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NSR database version of April 11, 2024.

Search: Author = M.Block

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2023CO04      Phys.Rev. C 107, L021301 (2023)

D.M.Cox, A.Saamark-Roth, D.Rudolph, L.G.Sarmiento, R.M.Clark, J.L.Egido, P.Golubev, J.Heery, A.Yakushev, S.AAberg, H.M.Albers, M.Albertsson, M.Block, H.Brand, T.Calverley, R.Cantemir, B.G.Carlsson, Ch.E.Dullmann, J.Eberth, C.Fahlander, U.Forsberg, J.M.Gates, F.Giacoppo, M.Gotz, S.Gotz, R.-D.Herzberg, Y.Hrabar, E.Jager, D.Judson, J.Khuyagbaatar, B.Kindler, I.Kojouharov, J.V.Kratz, J.Krier, N.Kurz, L.Lens, J.Ljungberg, B.Lommel, J.Louko, C.-C.Meyer, A.Mistry, C.Mokry, P.Papadakis, E.Parr, J.L.Pore, I.Ragnarsson, J.Runke, M.Schadel, H.Schaffner, B.Schausten, D.A.Shaughnessy, P.Thorle-Pospiech, N.Trautmann, J.Uusitalo

Spectroscopy along flerovium decay chains. II. Fine structure in odd-A 289Fl

RADIOACTIVITY 289Fl(α) [from 244Pu(48Ca, X), E=6.02 MeV/nucleon]; 285Cn(α) [from 289Fl(α)]; 281Ds(α) [from 285Cn(α)]; 277Hs(SF) [from 281Ds(α)]; measured decay products, Eα, Iα, Eβ, Iβ αβ-coin, αα-coin, (fragment)αα-coin; deduced Q-values, T1/2, branching ratios, hindrance factor. 289Fl, 285Cn, 281Ds; deduced J, π and δ assignments based on the derived decay path. Comparison with structure calculations based on the symmetry-conserving configuration mixing theory. Gas-filled recoil separator TASCA was used to transmit, select, and focus the flerovium ions into an upgraded version of the TASISpec decay station consisting of implantation DSSD, veto DSSD and set of HPGe detectors (GSI).

doi: 10.1103/PhysRevC.107.L021301
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2023KO31      Sci. Rep. 13, 4783 (2023)

A.Koszorus, M.Block, P.Campbell, B.Cheal, R.P.de Groote, W.Gins, I.D.Moore, A.Ortiz-Cortes, A.Raggio, J.Warbinek

High-precision measurements of the hyperfine structure of cobalt ions in the deep ultraviolet range

ATOMIC PHYSICS 59Co; measured frequencies; deduced hyperfine parameters, a 100-fold improvement on the precision of the hyperfine A parameters, and furthermore present newly measured hyperfine B parameters. Collinear laser spectroscopy, the Ion Guide Separator On-Line (IGISOL) IV facility in Jyvaskyla, Finland.

doi: 10.1038/s41598-023-31378-1
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2023SA03      Phys.Rev. C 107, 024301 (2023)

A.Saamark-Roth, D.M.Cox, D.Rudolph, L.G.Sarmiento, M.Albertsson, B.G.Carlsson, J.L.Egido, P.Golubev, J.Heery, A.Yakushev, S.AAberg, H.M.Albers, M.Block, H.Brand, T.Calverley, R.Cantemir, R.M.Clark, Ch.E.Dullmann, J.Eberth, C.Fahlander, U.Forsberg, J.M.Gates, F.Giacoppo, M.Gotz, S.Gotz, R.-D.Herzberg, Y.Hrabar, E.Jager, D.Judson, J.Khuyagbaatar, B.Kindler, I.Kojouharov, J.V.Kratz, J.Krier, N.Kurz, L.Lens, J.Ljungberg, B.Lommel, J.Louko, C.-C.Meyer, A.Mistry, C.Mokry, P.Papadakis, E.Parr, J.L.Pore, I.Ragnarsson, J.Runke, M.Schadel, H.Schaffner, B.Schausten, D.A.Shaughnessy, P.Thorle-Pospiech, N.Trautmann, J.Uusitalo

Spectroscopy along flerovium decay chains. III. Details on experiment, analysis, 282Cn, and spontaneous fission branches

RADIOACTIVITY 290,288,286,284Fl(α)(SF) [from 244Pu(48Ca, X), E=6.02 MeV/nucleon]; 282Cn(α)(SF) [286Fl(α)]; 284Cn(α)(SF) [from 288Fl(α)]; 286Cn(α)(SF) [290Fl(α)]; 282Ds(α)(SF) [from 286Cn(α)]; 280Ds(α)(SF) [from 284Cn(α)]; measured decay products, Eα, Iα, Eβ, Iβ αβ-coin, αα-coin, (fragment)αα-coin; deduced Q-values, T1/2, branching ratios, hindrance factor. 282Cn; deduced levels, J, π, T1/2 of excited states, transition rates, monopole transition strengths. Comparison to macroscopic-microscopic finite-range liquid-drop model, self-consistent Hartree-Fock-Bogoliubov calculations and other experimental data. Gas-filled recoil separator TASCA was used to transmit, select, and focus the flerovium ions into an upgraded version of the TASISpec decay station consisting of implantation DSSD, veto DSSD and set of HPGe detectors (GSI).

doi: 10.1103/PhysRevC.107.024301
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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 249,250,251,252,253Cf; 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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2022BL03      Riv.Nuovo Cimento Soc.Ital.Fis. 45, 279 (2022)

M.Block, F.Giacoppo, F.-P.Hessberger, S.Raeder

Recent progress in experiments on the heaviest nuclides at SHIP

doi: 10.1007/s40766-022-00030-5
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2022HE04      Eur.Phys.J. A 58, 11 (2022)

F.P.Hessberger, S.Antalic, F.Giacoppo, B.Andel, D.Ackermann, M.Block, S.Heinz, J.Khuyagbaatar, I.Kojouharov, M.Venhart

Alpha-gamma decay studies of 247Md

RADIOACTIVITY 247Md(IT), (α), (SF) [from 209Bi(40Ar, X)247Md, E=184-188 MeV]; measured decay products, Eα, Iα, Eγ, Iγ, α-γ-coin. 243Es;deduced γ- and α-particles energies and intensities, J, π, isomeric state T1/2. Comparison with Nilsson levels. GSI Darmstadt, Penning source of the UNILAC, the velocity filter SHIP.

doi: 10.1140/epja/s10050-022-00663-4
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2022HU09      Phys.Lett. B 833, 137345 (2022)

H.Huang, W.Q.Zhang, A.N.Andreyev, Z.Liu, D.Seweryniak, Z.H.Li, C.Y.Guo, A.E.Barzakh, P.Van Duppen, B.Andel, S.Antalic, M.Block, A.Bronis, M.P.Carpenter, P.Copp, J.G.Cubiss, B.Ding, D.T.Doherty, Z.Favier, F.Giacoppo, T.H.Huang, B.Kindler, F.G.Kondev, T.Lauritsen, J.G.Li, G.S.Li, B.Lommel, H.Y.Lu, M.Al Monthery, P.Mosat, Y.F.Niu, C.Raison, W.Reviol, G.Savard, S.Stolze, G.L.Wilson, H.Y.Wu, Z.H.Wang, F.R.Xu, Q.B.Zeng, X.H.Yu, F.F.Zeng, X.H.Zhou

First observation of the decay of the 13/2+ isomer in 183Hg and B(M2) systematics of neutron transitions across the nuclear chart

RADIOACTIVITY 183Hg(α) [from 187Pb α decay]; 187mPb(α) [from 142Nd(50Cr, 3n2pγ), E=255 MeV, followed by separation of fragments using Argonne gas-filled analyzer (AGFA) at the ATLAS-ANL facility]; measured reaction products, evaporation residues (EVRs), Eα, Iα, (EVR)α-correlations, αγ(t), Eγ, Iγ, x rays, T1/2 using double-sided silicon strip detector (DSSD), and four HPGe clover detectors. 183,183mHg; deduced levels, isomer, J, π, T1/2 of g.s. and isomer, α branching ratio, K-conversion coefficient, multipolarity, B(M2), Nilsson configurations. 187mPb; deduced T1/2. Systematics of decay schemes of 13/2+ isomers in 175,177,179,181,183,185Hg. Systematics of B(M2) values for 7/2-, 9/2+, 11/2- and 13/2+ isomers in even-Z, odd-N nuclei: 25Mg, 33Si, 33,35S, 37Ar, 39Ca, 59Cr, 61Fe, 63,67Ni, 63,65,67Zn, 67,69,71Ge, 69,71Se, 97,99Mo, 99,101,103Ru, 103,105Pd, 107,109Cd, 109,111,113,115Sn, 153Yb, 161Hf, 163W, 163Os, 171,189,191Pt, 181,183,201,203,205Hg, 209Pb, 205,207,211Po, 207,209,213Rn, 209,211Ra, 211,213Th.

doi: 10.1016/j.physletb.2022.137345
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2022KA45      Phys.Rev. C 106, 054325 (2022)

O.Kaleja, B.Andjelic, O.Bezrodnova, K.Blaum, M.Block, S.Chenmarev, P.Chhetri, C.Droese, Ch.E.Dullmann, M.Eibach, S.Eliseev, J.Even, P.Filianin, F.Giacoppo, S.Gotz, Yu.Gusev, M.J.Gutierrez, F.P.Hessberger, N.Kalantar-Nayestanaki, J.J.W.van de Laar, M.Laatiaoui, S.Lohse, N.Martynova, E.Minaya Ramirez, A.K.Mistry, T.Murbock, Yu.Novikov, S.Raeder, D.Rodriguez, F.Schneider, L.Schweikhard, P.G.Thirolf, A.Yakushev

Direct high-precision mass spectrometry of superheavy elements with SHIPTRAP

ATOMIC MASSES 251,254No, 254,255,256Lr, 257Rf; measured cyclotron frequency; deduced mass excesses, two-neutron shell gap. Comparison to AME2020. Phase-imaging ion-cyclotron resonance mass spectrometry (PI-ICR MS) at SHIPTRAP setup. Isotopes produced in following reactions 206Pb(48Ca, 3n)251No, E=4.8 MeV/nucleon, 208Pb(48Ca, 2n)254No, E=4.56 MeV/nucleon, 209Bi(48Ca, 3n)254Lr, E=4.81 MeV/nucleon, 209Bi(48Ca, 2n)255Lr, E=4.56 MeV/nucleon, 209Bi(48Ca, n)256Lr, E=4.5 MeV/nucleon, 208Pb(50Ti, n)257Rf, E=4.65 MeV/nucleon at GSI Darmstadt.

RADIOACTIVITY 258Db, 254Lr(α); deduced Q values. Comparison to other experimental data.

doi: 10.1103/PhysRevC.106.054325
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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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2022ZH22      Phys.Lett. B 829, 137129 (2022)

W.Q.Zhang, A.N.Andreyev, Z.Liu, D.Seweryniak, H.Huang, Z.H.Li, J.G.Li, C.Y.Guo, D.T.Doherty, A.E.Barzakh, P.Van Duppen, J.G.Cubiss, B.Andel, S.Antalic, M.Block, A.Bronis, M.P.Carpenter, P.Copp, B.Ding, Z.Favier, F.Giacoppo, T.H.Huang, X.H.Yu, B.Kindler, F.G.Kondev, T.Lauritsen, G.S.Li, B.Lommel, H.Y.Lu, M.Al Monthery, P.Mosat, Y.F.Niu, C.Raison, W.Reviol, G.Savard, S.Stolze, G.L.Wilson, H.Y.Wu, Z.H.Wang, F.R.Xu, Q.B.Zeng, X.H.Zhou

First observation of a shape isomer and a low-lying strongly-coupled prolate band in neutron-deficient semi-magic 187Pb

NUCLEAR REACTIONS 142Nd(50Cr, 3n2p)187Pb, E=255 MeV beam from ATLAS-ANL facility, followed by separation of evaporation residues (EVRs) using Argonne Gas-Filled Analyzer; measured Eα, Eγ, Iγ, x rays, αγ-coin, γγ-coin, T1/2 of a new low-energy microsec-isomer by αγ(t) using Gammasphere for γ detection and double-sided silicon strip detector (DSSD) for EVRs and α particles. Recoil-decay tagging (RDT) and isomer-decay tagging (IDT) methods. 187Pb; deduced high-spin levels, J, π, isomer, K-conversion coefficient, multipolarity, bands, B(E2), B(M1)/B(E2), triple-shape coexistence at low energy. Comparison with band structure in 185Hg. Systematics of aligned angular momenta plots and experimental Routhians for bands in 183,185Hg, 187Pb. 184Hg, 186Pb, 187Tl; observed γ rays. 186,187m,188Pb; observed α-decay peaks.

doi: 10.1016/j.physletb.2022.137129
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2022ZH46      Phys.Rev. C 106, 024317 (2022)

W.Q.Zhang, A.N.Andreyev, Z.Liu, D.Seweryniak, H.Huang, Z.H.Li, J.G.Li, C.Y.Guo, A.E.Barzakh, P.Van Duppen, M.Al Monthery, B.Andel, S.Antalic, M.Block, A.Bronis, M.P.Carpenter, P.Copp, J.G.Cubiss, B.Ding, D.T.Doherty, Z.Favier, F.Giacoppo, T.H.Huang, B.Kindler, F.G.Kondev, T.Lauritsen, G.S.Li, B.Lommel, H.Y.Lu, P.Mosat, Y.F.Niu, C.Raison, W.Reviol, G.Savard, S.Stolze, G.L.Wilson, H.Y.Wu, Z.H.Wang, F.R.Xu, X.H.Yu, Q.B.Zeng, X.H.Zhou

