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NSR database version of May 24, 2024.

Search: Author = S.V.Szwec

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2021SZ03      Phys.Rev. C 104, 054308 (2021)

S.V.Szwec, D.K.Sharp, B.P.Kay, S.J.Freeman, J.P.Schiffer, P.Adsley, C.Binnersley, N.de Sereville, T.Faestermann, R.F.Garcia Ruiz, F.Hammache, R.Hertenberger, A.Meyer, C.Portail, I.Stefan, A.Vernon, S.Wilkins, H.-F.Wirth

Neutron occupancies and single-particle energies across the stable tin isotopes

NUCLEAR REACTIONS 112,114,116,118,120,122,124Sn(p, d)111Sn/113Sn/115Sn/117Sn/119Sn/121Sn/123Sn, E=21 MeV; 112,114,116,118,120,122,124Sn(3He, α)111Sn/113Sn/115Sn/117Sn/119Sn/121Sn/123Sn, E=36 MeV; 112,114,116,118,120,122,124Sn(d, p)113Sn/115Sn/117Sn/119Sn/121Sn/123Sn/125Sn, E=15 MeV; 112,114,116,118,120,122,124Sn(α, 3He)113Sn/115Sn/117Sn/119Sn/121Sn/123Sn/125Sn, E=41 MeV; measured E(d), I(d), Eα, Iα, E(p), I(p), E(3He), I(3He), differential σ(θ) and analyzed by DWBA calculations; analyzed proton, deuteron, 3He and α spectra using Munich Q3D spectrometer at MLL accelerator facility for (p, d) and (d, p) reactions, and Enge split-pole spectrometer for (3He, α), (α, 3He) reactions at the IJClab of Tandem-Alto facility of Laboratoire de Physique. 112,114,116,118,120,122,124Sn; deduced levels, J, π, L-transfers, spectroscopic factors, summed neutron strengths, fractional occupancies and effective single-particle energies for 2s1/2, 1d3/2, 1d5/2, 0g7/2, and 0h11/2 neutron orbitals. Detailed cross sections at different angles, particle spectra, absolute cross sections and spectroscopic factors are given in the Supplemental Material of the paper.

doi: 10.1103/PhysRevC.104.054308
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO2550.


2020TA03      Phys.Rev.Lett. 124, 062502 (2020)

T.L.Tang, B.P.Kay, C.R.Hoffman, J.P.Schiffer, D.K.Sharp, L.P.Gaffney, S.J.Freeman, M.R.Mumpower, A.Arokiaraj, E.F.Baader, P.A.Butler, W.N.Catford, G.de Angelis, F.Flavigny, M.D.Gott, E.T.Gregor, J.Konki, M.Labiche, I.H.Lazarus, P.T.MacGregor, I.Martel, R.D.Page, Zs.Podolyak, O.Poleshchuk, R.Raabe, F.Recchia, J.F.Smith, S.V.Szwec, J.Yang

First Exploration of Neutron Shell Structure below Lead and beyond N=126

NUCLEAR REACTIONS 2H(206Hg, p), E=7.38 MeV/nucleon; measured reaction products, Ep, Ip. 207Hg; deduced excitation energies, J, π, σ(θ). Comparison with theoretical calculations.

doi: 10.1103/physrevlett.124.062502
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Data from this article have been entered in the XUNDL database. For more information, click here.


2019GI19      Nucl.Instrum.Methods Phys.Res. A923, 139 (2019)

M.M.Giles, D.M.Cullen, L.Barber, B.S.Nara Singh, M.J.Taylor, A.J.Smith, A.McFarlane, C.Read, T.Grahn, H.Badran, P.T.Greenlees, R.Julin, J.Pakarinen, J.Partanen, P.Rahkila, P.Ruotsalainen, M.Sandzelius, J.Saren, J.Sorri, S.V.Szwec, J.Uusitalo, J.Heery, E.Parr, P.Papadakis, R.D.Herzberg

TPEN: A Triple-foil differential Plunger for lifetime measurements of excited states in Exotic Nuclei

NUCLEAR REACTIONS 24Mg(136Xe, 4n), E=590 MeV; measured reaction products, Eγ, Iγ; deduced γ-ray energies and relative intensities, 4+ state T1/2. Comparison with available data. The Recoil Distance Doppler-Shift method (RDDS), the Differential Decay Curve Method (DDCM) analysis technique within the RDDS method. A Triple-foil differential Plunger for Exotic Nuclei (TPEN), the K130 cyclotron, the Accelerator Laboratory of the University of Jyvaskyla, Finland.

doi: 10.1016/j.nima.2019.01.089
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Data from this article have been entered in the XUNDL database. For more information, click here.


2019LE15      Phys.Lett. B 798, 134998 (2019)

M.C.Lewis, D.T.Joss, B.Saygi, R.D.Page, D.M.Cullen, L.Barber, M.M.Giles, J.Simpson, M.A.M.Al-Aqeel, H.Badran, T.Braunroth, A.D.Briscoe, T.Calverley, A.Dewald, M.Doncel, T.Grahn, P.T.Greenlees, C.Henrich, A.Herzan, R.-D.Herzberg, E.Higgins, J.Hilton, S.Ilieva, R.Julin, S.Juutinen, J.Keatings, T.Kroll, M.Labiche, K.Mashtakov, B.S.Nara Singh, E.Parr, J.Partanen, E.S.Paul, P.Rahkila, M.Sandzelius, J.Saren, C.Scholey, M.Siciliano, P.Spagnoletti, S.Stolze, S.V.Szwec, M.J.Taylor, J.Uusitalo

Lifetime measurements of excited states in 163W and the implications for the anomalous B(E2) ratios in transitional nuclei

NUCLEAR REACTIONS 106Cd(60Ni, X)163W, E=270 MeV; measured reaction products, Eγ, Iγ; deduced γ-ray energies, J, π, B(E2).

doi: 10.1016/j.physletb.2019.134998
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Data from this article have been entered in the XUNDL database. For more information, click here.


