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Search: Author = J.G.Ezold

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2023RO15      Eur.Phys.J. A 59, 304 (2023)

J.B.Roberto, M.Du, J.G.Ezold, S.L.Hogle, J.Moon, K.Myhre, K.P.Rykaczewski

Actinide targets for the synthesis of superheavy nuclei

doi: 10.1140/epja/s10050-023-01144-y
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2023WE04      Phys.Rev. C 107, 034313 (2023)

F.Weber, T.E.Albrecht-Schonzart, S.O.Allehabi, S.Berndt, M.Block, H.Dorrer, C.E.Dullmann, V.A.Dzuba, J.G.Ezold, V.V.Flambaum, V.Gadelshin, S.Goriely, A.Harvey, R.Heinke, S.Hilaire, M.Kaja, T.Kieck, N.Kneip, U.Koster, J.Lantis, C.Mokry, D.Munzberg, S.Nothhelfer, S.Oberstedt, S.Peru, S.Raeder, J.Runke, V.Sonnenschein, M.Stemmler, D.Studer, P.Thorle-Pospiech, H.Tomita, N.Trautmann, S.Van Cleve, J.Warbinek, K.Wendt

Nuclear moments and isotope shifts of the actinide isotopes ^249-253Cf probed by laser spectroscopy

NUCLEAR MOMENTS ^{249,250,251,252,253}Cf; measured hyperfine spectra; deduced energy positions of three atomic ground-state transitions, isotope shifts. ^249,251,253Cf; deduced nuclear magnetic dipole moments, hyperfine parameters. ^249,253Cf; deduced spectroscopic quadrupole moments. Comparison with previous experimental data. Laser resonance ionisation high-resolution spectroscopy. Comparison to theoretical estimations. RISIKO mass separator at Johannes Gutenberg University Mainz.

doi: 10.1103/PhysRevC.107.034313
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2022NO01      Phys.Rev. C 105, L021302 (2022)

S.Nothhelfer, Th.E.Albrecht-Schonzart, M.Block, P.Chhetri, Ch.E.Dullmann, J.G.Ezold, V.Gadelshin, A.Gaiser, F.Giacoppo, R.Heinke, T.Kieck, N.Kneip, M.Laatiaoui, Ch.Mokry, S.Raeder, J.Runke, F.Schneider, J.M.Sperling, D.Studer, P.Thorle-Pospiech, N.Trautmann, F.Weber, K.Wendt

Nuclear structure investigations of ^253-255Es by laser spectroscopy

NUCLEAR MOMENTS ^253,254,255Es; measured hyperfine spectra; deduced J, isotope shifts, hyperfine constants, nuclear spins, magnetic dipole moments, electric quadrupole moments. Comparison with previous experimental data. Laser resonance ionization spectroscopy. RISIKO mass separator at Johannes Gutenberg University Mainz.

doi: 10.1103/PhysRevC.105.L021302
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2018BR13      Phys.Rev. C 98, 024317 (2018)

N.T.Brewer, V.K.Utyonkov, K.P.Rykaczewski, Yu.Ts.Oganessian, F.Sh.Abdullin, R.A.Boll, D.J.Dean, S.N.Dmitriev, J.G.Ezold, L.K.Felker, R.K.Grzywacz, M.G.Itkis, N.D.Kovrizhnykh, D.C.McInturff, K.Miernik, G.D.Owen, A.N.Polyakov, A.G.Popeko, J.B.Roberto, A.V.Sabelnikov, R.N.Sagaidak, I.V.Shirokovsky, M.V.Shumeiko, N.J.Sims, E.H.Smith, V.G.Subbotin, A.M.Sukhov, A.I.Svirikhin, Yu.S.Tsyganov, S.M.Van Cleve, A.A.Voinov, G.K.Vostokin, C.S.White, J.H.Hamilton, M.A.Stoyer

Search for the heaviest atomic nuclei among the products from reactions of mixed-Cf with a ⁴⁸Ca beam

