NSR Query Results
Output year order : Descending NSR database version of April 27, 2024. Search: Author = U.Van Severen Found 24 matches. 2001GO06 Nucl.Phys. A683, 108 (2001) A.Gorgen, N.Nenoff, H.Hubel, G.Baldsiefen, J.A.Becker, A.P.Byrne, S.Chmel, R.M.Clark, M.A.Deleplanque, R.M.Diamond, P.Fallon, K.Hauschild, I.M.Hibbert, W.Korten, R.Krucken, I.Y.Lee, A.O.Macchiavelli, E.S.Paul, U.J.van Severen, F.S.Stephens, K.Vetter, R.Wadsworth, A.N.Wilson, J.N.Wilson Magnetic Rotation in 197Pb and 198Pb NUCLEAR REACTIONS 186W(18O, 6n), (18O, 7n), E=104, 110, 115 MeV; measured Eγ, Iγ, γγ-coin, linear polarization. 197,198Pb deduced high-spin levels, J, π, B(M1)/B(E2), magnetic dipole bands, magnetic rotation. Level systematics in neighboring nuclides discussed. Gammasphere and Eurogam arrays.
doi: 10.1016/S0375-9474(00)00470-X
1999DO34 Nucl.Phys. A660, 381 (1999) J.Domscheit, S.Tormanen, B.Aengenvoort, H.Hubel, R.A.Bark, M.Bergstrom, A.Bracco, R.Chapman, D.M.Cullen, C.Fahlander, S.Frattini, A.Gorgen, G.B.Hagemann, A.Harsmann, B.Herskind, H.J.Jensen, S.L.King, S.Lenzi, D.Napoli, S.W.Odegard, C.M.Petrache, H.Ryde, U.J.van Severen, G.Sletten, P.O.Tjom, C.Ur Triaxial Superdeformation in 163Lu NUCLEAR REACTIONS 139La(29Si, 5n), E=145 MeV; measured Eγ, Iγ, γγ-coin. 163Lu deduced high-spin levels, J, π, superdeformed band J, π, linking transitions, possible triaxial deformation. Euroball array. Cranked mean-field calculations, potential energy surfaces.
doi: 10.1016/S0375-9474(99)00392-9
1999SC13 J.Phys.(London) G25, 807 (1999) C.Schuck, E.Gueorguieva, F.S.Stephens, M.A.Deleplanque, F.Hannachi, A.Korichi, A.Lopez-Martens, B.Kharraja, W.H.Kelly, Ch.Vieu, M.Kaci, J.S.Dionisio, I.Deloncle, B.J.P.Gall, U.J.van Severen, W.Pohler, B.Schulze, H.Hubel, R.Wadsworth Pseudo-Spin Symmetry and Identical SD Bands: The excited superdeformed bands in 191Au NUCLEAR STRUCTURE 191Au; analyzed superdeformed bands alignments; deduced possible pseudo-spin doublet. 190Pt; calculated quasiparticle Routhians. Cranked mean-field calculations.
doi: 10.1088/0954-3899/25/4/042
1999TO08 Phys.Lett. 454B, 8 (1999) S.Tormanen, S.W.Odegard, G.B.Hagemann, A.Harsmann, M.Bergstrom, R.A.Bark, B.Herskind, G.Sletten, P.O.Tjom, A.Gorgen, H.Hubel, B.Aengenvoort, U.J.van Severen, C.Fahlander, D.Napoli, S.Lenzi, C.Petrache, C.Ur, H.J.Jensen, H.Ryde, R.Bengtsson, A.Bracco, S.Frattini, R.Chapman, D.M.Cullen, S.L.King Triaxial Superdeformed Bands in 164Lu and Enhanced E1 Decay-Out Strength NUCLEAR REACTIONS 139La(29Si, 4n), E=145 MeV; measured Eγ, Iγ, γγ-coin. 164Lu deduced high-spin levels, J, π, configurations, triaxial deformation. Euroball array. Cranked mean-field calculations.
doi: 10.1016/S0370-2693(99)00346-9
1998AE01 Eur.Phys.J. A 1, 359 (1998) B.Aengenvoort, W.Korten, H.Hubel, S.Chmel, A.Gorgen, U.J.van Severen, W.Pohler, R.Zinken, T.Hartlein, C.Ender, F.Kock, P.Reiter, D.Schwalm, F.Schindler, J.Gerl, R.Schubart, F.Azaiez, S.Bouneau, J.Duprat, I.Deloncle Conversion-Electron Gamma-Ray Coincidence Spectroscopy of Superdeformed 135Nd NUCLEAR REACTIONS 124Te(16O, 5n), E=111 MeV; measured Eγ, Iγ, E(ce), I(ce), γγ-, (ce)γ-coin. 135Nd deduced high-spin, superdeformed levels, J, π, linking transitions, no E0 transitions. Mini-orange spectrometers.