2017FR08      Phys.Rev. C 96, 054325 (2017)

S.J.Freeman, D.K.Sharp, S.A.McAllister, B.P.Kay, C.M.Deibel, T.Faestermann, R.Hertenberger, A.J.Mitchell, J.P.Schiffer, S.V.Szwec, J.S.Thomas, H.-F.Wirth

Experimental study of the rearrangements of valence protons and neutrons amongst single-particle orbits during double-β decay in 100Mo

NUCLEAR REACTIONS 98,100Mo, 100,102Ru(d, p), (p, d), (3He, α), (3He, d), E(d)=15 MeV, E(p)=24 MeV, E(3He)=36 MeV; measured light-ion particle spectra, cross sections, angular distributions using Q3D magnetic spectrometer at Munich MP tandem accelerator facility. Enriched targets. 97,99,101Mo, 99,101,103Ru, 99,101Tc, 101,103Rh; deduced levels, L-transfers, J, π, spectroscopic factors, cross section ratios. DWBA analysis of σ(θ) data. 98,100Mo, 100,102Ru; deduced neutron occupancies from neutron-removing reactions, and proton vacancies from (3He, d) reaction. 100Mo, 100Ru; deduced neutron occupancy and proton vacancy for the valence orbits, and compared to predictions from interacting boson model (IBM), and two different Woods-Saxon calculations. See Supplemental Material (reference 46 in the paper) for details of experimental cross section data and spectroscopic factors for individual states in final nuclei.

RADIOACTIVITY 100Mo(2β-); deduced detailed quantitative assessment of rearrangements of protons and neutrons amongst the valence single-particle orbitals during double-β decay process, with relevance to nuclear matrix element for 0νββ and 2νββ decay modes.

doi: 10.1103/PhysRevC.96.054325
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO2445. Data from this article have been entered in the XUNDL database. For more information, click here.


2016EN04      Phys.Rev. C 93, 064312 (2016)

J.P.Entwisle, B.P.Kay, A.Tamii, S.Adachi, N.Aoi, J.A.Clark, S.J.Freeman, H.Fujita, Y.Fujita, T.Furuno, T.Hashimoto, C.R.Hoffman, E.Ideguchi, T.Ito, C.Iwamoto, T.Kawabata, B.Liu, M.Miura, H.J.Ong, J.P.Schiffer, D.K.Sharp, G.Susoy, T.Suzuki, S.V.Szwec, M.Takaki, M.Tsumura, T.Yamamoto

Change of nuclear configurations in the neutrinoless double-β decay of 130Te → 130Xe and 136Xe → 136Ba

NUCLEAR REACTIONS 128,130Te, 130,132,134,136Xe, 136,138Ba(d, 3He), E=101 MeV; measured Ed, Id, σ(θ) using Grand Raiden (GR) spectrometer at RCNP-Osaka cyclotron facility. 127,129Sb, 129,131,133,135I, 135,137Cs; deduced levels, L-transfers, spectroscopic factors. DWBA and optical model analysis. 128,130Te, 130,132,134,136Xe, 136,138Ba; deduced ground state proton occupancies. Comparison with shell-model and interacting boson-model calculations.

RADIOACTIVITY 130Te, 136Xe(2β-); deduced change in the configuration of valence protons between the initial and final states in the 0νββ decay mode from measurements of the cross sections in (d, 3He) reaction, nuclear matrix elements.

doi: 10.1103/PhysRevC.93.064312
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Data from this article have been entered in the XUNDL database. For more information, click here.


2016SZ03      Phys.Rev. C 94, 054314 (2016)

S.V.Szwec, B.P.Kay, T.E.Cocolios, J.P.Entwisle, S.J.Freeman, L.P.Gaffney, V.Guimaraes, F.Hammache, P.P.McKee, E.Parr, C.Portail, J.P.Schiffer, N.de Sereville, D.K.Sharp, J.F.Smith, I.Stefan

Rearrangement of valence neutrons in the neutrinoless double-β decay of 136Xe

NUCLEAR REACTIONS 134Ba(d, p), E=15 MeV; 134Ba(α, 3He), E=40.1 MeV; 136Ba(p, d), E=23 MeV; 134Ba(3He, α), E=32.0 MeV; measured outgoing proton, deuteron, 3He and α spectra, σ(θ) using an Enge split-pole spectrometer at the ALTO Tandem accelerator at IPN-Orsay. DWBA analysis using PTOLEMY code. 135Ba; deduced levels, J, π. 136Xe, 134,136Ba; deduced ground-state neutron occupancies. Comparisons with theoretical calculations using various nuclear-structure models. Relevance to initial and final state in the 0νββ decay mode of 136Xe.

doi: 10.1103/PhysRevC.94.054314
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO2367. Data from this article have been entered in the XUNDL database. For more information, click here.


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