Identification of excited states in 188Bi and 188Po

NUCLEAR REACTIONS 142Nd(50Cr, 3np)188Bi, (50Cr, 4n)188Po, E=255 MeV; measured evaporation residues (EVRs), Eα, Eγ, Iγ, x rays, (EVR)γ-coin, αγ-coin, γγ-coin, using four clover HPGe detectors, Gammasphere array with 64 Compton-suppressed HPGe detectors, and DSSD and DSSD+Sibox at the ATLAS-ANL accelerator facility. 186,187,187m,188Pb, 189,189mBi; deduced recoil-decay tagging (RDT) γ-ray yields. 188Bi; deduced levels, J, π, isomer, T1/2 and decay modes of isomer, K-conversion coefficients, multipolarities, configurations. 188Po; deduced energy of the first 2+ level. 186Pb; deduced levels, J, π. 183,184,186Hg, 186,187,187m,188Pb, 188,189,189mBi; observed Eα. Systematics of 9/2-, 1/2+, 7/2- and 13/2+ level energies in 185,187,189,191,193,195Bi, and those of first 2+, 4+, 6+ and 8+, second 0+, 2+ and 4+ in 188,190,192,194,196,198,200,202,204,206,208,210Po.

doi: 10.1103/PhysRevC.106.024317
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2021BL01      Prog.Part.Nucl.Phys. 116, 103834 (2021)

M.Block, M.Laatiaoui, S.Raeder

Recent progress in laser spectroscopy of the actinides

RADIOACTIVITY 237Np, 242Pu, 241,243Am, 244,248Cm, 249Bk, 249,251Cf, 254,255,256Lr, 252,253,254,255,256No(α); analyzed available data, experimental progress of laser spectroscopy and available actinides; deduced possibilities to measure nuclear properties such as J, mean-square charge radii and electromagnetic moments in a nuclear-model independent way.

doi: 10.1016/j.ppnp.2020.103834
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2021HE15      Phys.Rev.Lett. 126, 182501 (2021)

F.P.Hessberger, M.Block, C.E.Dullmann, A.Yakushev, M.Leino, J.Uusitalo

Some Remarks on the Discovery of 244

RADIOACTIVITY 244Md(α) [from 209Bi(40Ar, 5n)244Md, E not given]; analyzed available data, Eα, Iα. 245,246Md, 245Fm; deduced that results should be attributed to 245Md with small contributions (one event each) from 245Fm and probably 246Md.

doi: 10.1103/PhysRevLett.126.182501
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2021RA19      Phys.Rev. A 104, 022813 (2021)

H.Ramanantoanina, A.Borschevsky, M.Block, M.Laatiaoui

Electronic structure of Rf+ (Z=104) from ab initio calculations

ATOMIC PHYSICS Z=104; calculated the energy spectrum and the spectroscopic properties of the superheavy Rf element ion using the four-component relativistic Dirac-Coulomb Hamiltonian and the multireference configuration interaction model to tackle the complex electronic structure problem that combines strong relativistic effects and electron correlation.

doi: 10.1103/PhysRevA.104.022813
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2021SA01      Phys.Rev.Lett. 126, 032503 (2021)

A.Samark-Roth, D.M.Cox, D.Rudolph, L.G.Sarmiento, B.G.Carlsson, J.L.Egido, P.Golubev, J.Heery, A.Yakushev, S.Aberg, H.M.Albers, M.Albertsson, M.Block, H.Brand, T.Calverley, R.Cantemir, R.M.Clark, C.E.Dullmann, J.Eberth, C.Fahlander, U.Forsberg, J.M.Gates, F.Giacoppo, M.Gotz, S.Gotz, R.-D.Herzberg, Y.Hrabar, E.Jager, D.Judson, J.Khuyagbaatar, B.Kindler, I.Kojouharov, J.V.Kratz, J.Krier, N.Kurz, L.Lens, J.Ljungberg, B.Lommel, J.Louko, C.-C.Meyer, A.Mistry, C.Mokry, P.Papadakis, E.Parr, J.L.Pore, I.Ragnarsson, J.Runke, M.Schadel, H.Schaffner, B.Schausten, D.A.Shaughnessy, P.Thorle-Pospiech, N.Trautmann, J.Uusitalo

Spectroscopy along Flerovium Decay Chains: Discovery of 280Ds and an Excited State in 282Cn

RADIOACTIVITY 286,288Fl, 284Cn(α), 282Cn, 280Ds(SF) [from 242,244Pu(48Ca, X)286Fl/288Fl, E=6.021 MeV/nucleon]; measured decay products, Eα, Iα, Eβ, Iβ α-β coin.; deduced Q-values, T1/2, J, π. Comparison with theoretical calculations. The gas-filled separator TASCA at the GSI.

doi: 10.1103/PhysRevLett.126.032503
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2020KH01      Nucl.Phys. A994, 121662 (2020)

J.Khuyagbaatar, A.K.Mistry, D.Ackermann, L.-L.Andersson, M.Block, H.Brand, Ch.E.Dullmann, J.Even, F.P.Hessberger, J.Hoffmann, A.Hubner, E.Jager, B.Kindler, J.Krier, N.Kurz, B.Lommel, B.Schausten, J.Steiner, A.Yakushev, V.Yakusheva

The identification and confirmation of isomeric states in 254Rf and 255Rf through conversion electron detection

NUCLEAR REACTIONS 206Pb(50Ti, 2n), (50Ti, n)254,255Rf, E=252.5, 236.0 MeV pulsed beam from the UNILAC-GSI facility; measured evaporation residues (ERs), decay products, conversion electrons, isomers, T1/2 from (ERs)(fission events)-correlated, and (ERs)(fission events)(electron)-correlated decay curves using the gas-filled separator TASCA with multi-wire proportional counter (MWPC) and double-sided silicon strip detectors(DSSDs). 254,255Rf; deduced T1/2 of the ground states and isomers, production σ. Comparison of measured σ with theoretical calculations using statistical fusion-evaporation code HIVAP.

doi: 10.1016/j.nuclphysa.2019.121662
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD8007. Data from this article have been entered in the XUNDL database. For more information, click here.


2020KH08      Phys.Rev.Lett. 125, 142504 (2020)

J.Khuyagbaatar, H.M.Albers, M.Block, H.Brand, R.A.Cantemir, A.Di Nitto, C.E.Dullmann, M.Gotz, S.Gotz, F.P.Hessberger, E.Jager, B.Kindler, J.V.Kratz, J.Krier, N.Kurz, B.Lommel, L.Lens, A.Mistry, B.Schausten, J.Uusitalo, and A.Yakushev

Search for Electron-Capture Delayed Fission in the New Isotope 244Md

RADIOACTIVITY 244,245Md(α), (EC) [from 197Au(50Ti, X), E=239.8, 231.5 MeV]; measured decay products, Eα, Iα; deduced α-particles energies, T1/2. Comparison with available data.

doi: 10.1103/PhysRevLett.125.142504
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2020KH11      Phys.Rev. C 102, 064602 (2020)

J.Khuyagbaatar, A.Yakushev, Ch.E.Dullmann, D.Ackermann, L.-L.Andersson, M.Asai, M.Block, R.A.Boll, H.Brand, D.M.Cox, M.Dasgupta, X.Derkx, A.Di Nitto, K.Eberhardt, J.Even, M.Evers, C.Fahlander, U.Forsberg, J.M.Gates, N.Gharibyan, P.Golubev, K.E.Gregorich, J.H.Hamilton, W.Hartmann, R.-D.Herzberg, F.P.Hessberger, D.J.Hinde, J.Hoffmann, R.Hollinger, A.Hubner, E.Jager, B.Kindler, J.V.Kratz, J.Krier, N.Kurz, M.Laatiaoui, S.Lahiri, R.Lang, B.Lommel, M.Maiti, K.Miernik, S.Minami, A.K.Mistry, C.Mokry, H.Nitsche, J.P.Omtvedt, G.K.Pang, P.Papadakis, D.Renisch, J.B.Roberto, D.Rudolph, J.Runke, K.P.Rykaczewski, L.G.Sarmiento, M.Schadel, B.Schausten, A.Semchenkov, D.A.Shaughnessy, P.Steinegger, J.Steiner, E.E.Tereshatov, P.Thorle-Pospiech, K.Tinschert, T.Torres De Heidenreich, N.Trautmann, A.Turler, J.Uusitalo, M.Wegrzecki, N.Wiehl, S.M.Van Cleve, V.Yakusheva

Search for elements 119 and 120

NUCLEAR REACTIONS 249Bk, 249Cf(50Ti, X)299119*/299120*, E(average)=281.5 MeV; measured evaporation residues (ERs), Eα, correlated ER-α and ER-α12-SF events using UNILAC accelerator, TASCA separator, and Focal plane detector system (FPDS) consisting of double-sided silicon strip (DSSD) detectors, and Si-strip detectors for position and time correlations of events. 295,296119, 295,296120; deduced no evidence for non-random correlated events related to 3n- or 4n-channel deexcitations of the compound nuclei 299119 and 299120, within a sensitivity limit of one event corresponding to σ=65 fb for 249Bk+50Ti reaction and σ=200 fb for 249Cf+50Ti; discussed nonobservation of Z=119 and 120 superheavy elements within the context of the fusion-evaporation reaction mechanism.

doi: 10.1103/PhysRevC.102.064602
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2020MO10      Acta Phys.Pol. B51, 849 (2020)

P.Mosat, S.Antalic, F.P.Hessberger, D.Ackermann, B.Andel, M.Block, Z.Kalaninova, B.Kindler, M.Laatiaoui, B.Lommel, A.K.Mistry, J.Piot, M.Vostinar

Isomeric States in 255Rf, 256Rf and 257Rf

doi: 10.5506/APhysPolB.51.849
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2020MO11      Phys.Rev. C 101, 034310 (2020)

P.Mosat, F.P.Hessberger, S.Antalic, D.Ackermann, B.Andel, M.Block, S.Hofmann, Z.Kalaninova, B.Kindler, M.Laatiaoui, B.Lommel, A.K.Mistry, J.Piot, M.Vostinar

K isomerism in 255Rf and total kinetic energy measurements for spontaneous fission of 255, 256, 258Rf

RADIOACTIVITY 255,256RF(SF)[from 207,208Pb(50Ti, 2n), E=228.8, 238.3, 239.8 MeV]; 258Db(EC)[from 209Bi(50Ti, n), E=232.6 MeV]; 258Rf(SF)[from 258Db(EC)]; measured evaporation residues (ERs) using the velocity filter SHIP at GSI, spontaneous fission events using time and position correlations, (fragment)(fragment)-coin, total kinetic energy (TKE) distributions of SF fragments, half-lives of 255,256Rf decays from ER-SF correlated events, half-life of 258Rf decay from ce-SF correlated events, Eγ, Iγ, x rays, ce, γ(ce)-coin, K-isomers and their half-lives in 255Rf from ER-ce-SF/α and ER-ce-(ce)-SF/α correlated events using the STOP and BOX silicon strip detectors, and Ge clover detector at GSI; deduced tentative bimodal fission mode. 255Rf; deduced levels, J, π, two new high-K isomers and their Nilsson configurations; proposed level schemes of the isomers.

doi: 10.1103/PhysRevC.101.034310
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2019BL08      Radiochim.Acta 107, 821 (2019)

M.Block

Direct mass measurements and ionization potential measurements of the actinides

doi: 10.1515/ract-2019-3143
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2019KH04      Phys.Rev. C 99, 054306 (2019)

J.Khuyagbaatar, A.Yakushev, Ch.E.Dullmann, D.Ackermann, L.-L.Andersson, M.Asai, M.Block, R.A.Boll, H.Brand, D.M.Cox, M.Dasgupta, X.Derkx, A.Di Nitto, K.Eberhardt, J.Even, M.Evers, C.Fahlander, U.Forsberg, J.M.Gates, N.Gharibyan, P.Golubev, K.E.Gregorich, J.H.Hamilton, W.Hartmann, R.-D.Herzberg, F.P.Hessberger, D.J.Hinde, J.Hoffmann, R.Hollinger, A.Hubner, E.Jager, B.Kindler, J.V.Kratz, J.Krier, N.Kurz, M.Laatiaoui, S.Lahiri, R.Lang, B.Lommel, M.Maiti, K.Miernik, S.Minami, A.Mistry, C.Mokry, H.Nitsche, J.P.Omtvedt, G.K.Pang, P.Papadakis, D.Renisch, J.Roberto, D.Rudolph, J.Runke, K.P.Rykaczewski, L.G.Sarmiento, M.Schadel, B.Schausten, A.Semchenkov, D.A.Shaughnessy, P.Steinegger, J.Steiner, E.E.Tereshatov, P.Thorle-Pospiech, K.Tinschert, T.Torres De Heidenreich, N.Trautmann, A.Turler, J.Uusitalo, D.E.Ward, M.Wegrzecki, N.Wiehl, S.M.Van Cleve, V.Yakusheva

Fusion reaction 48Ca + 249Bk leading to formation of the element Ts (Z=117)

NUCLEAR REACTIONS 249Bk(48Ca, 3n), (48Ca, 4n)293Ts/294Ts, E=252.1, 254.0, 258.0 MeV; measured reaction products, evaporation residues (ER), Eα, Iα, (ER)α-correlated decay chains, and σ using double-sided silicon strip detectors for α detection, TASCA separator for evaporation residue, and multiwire proportional counter for detection of residues at UNILAC accelerator facility of GSI. Comparison with previous experimental data for (ER)α-correlated decay chains from DGFRS-Dubna facility.