NUCLEAR REACTIONS ^{249,250,251,252}Cf(⁴⁸Ca, 2n), (⁴⁸Ca, 3n), (⁴⁸Ca, 4n), (⁴⁸Ca, 5n), E^*=33-50 MeV; calculated evaporation residual cross sections using from five models for analyzing reactions. ^249,250,251Cf(⁴⁸Ca, xn)²⁹⁴Og, E=252, 258 MeV; Yb(⁴⁸Ca, xn)²¹⁶Th/²¹⁷Th/²¹⁸Th/²¹⁹Th/²²⁰Th, E=252, 258 MeV; ²⁰⁶Pb(⁴⁸Ca, 2n)²⁵²No, E=252, 258 MeV; measured Eα, Iα and (implants)α correlations, using Dubna Gas Filled Recoil Separator (DGFRS) for recoil separation and double-sided silicon strip detectors for α detection at JINR. Reviewed earlier experiments from 2002 to 2012 for the detection of ²⁹⁴Og nuclide. ^295,296Og; predicted production σ, half-life and Eα for the decay of ²⁹⁶Og; discussed future prospects for production of these two nuclides.

RADIOACTIVITY ²⁹⁴Og, ²⁹⁰Lv, ^218,219Th, ^214,215Ra(α); ²⁸⁶Fl(SF); measured Eα, Q(α) and T_1/2. ^294,296Og(α); comparison of experimental values for Q(α) and T_1/2 for ²⁹⁴Og with theoretical predictions for ²⁹⁴Og and ²⁹⁶Og.

doi: 10.1103/PhysRevC.98.024317
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2015RO25      Nucl.Phys. A944, 99 (2015)

J.B.Roberto, C.W.Alexander, R.A.Boll, J.D.Burns, J.G.Ezold, L.K.Felker, S.L.Hogle, K.P.Rykaczewski

Actinide targets for the synthesis of super-heavy elements

doi: 10.1016/j.nuclphysa.2015.06.009
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2013AH03      Phys.Rev. C 87, 054328 (2013)

I.Ahmad, J.P.Greene, F.G.Kondev, S.Zhu, M.P.Carpenter, R.V.F.Janssens, R.A.Boll, J.G.Ezold, S.M.Van Cleve, E.Browne

α decay of ₉₇²⁴⁹Bk and levels in ₉₅²⁴⁵Am

RADIOACTIVITY ²⁴⁹Bk(α); measured Eγ, Iγ, Eα, Iα, γα-, γγ-coin, absolute Iγ of 327.45-keV γ ray. Alpha spectra measured using Argonne double-focusing magnetic spectrometer. ²⁴⁹Cf(α)[from ²⁴⁹Bk β^- decay]; measured Eα, Eγ. ²⁴⁵Am; deduced levels, J, π, bands, Nilsson configurations, strong Coriolis mixing, hindrance factors. Comparison with previous experimental results. Systematics of low-lying levels in ^{239,241,243,245}Am.

doi: 10.1103/PhysRevC.87.054328
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2013OG04      Phys.Rev. C 87, 054621 (2013)

Yu.Ts.Oganessian, F.Sh.Abdullin, C.Alexander, J.Binder, R.A.Boll, S.N.Dmitriev, J.Ezold, K.Felker, J.M.Gostic, R.K.Grzywacz, J.H.Hamilton, R.A.Henderson, M.G.Itkis, K.Miernik, D.Miller, K.J.Moody, A.N.Polyakov, A.V.Ramayya, J.B.Roberto, M.A.Ryabinin, K.P.Rykaczewski, R.N.Sagaidak, D.A.Shaughnessy, I.V.Shirokovsky, M.V.Shumeiko, M.A.Stoyer, N.J.Stoyer, V.G.Subbotin, A.M.Sukhov, Yu.S.Tsyganov, V.K.Utyonkov, A.A.Voinov, G.K.Vostokin

Experimental studies of the ²⁴⁹Bk+⁴⁸Ca reaction including decay properties and excitation function for isotopes of element 117, and discovery of the new isotope ²⁷⁷Mt

NUCLEAR REACTIONS ²⁴⁹Bk(⁴⁸Ca, 3n), (⁴⁸Ca, 4n), E=243.7, 255.7, 259.8 MeV; measured σ(E) for production of ^293,294Ts using DGFRS separator at FLNR, JINR facility. Comparison with theoretical calculations.

