NSR Query Results

Output year order : Descending
Format : Normal

NSR database version of April 26, 2024.

Search: Author = S.AAberg

Found 11 matches.

Back to query form

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
Citations: PlumX Metrics

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
Citations: PlumX Metrics

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
Citations: PlumX Metrics

2020RU03      Phys.Rev. C 102, 014313 (2020)

D.Rudolph, I.Ragnarsson, S.AAberg, C.Andreoiu, M.P.Carpenter, R.M.Clark, J.Ekman, C.Fahlander, R.V.F.Janssens, F.G.Kondev, T.Lauritsen, D.G.Sarantites, D.Seweryniak, C.E.Svensson

Onset of high-spin rotational bands in the N=Z nucleus ⁶²Ga

NUCLEAR REACTIONS ⁴⁰Ca(²⁸Si, npα), E=122 MeV; measured Eγ, Iγ, (particle)γ- and γγ-coin, γγ(θ)(DCO) using the Gammasphere array and the 4π Microball system for charged particle detection at the ANL-ATLAS facility. ⁶²Ga; deduced high-spin levels, J, π, multipolarities, band structures, alignments, and configurations; calculated energy surface contours in (ϵ₂, γ) plane. Comparison with cranked Nilsson-Strutinsky (CNS) calculations.

doi: 10.1103/PhysRevC.102.014313
Citations: PlumX Metrics
Data from this article have been entered in the XUNDL database. For more information, click here.

2019WA27      Phys.Rev. C 100, 034301 (2019)

D.E.Ward, B.G.Carlsson, P.Moller, S.AAberg

Global microscopic calculations of odd-odd nuclei

NUCLEAR STRUCTURE Z=8-100, N=8-156; calculated ground-state Jπ for odd-A nuclei from the lowest-energy proton or neutron quasiparticle. ^158,160Tb, ^164,166Ho, ^168,170Tm, ^174,176Lu, ¹⁸²Ta, ^186,188Re, ^234,236Pa, ²³⁸Np, ^240,242,244Cm, ²⁵⁰Bk; calculated excitation energies of the 2-qp bandheads, bandhead splittings in rare-earth nuclei and actinides using Folded-Yukawa quasiparticles-plus-rotor model with three different residual interactions. ⁵⁰Sc, ⁹⁰Y, ^208,210Bi; calculated low-lying multiplets in the spherical nuclei. ^174,176Lu, ^180,182Ta; calculated low-lying rotational bands and K=0 bands. ^{248,250,252,254,256}Es, ²⁵⁶Md; predicted ground-state spins of superheavy nuclei. Z=101-119, N=138-182; calculated Q(α) values for odd-odd superheavy nuclei. Macroscopic-microscopic finite-range droplet model combined with particle-rotor coupling model order to describe low-energy spectra of odd-odd nuclei, using different interactions. Comparison with experimental data.

doi: 10.1103/PhysRevC.100.034301
Citations: PlumX Metrics

2018SE18      Phys.Rev. C 98, 044319 (2018)

A.P.Severyukhin, S.AAberg, N.N.Arsenyev, R.G.Nazmitdinov

Damped transient response of the giant dipole resonance in the lead region

NUCLEAR STRUCTURE ²⁰⁶Hg, ^204,206,208Pb, ²¹⁰Po; analyzed strength distributions of 1- states in the region of isovector giant-dipole resonance (IVGDR) and energy interval of 9.5-18.5 MeV using quasi-random phase approximation (QRPA) based on Skyrme mean field and SLy4 interaction, with the volume pairing interaction treated in the BCS approximation. Comparison of centroid energies and spreading widths from microscopic coupling of one- and two-phonon states with those from random matrix approach to this coupling, and with experimental data.

doi: 10.1103/PhysRevC.98.044319
Citations: PlumX Metrics

2017SR01      Phys.Rev. C 95, 011303 (2017)

P.C.Srivastava, S.AAberg, I.Ragnarsson

Triaxial rotation-axis flip triggered by an isoscalar np pair

NUCLEAR STRUCTURE ⁶⁴Ge, ⁶⁶As; calculated total-energy surfaces in (ϵ₂, γ) plane, levels, J, π of ground-state band (T=0) of ⁶⁴Ge and 9+ (T=1) band in ⁶⁶As, intrinsic and spectroscopic quadrupole moments, B(E2). Cranked Nilsson-Strutinsky (CNS) model. Comparison with experimental data.

doi: 10.1103/PhysRevC.95.011303
Citations: PlumX Metrics

2017WA08      Phys.Rev. C 95, 024618 (2017)

D.E.Ward, B.G.Carlsson, T.Dossing, P.Moller, J.Randrup, S.AAberg

Nuclear shape evolution based on microscopic level densities

NUCLEAR REACTIONS ²²⁶Th, ^234,236U, ²⁴⁰Pu(γ, F), (n, F), E(n)=thermal; calculated yield of fragments as function of proton number and angular momentum and excitation energy using parameter-free microscopic level densities obtained with the Metropolis-walk method. Comparison with experimental data.