RADIOACTIVITY 294Ts, 290Mc, 286Nh, 282Rg, 278Mt, 274Bh, 270Db(α); 293Ts, 289Mc, 285Nh, 281Rg(α); 266Lr, 270Db, 277Mt, 277Hs(SF); measured Eα, Iα, SF events, half-lives. 266Lr, 270Db(α), (SF); measured half-lives and α/SF branching ratios. Comparison with previous experimental data for (ER)α-correlated decay chains from DGFRS-Dubna facility. A=200-240; A=240-260; systematics of α-decay half-lives of isotopes produced in 48Ca+249Bk and 48Ca+249Cf reactions.

doi: 10.1103/PhysRevC.99.054306
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2019MI08      Nucl.Phys. A987, 337 (2019)

A.K.Mistry, J.Khuyagbaatar, F.P.Hessberger, D.Ackermann, B.Andel, S.Antalic, M.Block, P.Chhetri, F.Dechery, C.Droese, Ch.E.Dullmann, F.Giacoppo, J.Hoffmann, O.Kaleja, N.Kurz, M.Laatiaoui, L.Lens, J.Maurer, P.Mosat, J.Piot, S.Raeder, M.Vostinar, A.Yakushev, Z.Zhang

The 48Ca+181Ta reaction: Cross section studies and investigation of neutron-deficient 86 ≤ Z ≤ 93 isotopes

NUCLEAR REACTIONS 181Ta(48Ca, x)229Np, E(cm)=212, 217, 226 MeV[energies based on σ predictions by the HIVAP code]; measured xn, αxn, pxn leading to 225Np, 225U, 224Np, Evaporation Residues (ER) separated from 48Ca primary beam using the SHIP velocity filter at GSI, ToF and COMPAct Spectroscopy Set-up (COMPASS) comprising of DSSDs and SSSDs; deduced 225U, 225,226,229Np decay chains; 213Rn, 213,214,215Fr, 217,218,219Ac, 221Th, 221,222,223Pa, 225U, 225,226Np; deduced decay data, T1/2; compared with literature values; compiled production σ maxima in 3n and 4n evaporation channels from compound nuclei with Z=83-94 and projectiles 40Ar, 40,44,48Ca, 50Ti using published experimental data.

doi: 10.1016/j.nuclphysa.2019.05.003
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2019VO03      Eur.Phys.J. A 55, 17 (2019)

M.Vostinar, F.P.Hessberger, D.Ackermann, B.Andel, S.Antalic, M.Block, Ch.Droese, J.Even, S.Heinz, Z.Kalaninova, I.Kojouharov, M.Laatiaoui, A.K.Mistry, J.Piot, H.Savajols

Alpha-gamma decay studies of 258Db and its (grand)daughter nuclei 254Lr and 250Md

NUCLEAR REACTIONS 209Bi(50Ti, n)258Db, E=236 MeV; measured (after separation of evaporation residues with kinetic energy 50 MeV by the SHIP velocity filter) emitted particles using position sensitive Si strip detector, six SSSDs arranged in a box surrounding the stop detector, Eγ, Iγ, X-rays using HPGe clover detector, subsequent α-decay and SF events, T1/2 using time difference between evaporation residues implantation and subsequent α-decay of the isotopes, 258Db α-decays αγ-coin, αX-rays coin; deduced α, γ transitions, levels, J, π. 250Md, 254Lr, 254No; deduced α-decays, levels, γ transitions, Qα systematics for 250Md. 254Lr, 258Db; deduced levels, J, π, possible single-particle states configurations.

doi: 10.1140/epja/i2019-12701-y
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2018AC08      Nucl.Instrum.Methods Phys.Res. A907, 81 (2018)

D.Ackermann, A.K.Mistry, F.P.Hessberger, B.Andel, S.Antalic, M.Block, L.Caceres, P.Chhetri, F.Dechery, Ch.Droese, Ch.E.Dullmann, F.Giacoppo, J.Hoffmann, O.Kaleja, O.Kamalou, N.Kurz, J.Khuyagbaatar, R.R.Mandl, T.Murbock, M.Laatiaoui, J.Maurer, P.Mosat, J.Piot, S.Raeder, H.Savajols, O.Sorlin, Ch.Stodel, J.C.Thomas, M.Vostinar, P.Wieczorek, A.Yakushev, Z.Zhang

COMPASS-A COMPAct decay spectroscopy set-up

RADIOACTIVITY 253No(α) [from 207Pb(48Ca, 2n), E not given]; measured decay products, Eγ, Iγ, Eα, Iα, α-γ-coin.; deduced α-decay spectrum, branching ratios.

doi: 10.1016/j.nima.2018.01.096
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2018CH45      Acta Phys.Pol. B49, 599 (2018)

P.Chhetri, C.S.Moodley, S.Raeder, M.Block, F.Giacoppo, S.Gotz, F.P.Hessberger, M.Eibach, O.Kaleja, M.Laatiaoui, A.K.Mistry, T.Murbock, Th.Walther

Investigation of the First Ionization Potential of Ytterbium in Argon Buffer Gas

ATOMIC PHYSICS Yb; measured photoexcitation to excite Rydberg states in natYb (chemical homologue of No) using the fact of recent observation of such states in No (Z=102) inside buffer gas cell; measured Rydberg levels with a similar principle quantum number as observed on-line for No using laser resonance ionization spectroscopy ultra-sensitive method based on RAdiation Detected Resonance Ionization Spectroscopy (RADRIS) technique in a buffer gas environment laser resonance ionization spectroscopy in a buffer gas cell to determine the ionization potential of Yb (Z=70); deduced Rydberg states energy, principal quantum number, ionization potentials and the dependence on gas pressure; extrapolated ionization potential in vacuum; compared with literature value.

doi: 10.5506/aphyspolb.49.599
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2018DI11      Phys.Lett. B 784, 199 (2018)

A.Di Nitto, J.Khuyagbaatar, D.Ackermann, L.-L.Andersson, E.Badura, M.Block, H.Brand, I.Conrad, D.M.Cox, Ch.E.Dullmann, J.Dvorak, K.Eberhardt, P.A.Ellison, N.E.Esker, J.Even, C.Fahlander, U.Forsberg, J.M.Gates, P.Golubev, O.Gothe, K.E.Gregorich, W.Hartmann, R.D.Herzberg, F.P.Hessberger, J.Hoffmann, R.Hollinger, A.Hubner, E.Jager, B.Kindler, S.Klein, I.Kojouharov, J.V.Kratz, J.Krier, N.Kurz, S.Lahiri, B.Lommel, M.Maiti, R.Mandl, E.Merchan, S.Minami, A.K.Mistry, C.Mokry, H.Nitsche, J.P.Omtvedt, G.K.Pang, D.Renisch, D.Rudolph, J.Runke, L.G.Sarmiento, M.Schadel, H.Schaffner, B.Schausten, A.Semchenkov, J.Steiner, P.Thorle-Pospiech, N.Trautmann, A.Turler, J.Uusitalo, D.Ward, M.Wegrzecki, P.Wieczorek, N.Wiehl, A.Yakushev, V.Yakusheva

Study of non-fusion products in the 50Ti + 249Cf reaction

NUCLEAR REACTIONS 249Cf(50Ti, X)211Po/212At/213Rn/214Fr/215Ra/222Ra/221Ra/223Ac/218Rn/224Th/219Fr/223Th/218Rn/219Fr/220Ra/214Po/219Ra/217Rn/215At, E=306 MeV; measured reaction products, Eα, Iα; deduced σ.

doi: 10.1016/j.physletb.2018.07.058
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2018MI11      Acta Phys.Pol. B49, 613 (2018)

A.K.Mistry, Z.Zhang, F.P.Hessberger, D.Ackermann, B.Andel, S.Antalic, M.Block, P.Chhetri, F.Dechery, C.Droese, Ch.E.Dullmann, F.Giacoppo, J.Hoffmann, O.Kaleja, J.Khuyagbaatar, N.Kurz, M.Laatiaoui, J.Maurer, P.Mosat, J.Piot, S.Raeder, M.Vostinar, A.Yakushev

Decay Spectroscopy of Heavy Isotopes at SHIP Using the COMPASS Focal Plane Detection Set-up

RADIOACTIVITY 250Fm, 254No(α)[Nobelium from 48Ca(208Pb, 2n), E=4.55 MeV/nucleon]; measured Eα, Iα(time), αα-coin; deduced α-decay energy spectrum, Iα vs time, T1/2, αFmαNo correlation, T1/2. 222Th, 218Ra, 214Rn(α)[from α-decays 230Pu to 226U to 232Th to218Ra to 214Rn]; measured α-decay trace 222Th to 218Ra to n, Eα, Iα(time), αα-coin, αα-correlations; deduced summary of α-decay chains starting with 227U, 229Np, 229,230Pu using also literature references.

doi: 10.5506/aphyspolb.49.613
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2018MO20      Acta Phys.Pol. B49, 605 (2018)

P.Mosat, S.Antalic, F.P.Hessberger, D.Ackermann, B.Andel, M.Block, S.Hofmann, Z.Kalaninova, B.Kindler, I.Kojouharov, M.Laatiaoui, B.Lommel, A.K.Mistry, K.Nishio, J.Piot, B.Sulignano, M.Vostinar

Total Kinetic Energy Measurements for Spontaneous Fission of 255, 256, 258Rf

RADIOACTIVITY 255,256,258Rf(SF) [Rf isotopes produced in fusion-evaporation reactions]; measured fission fragments kinetic energy vs fragment implantation depth using STIP BOX coincidences and anticoincidences; deduced TKE.

doi: 10.5506/aphyspolb.49.605
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2018RA11      Phys.Rev.Lett. 120, 232503 (2018)

S.Raeder, D.Ackermann, H.Backe, R.Beerwerth, J.C.Berengut, M.Block, A.Borschevsky, B.Cheal, P.Chhetri, Ch.E.Dullmann, V.A.Dzuba, E.Eliav, J.Even, R.Ferrer, V.V.Flambaum, S.Fritzsche, F.Giacoppo, S.Gotz, F.P.Hessberger, M.Huyse, U.Kaldor, O.Kaleja, J.Khuyagbaatar, P.Kunz, M.Laatiaoui, F.Lautenschlager, W.Lauth, A.K.Mistry, E.Minaya Ramirez, W.Nazarewicz, S.G.Porsev, M.S.Safronova, U.I.Safronova, B.Schuetrumpf, P.Van Duppen, T.Walther, C.Wraith, A.Yakushev

Probing Sizes and Shapes of Nobelium Isotopes by Laser Spectroscopy

NUCLEAR MOMENTS 252,253,254No; measured excitation spectra, hyperfine structure components; deduced nuclear magnetic and quadrupole moments, charge radii. Comparison with the state-of-the-art nuclear density functional calculations.

doi: 10.1103/PhysRevLett.120.232503
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2018SA45      Phys.Rev. C 98, 044307 (2018)

A.Saamark-Roth, L.G.Sarmiento, D.Rudolph, J.Ljungberg, B.G.Carlsson, C.Fahlander, U.Forsberg, P.Golubev, I.Ragnarsson, D.Ackermann, L.-L.Andersson, M.Block, H.Brand, D.M.Cox, A.Di Nitto, Ch.E.Dullmann, K.Eberhardt, J.Even, J.M.Gates, J.Gerl, K.E.Gregorich, C.J.Gross, R.-D.Herzberg, F.P.Hessberger, E.Jager, J.Khuyagbaatar, B.Kindler, I.Kojouharov, J.V.Kratz, J.Krier, N.Kurz, B.Lommel, A.Mistry, C.Mokry, J.P.Omtvedt, P.Papadakis, J.Runke, K.Rykaczewski, M.Schadel, H.Schaffner, B.Schausten, P.Thorle-Pospiech, N.Trautmann, T.Torres, A.Turler, A.Ward, N.Wiehl, A.Yakushev

Low-lying states in 219Ra and 215Rn: Sampling microsecond α-decaying nuclei

RADIOACTIVITY 219Ra(α)[from 243Am(48Ca, X), E=242.1, 245.0 MeV]; measured Eα, Iα, Eγ, Iγ, αγ-coin, α(x ray)-coin, α-α correlations using TASISpec at the TASCA, GSI facility. Pileup analysis and GEANT4 simulation of 219Ra to 215Rn decay. 219,219m,220,221Ra, 215,216,217Rn, 212,213Po, 219Fr, 215At(α); measured half-lives, Qα. 219Ra, 215Rn; deduced levels, J, π, isomer in 219Ra Comparison with shell model calculations and theoretical calculations of deformation, rotational states and α-decay rates, and with evaluated data in the ENSDF database.

doi: 10.1103/PhysRevC.98.044307
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2017FE10      Nat. Commun. 8, 14520 (2017)

R.Ferrer, A.Barzakh, B.Bastin, R.Beerwerth, M.Block, P.Creemers, H.Grawe, R.de Groote, P.Delahaye, X.Flechard, S.Franchoo, S.Fritzsche, L.P.Gaffney, L.Ghys, W.Gins, C.Granados, R.Heinke, L.Hijazi, M.Huyse, T.Kron, Yu.Kudryavtsev, M.Laatiaoui, N.Lecesne, M.Loiselet, F.Lutton, I.D.Moore, Y.Martínez, E.Mogilevskiy, P.Naubereit, J.Piot, S.Raeder, S.Rothe, H.Savajols, S.Sels, V.Sonnenschein, J-C.Thomas, E.Traykov, C.Van Beveren, P.Van den Bergh, P.Van Duppen, K.Wendt, A.Zadvornaya

Towards high-resolution laser ionization spectroscopy of the heaviest elements in supersonic gas jet expansion

