and prompt-neutron multiplicities (nubars). SHELS separator, Flerov Laboratory of Nuclear Reactions (JINR).

doi: 10.1134/S1547477121040087
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset41741.


2021KE10      Phys.Rev. C 104, 044609 (2021)

K.Kessaci, B.J.P.Gall, O.Dorvaux, A.Lopez-Martens, R.Chakma, K.Hauschild, M.L.Chelnokov, V.I.Chepigin, M.Forge, A.V.Isaev, I.N.Izosimov, D.E.Katrasev, A.A.Kuznetsova, O.N.Malyshev, R.Mukhin, J.Piot, A.G.Popeko, Yu.A.Popov, E.A.Sokol, A.I.Svirikhin, M.S.Tezekbayev, A.V.Yeremin

Evidence of high-K isomerism in 256102No154

RADIOACTIVITY 256,256mNo(α), 256mNo(IT)[from 238U(22Ne, 4n), E=113, 116 MeV, followed by separation of evaporation residues (ERs) using the Super Heavy ELements Separator (SHELS) at the U400 cyclotron of FLNR-JINR-Dubna]; measured Eα, Iα, Eγ, Iγ, conversion electrons, (ce)γ-coin, (recoils)α-correlations, half-lives of decays of 256No and 256mNo using the GABRIELA apparatus with time-of-flight (TOF) system, a double-sided silicon strip detector (DSSD), eight silicon strip detectors, five Compton-suppressed HPGe detectors, and a clover HPGe detector. 256No; deduced level, J, π, Kπ, first evidence of an isomer in 256No, high-K isomerism, two- and four-quasiparticle Nilsson configurations; schematics of two quasiparticles states on neutron and proton single-particle levels, based on experimental sequences of states in neighboring isotones and isotopes.

doi: 10.1103/PhysRevC.104.044609
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Data from this article have been entered in the XUNDL database. For more information, click here.


2021SV02      Phys.Part. and Nucl.Lett. 18, 445 (2021)

A.I.Svirikhin, A.V.Yeremin, N.I.Zamyatin, I.N.Izosimov, A.V.Isaev, A.A.Kuznetsova, O.N.Malyshev, R.S.Mukhin, A.G.Popeko, Y.A.Popov, E.A.Sokol, B.Sailaubekov, M.S.Tezekbayeva, M.L.Chelnokov, V.I.Chepigin, B.Andel, S.Antalic, A.Bronis, P.Mosat, B.Gall, O.Dorvaux, A.Lopez-Martens, K.Hauschild

The New 249No Isotope

RADIOACTIVITY 249No, 245Fm(α) [from 204Pb(48Ca, X), E=225.4 MeV]; measured decay products, Eα, Iα; deduced Q-values, T1/2, an upper limit on the fission branch. Comparison with available data. SHELS separator using the GABRIELA detector array.

doi: 10.1134/s1547477121040154
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2021TE08      Bull.Rus.Acad.Sci.Phys. 85, 1167 (2021)

M.S.Tezekbayeva, A.V.Yeremin, O.N.Malyshev, A.V.Isaev, R.S.Mukhin, A.A.Kuznetsova, A.G.Popeko, Yu.A.Popov, A.I.Svirikhin, E.A.Sokol, M.L.Chelnokov, V.I.Chepigin, A.Lopez-Martens, K.Hauschild, O.Dorvaux, B.Gall, B.S.Sailaubekov

Spectroscopy of the Decay Properties of Transfermium Isotopes in Dubna

RADIOACTIVITY 256Rf(α), (SF) [from 208Pb(50Ti, 2n)256Rf, E not given]; 249,250,252,254No(α) [from 204,206,208Pb(48Ca, X)252No/254No/256No, E not given]; measured decay products, Eα, Iα, Eγ, Iγ, Eβ, Iβ; deduced level energies, J, π, T1/2. U-400 cyclotron at the Flerov Nuclear Reactions Laboratory of the Joint Institute for Nuclear Research and the SHELS kinematic separator.

doi: 10.3103/S1062873821100257
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2020KU23      Bull.Rus.Acad.Sci.Phys. 84, 932 (2020)

A.A.Kuznetsova, A.V.Yeremin, A.Lopez-Martens, K.Hauschild, A.G.Popeko, O.N.Malyshev, V.I.Chepigin, A.I.Svirikhin, A.V.Isaev, Yu.A.Popov, M.L.Chelnokov, O.Dorvaux, B.Gall, M.S.Tezekbayeva

Detailed Study of the Radioactive Decay Properties of No, Rf, and Db Isotopes

RADIOACTIVITY 256,258Rf(α), 250,252,254No, 256,257,258Db(SF); measured decay products, Eα, Iα; deduced T1/2, production σ.

doi: 10.3103/S1062873820080225
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2020YE02      Phys.Atomic Nuclei 83, 503 (2020)

A.V.Yeremin, A.G.Popeko, O.N.Malyshev, A.V.Isaev, A.A.Kuznetsova, Yu.A.Popov, A.I.Svirikhin, E.A.Sokol, M.S.Tezekbayeva, M.L.Chelnokov, V.I.Chepigin, A.Lopez-Martens, K.Hauschild, O.Dorvaux, B.Gall, J.Piot, S.Antalic, P.Mosat, D.Tonev, E.Stefanova

Spectroscopy of the Isotopes of Transfermium Elements in Dubna: Current Status and Prospects

NUCLEAR REACTIONS 242Pu(22Ne, X)264Rf, 238U(22Ne, X)260No, 248Cm(22Ne, X)270Sg, E not given; analyzed available data; deduced opportunities.

RADIOACTIVITY 256Rf(α), (SF) [from 208Pb(50Ti, X)256Rf, E not given]; analyzed available data; deduced T1/2, branching ratios.

doi: 10.1134/S1063778820040109
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2019GE02      Phys.Rev. C 99, 034615 (2019)

J.Gehlot, A.M.Vinodkumar, N.Madhavan, S.Nath, A.Jhingan, T.Varughese, T.Banerjee, A.Shamlath, P.V.Laveen, M.Shareef, P.Jisha, P.Sandya Devi, G.N.Jyothi, M.M.Hosamani, I.Mazumdar, V.I.Chepigin, M.L.Chelnokov, A.V.Yeremin, A.K.Sinha, B.R.S.Babu

Evaporation residue cross-section measurements for 16O+203, 205Tl

NUCLEAR REACTIONS 203,205Tl(16O, X), E=82-113 MeV; measured reaction products, time of flight, σ(E) of evaporation residues (ERs), and individual exit channel σ(E) using gas-filled HYbrid Recoil Analyzer (HYRA) for separation of ERs, two silicon detectors and a multiwire proportional counter (MWPC) to detect the ERs at the 15 UD Pelletron accelerator facility of IUAC, New Delhi; simulated ER angular distributions using the code PACE4. 209Bi(12C, X), E(cm)=50-115 MeV; 208Pb(12C, X), (16O, X), (19F, X); 203,205Tl(16O, X), E=82-113 MeV; 204Pb(16O, X); 209Bi(12C, X); comparison of the present and previously measured reduced σ(E) with statistical model calculations using HIVAP code.

doi: 10.1103/PhysRevC.99.034615
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD6363.


