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NSR database version of April 25, 2024.

Search: Author = M.L.Chelnokov

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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 ^{253,254,255,256,257,258,259,260,261,262}Rf, ^{252,253,254,255,256,257,258,259,260,261,262}Lr, ^{249,250,251,252,253,254,255,256,257,258,259,260,261}No, ^{245,246,247,248,249,250,251,252,253,254,255,256,257,258,259}Md, ^{243,244,245,246,247,248,249,250,251,252,253,254,255,256,257,258,259}Fm(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, T_1/2 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 T_1/2 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 T_1/2. 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, T_1/2, 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, T_1/2. 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, T_1/2 for two isomeric fissioning states, branching ratio for α-decay. ²⁵¹No; deduced T_1/2. ²⁵²Rf; deduced T_1/2 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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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,251}No(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 T_1/2, 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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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 T_1/2, 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, T_1/2, 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]; ^{249,250,252,254}No(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, T_1/2. 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 T_1/2, 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 T_1/2, 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, 205}Tl

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 ^{236,238,240,242,244}Pu, ^{242,244,246,248,250}Cm, ²⁴⁹Bk, ^{246,250,252,254}Cf, ^{244,246,256,258}Fm, ^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 T_1/2, average neutron multiplicity separately for each T_1/2. ^{236,238,240,242,244}Pu, ^{242,244,246,248,250}Cm, ²⁴⁹Bk, ^{246,250,252,254}Cf, ^{244,246,254,256,258}Fm, ^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 T_1/2.

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

doi: 10.1134/S1547477116040129
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset41613.

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/A^1/3.

doi: 10.3103/S1062873815040310
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset41539.

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, T_1/2.

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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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset41586.

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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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset41579.

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, T_1/2.

doi: 10.1016/j.nuclphysa.2011.01.012
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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, T_1/2, 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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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset41539.

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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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 I^π = 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, t_1/2=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, T_1/2. ²⁵³No deduced levels, J, π, configurations.

doi: 10.1140/epja/i2007-10391-8
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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, T_1/2. ^210,211,212Ra deduced levels, J, π, T_1/2. 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 T_1/2.

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 T_1/2. 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, 48}Ca + ^{204, 206, 208}Pb 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 ^{248,249,250,252}No(SF), (α) [from ^204,206,208Pb(^44,46,48Ca, xn)]; measured fission T_1/2, 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 T_1/2.

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 T_1/2, α-branching ratio. ²⁴⁸No(α); measured T_1/2 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, T_1/2. 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, T_1/2. ²⁸³Cn(SF); measured T_1/2.

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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