NUCLEAR MOMENTS 212,213,214,215,227Ac; measured frequencies; deduced hfs spectra, magnetic dipole and electric quadrupole moments. In-gas laser ionization and spectroscopy (IGLIS) technique.

doi: 10.1038/ncomms14520
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2017GI07      Acta Phys.Pol. B48, 423 (2017)

F.Giacoppo, K.Blaum, M.Block, P.Chhetri, Ch.E.Dullmann, C.Droese, S.Eliseev, P.Filianin, S.Gotz, Y.Gusev, F.Herfurth, F.P.Hessberger, O.Kaleja, J.Khuyagbaatar, M.Laatiaoui, F.Lautenschlager, C.Lorenz, G.Marx, E.Minaya Ramirez, A.Mistry, Yu.N.Novikov, W.R.Plass, S.Raeder, D.Rodriguez, D.Rudolph, L.G.Sarmiento, C.Scheidenberger, L.Schweikhard, P.Thirolf, A.Yakushev

Recent Upgrades of the SHIPTRAP Setup: On the Finish Line Towards Direct Mass Spectroscopy of Superheavy Elements

doi: 10.5506/APhysPolB.48.423
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2017GR18      Phys.Rev. C 96, 054331 (2017)

C.Granados, P.Creemers, R.Ferrer, L.P.Gaffney, W.Gins, R.de Groote, M.Huyse, Yu.Kudryavtsev, Y.Martinez, S.Raeder, S.Sels, C.Van Beveren, P.Van den Bergh, P.Van Duppen, K.Wrzosek-Lipska, A.Zadvornaya, A.E.Barzakh, B.Bastin, P.Delahaye, L.Hijazi, N.Lecesne, F.Luton, J.Piot, H.Savajols, J.-C.Thomas, E.Traykov, R.Beerwerth, S.Fritzsche, M.Block, X.Flechard, S.Franchoo, L.Ghys, H.Grawe, R.Heinke, T.Kron, P.Naubereit, K.Wendt, M.Laatiaoui, I.Moore, V.Sonnenschein, M.Loiselet, E.Mogilevskiy, S.Rothe

In-gas laser ionization and spectroscopy of actinium isotopes near the N=126 closed shell

NUCLEAR MOMENTS 212,213,214,215,227Ac; measured optical hyperfine spectra by the in-gas laser ionization and spectroscopy (IGLIS) technique at the LISOL facility of Cyclotron Research Centre, Louvain-la-Neuve; deduced g factors, quadrupole moments and spins of the ground states, configurations. Comparison with large-scale nuclear-shell-model calculations. 212,213Ac produced in 197Au(20Ne, 5n), (20Ne, 4n), E=145 MeV. 214,215Ac produced in 197Au(22Ne, 5n), (22Ne, 4n), E=143 MeV.

RADIOACTIVITY 215Ac(α)[from 197Au(22Ne, 4n), E=143 MeV; measured Eα.

doi: 10.1103/PhysRevC.96.054331
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2017KO02      Phys.Lett. B 764, 265 (2017)

J.Konki, J.Khuyagbaatar, J.Uusitalo, P.T.Greenlees, K.Auranen, H.Badran, M.Block, R.Briselet, D.M.Cox, M.Dasgupta, A.Di Nitto, Ch.E.Dullmann, T.Grahn, K.Hauschild, A.Herzan, R.-D.Herzberg, F.P.Hessberger, D.J.Hinde, R.Julin, S.Juutinen, E.Jager, B.Kindler, J.Krier, M.Leino, B.Lommel, A.Lopez-Martens, D.H.Luong, M.Mallaburn, K.Nishio, J.Pakarinen, P.Papadakis, J.Partanen, P.Peura, P.Rahkila, K.Rezynkina, P.Ruotsalainen, M.Sandzelius, J.Saren, C.Scholey, J.Sorri, S.Stolze, B.Sulignano, Ch.Theisen, A.Ward, A.Yakushev, V.Yakusheva

Towards saturation of the electron-capture delayed fission probability: The new isotopes 240Es and 236Bk

RADIOACTIVITY 240Es(EC), (α), 236Bk(EC) [from 209Bi(34S, 3n)240Es, E=174, 178 MeV]; measured decay products, Eα, Iα; deduced T1/2, branching ratios, electron-capture delayed fission (ECDF) probability. Comparison with available data.

doi: 10.1016/j.physletb.2016.11.038
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2017LO13      Phys.Rev. C 96, 034315 (2017)

Ch.Lorenz, L.G.Sarmiento, D.Rudolph, D.E.Ward, M.Block, F.P.Hessberger, D.Ackermann, L.-L.Andersson, M.L.Cortes, C.Droese, M.Dworschak, M.Eibach, U.Forsberg, P.Golubev, R.Hoischen, I.Kojouharov, J.Khuyagbaatar, D.Nesterenko, I.Ragnarsson, H.Schaffner, L.Schweikhard, S.Stolze, J.Wenzl

Quantum-state-selective decay spectroscopy of 213Ra

RADIOACTIVITY 213Ra(α), (EC), (β+)[from 170Er(48Ca, 5n), E=4.30 MeV/nucleon using velocity filter SHIP and SHIPTRAP Penning trap at GSI UNILAC facility]; 209Rn(α), (EC), (β+)[from 213Ra α decay]; 213Fr(α), (EC), (β+)[from 213Ra EC decay]; 209At(α), (EC), (β+)[from 209Rn EC decay]; measured Eα, Iα, Eγ, Iγ, αγ-coin, (x ray)α-coin, α and EC+β+ branching ratios using TASISpec setup at GSI. GEANT4 simulations. 209Rn; deduced levels, α feedings, γ-ray branching ratios, multipolarity. Comparison with evaluated data, and Nilsson-Strutinsky and shell-model calculations. 209Rn; calculated levels, J, π using shell model with pbpop interaction, total energy surface in (ϵ2, ϵ4) plane, and compared with experimental data, and other theoretical calculations.

doi: 10.1103/PhysRevC.96.034315
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2017NE05      J.Phys.(London) G44, 065103 (2017)

D.A.Nesterenko, A.Kankainen, L.Canete, M.Block, D.Cox, T.Eronen, C.Fahlander, U.Forsberg, J.Gerl, P.Golubev, J.Hakala, A.Jokinen, V.S.Kolhinen, J.Koponen, N.Lalovic, C.Lorenz, I.D.Moore, P.Papadakis, J.Reinikainen, S.Rinta-Antila, D.Rudolph, L.G.Sarmiento, A.Voss, J.Aysto

High-precision mass measurements for the isobaric multiplet mass equation at A = 52

ATOMIC MASSES 52Co, 52mCo, 52Fe, 52mFe, 52Mn; measured time-of-flight ion cyclotron resonance spectrum, average cyclotron frequency ratios; deduced mass-excess values. Comparison with Nubase2012 mass values.

doi: 10.1088/1361-6471/aa67ae
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2016FE11      Nat. Commun. 8, 14520 (2016), See 2017FE10

R.Ferrer, A.Barzakh, B.Bastin, R.Beerwerth, M.Block, P.Creemers, H.Grawe, R.de Groote, P.Delahaye, X.Flechard, S.Franchoo, S.Fritzsche, L.P.Gaffney, L.Ghys, W.Gins, C.Granados, R.Heinke, L.Hijazi, M.Huyse, T.Kron, Yu.Kudryavtsev, M.Laatiaoui, N.Lecesne, M.Loiselet, F.Lutton, I.D.Moore, Y.Martinez, E.Mogilevskiy, P.Naubereit, J.Piot, S.Raeder, S.Rothe, H.Savajols, S.Sels, V.Sonnenschein, J-C.Thomas, E.Traykov, C.Van Beveren, P.Van den Bergh, P.Van Duppen, K.Wendt, A.Zadvornaya

Towards high-resolution laser ionization spectroscopy of the heaviest elements in supersonic gas jet expansion

NUCLEAR MOMENTS 212,213,214,215,227Ac; measured frequencies; deduced nuclear magnetic moments, electric quadrupole moments, radii. Comparison with theoretical calculations, experimental data.

doi: 10.1038/ncomms14520
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2016FI07      Phys.Lett. B 758, 407 (2016)

P.Filianin, S.Schmidt, K.Blaum, M.Block, S.Eliseev, F.Giacoppo, M.Goncharov, F.Lautenschlaeger, Yu.Novikov, K.Takahashi

The decay energy of the pure s-process nuclide 123Te

ATOMIC MASSES 123Te, 123Sb; measured cyclotron resonance frequencies; deduced Q-values, s-process decay rate. Comparison with available data.

doi: 10.1016/j.physletb.2016.04.059
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2016FO10      Nucl.Phys. A953, 117 (2016)

U.Forsberg, D.Rudolph, L.-L.Andersson, A.Di Nitto, Ch.E.Dullmann, C.Fahlander, J.M.Gates, P.Golubev, K.E.Gregorich, C.J.Gross, R.-D.Herzberg, F.P.Hessberger, J.Khuyagbaatar, J.V.Kratz, K.Rykaczewski, L.G.Sarmiento, M.Schadel, A.Yakushev, S.Aberg, D.Ackermann, M.Block, H.Brand, B.G.Carlsson, D.Cox, X.Derkx, J.Dobaczewski, K.Eberhardt, J.Even, J.Gerl, E.Jager, B.Kindler, J.Krier, I.Kojouharov, N.Kurz, B.Lommel, A.Mistry, C.Mokry, W.Nazarewicz, H.Nitsche, J.P.Omtvedt, P.Papadakis, I.Ragnarsson, J.Runke, H.Schaffner, B.Schausten, Y.Shi, P.Thorle-Pospiech, T.Torres, T.Traut, N.Trautmann, A.Turler, A.Ward, D.E.Ward, N.Wiehl

Recoil-α-fission and recoil-α-α- fission events observed in the reaction 48Ca + 243Am

NUCLEAR REACTIONS 243Am(48Ca, x), E=242.1, 245.0 MeV; measured reaction products, fission products, Eα, Iα(t), αα-coin, (recoil)α-coin, En, In using He-gas filled TASCA, TASISpec based on DSSSDs, other DSSSDs; deduced correlation times, α energy spectra, 23 α-decay chains of five α's and α+3n, fragments T1/2. Discussed existence of long decay chains; compared with published results.

RADIOACTIVITY 289,288Mc, 284Nh, 280Rg, 276Mt, 272Bh(α), 268Db(SF); measured decay products, Eα, Iα; deduced T1/2. Comparison with available data.

doi: 10.1016/j.nuclphysa.2016.04.025
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2016FO16      Phys.Lett. B 760, 293 (2016)

U.Forsberg, D.Rudolph, C.Fahlander, P.Golubev, L.G.Sarmiento, S.Aberg, M.Block, Ch.E.Dullmann, F.P.Hessberger, J.V.Kratz, A.Yakushev

A new assessment of the alleged link between element 115 and element 117 decay chains

NUCLEAR STRUCTURE 293Ts, 289Mc; analyzed available data; deduced cross-reaction link between α-decay chains.

doi: 10.1016/j.physletb.2016.07.008
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2016HE08      Eur.Phys.J. A 52, 192 (2016)

F.P.Hessberger, S.Antalic, A.K.Mistry, D.Ackermann, B.Andel, M.Block, Z.Kalaninova, B.Kindler, I.Kojouharov, M.Laatiaoui, M.Laatiaoui, B.Lommel, J.Piot, M.Vostinar

Alpha- and EC-decay measurements of 257Rf

RADIOACTIVITY 257Rf(α), (EC); measured Eα, Iα, Eγ, Iγ, γα-coin, γα delayed coin, γα correlations, conversion electrons, X-rays using Ge clover detector for γ, ADC, TAC. 257Rf deduced enhanced α-decay scheme, new transition from 70 keV level to 724 level in 253No, possible EC-decay scheme. 253No deduced levels, new E1 γ transition from 724 keV to 167 keV level. 257Lr deduced T1/2. Experimental levels in 245Pu, 247Cm, 249Cf, 251Fm, 253No, 255Rf compared with published calculations for the same nuclei (plus 257Sg).

doi: 10.1140/epja/i2016-16192-0
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2016HE15      Eur.Phys.J. A 52, 328 (2016)

F.P.Hessberger, S.Antalic, D.Ackermann, B.Andel, M.Block, Z.Kalaninova, B.Kindler, I.Kojouharov, M.Laatiaoui, B.Lommel, A.K.Mistry, J.Piot, M.Vostinar

Investigation of electron capture decay of 258Db and α decay of 258Rf

RADIOACTIVITY 258Db(EC), 258Rf(α), (SF); measured 258Db K-shell X-rays, Eγ, Iγ(t), CE, (X-ray)(CE)-coin; measured 258Rf spontaneous fission, Eα, Iα; measured delayed coin between 258Db and 258Rf decays; deduced isomeric states, T1/2; deduced 258Rf α branch decay, α branching ratio, mass excess using 254No mass excess. Halflives compared with those measured by different types of correlation, mass excess compared with systematics for e-e nuclei.

doi: 10.1140/epja/i2016-16328-2
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2016KO45      Nat. Commun. 7, 10246 (2016)

F.Kohler, K.Blaum, M.Block, S.Chenmarev, S.Eliseev, D.A.Glazov, M.Goncharov, J.Hou, A.Kracke, D.A.Nesterenko, Y.N.Novikov, W.Quint, E.Minaya Ramirez, V.M.Shabaev, S.Sturm, A.V.Volotka, G.Werth

Isotope dependence of the Zeeman effect in lithium-like calcium

ATOMIC MASSES 40,48Ca; measured cyclotron frequency ratio. 48Ca; deduced masses, g-factors. Comparison with theoretical calculations.