2019LO08      Phys.Lett. B 795, 271 (2019)

A.Lopez-Martens, A.V.Yeremin, M.S.Tezekbayeva, Z.Asfari, P.Brionnet, O.Dorvaux, B.Gall, K.Hauschild, D.Ackermann, L.Caceres, M.L.Chelnokov, V.I.Chepigin, M.V.Gustova, A.V.Isaev, A.V.Karpov, A.A.Kuznetsova, J.Piot, O.N.Malyshev, A.G.Popeko, Yu.A.Popov, K.Rezynkina, H.Savajols, A.I.Svirikhin, E.A.Sokol, P.Steinegger

Measurement of proton-evaporation rates in fusion reactions leading to transfermium nuclei

NUCLEAR REACTIONS 209Bi(50Ti, X)256Db/257Db/258Db, E=255, 265, 275 MeV; measured reaction products, Eα, Iα; deduced σ.

doi: 10.1016/j.physletb.2019.06.010
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2019SV01      Phys.Part. and Nucl.Lett. 16, 768 (2019)

A.I.Svirikhin, A.V.Andreev, A.V.Yeremin, N.I.Zamyatin, I.N.Izosimov, A.V.Isaev, A.N.Kuznetsov, A.A.Kuznetsova, O.N.Malyshev, A.G.Popeko, Y.A.Popov, E.A.Sokol, M.S.Tezekbayeva, M.L.Chelnokov, V.I.Chepigin, T.M.Schneidman, B.Andel, S.Antalic, A.Bronis, P.Mosat, B.Gall, O.Dorvaux, B.M.Retailleau, K.Hauschild, A.Lopez-Martenz, P.Chauveau, E.Stefanova, D.Tonev

Prompt Neutrons from Spontaneous 254Rf Fission

doi: 10.1134/S1547477119060311
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2019YE03      Phys.Part. and Nucl.Lett. 16, 224 (2019)

A.V.Yeremin, M.S.Tezekbayeva, A.G.Popeko, O.N.Malyshev, A.Lopez-Martens, K.Hauschild, O.Dorvaux, B.Gall, A.V.Isaev, A.V.Karpov, A.N.Kuznetsov, A.A.Kuznetsova, Yu.A.Popov, A.I.Svirikhin, E.A.Sokol, M.L.Chelnokov, V.I.Chepigin, P.Moshat

Measurement of the Production Cross Sections for Isotopes of Transfermium Elements in Complete Fusion Reactions with the Subsequent Evaporation of a Proton and Neutrons

NUCLEAR REACTIONS 209Bi(50Ti, X)256Db/257Db/258Db, E=255, 265, 275 MeV; measured reaction products, Eα, Iα; deduced σ.

doi: 10.1134/S1547477119030099
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2018RE07      Phys.Rev. C 97, 054332 (2018)

K.Rezynkina, A.Lopez-Martens, K.Hauschild, I.Deloncle, S.Peru, P.Brionnet, M.L.Chelnokov, V.I.Chepigin, O.Dorvaux, F.Dechery, H.Faure, B.Gall, A.V.Isaev, I.N.Izosimov, D.E.Katrasev, A.N.Kuznetsov, A.A.Kuznetsova, O.N.Malyshev, A.G.Popeko, Y.A.Popov, E.A.Sokol, A.I.Svirikhin, A.V.Yeremin

Influence of octupole vibration on the low-lying structure of 251Fm and other heavy N = 151 isotones

RADIOACTIVITY 255No(α)[from 48Ca(208Pb, n), E=220 MeV and from ϵ decay of 255Lr produced in 48Ca(209Bi, 2n), E=214 MeV using the VASSILISSA separator with the GABRIELA spectrometer at FLNR-JINR, Dubna]; measured Eγ, Iγ, x rays, E(ce), I(ce), Eα, αγ-coin, (ce)α-coin, isomer half-life by γ(t) using implantation silicon detector strips for conversion electrons and α detection, and HPGe detector array for γ detection. 251Fm; deduced levels, J, π, conversion coefficients, multipolarities, B(M2), B(E3), and E3/M2 mixing ratio of 5/2+ to g.s transition. Comparison with previous experimental results, and with theoretical calculations. Systematics of low-lying excited states in 245Pu, 247Cm, 249Cf, 251Fm, 253No, 255Rf.

NUCLEAR STRUCTURE 246,247Cm, 248,249Cf, 250,251Fm, 252,253No, 254Rf; calculated energies of 2- phonon levels in even-A, and 5/2+ states from 2- phonon levels built on 9/2- ground states in odd-A nuclei, B(E3) using QRPA with Gogny D1M parametrization, configuration amplitudes for odd-A isotopes from QPM with Woods-Saxon potential. Comparison with experimental data.

doi: 10.1103/PhysRevC.97.054332
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Data from this article have been entered in the XUNDL database. For more information, click here.


2018SV02      Bull.Rus.Acad.Sci.Phys. 82, 632 (2018)

A.I.Svirikhin, A.V.Yeremin, A.V.Andreev, I.N.Izosimov, A.V.Isaev, A.N.Kuznetsov, A.A.Kuznetsova, O.N.Malyshev, A.G.Popeko, Y.A.Popov, E.A.Sokol, M.L.Chelnokov, V.I.Chepigin, T.M.Schneidman, B.Gall, O.Dorvaux, P.Brione, K.Hauschild, A.Lopez-Martenz, K.Rezynkina, S.Mullins, P.Jones, P.Mosat, B.Andel, Z.Kalaninova, M.Z.Asfari, N.Yoshihiro, J.Piot, E.Stefanova, D.Tonev

Short-Lived Isotopes of Transfermium Elements: Studying Characteristics of Spontaneous Fissioning

RADIOACTIVITY 256Rf, 250,252No(SF)[reaction created]; calculated formation of isotopes vs energy; compared with data (short- and long-lived isomers separately).