doi: 10.1007/s100500050070
1998CL06 Phys.Lett. 440B, 251 (1998) R.M.Clark, R.Krucken, S.J.Asztalos, J.A.Becker, B.Busse, S.Chmel, M.A.Deleplanque, R.M.Diamond, P.Fallon, D.Jenkins, K.Hauschild, I.M.Hibbert, H.Hubel, I.Y.Lee, A.O.Macchiavelli, R.W.MacLeod, G.Schmid, F.S.Stephens, U.J.van Severen, K.Vetter, R.Wadsworth, S.Wan The Shears Mechanism in the Lead Isotopes NUCLEAR REACTIONS 172,174,176Yb(26Mg, xn), E=135, 137, 139 MeV; measured Eγ, Iγ, γγ-coin, DSA. 193,194,195,196,197Pb deduced rotational bands transitions T1/2, B(M1), shears mechanism. Magnetic rotation, tilted axis cranking.
doi: 10.1016/S0370-2693(98)01179-4
1998TO28 Nuovo Cim. 111A, 685 (1998) S.Tormanen, G.B.Hagemann, A.Harsmann, M.Bergstrom, R.A.Bark, B.Herskind, G.Sletten, S.W.Odegard, P.O.Tjom, A.Gorgen, H.Hubel, B.Aengenvoort, U.J.van Severen, H.Ryde, C.Fahlander, D.Napoli, S.Lenzi, C.Petrache, C.Ur, H.J.Jensen, A.Bracco, S.Frattini, R.Chapman, D.M.Cullen, S.L.King High-Spin Studies of 164Lu using EUROBALL NUCLEAR REACTIONS 139La(29Si, 4n), E=145 MeV; measured Eγ, Iγ, γγ-coin. 164Lu deduced high-spin levels, J, π, deformation. Cranking model analysis. Euroball array.
1998VA18 Phys.Lett. 434B, 14 (1998) U.J.van Severen, R.M.Clark, R.Krucken, H.Hubel, S.J.Asztalos, J.A.Becker, B.C.Busse, M.A.Deleplanque, R.M.Diamond, P.Fallon, K.Hauschild, I.M.Hibbert, I.Y.Lee, A.O.Macchiavelli, R.W.MacLeod, G.Schmid, F.S.Stephens, K.Vetter, R.Wadsworth, S.Wan Comparative Quadrupole Moments of Superdeformed Bands in 193-196Pb NUCLEAR REACTIONS 172,174,176Yb(26Mg, xn)192Pb/193Pb/194Pb/195Pb/196Pb/197Pb, E=135-139 MeV; measured Eγ, Iγ, γγ-coin, DSA. 193,194,195,196Pb deduced superdeformed bands T1/2, quadrupole moments, configurations.
doi: 10.1016/S0370-2693(98)00819-3
1997AZ05 Acta Phys.Hung.N.S. 6, 289 (1997) F.Azaiez, S.Bouneau, J.Duprat, I.Deloncle, M.-G.Porquet, U.J.van Severen, T.Nakatsukasa, M.M.Aleonard, A.Astier, G.Baldsiefen, C.W.Beausang, F.A.Beck, C.Bourgeois, D.Curien, N.Dozie, L.Ducroux, B.Gall, H.Hubel, M.Kaci, W.Korten, M.Meyer, N.Redon, H.Sergolle, J.F.Sharpey-Schafer Octupole Vibrations of the Superdeformed 196Pb Nucleus NUCLEAR REACTIONS 186W(16O, 6n), E=110 MeV; measured Eγ, Iγ, γγ-coin. 196Pb deduced superdeformed bands, possible octupole vibrations.