doi: 10.1038/ncomms10246
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2016LA25      Nature(London) 535, 495 (2016)

M.Laatiaoui, W.Lauth, H.Backe, Mi.Block, D.Ackermann, B.Cheal, P.Chhetri, C.E.Dullmann, P.van Duppen, J.Even, R.Ferrer, F.Giacoppo, S.Gotz, F.P.Hessberger, M.Huyse, O.Kaleja, J.Khuyagbaatar, P.Kunz, F.Lautenschlager, A.K.Mistry, S.Raeder, E.Minaya Ramirez, T.Walther, C.Wraith, A.Yakushev

Atom-at-a-time laser resonance ionization spectroscopy of nobelium

NUCLEAR REACTIONS 206,208Pb(48Ca, 2n), E=217 MeV; measured reaction products; deduced σ, ground-state transition, an upper limit for the ionization potential of nobelium.

doi: 10.1038/nature19345
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2015AU02      At.Data Nucl.Data Tables 103-104, 1 (2015); See 2014PF01

G.Audi, K.Blaum, M.Block, G.Bollen, S.Goriely, J.C.Hardy, F.Herfurth, F.G.Kondev, H.-J.Kluge, D.Lunney, J.M.Pearson, G.Savard, K.S.Sharma, M.Wang, Y.H.Zhang

Comment on "Atomic mass compilation 2012" by B. Pfeiffer, K. Venkataramaniah, U. Czok, C. Scheidenberger

COMPILATION 45Cr, 47Ar, 65As, 73Ge, 100Sn, 286Nh; compiled experimental atomic masses; deduced differences with work of B. Pfeiffer et al.

doi: 10.1016/j.adt.2014.05.003
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2015BA55      Nucl.Phys. A944, 492 (2015)

H.Backe, W.Lauth, M.Block, M.Laatiaoui

Prospects for laser spectroscopy, ion chemistry and mobility measurements of superheavy elements in buffer-gas traps

RADIOACTIVITY 240Am(SF); measured fission isomers using single-atom laser spectroscopy; deduced isotope shift, isomer shift.

doi: 10.1016/j.nuclphysa.2015.07.002
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2015BL06      Nucl.Phys. A944, 471 (2015)

M.Block

Direct mass measurements of the heaviest elements with Penning traps

doi: 10.1016/j.nuclphysa.2015.09.009
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2015EL03      Phys.Rev.Lett. 115, 062501 (2015)

S.Eliseev, K.Blaum, M.Block, S.Chenmarev, H.Dorrer, Ch.E.Dullmann, C.Enss, P.E.Filianin, L.Gastaldo, M.Goncharov, U.Koster, F.Lautenschlager, Yu.N.Novikov, A.Rischka, R.X.Schussler, L.Schweikhard, A.Turler

Direct Measurement of the Mass Difference of 163Ho and 163Dy Solves the Q-Value Puzzle for the Neutrino Mass Determination

ATOMIC MASSES 163Ho, 163Dy; measured period of the cyclotron frequencies; deduced Q-values, mass differences. Comparison with the Atomic Mass Evaluation 2012.

doi: 10.1103/PhysRevLett.115.062501
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2015GA24      Phys.Rev. C 92, 021301 (2015)

J.M.Gates, K.E.Gregorich, O.R.Gothe, E.C.Uribe, G.K.Pang, D.L.Bleuel, M.Block, R.M.Clark, C.M.Campbell, H.L.Crawford, M.Cromaz, A.Di Nitto, Ch.E.Dullmann, N.E.Esker, C.Fahlander, P.Fallon, R.M.Farjadi, U.Forsberg, J.Khuyagbaatar, W.Loveland, A.O.Macchiavelli, E.M.May, P.R.Mudder, D.T.Olive, A.C.Rice, J.Rissanen, D.Rudolph, L.G.Sarmiento, J.A.Shusterman, M.A.Stoyer, A.Wiens, A.Yakushev, H.Nitsche

Decay spectroscopy of element 115 daughters: 280Rg → 276Mt and 276Mt → 272Bh

NUCLEAR REACTIONS 243Am(48Ca, 3n)288Mc, E=262 MeV; measured evaporation residues (EVRs) by magnetic rigidities, Eα, SF-like events, decay chains using corner-cube-clover (C3) focal plane detector consisting of silicon-strip detectors surrounded by HPGe clover-type detectors, and DSSSDs for α particles at LBNL cyclotron facility; deduced data for forty-six decay chains from the decay of 288Mc and its α daughter products 284Nh, 280Rg, 276Mt, 272Bh, 268Db, the 268Db decaying by SF events.

RADIOACTIVITY 276Mt, 280Rg(α)[from α decay chain of 288Mc formed in 243Am(48Ca, 3n), E=262 MeV at LBNL cyclotron facility]; measured Eα, Iα, Eγ, Iγ, E(x rays), αγ-, α(x ray)-, γγ-coin, half-lives of 276Mt and 280Rg isotopes. 272Bh, 276Mt; deduced levels, multipolarities, α hindrance factors. GEANT4 simulations of α and photon spectra. No K-x rays were definitely assigned thus uncertain Z identification.

doi: 10.1103/PhysRevC.92.021301
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2015KH09      Phys.Rev.Lett. 115, 242502 (2015)

J.Khuyagbaatar, A.Yakushev, Ch.E.Dullmann, D.Ackermann, L.L-.Andersson, M.Block, H.Brand, D.M.Cox, J.Even, U.Forsberg, P.Golubev, W.Hartmann, R.-D.Herzberg, F.P.Hessberger, J.Hoffmann, A.Hubner, E.Jager, J.Jeppsson, b.Kindler, J.V.Kratz, J.Krier, N.Kurz, B.Lommel, M.Maiti, S.Minami, A.K.Mistry, C.M.Mrosek, I.Pysmenetska, D.Rudolph, L.G.Sarmiento, H.Schaffner, M.Schadel, B.Schausten, J.Steiner, T.Torres De Heidenreich, J.Uusitalo, M.Wegrzecki, N.Wiehl, V.Yakusheva

New Short-Lived Isotope 221U and the Mass Surface Near N = 126

RADIOACTIVITY 221,222U, 218Ac(α) [from 176Yb(50Ti, X)221U/222U, E=231-255 MeV]; measured decay products, Eα, Iα. 214,215Ra, 217,218,219Th, 214Fr, 221,222U; deduced T1/2, Q-values. A fast data readout technique, comparison with FRDM95 and HFB26 calculations.

doi: 10.1103/PhysRevLett.115.242502
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2015RU11      J.Radioanal.Nucl.Chem. 303, 1185 (2015)

D.Rudolph, U.Forsberg, P.Golubev, L.G.Sarmiento, A.Yakushev, L.-L.Andersson, A.Di Nitto, Ch.E.Dullmann, J.M.Gates, K.E.Gregorich, C.J.Gross, R.-D.Herzberg, F.P.Hessberger, J.Khuyagbaatar, J.V.Kratz, K.Rykaczewski, M.Schadel, S.Aberg, D.Ackermann, M.Block, H.Brand, B.G.Carlsson, D.Cox, X.Derkx, K.Eberhardt, J.Even, C.Fahlander, J.Gerl, E.Jager, B.Kindler, J.Krier, I.Kojouharov, N.Kurz, B.Lommel, A.Mistry, C.Mokry, H.Nitsche, J.P.Omtvedt, P.Papadakis, I.Ragnarsson, J.Runke, H.Schaffner, B.Schausten, P.Thorle-Pospiech, T.Torres, T.Traut, N.Trautmann, A.Turler, A.Ward, D.E.Ward, N.Wiehl

Selected spectroscopic results on element 115 decay chains

RADIOACTIVITY 288Mc, 284Nh, 280Rg, 276Mt, 272Bh(α), 268Db(SF); measured decay products, Eα, Iα; deduced Q-values, level energies, branching ratios. Comparison with GEANT4 Monte-Carlo simulations.

doi: 10.1007/s10967-014-3445-y
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2015SC13      Eur.Phys.J. A 51, 89 (2015)

F.Schneider, T.Beyer, K.Blaum, M.Block, S.Chenmarev, H.Dorrer, Ch.E.Dullmann, K.Eberhardt, M.Eibach, S.Eliseev, J.Grund, U.Koster, Sz.Nagy, Yu.N.Novikov, D.Renisch, A.Turler, K.Wendt

Preparatory studies for a high-precision Penning-trap measurement of the 163Ho electron capture Q-value

doi: 10.1140/epja/i2015-15089-8
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2014EI01      Phys.Rev. C 89, 064318 (2014)

M.Eibach, T.Beyer, K.Blaum, M.Block, Ch.E.Dullmann, K.Eberhardt, J.Grund, Sz.Nagy, H.Nitsche, W.Nortershauser, D.Renisch, K.P.Rykaczewski, F.Schneider, C.Smorra, J.Vieten, M.Wang, K.Wendt

Direct high-precision mass measurements on 241, 243Am, 244Pu, and 249Cf

ATOMIC MASSES 241,243Am, 244Pu, 249Cf; measured Time-of-flight spectrum of carbon cluster ions, cyclotron frequencies by TOF-ICR technique using TRIGA-TRAP Penning-trap mass spectrometer at Mainz; deduced masses. Comparison with data in AME-2012. Analyzed AME-2012 masses of 84 nuclides in Z=82-112, N=129-166 region, and improved uncertainties with the use of new mass measurements in this work.

doi: 10.1103/PhysRevC.89.064318
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2014KH04      Phys.Rev.Lett. 112, 172501 (2014)

J.Khuyagbaatar, A.Yakushev, C.E.Dullmann, D.Ackermann, L.-L.Andersson, M.Asai, M.Block, R.A.Boll, H.Brand, D.M.Cox, M.Dasgupta, X.Derkx, A.Di Nitto, K.Eberhardt, J.Even, M.Evers, C.Fahlander, U.Forsberg, J.M.Gates, N.Gharibyan, P.Golubev, K.E.Gregorich, J.H.Hamilton, W.Hartmann, R.-D.Herzberg, F.P.Hessberger, D.J.Hinde, J.Hoffmann, R.Hollinger, A.Hubner, E.Jager, B.Kindler, J.V.Kratz, J.Krier, N.Kurz, M.Laatiaoui, S.Lahiri, R.Lang, B.Lommel, M.Maiti, K.Miernik, S.Minami, A.Mistry, C.Mokry, H.Nitsche, J.P.Omtvedt, G.K.Pang, P.Papadakis, D.Renisch, J.Roberto, D.Rudolph, J.Runke, K.P.Rykaczewski, L.G.Sarmiento, M.Schadel, B.Schausten, A.Semchenkov, D.A.Shaughnessy, P.Steinegger, J.Steiner, E.E.Tereshatov, P.Thorle-Pospiech, K.Tinschert, T.Torres De Heidenreich, N.Trautmann, A.Turler, J.Uusitalo, D.E.Ward, M.Wegrzecki, N.Wiehl, S.M.Van Cleve, V.Yakusheva

48Ca + 249Bk Fusion Reaction Leading to Element Z=117: Long-Lived α-Decaying 270Db and Discovery of 266Lr

NUCLEAR REACTIONS 249Bk(48Ca, X)294Ts, E=268.3, 270.2, 274.1 MeV; measured reaction products, Eα, Iα; deduced σ. Comparison with experimental data.

RADIOACTIVITY 294Ts, 290Mc, 286Nh, 282Rg, 278Mt, 274Bh, 270Db, 266Lr(α); measured decay products, Eα, Iα; deduced T1/2. Comparison with experimental data.

doi: 10.1103/PhysRevLett.112.172501
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2014NE15      Phys.Rev. C 90, 042501 (2014)

D.A.Nesterenko, S.Eliseev, K.Blaum, M.Block, S.Chenmarev, A.Dorr, C.Droese, P.E.Filianin, M.Goncharov, E.Minaya Ramirez, Yu.N.Novikov, L.Schweikhard, V.V.Simon

Direct determination of the atomic mass difference of 187Re and 187Os for neutrino physics and cosmochronology

ATOMIC MASSES 187Re, 187Os; measured cyclotron-frequency ratio of 187Re and 187Os ions, mass difference using Penning-trap mass spectrometer SUIPTRAP at GSI facility; deduced Q value for 187Re decay. Comparison with previous experimental results. Possibility of electron capture by 187Os ions in hot stellar conditions.

