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NSR database version of April 26, 2024.

Search: Author = M.Albertsson

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2024DO02      Phys.Rev. C 109, 034615 (2024)

T.Dossing, S.AAberg, M.Albertsson, B.G.Carlsson, J.Randrup

Angular momentum in fission fragments

doi: 10.1103/PhysRevC.109.034615
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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, T_1/2, 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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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 ^{290,288,286,284}Fl(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, T_1/2, branching ratios, hindrance factor. ²⁸²Cn; deduced levels, J, π, T_1/2 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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2021AL03      Phys.Rev. C 103, 014609 (2021)

M.Albertsson, B.G.Carlsson, T.Dossing, P.Moller, J.Randrup, S.Aberg

Correlation studies of fission-fragment neutron multiplicities

NUCLEAR REACTIONS ²³⁵U(n, F), E=0, 5.55 MeV; calculated total fragment kinetic energy (TKE) and distribution of TKE versus heavy-fragment mass number, number of scission events in log scale versus fission fragment mass number and total kinetic energy (TKE), probability distribution for the heavy-fragment share of intrinsic energy, average of the light and heavy-fragment intrinsic energies, average fragment distortion energies and deformations at scission versus TKE, average multiplicity of neutrons evaporated from the light or heavy fragment as function of TKE. Nuclear shape evolution from the ground-state shape to scission obtained from METROPOLIS walk method on the five-dimensional potential-energy surfaces, calculated with the macroscopic-microscopic method for the three-quadratic-surface (3QS) parametrization.

doi: 10.1103/PhysRevC.103.014609
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2021AL31      Phys.Rev. C 104, 064616 (2021)

M.Albertsson, B.G.Carlsson, T.Dossing, P.Moller, J.Randrup, S.Aberg

Super-short fission mode in fermium isotopes

RADIOACTIVITY ^{256,258,260,262}Fm(SF); calculated potential energy along the paths for the standard and the super-short fission modes, as function of quadrupole moment. ²⁶⁰Fm(SF); calculated contour plots of the number of fission in the A-TKE plane based on 105 spontaneous or thermal fission events. ^{254,256,258,260,262,264,266,268}Fm(SF); calculated contour plot of fraction of fissions via the super-short mode, with typical scission shapes for the two modes. ^{254,256,258,260}Fm(SF); calculated primary fragment mass yields for spontaneous and thermal fission, total kinetic-energy (TKE) distributions. ^{254,256,258,260,262,264,266,268}Fm, ^259,260Md(SF); calculated TKE and average total neutron multiplicity versus the neutron number of the initial nucleus. Metropolis method for the super-short fission mode to simulate the strongly damped fission dynamics driven by shape- and energy-dependent level densities, and analyzing scission configurations. Comparison with experimental data.

doi: 10.1103/PhysRevC.104.064616
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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, T_1/2, J, π. Comparison with theoretical calculations. The gas-filled separator TASCA at the GSI.

doi: 10.1103/PhysRevLett.126.032503
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2020AL01      Eur.Phys.J. A 56, 46 (2020)

M.Albertsson, B.G.Carlsson, T.Dossing, P.Moller, J.Randrup, S.Aberg

Calculated fission-fragment mass yields and average total kinetic energies of heavy and superheavy nuclei

doi: 10.1140/epja/s10050-020-00036-9
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