COMPILATION 236,238,240,242,244Pu, 242,244,246,248,250Cm, 249Bk, 246,250,252,254Cf, 244,246,256,258Fm, 250,252No, 256Rf, 258,260Md, 268Db(SF); 250,250m,252No; compiled average number of emitted neutrons accompanying spontaneous fission vs TKE; calculated spontaneous fission fragments TKE; compared with data.

doi: 10.3103/S1062873818060308
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2017SV02      Phys.Part. and Nucl.Lett. 14, 571 (2017)

A.I.Svirikhin, A.V.Andreev, A.V.Yeremin, I.N.Izosimov, A.V.Isaev, A.N.Kuznetsov, A.A.Kuznetsova, O.N.Malyshev, A.G.Popeko, Y.A.Popov, E.A.Sokol, M.L.Chelnokov, V.I.Chepigin, T.M.Schneidman, B.Gall, O.Dorvaux, P.Brione, K.Hauschild, A.Lopez-Martens, K.Rezynkina, S.Mullins, P.Jones, P.Mosat

Characteristics of spontaneous fission of 250No

NUCLEAR REACTIONS 204Pb(48Ca, xn), E=410-470 MeV; measured neutrons, fission fragments kinetic energy, TKEL, short-lived fragments; deduced σ vs E. 250No(SF), SF T1/2, average neutron multiplicity separately for each T1/2. 236,238,240,242,244Pu, 242,244,246,248,250Cm, 249Bk, 246,250,252,254Cf, 244,246,254,256,258Fm, 250,250m,252No, 256Rf, 258,260Md, 268Db; deduced, compiled systematics of average neutron multiplicity from SF (Spontaneous Fission) vs nucleus.

doi: 10.1134/S1547477117040161
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetF1329.


2016SV02      Phys.Part. and Nucl.Lett. 13, 480 (2016)

A.I.Svirikhin, A.V.Yeremin, I.N.Izosimov, A.V.Isaev, A.N.Kuznetsov, O.N.Malyshev, A.G.Popeko, Yu.A.Popov, E.A.Sokol, M.L.Chelnokov, V.I.Chepigin, B.Andel, M.Z.Asfari, B.Gall, N.Yoshihiro, Z.Kalaninova, S.Mullins, J.Piot, E.Stefanova, D.Tonev

Spontaneous fission of 256Rf, new data

RADIOACTIVITY 256Rf(SF)[from 208Pb(50Ti, 2n), E=237 MeV]; measured nuclei, Eα, Iα, fission fragments, En, In; deduced fission neutron multiplicity, spontaneous fission T1/2.

COMPILATION A=236-268; compiled spontaneous fission neutron multiplicity vs mass number.

doi: 10.1134/S1547477116040129
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2015RE01      Acta Phys.Pol. B46, 623 (2015)

K.Rezynkina, K.Hauschild, A.Lopez-Martens, O.Dorvaux, B.Gall, F.Dechery, H.Faure, A.V.Yeremin, M.L.Chelnokov, V.I.Chepigin, A.V.Isaev, I.N.Izosimov, D.E.Katrasev, A.N.Kuznetsov, A.A.Kuznetsova, O.N.Malyshev, A.G.Popeko, Y.A.Popov, E.A.Sokol, A.I.Svirikhin, J.Piot, J.Rubert

First Experimental Tests of SHELS: a New Heavy Ion Separator at the JINR

NUCLEAR REACTIONS 208Pb(40Ar, xn)245Fm/246Fm, 164Dy(50Ti, xn)209Ra/210Ra/211Ra, E<220 MeV; measured reaction products, Eγ, Iγ; deduced yields.

doi: 10.5506/APhysPolB.46.623
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2015SV02      Bull.Rus.Acad.Sci.Phys. 79, 442 (2015); Izv.Akad.Nauk RAS, Ser.Fiz 79, 483 (2015)

A.I.Svirikhin, M.Gupta, A.V.Yeremin, I.N.Izosimov, A.V.Isaev, A.N.Kuznetsov, O.N.Malyshev, S.Mullins, A.G.Popeko, E.A.Sokol, M.L.Chelnokov, V.I.Chepigin

Investigating neutron multiplicity during the spontaneous fission of short-lived isotopes (Z ≥ 100) using the VASSILISSA recoil separator

RADIOACTIVITY 244,246Fm, 252No(SF); measured decay products, En, In; deduced neutron multiplicities, total kinetic energy spectra. Comparison with systematics for the average number of spontaneous fission neutrons depending on A and Coulomb parameter Z2/A1/3.

doi: 10.3103/S1062873815040310
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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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2014LO10      Eur.Phys.J. A 50, 132 (2014)

A.Lopez-Martens, K.Hauschild, K.Rezynkina, O.Dorvaux, B.Gall, F.Dechery, H.Faure, A.V.Yeremin, M.L.Chelnokov, V.I.Chepigin, A.V.Isaev, I.N.Izosimov, D.E.Katrasev, A.N.Kuznetsov, A.A.Kuznetsova, O.N.Malyshev, A.G.Popeko, E.A.Sokol, A.I.Svirikhin, J.Piot, J.Rubert

Fine structure in the alpha decay of 224U

doi: 10.1140/epja/i2014-14132-8
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2012SV01      Phys.Part. and Nucl.Lett. 9, 24 (2012); Pisma Zh.Fiz.Elem.Chast.Atom.Yadra No.1 (171), 43 (2012)

A.I.Svirikhin, M.Gupta, A.V.Eremin, I.N.Izosimov, A.V.Isaev, A.N.Kuznetsov, O.N.Malyshev, S.Mulins, A.G.Popeko, E.A.Sokol, M.L.Chelnokov, V.I.Chepihin

Investigation into the neutron multiplicity of spontaneously fissioning short-lived heavy nuclei at the VASSILISSA separator

RADIOACTIVITY 246Fm, 248Cm(SF); measured fission products; deduced neutron multiplicity, total kinetic energy. Systematics of average neutron number per spontaneous fission event in relation to A and Z.

doi: 10.1134/S1547477112010141
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2012SV02      Eur.Phys.J. A 48, 121 (2012)

A.I.Svirikhin, A.V.Andreev, V.N.Dushin, M.L.Chelnokov, V.I.Chepigin, M.Gupta, A.V.Isaev, I.N.Izosimov, D.E.Katrasev, A.N.Kuznetsov, O.N.Malyshev, S.Mullins, A.G.Popeko, E.A.Sokol, A.V.Yeremin