1997BO28 Z.Phys. A358, 179 (1997) S.Bouneau, F.Azaiez, J.Duprat, I.Deloncle, M.-G.Porquet, U.J.van Severen, T.Nakatsukasa, M.-M.Aleonard, A.Astier, G.Baldsiefen, C.W.Beausang, F.A.Beck, C.Bourgeois, D.Curien, N.Dozie, L.Ducroux, B.J.P.Gall, H.Hubel, M.Kaci, W.Korten, M.Meyer, N.Redon, H.Sergolle, J.F.Sharpey-Schafer New Results on the Superdeformed 196Pb Nucleus: Decay of the excited bands to the yrast band NUCLEAR REACTIONS 186W(16O, 6n), E=110 MeV; measured Eγ, Iγ, γγγ-coin. 196Pb deduced superdeformed bands, dynamical moments of inertia. RPA model comparisons.
doi: 10.1007/s002180050299
1997HA44 Z.Phys. A358, 183 (1997) F.Hannachi, A.Lopez-Martens, A.Korichi, C.Schuck, E.Gueorguieva, C.Vieu, B.Haas, R.Lucas, A.Astier, G.Baldsiefen, M.Carpenter, G.de France, R.Duffait, L.Ducroux, Y.Le Coz, Ch.Finck, A.Gorgen, H.Hubel, T.L.Khoo, T.Lauritsen, M.Meyer, D.Prevost, N.Redon, C.Rigollet, H.Savajols, J.F.Sharpey-Schafer, O.Stezowski, C.Theisen, U.Van Severen, J.P.Vivien, A.N.Wilson Observation of the Single Step Links of the Yrast Superdeformed Band in 194Pb NUCLEAR REACTIONS 184W(16O, 6n), E=113 MeV; measured Eγ, Iγ, γγ-coin. 194Pb deduced levels, J, π, superdeformed to normal deformed bands transitions.
doi: 10.1007/s002180050301
1997HI07 Z.Phys. A358, 199 (1997) I.M.Hibbert, R.Wadsworth, K.Hauschild, H.Hubel, W.Korten, U.J.van Severen, E.S.Paul, A.N.Wilson, J.N.Wilson, A.P.Byrne, W.Satula, R.Wyss Superdeformed Bands and ' Shears ' Bands in 197Pb and 198Pb NUCLEAR REACTIONS 186W(18O, 6n), (18O, 7n), E=110, 115 MeV; measured Eγ, Iγ, γγ-coin. 197,198Pb deduced high-spin levels, J, π, superdeformed bands, transitions γ-multipolarity related features. Lipkin-Nogami calculations.
doi: 10.1007/s002180050307
1997KA34 Phys.Rev. C56, R600 (1997) M.Kaci, E.Gueorguieva, M.G.Porquet, F.Azaiez, I.Deloncle, S.Bouneau, J.Duprat, M.M.Aleonard, A.Astier, G.Baldsiefen, C.W.Beausang, F.A.Beck, Ch.Bourgeois, D.Curien, N.Dozie, L.Ducroux, B.J.P.Gall, W.Korten, M.Meyer, N.Redon, D.Prevost, H.Sergolle, J.Sharpey-Schafer, U.J.van Severen First Indication of Population of Superdeformed States by Incomplete Fusion Reactions NUCLEAR REACTIONS, ICPND 186W(16O, X)195Pb/196Pb/197Pb/196Tl/197Tl/193Hg/194Hg/190Pt/186Os/188Os, E=110 MeV; measured residual production yield, Eγ, Iγ, γγ-coin; deduced recoil v/c, evidence for incomplete fusion process. 194Hg deduced superdeformed band. EUROGAM II.
doi: 10.1103/PhysRevC.56.R600
1997KO37 Z.Phys. A358, 217 (1997) W.Korten, B.Schulze, H.Hubel, S.Chmel, A.Gorgen, U.J.van Severen, W.Pohler, R.Zinken, T.Hartlein, C.Ender, F.Kock, P.Reiter, D.Schwalm, F.Schindler, J.Gerl, R.Schubart, F.Azaiez, S.Bouneau, J.Duprat, I.Deloncle Conversion-Electron Spectroscopy in the Decay of Superdeformed 135Nd NUCLEAR REACTIONS 124Te(16O, 5n), E=111 MeV; measured Eγ, Iγ, γγ-, (ce)γ-coin. 135Nd deduced high-spin, superdeformed band linking transitions ICC, γ-multipolarity, no evidence for E0 transitions. Mini-orange filter detectors.