RADIOACTIVITY 187Re(β-); measured precise Q value from mass difference of 187Re and 187Os ions using SHIPTRAP at GSI. Comparison with other results. Relevance to cosmochronology.

doi: 10.1103/PhysRevC.90.042501
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2014RU04      Acta Phys.Pol. B45, 263 (2014)

D.Rudolph, U.Forsberg, P.Golubev, L.G.Sarmiento, A.Yakushev, L.-L.Andersson, A.Di Nitto, Ch.E.Dullmann, J.M.Gates, K.E.Gregorich, C.J.Gross, R.-D.Herzberg, F.P.Hessberger, J.Khuyagbaatar, J.V.Kratz, K.Rykaczewski, M.Schadel, S.Aberg, D.Ackermann, M.Block, H.Brand, B.G.Carlsson, D.Cox, X.Derkx, K.Eberhardt, J.Even, C.Fahlander, J.Gerl, E.Jager, B.Kindler, J.Krier, I.Kojouharov, N.Kurz, B.Lommel, A.Mistry, C.Mokry, H.Nitsche, J.P.Omtvedt, P.Papadakis, I.Ragnarsson, J.Runke, H.Schaffner, B.Schausten, P.Thorle-Pospiech, T.Torres, T.Traut, N.Trautmann, A.Turler, A.Ward, D.E.Ward, N.Wiehl

Alpha-Photon Coincidence Spectroscopy Along Element 115 Decay Chains

RADIOACTIVITY 287,288Mc, 283,284Nh, 279,280Rg, 275,276Mt, 271,272Bh(α), 267,268Db(SF) [from 243Am(48Ca, X), E not given]; measured decay products, Eα, Iα, Eγ, Iγ, X-rays; deduced T1/2, correlated α-decay chains. Comparison with available data.

doi: 10.5506/APhysPolB.45.263
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2014YA33      Inorg. Chem. 53, 1624 (2014)

A.Yakushev, J.M.Gates, A.Turler, M.Schadel, C.E.Dullmann, D.Ackermann, L.-L.Andersson, M.Block, W.Bruchle, J.Dvorak, K.Eberhardt, H.G.Essel, J.Even, U.Forsberg, A.Gorshkov, R.Graeger, K.E.Gregorich, W.Hartmann, R.-D.Herzberg, F.P.Hessberger, D.Hild, A.Hubner, E.Jager, J.Khuyagbaatar, B.Kindler, J.V.Kratz, J.Krier, N.Kurz, B.Lommel, L.J.Niewisch, H.Nitsche, J.P.Omtvedt, E.Parr, Z.Qin, D.Rudolph, J.Runke, B.Schausten, E.Schimpf, A.Semchenkov, J.Steiner, P.Thorle-Pospiech, J.Uusitalo, M.Wegrzecki, N.Wiehl

Superheavy Element Flerovium (Element 114) Is a Volatile Metal

NUCLEAR REACTIONS 244Pu(48Ca, Xn)288Fl/289Fl, E=259.4 MeV; measured reaction products, Eα, Iα; deduced two atoms of flerovium, the observed adsorption behavior of Fl points to a higher inertness compared to its nearest homologue in the group, Pb. However, the measured lower limit for the adsorption enthalpy of Fl on a Au surface points to the formation of a metal-metal bond of Fl with Au. Fl is the least reactive element in the group, but still a metal.

doi: 10.1021/ic4026766
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2013AN08      Acta Phys.Pol. B44, 387 (2013)

S.Antalic, F.P.Hessberger, D.Ackermann, M.Block, S.Heinz, S.Hofmann, Z.Kalaninova, B.Kindler, M.Leino, B.Lommel, R.Mann, K.Nishio, S.Saro, B.Sulignano

Nuclear Structure of Heavy N = 153 Isotones

NUCLEAR REACTIONS 206Pb(54Cr, n)259Sg, E=257-270 MeV; measured reaction products; deduced σ.

RADIOACTIVITY 259Sg(α) [from 206Pb(54Cr, n)259Sg, E=257-270 MeV]; measured decay products, Eα, Iα; deduced T1/2 for isomeric states.

doi: 10.5506/APhysPolB.44.387
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2013DR04      Eur.Phys.J. A 49, 13 (2013)

C.Droese, D.Ackermann, L.-L.Andersson, K.Blaum, M.Block, M.Dworschak, M.Eibach, S.Eliseev, U.Forsberg, E.Haettner, F.Herfurth, F.P.Hessberger, S.Hofmann, J.Ketelaer, G.Marx, E.Minaya Ramirez, D.Nesterenko, Yu.N.Novikov, W.R.Plass, D.Rodriguez, D.Rudolph, C.Scheidenberger, L.Schweikhard, S.Stolze, P.G.Thirolf, C.Weber

High-precision mass measurements of 203-207Rn and 213Ra with SHIPTRAP

NUCLEAR REACTIONS Dy(48Ca, 204Rn), (48Ca, 205Rn), (48Ca, 206Rn), (48Ca, 207Rn), E=4.4 MeV/nucleon;170Er(48Ca, 213Ra), E=4.4 MeV;170Er(40Ar, 203Rn), (40Ar, 204Rn), (40Ar, 205Rn), E=4.7 MeV/nucleon;160Gd(50Ti, 204Rn), (40Ar, 205Rn), (40Ar, 206Rn), E=4.55 MeV/nucleon; measured evaporation residues, frequency ratio using tandem Penning trap spectrometer SHIPTRAP; deduced σ, mass excess, 2n separation energy; calculated σ using statistical model code HIVAP. Compared with AME; 2n separation energy compared with trends for Pb, Po, Rn, Ra.

ATOMIC MASSES 203,204,205,206,207Rn, 213Ra; measured frequency ratio, number of resonances; deduced mass. Compared with AME 2003.

doi: 10.1140/epja/i2013-13013-0
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2013EL01      Phys.Rev.Lett. 110, 082501 (2013)

S.Eliseev, K.Blaum, M.Block, C.Droese, M.Goncharov, E.Minaya Ramirez, D.A.Nesterenko, Yu.N.Novikov, L.Schweikhard

Phase-Imaging Ion-Cyclotron-Resonance Measurements for Short-Lived Nuclides

ATOMIC MASSES 129,130Xe; measured cyclotron frequency via the projection of the ion motion; deduced mass difference for xenon nuclei. Phase-imaging ion-cyclotron-resonance technique.

doi: 10.1103/PhysRevLett.110.082501
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2013RO19      Eur.Phys.J. D 67, 146 (2013)

C.Roux, K.Blaum, M.Block, C.Droese, S.Eliseev, M.Goncharov, F.Herfurth, E.Minaya Ramirez, D.A.Nesterenko, Y.N.Novikov, L.Schweikhard

Data analysis of Q-value measurements for double-electron capture with SHIPTRAP

RADIOACTIVITY 152Gd(2EC); measured cyclotron frequency ratio; deduced Q-value. Comparison with available data.

doi: 10.1140/epjd/e2013-40110-x
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2013RU11      Phys.Rev.Lett. 111, 112502 (2013)

D.Rudolph, U.Forsberg, P.Golubev, L.G.Sarmiento, A.Yakushev, L.-L.Andersson, A.Di Nitto, Ch.E.Dullmann, J.M.Gates, K.E.Gregorich, C.J.Gross, F.P.Hessberger, R.-D.Herzberg, J.Khuyagbaatar, J.V.Kratz, K.Rykaczewski, M.Schadel, S.Aberg, D.Ackermann, M.Block, H.Brand, B.G.Carlsson, D.Cox, X.Derkx, K.Eberhardt, J.Even, C.Fahlander, J.Gerl, E.Jager, B.Kindler, J.Krier, I.Kojouharov, N.Kurz, B.Lommel, A.Mistry, C.Mokry, H.Nitsche, J.P.Omtvedt, P.Papadakis, I.Ragnarsson, J.Runke, H.Schaffner, B.Schausten, P.Thorle-Pospiech, T.Torres, T.Traut, N.Trautmann, A.Turler, A.Ward, D.E.Ward, N.Wiehl

Spectroscopy of Element 115 Decay Chains

RADIOACTIVITY 288Mc, 284Nh, 280Rg, 276Mt, 272Bh(α) [from 243Am(48Ca, X), E=5.4 MeV/nucleon]; measured decay products, Eα, Iα, Eγ, Iγ, X-rays. 280Rg, 276Mt; deduced T1/2, Q-value, α-decay scheme. Comparison with Monte Carlo calculations.

doi: 10.1103/PhysRevLett.111.112502
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2012DR01      Nucl.Phys. A875, 1 (2012)

C.Droese, K.Blaum, M.Block, S.Eliseev, F.Herfurth, E.Minaya-Ramirez, Yu.N.Novikov, L.Schweikhard, V.M.Shabaev, I.I.Tupitsyn, S.Wycech, K.Zuber, N.A.Zubova

Probing the nuclide 180W for neutrinoless double-electron capture exploration

RADIOACTIVITY 180W(2EC); measured cyclotron frequency using Penning trap mass ratios using SHIPTRAP; deduced Q value, T1/2.

ATOMIC MASSES 180Hf, 180W; measured cyclotron frequency ratios using SHIPTRAP Penning trap; deduced Q.

doi: 10.1016/j.nuclphysa.2011.11.008
Citations: PlumX Metrics


2012FO03      Acta Phys.Pol. B43, 305 (2012)

U.Forsberg, P.Golubev, L.G.Sarmiento, J.Jeppsson, D.Rudolph, L.-L.Andersson, D.Ackermann, M.Asai, M.Block, K.Eberhardt, J.Even, Ch.E.Dullmann, J.Dvorak, J.M.Gates, K.E.Gregorich, R.-D.Herzberg, F.P.Hessberger, E.Jager, J.Khuyagbaatar, I.Kojouharov, J.V.Kratz, J.Krier, N.Kurz, S.Lahiri, B.Lommel, M.Maiti, E.Merchan, J.P.Omtvedt, E.Parr, J.Runke, H.Schaffner, M.Schadel, A.Yakushev

First Experiment at TASCA Towards X-Ray Fingerprinting of Element 115 Decay Chains

NUCLEAR REACTIONS 208Pb(48Ca, 2n)254No, E=4.59 MeV/nucleon; measured reaction fusion-evaporation products; deduced distribution of evaporation residue. Comparison with theoretical calculations.

doi: 10.5506/APhysPolB.43.305
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2012HO12      Eur.Phys.J. A 48, 62 (2012)

S.Hofmann, S.Heinz, R.Mann, J.Maurer, J.Khuyagbaatar, D.Ackermann, S.Antalic, W.Barth, M.Block, H.G.Burkhard, V.F.Comas, L.Dahl, K.Eberhardt, J.Gostic, R.A.Henderson, J.A.Heredia, F.P.Hessberger, J.M.Kenneally, B.Kindler, I.Kojouharov, J.V.Kratz, R.Lang, M.Leino, B.Lommel, K.J.Moody, G.Munzenberg, S.L.Nelson, K.Nishio, A.G.Popeko, J.Runke, S.Saro, D.A.Shaughnessy, M.A.Stoyer, P.Thorle-Pospiech, K.Tinschert, N.Trautmann, J.Uusitalo, P.A.Wilk, A.V.Yeremin

The reaction 48Ca + 248Cm → 296116* studied at the GSI-SHIP

NUCLEAR REACTIONS 248Cm(48Ca, X)292Lv/293Lv, E=265.4, 270.2 MeV; measured reaction products, Eα, Iα(t) from 116 decay, 116 fission using SHIP velocity filter. 288,289Fl, 284,285Cn, 281Ds, 277Hs; deduced σ, T1/2, ground state quadrupole deformation, quasiparticle excitations, Q-values for different α decay chains. Comparison with other data.

doi: 10.1140/epja/i2012-12062-1
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetA0938.


2012KH11      Phys.Rev. C 86, 064602 (2012)

J.Khuyagbaatar, K.Nishio, S.Hofmann, D.Ackermann, M.Block, S.Heinz, F.P.Hessberger, K.Hirose, H.Ikezoe, B.Kinlder, B.Lommel, H.Makii, S.Mitsuoka, I.Nishinaka, T.Ohtsuki, Y.Wakabayashi, S.Yan

Evidence for hindrance in fusion between sulfur and lead nuclei

NUCLEAR REACTIONS 204,206,208Pb(34S, F), (36S, F), E=160-200 MeV; measured fission fragments, fission and ER σ at JAEA facility. Comparison with coupled-channel (HIVAP) calculations. Influence of coupling to the vibrational states in 34S.

doi: 10.1103/PhysRevC.86.064602
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetE2413.


2012MI27      Science 337, 1207 (2012)

E.Minaya-Ramirez, D.Ackermann, K.Blaum, M.Block, C.Droese, C.E.Dullmann, M.Dworschak, M.Eibach, S.Eliseev, E.Haettner, F.Herfurth, F.P.Hessberger, S.Hofmann, J.Ketelaer, G.Marx, M.Mazzocco, D.Nesterenko, Y.N.Novikov, W.R.Plass, D.Rodriguez, C.Scheidenberger, L.Schweikhard, P.G.Thirolf, C.Weber

Direct Mapping of Nuclear Shell Effects in the Heaviest Elements

ATOMIC MASSES 252,253,254,255No, 255,256Lr; measured time-of-flight ion-cyclotron-resonance; deduced frequency ratios, mass excess. Comparison with theoretical calculations, SHIPTRAP results.

doi: 10.1126/science.1225636
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2012NE10      Phys.Rev. C 86, 044313 (2012)

D.A.Nesterenko, K.Blaum, M.Block, C.Droese, S.Eliseev, F.Herfurth, E.Minaya Ramirez, Yu.N.Novikov, L.Schweikhard, V.M.Shabaev, M.V.Smirnov, I.I.Tupitsyn, K.Zuber, N.A.Zubova

Double-β transformations in isobaric triplets with mass numbers A=124, 130, and 136

ATOMIC MASSES 124Sn, 124Xe, 124Te, 130Te, 130Xe, 130Ba, 136Ce; measured time-of-flight ion cyclotron resonances, cyclotron frequencies ratios of 130Xe to 130Ba and 130Te, 124Te to 124Xe and 124Sn, 136Ba to 136Ce using Penning-trap mass spectrometer SHIPTRAP. Isobaric mass triplets.

RADIOACTIVITY 124Xe, 130Ba, 136Ce(2EC); measured masses, deduced Q values.

doi: 10.1103/PhysRevC.86.044313
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2012SM01      Phys.Rev. C 85, 027601 (2012)

C.Smorra, T.Beyer, K.Blaum, M.Block, Ch.E.Dullmann, K.Eberhardt, M.Eibach, S.Eliseev, Sz.Nagy, W.Nortershauser, D.Renisch

Direct mass measurements of cadmium and palladium isotopes and their double-β transition Q values

ATOMIC MASSES 106,108,110Cd, 106,108,110Pd; measured cyclotron frequency ratios, masses and mass excesses by Penning-trap mass spectrometers SHIPTRAP and ISOLTRAP. Comparison with AME-2003 evaluation.