The emission of prompt neutrons from the spontaneous fission of 252No and 244Fm

RADIOACTIVITY 244Fm(SF)[from 206Pb(40Ar, 2n), E≈186 MeV];252No(SF)[from 206Pb(48Ca, 2n), E≈216 MeV]; measured spontaneous fission prompt En, In using 3He-filled counters, ER, fission fragments, Eα, Iα; calculated average TKE, average neutron multiplicity; deduced neutron multiplicity distribution, average neutron multiplicity. 244Fm deduced pre-neutron TKE.

doi: 10.1140/epja/i2012-12121-7
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2011HA06      Acta Phys.Pol. B42, 605 (2011)

T.W.Hagen, A.Lopez-Martens, K.Hauschild, A.V.Belozerov, M.L.Chelnokov, V.I.Chepigin, D.Curien, O.Dorvaux, G.Drafta, B.Gall, A.Gorgen, M.Guttormsen, A.V.Isaev, I.N.Izosimov, A.P.Kabachenko, D.E.Katrasev, T.Kutsarova, A.N.Kuznetsov, A.C.Larsen, O.N.Malyshev, A.Minkova, S.Mullins, H.T.Nyhus, D.Pantelica, J.Piot, A.G.Popeko, S.Saro, N.Scintee, S.Siem, E.A.Sokol, A.I.Svirikhin, A.V.Yeremin

Spectroscopy of Transfermium Nuclei Using the GABRIELA Setup

COMPILATION 243Pu, 245Cm, 247Cf, 249Fm, 251No; compiled low-energy level properties for N=149 isotones.

doi: 10.5506/APhysPolB.42.605
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2011LO06      Nucl.Phys. A852, 15 (2011)

A.Lopez-Martens, T.Wiborg-Hagen, K.Hauschild, M.L.Chelnokov, V.I.Chepigin, D.Curien, O.Dorvaux, G.Drafta, B.Gall, A.Gorgen, M.Guttormsen, A.V.Isaev, I.N.Izosimov, A.P.Kabachenko, D.E.Katrasev, T.Kutsarova, A.N.Kuznetsov, A.C.Larsen, O.N.Malyshev, A.Minkova, S.Mullins, H.T.Nyhus, D.Pantelica, J.Piot, A.G.Popeko, S.Saro, N.Scintee, S.Siem, N.U.H.Syed, E.A.Sokol, A.I.Svirikhin, A.V.Yeremin

Spectroscopy of 253No and its daughters

NUCLEAR REACTIONS 207Pb(48Ca, 2n), (48Ca, 3n), E=220 MeV; measured Eα, Iα, Eγ, Iγ, E(ce), I(ce), αγ, α(ce)-coin; deduced ICCs, multipolarities, Qα. 253No, 249Fm; deduced levels, J, π, T1/2.

doi: 10.1016/j.nuclphysa.2011.01.012
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2010GR04      Phys.Rev. C 81, 061601 (2010)

R.Graeger, D.Ackermann, M.Chelnokov, V.Chepigin, Ch.E.Dullmann, J.Dvorak, J.Even, A.Gorshkov, F.P.Hessberger, D.Hild, A.Hubner, E.Jager, J.Khuyagbaatar, B.Kindler, J.V.Kratz, J.Krier, A.Kuznetsov, B.Lommel, K.Nishio, H.Nitsche, J.P.Omtvedt, O.Petrushkin, D.Rudolph, J.Runke, F.Samadani, M.Schadel, B.Schausten, A.Turler, A.Yakushev, Q.Zhi

Experimental study of the 238U(36S, 3-5n)269-271Hs reaction leading to the observation of 270Hs

NUCLEAR REACTIONS 238U(36S, 3n), (36S, 4n), (36S, 5n), E=256.4 MeV; measured reaction products using COMPACT system of efficient and rapid chemical-separation and online detection based on the cryo-thermo chromatography method. 269,270,271Hs; deduced production σ.

RADIOACTIVITY 269,270,271Hs, 265,267Sg(α); measured decay products, Iα, Eα; deduced T1/2, αα correlations; 261,263Rf, 264Sg(SF); measured decay products, Eα, Iα; deduced α-SF correlations.

doi: 10.1103/PhysRevC.81.061601
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2010SV01      Eur.Phys.J. A 44, 393 (2010)

A.I.Svirikhin, V.N.Dushin, M.L.Chelnokov, V.I.Chepigin, I.N.Izosimov, D.E.Katrasev, O.N.Malyshev, A.Minkova, A.G.Popeko, E.A.Sokol, A.V.Yeremin

Neutron multiplicity at spontaneous fission of 246Fm

RADIOACTIVITY 246Fm(SF)[from 208Pb(40Ar, 2n), E=186 MeV]; measured En, In(θ), Eα, Iα, E(particle), I(particle), (particle)n-coin; deduced neutron multiplicity, T1/2, spontaneous fission branching ratio.

NUCLEAR REACTIONS 208Pb(40Ar, 2n), E=186 MeV; measured σ.

doi: 10.1140/epja/i2010-10968-0
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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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2008DV02      Phys.Rev.Lett. 100, 132503 (2008)

J.Dvorak, W.Bruchle, M.Chelnokov, Ch.E.Dullmann, Z.Dvorakova, K.Eberhardt, E.Jager, R.Krucken, A.Kuznetsov, Y.Nagame, F.Nebel, K.Nishio, R.Perego, Z.Qin, M.Schadel, B.Schausten, E.Schimpf, R.Schuber, A.Semchenkov, P.Thorle, A.Turler, M.Wegrzecki, B.Wierczinski, A.Yakushev, A.Yeremin

Observation of the 3n Evaporation Channel in the Complete Hot-Fusion Reaction 26Mg+248Cm Leading to the New Superheavy Nuclide 271Hs

NUCLEAR REACTIONS 248Cm(26Mg, xn)269Hs/270Hs/271Hs, E=13-15 MeV; measured production σ. 271Hs; deduced T1/2.

doi: 10.1103/PhysRevLett.100.132503
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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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2008HA31      Phys.Rev. C 78, 021302 (2008)

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

High-K, t1/2=1.4(1) ms, isomeric state in 255Lr

RADIOACTIVITY 255Lr, 255No(α) [from 209Bi(48Ca, 2n), E=219 MeV]; measured Eα, Iα, conversion electrons, Eγ, Iγ, γα-, (ce)α-coin. 255Lr; deduced levels, J, π, hindrance factors, half-life of isomeric state.

doi: 10.1103/PhysRevC.78.021302
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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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2006DV01      Phys.Rev.Lett. 97, 242501 (2006)

J.Dvorak, W.Bruchle, M.Chelnokov, R.Dressler, Ch.E.Dullmann, K.Eberhardt, V.Gorshkov, E.Jager, R.Krucken, A.Kuznetsov, Y.Nagame, F.Nebel, Z.Novackova, Z.Qin, M.Schadel, B.Schausten, E.Schimpf, A.Semchenkov, P.Thorle, A.Turler, M.Wegrzecki, B.Wierczinski, A.Yakushev, A.Yeremin

Doubly Magic Nucleus 270108Hs162

RADIOACTIVITY 269,270Hs, 265Sg(α) [from 248Cm(26Mg, xn) and subsequent decay]; measured Eα, T1/2. 266Sg(SF) [from 270Hs decay]; measured T1/2. Rapid chemical separation.