RADIOACTIVITY ^293,294Ts, ^289,290Mc, ^285,286Nh, ^281,282Rg, ²⁷⁸Mt, ²⁷⁴Bh(α)[from α decay chains of ²⁹³Ts and ²⁹⁴Ts formed in ²⁴⁹Bk(⁴⁸Ca, 3n), (⁴⁸Ca, 4n), E=243.7, 255.7, 259.8 MeV]; measured Eα, Iα, half-lives. ²⁷⁰Db, ²⁷⁷Mt, ²⁸¹Rg(SF); measured decay energy, half-lives. ²⁸¹Rg(α), (SF); measured α/SF branching ratio. ²⁷⁷Mt; identified new isotope. Systematics of Q(α), SF- and α-decay half-lives for isotopes in Z=104-117, N=150-177 regions.

doi: 10.1103/PhysRevC.87.054621
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetA0948. Data from this article have been entered in the XUNDL database. For more information, click here.

2012OG06      Phys.Rev.Lett. 109, 162501 (2012)

Yu.Ts.Oganessian, F.Sh.Abdullin, C.Alexander, J.Binder, R.A.Boll, S.N.Dmitriev, J.Ezold, K.Felker, J.M.Gostic, R.K.Grzywacz, J.H.Hamilton, R.A.Henderson, M.G.Itkis, K.Miernik, D.Miller, K.J.Moody, A.N.Polyakov, A.V.Ramayya, J.B.Roberto, M.A.Ryabinin, K.P.Rykaczewski, R.N.Sagaidak, D.A.Shaughnessy, I.V.Shirokovsky, M.V.Shumeiko, M.A.Stoyer, N.J.Stoyer, V.G.Subbotin, A.M.Sukhov, Yu.S.Tsyganov, V.K.Utyonkov, A.A.Voinov, G.K.Vostokin

Production and Decay of the Heaviest Nuclei ^{293, 294}117 and ²⁹⁴118

NUCLEAR REACTIONS ²⁴⁹Bk(⁴⁸Ca, X)²⁹³Ts/²⁹⁴Ts, E=247, 252 MeV; ²⁴⁹Cf(⁴⁸Ca, 3n)²⁹⁴Og, E=245, 251 MeV; measured reaction products, Eα, Iα; deduced average σ, T_1/2. Comparison with available data.

RADIOACTIVITY ²⁹⁴Og, ^293,294Ts, ²⁹⁰Lv, ^289,290Mc(α), ²⁸⁶Fl(α), (SF), ^285,286Nh(α), ²⁸²Cn(SF), ²⁸¹Rg(SF), ²⁸²Rg(α), ²⁷⁸Mt, ²⁷⁴Bh(α), ²⁷⁰Db(SF); measured decay products, Eα, Iα; deduced discovery z=117 element, T_1/2, decay branch, Q-values. Comparison with available data.

doi: 10.1103/PhysRevLett.109.162501
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetA0939. Data from this article have been entered in the XUNDL database. For more information, click here.

2011HA63      J.Phys.:Conf.Ser. 312, 082026 (2011)

J.H.Hamilton, Yu.Ts.Oganessian, F.Sh.Abdullin, P.D.Bailey, D.Benker, M.E.Bennett, S.N.Dmitriev, J.Ezold, R.A.Henderson, M.G.Itkis, Yu.V.Lobanov, A.N.Mezentsev, K.J.Moody, S.L.Nelson, A.N.Polyakov, C.E.Porter, A.V.Ramayya, F.Riley, J.B.Roberto, M.A.Ryabinin, K.P.Rykaczewski, R.N.Sagaidak, D.A.Shaughnessy, I.V.Shirokovsky, M.A.Stoyer, V.G.Subbotin, R.Sudowe, A.M.Sukhov, Tu.S.Tsyganov, V.K.Utyonkov, A.A.Voinov, G.K.Vostokin, P.A.Wilk

Synthesis of the New Element with Z=117

NUCLEAR REACTIONS ²⁴⁹Bk(⁴⁸Ca, 4n)²⁹³Ts, E=252 MeV;²⁴⁹Bk(⁴⁸Ca, 3n)²⁹⁴Ts, E=252 MeV; measured Eα, α-decay chains, ER, fission fragments; deduced new element 117, T_1/2.