RADIOACTIVITY 106,108Cd(2β+), (2EC); 110Pd(2β-); measured Q values by Penning-trap mass spectrometers. Comparison with AME-2003 evaluation.

doi: 10.1103/PhysRevC.85.027601
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2012SM07      Phys.Rev. C 86, 044604 (2012)

C.Smorra, T.R.Rodriguez, T.Beyer, K.Blaum, M.Block, Ch.E.Dullmann, K.Eberhardt, M.Eibach, S.Eliseev, K.Langanke, G.Martinez-Pinedo, Sz.Nagy, W.Nortershauser, D.Renisch, V.M.Shabaev, I.I.Tupitsyn, N.A.Zubova

Q value and half-life of double-electron capture in 184Os

ATOMIC MASSES 184Os, 184W; measured time-of-flight and cyclotron frequency ratios using Penning-trap mass spectrometer TRIGA-TRAP; deduced mass excess, Q value for 2β decay.

RADIOACTIVITY 184Os(2EC); measured Q-value using Penning-trap; calculated nuclear matrix element, T1/2. Energy density functional (EDF) calculations.

doi: 10.1103/PhysRevC.86.044604
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2011BL09      J.Phys.:Conf.Ser. 312, 092001 (2011)

K.Blaum, M.Block, R.B.Cakirli, S.Eliseev, M.Kowalska, S.Kreim, Y.A.Litvinov, Sz.Nagy, W.Nortershauser, D.T.Yordanov

Measurements of ground-state properties for nuclear structure studies by precision mass and laser spectroscopy

NUCLEAR STRUCTURE 7,8,9,10,11Be; calculated charge radius using FMD (fermionic molecular dynamics); compared with data obtained from isotope shift.

doi: 10.1088/1742-6596/312/9/092001
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2011EL02      Phys.Rev.Lett. 106, 052504 (2011)

S.Eliseev, C.Roux, K.Blaum, M.Block, C.Droese, F.Herfurth, H.-J.Kluge, M.I.Krivoruchenko, Yu.N.Novikov, E.Minaya-Ramirez, L.Schweikhard, V.M.Shabaev, F.Simkovic, I.I.Tupitsyn, K.Zuber, N.A.Zubova

Resonant Enhancement of Neutrinoless Double-Electron Capture in 152Gd

ATOMIC MASSES 152Gd, 152Sm; measured cyclotron frequency ratio, TOF; deduced Q-value for double beta decay. Penning-trap mass ratio.

doi: 10.1103/PhysRevLett.106.052504
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2011EL04      Phys.Rev. C 83, 038501 (2011)

S.Eliseev, D.Nesterenko, K.Blaum, M.Block, C.Droese, F.Herfurth, E.Minaya-Ramirez, Yu.N.Novikov, L.Schweikhard, K.Zuber

Q values for neutrinoless double-electron capture in 96Ru, 162Er, and 168Yb

RADIOACTIVITY 96Ru, 162Er, 168Yb(2EC); measured Q values from Penning-trap mass ratios using SHIPTRAP. Absence of resonant enhancement of the capture rates, thus excluded as suitable candidates for search of neutrinoless double-electron capture.

ATOMIC MASSES 96Ru, 96Mo, 162Er, 162Dy, 168Yb, 168Er; measured cyclotron frequency ratios using SHIPTRAP Penning-trap; deduced Q(2EC) values.

doi: 10.1103/PhysRevC.83.038501
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2011EL05      Phys.Rev. C 84, 012501 (2011)

S.Eliseev, M.Goncharov, K.Blaum, M.Block, C.Droese, F.Herfurth, E.Minaya-Ramirez, Yu.N.Novikov, L.Schweikhard, V.M.Shabaev, I.I.Tupitsyn, K.Zuber, N.A.Zubova

Multiple-resonance phenomenon in neutrinoless double-electron capture

ATOMIC MASSES 156Dy, 156Gd; measured cyclotron frequency ratio, TOF; deduced Q-value for double electron capture. SHIPTRAP Penning-trap mass spectrometer. Comparison with AME-2003.

RADIOACTIVITY 156Dy(2EC); calculated electron wave functions, double-electron-hole binding energy; deduced resonant enhancement factor for the probability of neutrinoless double-electron capture. Estimated partial half-life. Dirac-Fock method, Fermi model.

doi: 10.1103/PhysRevC.84.012501
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2011EL08      Phys.Rev.Lett. 107, 152501 (2011)

S.Eliseev, C.Roux, K.Blaum, M.Block, C.Droese, F.Herfurth, M.Kretzschmar, M.I.Krivoruchenko, E.Minaya-Ramirez, Yu.N.Novikov, L.Schweikhard, V.M.Shabaev, F.Simkovic, I.I.Tupitsyn, K.Zuber, N.A.Zubova

Octupolar-Excitation Penning-Trap Mass Spectrometry for Q-Value Measurement of Double-Electron Capture in 164Er

ATOMIC MASSES 164Er, 164Dy; measured relative frequency deviations; deduced doublet mass ratio, Q-value. Penning trap.

doi: 10.1103/PhysRevLett.107.152501
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2011GA19      Phys.Rev. C 83, 054618 (2011)

J.M.Gates, Ch.E.Dullmann, M.Schadel, A.Yakushev, A.Turler, K.Eberhardt, J.V.Kratz, D.Ackermann, L.-L.Andersson, M.Block, W.Bruchle, J.Dvorak, H.G.Essel, P.A.Ellison, J.Even, U.Forsberg, J.Gellanki, A.Gorshkov, R.Graeger, K.E.Gregorich, W.Hartmann, R.-D.Herzberg, F.P.Hessberger, D.Hild, A.Hubner, E.Jager, J.Khuyagbaatar, B.Kindler, J.Krier, N.Kurz, S.Lahiri, D.Liebe, B.Lommel, M.Maiti, H.Nitsche, J.P.Omtvedt, E.Parr, D.Rudolph, J.Runke, H.Schaffner, B.Schausten, E.Schimpf, A.Semchenkov, J.Steiner, P.Thorle-Pospiech, J.Uusitalo, M.Wegrzecki, N.Wiehl

First superheavy element experiments at the GSI recoil separator TASCA: The production and decay of element 114 in the 244Pu(48Ca, 3-4n) reaction

NUCLEAR REACTIONS 206Pb(48Ca, 2n)252No, E=231.2 MeV; 207Pb(48Ca, 2n)253No, E=231.2 MeV; 208Pb(48Ca, 2n)254No, E=231.2 MeV; 244Pu(48Ca, 3n)289Fl, E=254.6, 259.4 MeV; 244Pu(48Ca, 4n)288Fl, E=254.6, 259.4 MeV; measured evaporation residue spectra, Eα, Iα, fission fragment spectra, Eγ, αγ-, α(particle)-coin, production cross sections. TASCA recoil separator at GSI. Comparison with previous measurements. RADIOACTIVITY 252,253,254No, 288,289Fl(α), (SF); measured Eα, half-lives, branching ratios for α and SF decay modes, (evaporation residues)α- and (evaporation residues)(fission fragments)-correlations, αγ-, γ(SF events)-coin. 248Fm, 281Ds, 284,285Cn, (α); measured Eα, EVR-α-α correlations, Eγ, half-lives. 277Hs(SF); measured total kinetic energy (TKE), half-life.

doi: 10.1103/PhysRevC.83.054618
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetA0910. Data from this article have been entered in the XUNDL database. For more information, click here.


2011GO23      Phys.Rev. C 84, 028501 (2011)

M.Goncharov, K.Blaum, M.Block, C.Droese, S.Eliseev, F.Herfurth, E.Minaya-Ramirez, Yu.N.Novikov, L.Schweikhard, K.Zuber

Probing the nuclides 102Pd, 106Cd, and 144Sm for resonant neutrinoless double-electron capture

ATOMIC MASSES 102Pd, 102Ru, 106Cd, 106Pd, 144Sm, 144Nd; measured cyclotron-frequency-ratios of singly-charged ion pairs using the Penning-trap mass spectrometer SHIPTRAP at GSI. Deduced Q values for double ϵ capture decay. Comparison with AME-2003.

RADIOACTIVITY 102Pd, 106Cd, 144Sm(2EC); measured Q values from mass measurement of parent-daughter pairs by Penning-trap method. Deduced parameters for neutrinoless double-electron capture measurements.

doi: 10.1103/PhysRevC.84.028501
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2011HA08      Phys.Rev.Lett. 106, 122501 (2011)

E.Haettner, D.Ackermann, G.Audi, K.Blaum, M.Block, S.Eliseev, T.Fleckenstein, F.Herfurth, F.P.Hessberger, S.Hofmann, J.Ketelaer, J.Ketter, H.-J.Kluge, G.Marx, M.Mazzocco, Yu.N.Novikov, W.R.Plass, S.Rahaman, T.Rauscher, D.Rodriguez, H.Schatz, C.Scheidenberger, L.Schweikhard, B.Sun, P.G.Thirolf, G.Vorobjev, M.Wang, C.Weber

Mass Measurements of Very Neutron-Deficient Mo and Tc Isotopes and Their Impact on rp Process Nucleosynthesis

ATOMIC MASSES 81Rb, 80,81,84Sr, 86Zr, 85Nb, 85,86,87Mo, 87Tc; measured frequency ratios; deduced masses, proton separation energies, possible limitations for rp astrophysical process. Comparison with AME03, Penning trap mass measurement.

doi: 10.1103/PhysRevLett.106.122501
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2011KE03      Phys.Rev. C 84, 014311 (2011)

J.Ketelaer, G.Audi, T.Beyer, K.Blaum, M.Block, R.B.Cakirli, R.F.Casten, C.Droese, M.Dworschak, K.Eberhardt, M.Eibach, F.Herfurth, E.Minaya-Ramirez, Sz.Nagy, D.Neidherr, W.Nortershauser, C.Smorra, M.Wang

Mass measurements on stable nuclides in the rare-earth region with the Penning-trap mass spectrometer TRIGA-TRAP

ATOMIC MASSES 153Eu, 152,154,155,156,157,158,160Gd, 175,176Lu, 176,177,178,179,180Hf; measured masses using TOF-ICR technique and TRIGA-TRAP Penning-trap mass spectrometer; deduced δVpn values; evaluated mass excesses.

doi: 10.1103/PhysRevC.84.014311
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2011KW02      J.Phys.:Conf.Ser. 312, 092035 (2011)

A.A.Kwiatkowski, B.R.Barquest, M.Block, G.Bollen, C.M.Campbell, R.Ferrer, D.L.Lincoln, D.J.Morrissey, G.K.Pang, M.Redshaw, R.Ringle, S.Schwarz, J.Savory

High precision Penning trap mass spectrometry of rare isotopes produced by projectile fragmentation

ATOMIC MASSES 63,64,65,66,67,68Fe, 64,65,66,67,68,69Co; measured mass, 2n separation energies using Penning trap radiofrequency. Compared with AME03, other data.

doi: 10.1088/1742-6596/312/9/092035
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2010BL03      Hyperfine Interactions 196, 225 (2010)

M.Block, D.Ackermann, K.Blaum, C.Droese, M.Dworschak, M.Eibach, S.Eliseev, T.Fleckenstein, E.Haettner, F.Herfurth, F.P.Hessberger, S.Hofmann, J.Ketelaer, J.Ketter, H.-J.Kluge, G.Marx, M.Mazzocco, Yu.N.Novikov, W.R.Plass, A.Popeko, S.Rahaman, D.Rodriguez, C.Scheidenberger, L.Schweikhard, P.G.Thirolf, G.K.Vorobyev, C.Weber

Penning trap mass measurements of transfermium elements with SHIPTRAP

ATOMIC MASSES 252,253,254No; measured cyclotron resonance curves; deduced masses.

doi: 10.1007/s10751-010-0161-z
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2010BL04      Nature(London) 463, 785 (2010)

M.Block, D.Ackermann, K.Blaum, C.Droese, M.Dworschak, S.Eliseev, T.Fleckenstein, E.Haettner, F.Herfurth, F.P.Hessberger, S.Hofmann, J.Ketelaer, J.Ketter, H.-J.Kluge, G.Marx, M.Mazzocco, Yu.N.Novikov, W.R.Plass, A.Popeko, S.Rahaman, D.Rodriguez, C.Scheidenberger, L.Schweikhard, P.G.Thirolf, G.K.Vorobyev, C.Weber

Direct mass measurements above uranium bridge the gap to the island of stability

ATOMIC MASSES 252,253,254No; measured masses by Penning-trap method at GSI, using 133Cs as standard.

doi: 10.1038/nature08774
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2010DU06      Phys.Rev.Lett. 104, 252701 (2010)

Ch.E.Dullmann, M.Schadel, A.Yakushev, A.Turler, K.Eberhardt, J.V.Kratz, D.Ackermann, L.-L.Andersson, M.Block, W.Bruchle, J.Dvorak, H.G.Essel, P.A.Ellison, J.Even, J.M.Gates, A.Gorshkov, R.Graeger, K.E.Gregorich, W.Hartmann, R.-D.Herzberg, F.P.Hessberger, D.Hild, A.Hubner, E.Jager, J.Khuyagbaatar, B.Kindler, J.Krier, N.Kurz, S.Lahiri, D.Liebe, B.Lommel, M.Maiti, H.Nitsche, J.P.Omtvedt, E.Parr, D.Rudolph, J.Runke, B.Schausten, E.Schimpf, A.Semchenkov, J.Steiner, P.Thorle-Pospiech, J.Uusitalo, M.Wegrzecki, N.Wiehl

Production and Decay of Element 114: High Cross Sections and the New Nucleus 277Hs

NUCLEAR REACTIONS 244Pu(48Ca, 3n)289Fl, 244Pu(48Ca, 4n)288Fl, E=259.4, 254.6 MeV; measured reaction products, Eα, Iα; deduced σ, α-decay chains, T1/2.