NUCLEAR REACTIONS 248Cm(26Mg, 4n), (26Mg, 5n), E=136, 145 MeV; measured delayed Eα, αα-coin; deduced production σ.

doi: 10.1103/PhysRevLett.97.242501
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2006HA17      Nucl.Instrum.Methods Phys.Res. A560, 388 (2006)

K.Hauschild, A.V.Yeremin, O.Dorvaux, A.Lopez-Martens A.V.Belozerov, Ch.Briancon, M.L.Chelnokov, V.I.Chepigin, S.A.Garcia-Santamaria, V.A.Gorshkov, F.Hanappe, A.P.Kabachenko, A.Korichi, O.N.Malyshev, Yu.Ts.Oganessian, A.G.Popeko, N.Rowley, A.V.Shutov, L.Stuttge, A.I.Svirikhin

GABRIELA: A new detector array of γ-ray and conversion electron spectroscopy of transfermium elements

RADIOACTIVITY 210,211,212Ra(IT) [from 174Yb(40Ar, xn)]; measured Eγ, Iγ, γγ-coin, T1/2. 210,211,212Ra deduced levels, J, π, T1/2. Recoil separator.

doi: 10.1016/j.nima.2006.01.107
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2006LO12      Phys.Rev. C 74, 044303 (2006)

A.Lopez-Martens, K.Hauschild, A.V.Yeremin, A.V.Belozerov, Ch.Briancon, M.L.Chelnokov, V.I.Chepigin, D.Curien, O.Dorvaux, 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, A.I.Svirikhin, N.U.H.Syed, Ch.Theisen

Detailed spectroscopy of 249Fm

RADIOACTIVITY 253No(α) [from 207Pb(48Ca, 2n)]; measured Eα, Eγ, αγ-coin. 249Fm deduced levels, J, π, ICC, configurations. Level systematics in neighboring isotones discussed.

doi: 10.1103/PhysRevC.74.044303
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2005YE02      Nucl.Instrum.Methods Phys.Res. A539, 441 (2005)

A.V.Yeremin, A.V.Belozerov, M.L.Chelnokov, V.I.Chepigin, V.A.Gorshkov, A.P.Kabachenko, O.N.Malyshev, A.G.Popeko, R.N.Sagaidak, A.V.Shutov, E.A.Sokol, A.I.Svirikhin

Neutron detector at the focal plane of the set up VASSILISSA

RADIOACTIVITY 252No(SF) [from 206Pb(48Ca, 2n)]; measured fission fragments spectra, prompt neutron multiplicity. Recoil separator.

doi: 10.1016/j.nima.2004.09.043
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2004MA01      Nucl.Instrum.Methods Phys.Res. A516, 529 (2004)

O.N.Malyshev, A.V.Yeremin, A.G.Popeko, A.V.Belozerov, M.L.Chelnokov, V.I.Chepigin, V.A.Gorshkov, S.Hofmann, M.G.Itkis, A.P.Kabachenko, Yu.Ts.Oganessian, R.N.Sagaidak, S.Saro, A.V.Shutov, A.I.Svirikhin

In-beam separation and mass determination of superheavy nuclei. Part II

NUCLEAR REACTIONS 174Yb(48Ca, 5n), (48Ca, 6n), (48Ca, 4nα), E=216 MeV; 198Pt(48Ca, 4n), E=215 MeV; 206,208Pb(48Ca, 2n), E ≈ 218 MeV; 238U(48Ca, 3n), E=234 MeV; measured evaporation residue charge state distributions. Recoil-decay tagging, mass separator.

doi: 10.1016/j.nima.2003.08.118
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2004OG02      Eur.Phys.J. A 19, 3 (2004)

Yu.Ts.Oganessian, A.V.Yeremin, A.G.Popeko, O.N.Malyshev, A.V.Belozerov, G.V.Buklanov, M.L.Chelnokov, V.I.Chepigin, V.A.Gorshkov, S.Hofmann, M.G.Itkis, A.P.Kabachenko, B.Kindler, G.Munzenberg, R.N.Sagaidak, S.Saro, H.-J.Schott, B.Streicher, A.V.Shutov, A.I.Svirikhin, G.K.Vostokin

Second experiment at VASSILISSA separator on the synthesis of the element 112

NUCLEAR REACTIONS 238U(48Ca, 3n), E ≈ 232 MeV; measured production σ. Mass separator, recoil-decay tagging.

RADIOACTIVITY 283Cn(SF) [from 238U(48Ca, 3n)]; measured T1/2.

doi: 10.1140/epja/i2003-10113-4
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2004OG06      Nucl.Phys. A734, 196 (2004)

Yu.Ts.Oganessian, A.V.Yeremin, A.G.Popeko, O.N.Malyshev, A.V.Belozerov, G.Buklanov, M.L.Chelnokov, V.I.Chepigin, V.A.Gorshkov, S.Hofmann, M.G.Itkis, A.P.Kabachenko, B.Kindler, G.Munzenberg, R.N.Sagaidak, S.Saro, H.-J.Schott, B.Streicher, A.V.Shutov, A.I.Svirikhin, G.K.Vostokin

In-Flight Separation and Mass Selection of Heavy Evaporation Residues

NUCLEAR REACTIONS 238U(48Ca, 3n), E=234 MeV; measured production σ. Mass separator.