NUCLEAR STRUCTURE ²³⁶U; calculated microscopic level density as a function of angular momentum and excitation energy, potential-energy curves and mass asymmetry versus elongation using Metropolis walk, combinatorial method.

doi: 10.1103/PhysRevC.95.024618
Citations: PlumX Metrics

2015WA20      Phys.Rev. C 92, 014314 (2015)

D.E.Ward, B.G.Carlsson, S.AAberg

α-decay spectra of odd nuclei using the effective Skyrme interaction

RADIOACTIVITY ¹⁴⁵Pm, ¹⁴⁷Sm, ¹⁴⁷Eu, ^149,149mTb, ^{187,189,191,193,195,197,199,201,201m,203,205,207,209,211,213,215,217}Po, ^{203,205,207,209,211,213}At, ^207,209,211Rn, ^{207,209,211,213}Fr, ²¹³Ra(α); analyzed experimental data for partial half-lives and reduced widths, compared with calculated microscopic reduced widths using SLy4 and surface pairing. ^{279,281,283,285,287,289,291,293}Bh, ^{281,283,285,287,289,291,293}Hs, ^{281,283,285,287,289,291,293,295}Mt, ^{283,285,287,289,291,293,295}Ds, ^{283,285,287,289,291,293,295,297}Rg, ^{285,287,289,291,293,295,297,299}Cn, ^{285,287,289,291,293,295,297,299}Nh, ^{287,289,291,293,295,297,299,301}Fl, ^{287,289,291,293,295,297,299,301}Mc, ^{289,291,293,295,297,299,301,303}Lv, ^{289,291,293,295,297,299,301,303}Ts, ^{291,293,295,297,299,301,303,305}Og, ^{291,293,295,297,299,301,303,305}119, ^{293,295,297,299,301,303,305,307}120, ^{280,282,284,286,288,290,292,294}Hs, ^{282,284,286,288,290,292,294,296}Ds, ^{284,286,288,290,292,294,296,298}Cn, ^{286,288,290,292,294,296,298,300}Fl, ^{288,290,292,294,296,298,300,302}Lv, ^{290,292,294,296,298,300,302,304}Og, ^{292,294,296,298,300,302,304,306}120(α); calculated Q(α) values, half-lives and reduced widths for superheavy odd-A and even-even nuclei using axially deformed Skyrme-HFB. R-matrix-type microscopic formalism for the calculation of the decay rate, using HFB wave functions obtained with SLy4 Skyrme effective interaction.

NUCLEAR STRUCTURE ²⁰⁸Pb, ²⁹⁸Fl; calculated HF single-particle energies for ²⁰⁸Pb and Nilsson diagrams for neutron and proton levels using SLy4.

doi: 10.1103/PhysRevC.92.014314
Citations: PlumX Metrics

2014SH03      Phys.Rev. C 89, 014329 (2014)

A.Shukla, S.AAberg

Deformed bubble nuclei in the light-mass region

NUCLEAR STRUCTURE ²⁴Ne, ³²Si, ³²Ar; investigated possibility for existence of deformed bubble nuclei. ^{24,26,28,30,32,34}Si, ²⁴Ne, ³²Ar, ³⁶S, ³⁶Ca; calculated proton depletion fractions as function of deformation for Z=14 nuclei. ²⁴Ne, ²⁶Mg, ²⁸Si, ³⁰S, ³²Ar, ^34,36Ca; calculated neutron depletion fractions as function of deformation for N=14 nuclei. ³²Si; calculated neutron and proton density contour plots. ²⁴Ne, ^32,34Si, ³²Ar; calculated binding energy per nucleon, neutron, rms charge and rms matter radii. Relativistic mean field (RMF) model. Comparison with experimental data.

doi: 10.1103/PhysRevC.89.014329
Citations: PlumX Metrics

2013WA30      Phys.Rev. C 88, 064316 (2013)

D.E.Ward, B.G.Carlsson, S.AAberg

α-decay calculations of heavy nuclei using an effective Skyrme interaction

NUCLEAR STRUCTURE ²⁰⁸Pb; calculated neutron and proton densities by solving the HFB equations using a spherical oscillator basis.

RADIOACTIVITY ²¹⁰Pb, ^210,212Po(α); calculated decay widths for different sizes of the oscillator basis, and three different Skyrme forces, effect on decay rate with the Lipkin-Nogami (LN) procedure, HFB+LN and HFB approaches density dependence of pairing forces. ^{194,196,198,200,202,204,206,208,210,212,214,216,218}Po, ^{202,204,206,208,210,212,214,216,218}Rn, ^{206,208,210,212,214,216,218}Ra, ¹⁴⁴Nd, ¹⁴⁶Sm, ¹⁴⁸Gd, ¹⁵⁰Dy, ^152,154Er, ^154,156Yb, ^156,158Hf, ^158,160W, ¹⁶²Os, ^{294,296,298,300}Fl, ^{294,296,298,300}Fl, ^{306,308,310,312}126(α); calculated α decay widths, half-lives of Fl and Z=126 isotopes. Nuclear ground states calculated with the Hartree-Fock-Bogoliubov (HFB) method with Skyrme interaction. Microscopic α-decay formation amplitudes calculated from HFB wave functions, and α widths with R-matrix formalism. Comparison with experimental data.

doi: 10.1103/PhysRevC.88.064316
Citations: PlumX Metrics