RADIOACTIVITY 288,289Fl, 285Cn(α), 281Ds(α), 284Cn, 281Ds, 277Hs(SF); measured reaction products, Eα, Iα; deduced α-decay chains, T1/2.

doi: 10.1103/PhysRevLett.104.252701
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2010DW01      Phys.Rev. C 81, 064312 (2010)

M.Dworschak, M.Block, D.Ackermann, G.Audi, K.Blaum, C.Droese, S.Eliseev, T.Fleckenstein, E.Haettner, F.Herfurth, F.P.Hessberger, S.Hofmann, J.Ketelaer, J.Ketter, H.-J.Kluge, G.Marx, M.Mazzocco, Yu.N.Novikov, W.R.Plass, A.Popeko, S.Rahaman, D.Rodriguez, C.Scheidenberger, L.Schweikhard, P.G.Thirolf, G.K.Vorobyev, M.Wang, C.Weber

Penning trap mass measurements on nobelium isotopes

ATOMIC MASSES 252,253,254No; measured cyclotron frequencies using SHIPTRAP Penning-trap system; deduced mean frequency ratios and mass excesses. Comparison with AME2003 and re-evaluation.

ATOMIC MASSES 232U, 236,238Pu, 240,241,242Cm, 244,245,246Cf, 248,249,250Fm, 252,253,254No, 256,257,258Rf, 260,261,262Sg, 264,265,266Hs, 268,269,270Ds; compiled and evaluated mass excesses.

NUCLEAR REACTIONS 206,207,208Pb(48Ca, 2n)252No/253No/254No, E=4.55 MeV/nucleon; measured production σ.

doi: 10.1103/PhysRevC.81.064312
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2010FE01      Phys.Rev. C 81, 044318 (2010)

R.Ferrer, M.Block, C.Bachelet, B.R.Barquest, G.Bollen, C.M.Campbell, M.Facina, C.M.Folden III, C.Guenaut, A.A.Kwiatkowski, D.L.Lincoln, D.J.Morrissey, G.K.Pang, A.M.Prinke, R.Ringle, J.Savory, P.Schury, S.Schwarz

Penning trap mass spectrometry of neutron-rich Fe and Co isotopes around N=40 with the LEBIT mass spectrometer

ATOMIC MASSES 63,64,65,65m,66Fe, 64,65,66,67,67mCo; measured cyclotron resonance frequencies and mass excesses using LEBIT Penning-trap mass spectrometer. Comparison with AME-2003 evaluation. 61,63,65,67Fe; systematics of low-lying levels. Z=24-31, N=35-44; systematics of two-neutron separation energies.

doi: 10.1103/PhysRevC.81.044318
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2010KE09      Eur.Phys.J. D 58, 47 (2010)

J.Ketelaer, T.Beyer, K.Blaum, M.Block, K.Eberhardt, F.Herfurth, C.Smorra, Sz.Nagy

Accuracy studies with carbon clusters at the Penning trap mass spectrometer TRIGA-TRAP

ATOMIC MASSES 197Au; measured cyclotron frequency ratios using various sizes of carbon clusters; deduced mass.

doi: 10.1140/epjd/e2010-00092-9
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2009KE07      Eur.Phys.J. A 42, 311 (2009)

J.Ketelaer, K.Blaum, M.Block, K.Eberhardt, M.Eibach, R.Ferrer, S.George, F.Herfurth, J.Ketter, Sz.Nagy, J.Repp, L.Schweikhard, C.Smorra, S.Sturm, S.Ulmer

Recent developments in ion detection techniques for Penning trap mass spectrometry at TRIGA-TRAP

doi: 10.1140/epja/i2008-10711-6
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2009KW02      Phys.Rev. C 80, 051302 (2009)

A.A.Kwiatkowski, B.R.Barquest, G.Bollen, C.M.Campbell, D.L.Lincoln, D.J.Morrissey, G.K.Pang, A.M.Prinke, J.Savory, S.Schwarz, C.M.Folden III, D.Melconian, S.K.L.Sjue, M.Block

Precision test of the isobaric multiplet mass equation for the A=32, T=2 quintet

ATOMIC MASSES 32,33Si, 32S, 31,34P; measured masses using LEBIT Penning-trap spectrometer; deduced mass excesses. Discussed validity of quadratic form of isobaric multiplet mass equation (IMME).

doi: 10.1103/PhysRevC.80.051302
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2009RI12      Phys.Rev. C 80, 064321 (2009)

R.Ringle, C.Bachelet, M.Block, G.Bollen, M.Facina, C.M.Folden III, C.Guenaut, A.A.Kwiatkowski, D.J.Morrissey, G.K.Pang, A.M.Prinke, J.Savory, P.Schury, S.Schwarz, C.S.Sumithrarachchi

High-precision Penning trap mass measurements of neutron-rich sulfur isotopes at the N=28 shell closure

ATOMIC MASSES 40,41,42,43,44S; measured precise mass excesses using LEBIT Penning trap mass spectrometer. Comparison with other recent mass measurements. Systematics of S(2n) values for N=24-30, Z=15-18 nuclides.

doi: 10.1103/PhysRevC.80.064321
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2009SA12      Phys.Rev.Lett. 102, 132501 (2009)

J.Savory, P.Schury, C.Bachelet, M.Block, G.Bollen, M.Facina, C.M.Folden III, C.Guenaut, E.Kwan, A.A.Kwiatkowski, D.J.Morrissey, G.K.Pang, A.Prinke, R.Ringle, H.Schatz, S.Schwarz, C.S.Sumithrarachchi

rp Process and Masses of N ∼ Z ∼ 34 Nuclides

ATOMIC MASSES 68,70Se, 70,71Br; measured frequencies using penning trap; deduced masses. 70,71Kr predicted masses.

doi: 10.1103/PhysRevLett.102.132501
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2009SC29      Eur.Phys.J. A 42, 323 (2009)

S.Schwarz, M.Block, G.Bollen, C.M.Campbell, M.Facina, R.Ferrer, C.M.Folden III, A.A.Kwiatkowski, D.J.Morrissey, G.K.Pang, A.M.Prinke, R.J.Ringle, J.Savory, P.H.Schury

Precision Penning trap mass measurements of rare isotopes produced by projectile fragmentation

ATOMIC MASSES 32Si, 32P, 32S, 32Cl, 32Ar; analyzed masses from Penning trap measurements. Comparison with Isobaric Multiplet Mass Equation calculations.

doi: 10.1140/epja/i2009-10808-4
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2008BL05      Phys.Rev.Lett. 100, 132501 (2008); Erratum Phys.Rev.Lett. 101, 059901 (2008)

M.Block, C.Bachelet, G.Bollen, M.Facina, C.M.Folden III, C.Guenaut, A.A.Kwiatkowski, D.J.Morrissey, G.K.Pang, A.Prinke, R.Ringle, J.Savory, P.Schury, S.Schwarz

Discovery of a Nuclear Isomer in 65Fe with Penning Trap Mass Spectrometry

ATOMIC MASSES 63,64,65Fe, 64,65,66Co; measured and evaluated masses using Penning trap mass spectrometer, isotopes produced by projectile fragmentation with LEBIT at NSCL. 65mFe; deduced level energy, T1/2 for isomeric state.

doi: 10.1103/PhysRevLett.100.132501
Citations: PlumX Metrics

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2008RA03      Phys.Rev.Lett. 100, 012501 (2008)

C.Rauth, D.Ackermann, K.Blaum, M.Block, A.Chaudhuri, Z.Di, S.Eliseev, R.Ferrer, D.Habs, F.Herfurth, F.P.Hessberger, S.Hofmann, H.-J.Kluge, G.Maero, A.Martin, G.Marx, M.Mukherjee, J.B.Neumayr, W.R.Plass, S.Rahaman, D.Rodriguez, C.Scheidenberger, L.Schweikhard, P.G.Thirolf, G.Vorobjev, C.Weber

First Penning Trap Mass Measurements beyond the Proton Drip Line

ATOMIC MASSES 144,145,146,147Ho, 147,148Tm; measured masses using the SHIPTRAP penning trap mass spectrometer.

doi: 10.1103/PhysRevLett.100.012501
Citations: PlumX Metrics


2008WE10      Phys.Rev. C 78, 054310 (2008)

C.Weber, V.-V.Elomaa, R.Ferrer, C.Frohlich, D.Ackermann, J.Aysto, G.Audi, L.Batist, K.Blaum, M.Block, A.Chaudhuri, M.Dworschak, S.Eliseev, T.Eronen, U.Hager, J.Hakala, F.Herfurth, F.P.Hessberger, S.Hofmann, A.Jokinen, A.Kankainen, H.-J.Kluge, K.Langanke, A.Martin, G.Martinez-Pinedo, M.Mazzocco, I.D.Moore, J.B.Neumayr, Yu.N.Novikov, H.Penttila, W.R.Plass, A.V.Popov, S.Rahaman, T.Rauscher, C.Rauth, J.Rissanen, D.Rodriguez, A.Saastamoinen, C.Scheidenberger, L.Schweikhard, D.M.Seliverstov, T.Sonoda, F.-K.Thielemann, P.G.Thirolf, G.K.Vorobjev

Mass measurements in the vicinity of the r p-process and the ν p-process paths with the Penning trap facilities JYFLTRAP and SHIPTRAP

ATOMIC MASSES 84Y, 87Zr, 88,89Mo, 88,89,90,91,92Tc, 90,91,92,93Ru, 92,93,94,95Rh, 94,95,95m,96Pd; measured masses. Comparison with evaluated data.

doi: 10.1103/PhysRevC.78.054310
Citations: PlumX Metrics


2007BA58      Eur.Phys.J. D 45, 99 (2007)

H.Backe, P.Kunz, W.Lauth, A.Dretzke, R.Horn, T.Kolb, M.Laatiaoui, M.Sewtz, D.Ackermann, M.Block, F.Herfurth, F.P.Hessberger, S.Hofmann, R.Mann

Towards optical spectroscopy of the element nobelium (Z = 102) in a buffer gas cell

doi: 10.1140/epjd/e2007-00198-1
Citations: PlumX Metrics


2007BL16      Eur.Phys.J. D 45, 39 (2007)

M.Block, D.Ackermann, K.Blaum, A.Chaudhuri, Z.Di, S.Eliseev, R.Ferrer, D.Habs, F.Herfurth, F.P.Hessberger, S.Hofmann, H.-J.Kluge, G.Maero, A.Martin, G.Marx, M.Mazzocco, M.Mukherjee, J.B.Neumayr, W.R.Plass, W.Quint, S.Rahaman, C.Rauth, D.Rodriguez, C.Scheidenberger, L.Schweikhard, P.G.Thirolf, G.Vorobjev, C.Weber

Towards direct mass measurements of nobelium at SHIPTRAP

doi: 10.1140/epjd/e2007-00189-2
Citations: PlumX Metrics


2007BO50      Eur.Phys.J. Special Topics 150, 337 (2007)

G.Bollen, C.Bachelet, M.Block, D.A.Davies, M.Facina, C.M.Folden, C.Guenaut, J.Huikari, E.Kwan, A.Kwiatowski, D.J.Morrissey, G.Pang, A.Prinke, R.Ringle, J.Savory, P.Schury, S.Schwarz, C.Sumithrarachchi, T.Sun

Penning trap mass measurements of rare isotopes produced by projectile fragmentation with LEBIT at NSCL

ATOMIC MASSES 80As, 81Se; measured masses a penning trap mass spectrometer.

doi: 10.1140/epjst/e2007-00340-3
Citations: PlumX Metrics


2007CH65      Eur.Phys.J. D 45, 47 (2007)

A.Chaudhuri, M.Block, S.Eliseev, R.Ferrer, F.Herfurth, A.Martin, G.Marx, M.Mukherjee, C.Rauth, L.Schweikhard, G.Vorobjev

Carbon-cluster mass calibration at SHIPTRAP

doi: 10.1140/epjd/e2007-00001-5
Citations: PlumX Metrics


2007MA92      Eur.Phys.J. A 34, 341 (2007)

A.Martin, D.Ackermann, G.Audi, K.Blaum, M.Block, A.Chaudhuri, Z.Di, S.Eliseev, R.Ferrer, D.Habs, F.Herfurth, F.P.Hessberger, S.Hofmann, H.-J.Kluge, M.Mazzocco, M.Mukherjee, J.B.Neumayr, Yu.Novikov, W.Plass, S.Rahaman, C.Rauth, D.Rodriguez, C.Scheidenberger, L.Schweikhard, P.G.Thirolf, G.Vorobjev, C.Weber

Mass measurements of neutron-deficient radionuclides near the end-point of the rp-process with SHIPTRAP

ATOMIC MASSES 99,101,103Ag, 101,102,103,104Cd, 102,103,104,105In, 105,106Sn, 107,109,111Sb, 109,110,111,112Te, 111,112,113I, 113Xe; measured and evaluated masses using the SHIPTRAP Penning trap mass spectrometer. 104Sn, 105Sb, 108Te, 109I, 112Xe, 113Cs; evaluated masses.

NUCLEAR STRUCTURE 102,103,104,105In, 104,105,106Sn, 105,106,107Sb, 109I; deduced proton separation energies from mass measurements using the SHIPTRAP facility.

doi: 10.1140/epja/i2007-10520-5
Citations: PlumX Metrics


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Note: The following list of authors and aliases matches the search parameter M.Block: , M.M.BLOCK