RADIOACTIVITY 283Cn(SF) [from 238U(48Ca, 3n)]; measured T1/2. Mass-separated source.

doi: 10.1016/j.nuclphysa.2004.01.033
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2004ST18      Nucl.Phys. A738, 436 (2004)

S.V.Stepantsov, M.S.Golovkov, A.S.Fomichev, A.M.Rodin, S.I.Sidorchuk, R.S.Slepnev, G.M.Ter-Akopian, M.L.Chelnokov, V.A.Gorshkov, Yu.Ts.Oganessian, R.Wolski, A.A.Korsheninnikov, E.Yu.Nikolskii, I.Tanihata

5H and 5He nuclear systems studied by means of the 6He + 2H reaction

NUCLEAR REACTIONS 2H(6He, 3He), (6He, t), E=132 MeV; measured particle spectra. 5H, 5He deduced resonance energies, widths.

doi: 10.1016/j.nuclphysa.2004.04.081
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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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2003BE18      Eur.Phys.J. A 16, 447 (2003)

A.V.Belozerov, M.L.Chelnokov, V.I.Chepigin, T.P.Drobina, V.A.Gorshkov, A.P.Kabachenko, O.N.Malyshev, I.M.Merkin, Yu.Ts.Oganessian, A.G.Popeko, R.N.Sagaidak, A.I.Svirikhin, A.V.Yeremin, G.Berek, I.Brida, S.Saro

Spontaneous-fission decay properties and production cross-sections for the neutron-deficient nobelium isotopes formed in the 44, 48Ca + 204, 206, 208Pb reactions

NUCLEAR REACTIONS 208Pb(44Ca, 2n), (44Ca, 3n), (48Ca, 2n), (48Ca, 3n), (48Ca, 4n), E ≈ 200-240 MeV; 206Pb(48Ca, n), (48Ca, 2n), (48Ca, 3n), (48Ca, 4n), E ≈ 200-240 MeV; 204Pb(48Ca, 2n), (48Ca, 3n), E ≈ 200-240 MeV; measured σ. Mass separator, comparison with previous results and statistical model predictions.

RADIOACTIVITY 248,249,250,252No(SF), (α) [from 204,206,208Pb(44,46,48Ca, xn)]; measured fission T1/2, α-branching ratios. Comparison with model predictions.

doi: 10.1140/epja/i2002-10109-6
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2003GO11      Phys.Lett. B 566, 70 (2003)

M.S.Golovkov, Yu.Ts.Oganessian, D.D.Bogdanov, A.S.Fomichev, A.M.Rodin, S.I.Sidorchuk, R.S.Slepnev, S.V.Stepantsov, G.M.Ter-Akopian, R.Wolski, V.A.Gorshkov, M.L.Chelnokov, M.G.Itkis, E.M.Kozulin, A.A.Bogatchev, N.A.Kondratiev, I.V.Korzyukov, A.A.Yukhimchuk, V.V.Perevozchikov, Yu.I.Vinogradov, S.K.Grishechkin, A.M.Demin, S.V.Zlatoustovsky, A.V.Kuryakin, S.V.Fil'chagin, R.I.Il'kayev, F.Hanappe, T.Materna, L.Stuttge, A.H.Ninane, A.A.Korsheninnikov, E.Yu.Nikolskii, I.Tanihata, P.Roussel-Chomaz, W.Mittig, N.Alamanos, V.Lapoux, E.C.Pollacco, L.Nalpas

Evidences for resonance states in 5H

NUCLEAR REACTIONS 3H(t, p), E=57.5 MeV; measured missing mass spectrum. 5H deduced resonance state energy, width.

doi: 10.1016/S0370-2693(03)00803-7
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2003KO11      Phys.Rev.Lett. 90, 082501 (2003)

A.A.Korsheninnikov, E.Yu.Nikolskii, E.A.Kuzmin, A.Ozawa, K.Morimoto, F.Tokanai, R.Kanungo, I.Tanihata, N.K.Timofeyuk, M.S.Golovkov, A.S.Fomichev, A.M.Rodin, M.L.Chelnokov, G.M.Ter-Akopian, W.Mittig, P.Roussel-Chomaz, H.Savajols, E.Pollacco, A.A.Ogloblin, M.V.Zhukov

Experimental Evidence for the Existence of 7H and for a Specific Structure of 8He

NUCLEAR REACTIONS 1H(8He, 2p), E=61.3 MeV/nucleon; measured particle spectra, pp-coin; deduced evidence for 7H. 1H(8He, t), E=61.3 MeV/nucleon; measured σ(E, θ). 8He deduced ground-state configuration features.

doi: 10.1103/PhysRevLett.90.082501
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2003PO08      Nucl.Instrum.Methods Phys.Res. A510, 371 (2003)

A.G.Popeko, O.N.Malyshev, A.V.Yeremin, A.V.Belozerov, M.L.Chelnokov, V.I.Chepigin, V.A.Gorshkov, M.G.Itkis, A.P.Kabachenko, Yu.Ts.Oganessian, R.N.Sagaidak, A.V.Shutov, A.I.Svirikhin

In-beam separation and mass determination of superheavy nuclei. Part I

NUCLEAR REACTIONS 164Dy(40Ar, 6n), E not given; 208Pb(40Ar, 2n), E not given; measured fragment yields. 204Pb(48Ca, X), 208Pb(44Ca, X), E not given; measured (recoil)(decay)-coin; deduced evidence for 249,250No.

RADIOACTIVITY 249,250No [from 204Pb(48Ca, X), 208Pb(44Ca, X)]; measured T1/2.

doi: 10.1016/S0168-9002(03)01823-0
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2003SI15      Nucl.Phys. A719, 229c (2003)

S.I.Sidorchuk, D.D.Bogdanov, A.S.Fomichev, M.S.Golovkov, Yu.Ts.Oganessian, A.M.Rodin, R.S.Slepnev, S.V.Stepantsov, G.M.Ter-Akopian, R.Wolski, V.A.Gorshkov, M.L.Chelnokov, M.G.Itkis, E.M.Kozulin, A.A.Bogatchev, N.A.Kondratiev, I.V.Korzyukov, A.A.Korsheninnikov, E.Yu.Nikolskii, I.Tanihata

Resonance states of hydrogen nuclei 4H and 5H obtained in transfer reactions with exotic beams

NUCLEAR REACTIONS 2,3H(t, p), E=58 MeV; 2H(6He, 3He), E=150 MeV; measured particle spectra. 4,5H deduced resonance energies, widths.

doi: 10.1016/S0375-9474(03)00924-2
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2003TE06      Yad.Fiz. 66, 1587 (2003); Phys.Atomic Nuclei 66, 1544 (2003)

G.M.Ter-Akopian, D.D.Bogdanov, A.S.Fomichev, M.S.Golovkov, Yu.Ts.Oganessian, A.M.Rodin, S.I.Sidorchuk, R.S.Slepnev, S.V.Stepantsov, R.Wolski, V.A.Gorshkov, M.L.Chelnokov, A.A.Korsheninnikov, E.Yu.Nikolskii, I.Tanihata, F.Hanappe, T.Materna, L.Stuttge, A.H.Ninane