doi: 10.1088/1742-6596/312/4/082026
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2011OG04      Phys.Rev. C 83, 054315 (2011)

Yu.Ts.Oganessian, F.Sh.Abdullin, P.D.Bailey, D.E.Benker, M.E.Bennett, S.N.Dmitriev, J.G.Ezold, J.H.Hamilton, R.A.Henderson, M.G.Itkis, Yu.V.Lobanov, A.N.Mezentsev, K.J.Moody, S.L.Nelson, A.N.Polyakov, C.E.Porter, A.V.Ramayya, F.D.Riley, J.B.Roberto, M.A.Ryabinin, K.P.Rykaczewski, R.N.Sagaidak, D.A.Shaughnessy, I.V.Shirokovsky, M.A.Stoyer, V.G.Subbotin, R.Sudowe, A.M.Sukhov, R.Taylor, Yu.S.Tsyganov, V.K.Utyonkov, A.A.Voinov, G.K.Vostokin, P.A.Wilk

Eleven new heaviest isotopes of elements Z = 105 to Z = 117 identified among the products of ²⁴⁹Bk+⁴⁸Ca reactions

RADIOACTIVITY ^293,294Ts(α)[from ²⁴⁹Bk(⁴⁸Ca, xn), E=252 MeV]; ²⁷⁴Bh, ²⁷⁸Mt, ²⁸²Rg, ²⁸⁶Nh, ²⁹⁰Mc(α) [from α decay chain of ²⁹⁴Ts]; ²⁸¹Rg, ²⁸⁵Nh, ²⁸⁹Mc(α)[from α decay chain of ²⁹³Ts]; ²⁷⁰Db(SF), (α), (EC)[from α decay of ²⁷⁴Bh]; ²⁸¹Rg(SF)[from α decay of ²⁸⁵Nh]; measured Eα, half-lives and β decay energies of residues; deduced Q(α). Systematics of α decay half-lives, Q(α) values and β⁺, EC half-lives of Z=106-118, N=150-175, A=260-295 isotopes.

NUCLEAR REACTIONS ²⁴⁹Bk(⁴⁸Ca, xn)²⁹³Ts/²⁹⁴Ts, E=252 MeV; measured production cross sections.

doi: 10.1103/PhysRevC.83.054315
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetA0884. Data from this article have been entered in the XUNDL database. For more information, click here.

2010OG01      Phys.Rev.Lett. 104, 142502 (2010)

Yu.Ts.Oganessian, F.Sh.Abdullin, P.D.Bailey, D.E.Benker, M.E.Bennett, S.N.Dmitriev, J.G.Ezold, J.H.Hamilton, R.A.Henderson, M.G.Itkis, Yu.V.Lobanov, A.N.Mezentsev, K.J.Moody, S.L.Nelson, A.N.Polyakov, C.E.Porter, A.V.Ramayya, F.D.Riley, J.B.Roberto, M.A.Ryabinin, K.P.Rykaczewski, R.N.Sagaidak, D.A.Shaughnessy, I.V.Shirokovsky, M.A.Stoyer, V.G.Subbotin, R.Sudowe, A.M.Sukhov, Yu.S.Tsyganov, V.K.Utyonkov, A.A.Voinov, G.K.Vostokin, P.A.Wilk

Synthesis of a New Element with Atomic Number Z = 117

NUCLEAR REACTIONS ²⁴⁹Bk(⁴⁸Ca, 4n), E=252 MeV; ²⁴⁹Bk(⁴⁸Ca, 3n) , E=247 MeV;measured Eα, Iα, α-α correlations. ^293,294Ts; deduced σ, decay chains, T_1/2.

RADIOACTIVITY ^293,294Ts, ^289,290Mc, ^285,286Nh, ²⁸²Rg, ²⁷⁸Mt, ²⁷⁴Bh(α); measured Eα, Iα, and half-lives. ²⁷⁰Db, ²⁸¹Rg(SF); measured TKE, and T_1/2.

doi: 10.1103/PhysRevLett.104.142502
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Note: The following list of authors and aliases matches the search parameter J.G.Ezold: , J.G.EZOLD