Resonance States of Hydrogen Nuclei 4H and 5H Obtained in Transfer Reactions with Exotic Beams

NUCLEAR REACTIONS 2,3H(t, p), E=57.5 MeV; measured missing mass spectra, pn-coin following residual nucleus decay. 4,5H deduced resonance states energies, widths.

doi: 10.1134/1.1601763
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2003TE16      Acta Phys.Hung.N.S. 18, 141 (2003)

G.M.Ter-Akopian, D.D.Bogdanov, A.S.Fomichev, M.S.Golovkov, Yu.Ts.Oganessian, A.M.Rodin, S.I.Sidorchuk, R.S.Slepnev, S.V.Stepantsov, R.Wolski, V.A.Gorshkov, M.L.Chelnokov, A.A.Korsheninnikov, E.Yu.Nikolskii, I.Tanihata, F.Hanappe, T.Materna, L.Stuttge, A.H.Ninane

Resonance States of Superheavy Hydrogen Nuclei Obtained in Transfer Reactions with Exotic Beams

NUCLEAR REACTIONS 2,3H(t, p), E=57.5 MeV; 2H(6He, 3He), E=133 MeV; measured particle spectra, correlations, σ. 4,5H deduced resonance energies, widths.

doi: 10.1556/APH.18.2003.2-4.4
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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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2003YE02      Yad.Fiz. 66, 1078 (2003); Phys.Atomic Nuclei 66, 1042 (2003)

A.V.Yeremin, A.V.Belozerov, M.L.Chelnokov, V.I.Chepigin, V.A.Gorshkov, A.P.Kabachenko, O.N.Malyshev, Yu.Ts.Oganessian, A.G.Popeko, R.N.Sagaidak, A.I.Svirikhin, S.Hofmann, G.Berek, I.Brida, S.Saro

The Upgrade of the Kinematic Separator VASSILISSA-Experimental Results and Plans

NUCLEAR REACTIONS 208Pb(16O, xn), 197Au, 208Pb, 232Th(20Ne, xn), 190Os, 194,196,198Pt, 197Au, 205Tl, 208Pb, 209Bi, 232Th, 236,238U(22Ne, xn), 181Ta, 197Au, 208Pb(24Mg, xn), 181Ta, 197Au, 207,208Pb, 232Th(26Mg, xn), 175Lu, 197Au, 232Th, 238U(27Al, xn), 169Tm, 181Ta, 232Th(31P, xn), 175Lu(35Cl, xn), 159Tb, 165Ho, 182W(40Ar, xn), 151,153Eu, 159Tb(40Ca, xn), 208Pb(44Ca, xn), 174,176Yb, 204,206,208Pb, 232Th, 239U, 242Pu(48Ca, xn), E*=20-140 MeV; measured excitation functions; deduced maximum σ.

RADIOACTIVITY 249,250No(α), (SF); measured T1/2, α-branching ratio. 248No(α); measured T1/2 lower limit.

doi: 10.1134/1.1586416
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2002KO24      Yad.Fiz. 65, 696 (2002); Phys.Atomic Nuclei 65, 664 (2002)

A.A.Korsheninnikov, M.S.Golovkov, A.Ozawa, K.Yoshida, I.Tanihata, Z.Fulop, K.Kusaka, K.Morimoto, H.Otsu, H.Petrascu, F.Tokanai, D.D.Bogdanov, M.L.Chelnokov, A.S.Fomichev, V.A.Gorshkov, Yu.Ts.Oganessian, A.M.Rodin, S.I.Sidorchuk, S.V.Stepantsov, G.M.Ter-Akopian, R.Wolski, W.Mittig, P.Roussel-Chomaz, H.Savajols, E.A.Kuzmin, E.Yu.Nikolsky, B.G.Novatsky, A.A.Ogloblin

Superheavy Hydrogen 5H and Spectroscopy of 7He

NUCLEAR REACTIONS 1H(6He, 2p), E=36 MeV/nucleon; 1H(8He, d), E=50 MeV/nucleon; measured particle spectra. 5H deduced resonance above decay threshold. 7He deduced excited state.

doi: 10.1134/1.1471270
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2002OG07      Part. and Nucl., Lett. 110, 5 (2002)

Yu.Ts.Oganessian, A.V.Yeremin, A.V.Belozerov, G.Berek, I.Brida, M.L.Chelnokov, V.I.Chepigin, V.A.Gorshkov, A.P.Kabachenko, S.P.Korotkov, O.N.Malyshev, A.G.Popeko, L.A.Rubinskaya, R.N.Sagaidak, E.M.Smirnova, A.I.Svirikhin

Kinematic Separation and Mass Analysis of Heavy Recoiling Nuclei

NUCLEAR REACTIONS 238U, 232Th, 242Pu(48Ca, 3n), E ≈ 230 MeV; measured σ. 164Dy(40Ar, 7n), E=190-210 MeV; measured evaporation residue yields, charge states. Mass separator.


2002OG12      Bull.Rus.Acad.Sci.Phys. 66, 676 (2002)

Yu.Ts.Oganessian, G.M.Ter-Akopian, D.D.Bogdanov, M.S.Golovkov, V.A.Gorshkov, A.M.Rodin, S.I.Sidorchuk, R.S.Slepnev, S.V.Stepantsov, A.S.Fomichev, M.L.Chelnokov, M.G.Itkis, E.M.Kozulin, A.A.Bogachev, N.A.Kondratiev, I.V.Korzyukov, R.Wolski, A.A.Yukhimchuk, V.V.Perevozchikov, Yu.I.Vinogradov, S.K.Grishechkin, A.M.Demin, S.V.Zlatoustovsky, A.V.Kuryakin, S.V.Filchagin, R.I.Ilkaev, F.Hanappe, T.Materna, L.Stuttge, A.H.Ninane, A.A.Korsheninnikov, E.Yu.Nikolsky, I.Tanihata, P.Roussel-Chomaz, W.Mittig, N.Alamanos, V.Lapoux, E.C.Pollacco, L.Nalpas

Study of Neutron-Ultrarich Hydrogen and Helium Nuclei by Using Reactions of Radioactive Beams on Tritium Target

NUCLEAR REACTIONS 2,3H(t, p), 3H(t, d), E=57.5 MeV; measured particle spectra. 4,5H deduced resonance features. Comparison with previous results.


2002ST28      Phys.Lett. 542B, 35 (2002)

S.V.Stepantsov, D.D.Bogdanov, A.S.Fomichev, A.M.Rodin, S.I.Sidorchuk, R.S.Slepnev, G.M.Ter-Akopian, R.Wolski, M.L.Chelnokov, V.A.Gorshkov, Yu.Ts.Oganessian, N.Alamanos, F.Auger, V.Lapoux, G.Lobo, K.Amos, P.K.Deb, S.Karataglidis, M.S.Golovkov, A.A.Korsheninnikov, I.Tahihata, E.A.Kuzmin, E.Yu.Nikolskii, R.L.Kavalov

24.5 A MeV 6He + p Elastic and Inelastic Scattering

NUCLEAR REACTIONS 1H(6He, 6He), (6He, 6He'), (6He, pX), (6He, αX), E=24.5 MeV; measured σ(θ), σ(E), excitation energy spectra. 6He deduced neutron halo features.

doi: 10.1016/S0370-2693(02)02308-0
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2001GO35      Yad.Fiz. 64, No 7, 1319 (2001); Phys.Atomic Nuclei 64, 1244 (2001)

M.S.Golovkov, A.A.Korsheninnikov, I.Tanihata, D.D.Bogdanov, M.L.Chelnokov, A.S.Fomichev, V.A.Gorshkov, Yu.Ts.Oganessian, A.M.Rodin, S.I.Sidorchuk, S.V.Stepantsov, G.M.Ter-Akopian, R.Wolski, W.Mittig, P.Roussel-Chomaz, H.Savajols, E.A.Kuzmin, E.Yu.Nikolsky, B.G.Novatsky, A.A.Ogloblin

Spectroscopy of 7He and Superheavy Hydrogen Isotope 5H

NUCLEAR REACTIONS 2H(6He, 7He), E=37 MeV/nucleon; 1H(6He, 5H), E=37 MeV/nucleon; measured excitation energy spectra. 7He deduced no narrow excited states. 5H deduced resonance state above decay threshold.

doi: 10.1134/1.1389550
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2001KO52      Phys.Rev.Lett. 87, 092501 (2001)

A.A.Korsheninnikov, M.S.Golovkov, I.Tanihata, A.M.Rodin, A.S.Fomichev, S.I.Sidorchuk, S.V.Stepantsov, M.L.Chelnokov, V.A.Gorshkov, D.D.Bogdanov, R.Wolski, G.M.Ter-Akopian, Yu.Ts.Oganessian, W.Mittig, P.Roussel-Chomaz, H.Savajols, E.A.Kuzmin, E.Yu.Nikolsky, A.A.Ogloblin

Superheavy Hydrogen 5H

NUCLEAR REACTIONS 1H(6He, 2p), E=36 MeV/nucleon; measured proton spectra, relative energies, σ(θ). 5H deduced resonance parameters.

doi: 10.1103/PhysRevLett.87.092501
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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.


2000BO56      Part. and Nucl., Lett. 102, 32 (2000)

D.D.Bogdanov, R.Wolski, V.A.Gorshkov, M.Matos, A.M.Rodin, S.I.Sidorchuk, R.S.Slepnev, S.V.Stepantsov, A.S.Fomichev, M.L.Chelnokov, G.M.Ter-Akopian

Yields of Nuclear Reactions Products from a Thick Beryllium Target Bombarded by Beams of 7Li, 11B and 15N Ions

NUCLEAR REACTIONS Be(7Li, X), (11B, X), (15N, X), E=35-45 MeV; measured fragments isotopic yields, energy and angular distributions. Thick target.


2000MA65      Eur.Phys.J. A 8, 295 (2000)

O.N.Malyshev, A.V.Belozerov, M.L.Chelnokov, V.I.Chepigin, V.A.Gorshkov, A.P.Kabachenko, A.P.Popeko, J.Rohac, R.N.Sagaidak, A.V.Yeremin, S.I.Mulgin, S.V.Zhdanov

The New Isotope 217U

NUCLEAR REACTIONS 182W(40Ar, 5n), E=193 MeV; measured σ.

RADIOACTIVITY 217U(α) [from 182W(40Ar, 5n)]; measured Eα, T1/2. Comparison with neighboring nuclei.

doi: 10.1007/s100500070082
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1999OG07      Nature(London) 400, 242 (1999)

Yu.Ts.Oganessian, A.V.Yeremin, A.G.Popeko, S.L.Bogomolov, G.V.Buklanov, M.L.Chelnokov, V.I.Chepigin, B.N.Gikal, V.A.Gorshkov, G.G.Gulbekian, M.G.Itkis, A.P.Kabachenko, A.Yu.Lavrentev, O.N.Malyshev, J.Rohac, R.N.Sagaidak, S.Hofmann, S.Saro, G.Giardina, K.Morita

Synthesis of Nuclei of the Superheavy Element 114 in Reactions Induced by 48Ca

NUCLEAR REACTIONS 242Pu(48Ca, 3n), E=235 MeV; measured residual nucleus decay; deduced production σ. Mass separator.

RADIOACTIVITY 287Fl(α) [from 242Pu(48Ca, 3n)]; measured Eα, T1/2. 283Cn(SF); measured T1/2.

doi: 10.1038/22281
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1999WO13      Phys.Lett. 467B, 8 (1999)

R.Wolski, A.S.Fomichev, A.M.Rodin, S.I.Sidorchuk, S.V.Stepantsov, G.M.Ter-Akopian, M.L.Chelnokov, V.A.Gorshkov, A.Yu.Lavrentev, Yu.Ts.Oganessian, P.Roussel-Chomaz, W.Mittig, I.David

Cluster Structure of 6He Studied by Means of 6He + p Reaction at 25 MeV/n Energy

NUCLEAR REACTIONS 1H(6He, 6He), (6He, 5He), (6He, α), E=25 MeV/nucleon; measured σ(θ); deduced optical model parameters. 6He deduced cluster structure features. One-step DWBA analysis.

doi: 10.1016/S0370-2693(99)01079-5
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1998TE03      Phys.Lett. 426B, 251 (1998)

G.M.Ter-Akopian, A.M.Rodin, A.S.Fomichev, S.I.Sidorchuk, S.V.Stepantsov, R.Wolski, M.L.Chelnokov, V.A.Gorshkov, A.Yu.LavrentYev, V.I.Zagrebaev, Yu.Ts.Oganessian

Two-Neutron Exchange Observed in the 6He + 4He Reaction. Search for the ' Di-Neutron ' Configuration of 6He

NUCLEAR REACTIONS 4He(6He, 6He), E=151 MeV; measured σ(θ); deduced two-neutron exchange contribution. 6He deduced di-neutron configuration. DWBA analysis.

doi: 10.1016/S0370-2693(98)00233-0
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