doi: 10.1007/s002180050312
1997SC22 Phys.Rev. C56, R1667 (1997) C.Schuck, E.Gueorguieva, A.Lopez-Martens, F.Hannachi, A.Korichi, Ch.Vieu, J.S.Dionisio, I.Deloncle, M.Kaci, F.S.Stephens, M.A.Deleplanque, W.H.Kelly, B.Kharraja, B.J.P.Gall, U.J.van Severen, W.Pohler, B.Schulze, H.Hubel, R.Wadsworth Proton Superdeformed Bands below the Z = 80 Gap in 191Au: Possible evidence for pseudospin coupling NUCLEAR REACTIONS 186W(11B, 6n), E=84, 86 MeV; measured Eγ, Iγ, γγ-coin. 191Au deduced high-spin levels, J, π, superdeformed bands properties, configurations. Psuedospin coupling scheme interpretation.
doi: 10.1103/PhysRevC.56.R1667
1996BA53 Z.Phys. A355, 337 (1996) G.Baldsiefen, H.Hubel, W.Korten, U.J.van Severen, J.A.Cizewski, N.H.Medina, D.R.Napoli, C.Rossi Alvarez, G.Lo Bianco, S.Signorelli Crossing of Shears Bands in 196Pb NUCLEAR REACTIONS 170Er(30Si, 4n), E=143 MeV; measured γγ-coin. 196Pb deduced high-spin levels, J, π, band structure.
doi: 10.1007/s002180050117
1996HI13 Phys.Rev. C54, 2253 (1996) I.M.Hibbert, R.Wadsworth, K.Hauschild, H.Hubel, W.Korten, U.J.van Severen, E.S.Paul, A.N.Wilson, J.N.Wilson, A.P.Byrne, W.Satula, R.Wyss Superdeformed Structures in 197,198Pb NUCLEAR REACTIONS 186W(18O, xn), E=110, 115 MeV; measured Eγ, Iγ, γγ-coin. 197,198Pb deduced superdeformed bands, dynamic moment of inertia. Enriched targets, high purity Ge detectors, BGO suppression shields. Total Routhian surface, cranking Woods-Saxon calculations.
doi: 10.1103/PhysRevC.54.2253
1996LO07 Acta Phys.Pol. B27, 205 (1996) A.Lopez-Martens, E.Gueorguieva, C.Schuck, F.Hannachi, Ch.Vieu, J.S.Dionisio, M.Kaci, I.Deloncle, M.G.Porquet, A.Korichi, J.Duprat, S.Bouneau, F.Azaiez, W.H.Kelly, B.J.P.Gall, B.Kharraja, U.J.van Severen, W.Pohler, B.Schulze, H.Hubel, M.A.Deleplanque, R.Wadsworth Supeprdeformed Proton Orbitals Below the Z = 80 Gap: 191Au NUCLEAR REACTIONS 186W(11B, 6n), E=84, 86 MeV; measured γγ-coin. 191Au deduced levels, J, π, superdeformed bands, dynamical moment of inertia.
1996LO12 Phys.Lett. 380B, 18 (1996) A.Lopez-Martens, F.Hannachi, A.Korichi, C.Schuck, E.Gueorguieva, Ch.Vieu, B.Haas, R.Lucas, A.Astier, G.Baldsiefen, M.Carpenter, G.de France, R.Duffait, L.Ducroux, Y.Le Coz, Ch.Finck, A.Gorgen, H.Hubel, T.L.Khoo, T.Lauritsen, M.Meyer, D.Prevost, N.Redon, C.Rigollet, H.Savajols, J.F.Sharpey-Schafer, O.Stezowski, Ch.Theisen, U.Van Severen, J.P.Vivien, A.N.Wilson Single Step Links of the Superdeformed Band in 194Pb: A measure of the absolute excitation energy, spin and parity of the superdeformed states NUCLEAR REACTIONS 184W(16O, 6n), E=113 MeV; measured Eγ, Iγ. 194Pb deduced levels, J, π, superdeformed band.
doi: 10.1016/0370-2693(96)00367-X
1995BA35 Nucl.Phys. A587, 562 (1995) G.Baldsiefen, S.Chmel, H.Hubel, W.Korten, M.Neffgen, W.Pohler, U.J.van Severen, J.Heese, H.Kluge, K.H.Maier, K.Spohr Shears Bands and Their Links to Spherical States in 197Pb NUCLEAR REACTIONS 186W(16O, 5n), E=97 MeV; measured γγ-coin, Eγ, γγ(θ), DCO ratios. 197Pb deduced levels, shears bands, J, π. Compton-suppressed Ge detectors, BGO detectors. Titled-axis cranking calculations.
doi: 10.1016/0375-9474(95)00025-V
1995KO15 Z.Phys. A351, 143 (1995) W.Korten, P.Brocking, H.Hubel, W.Pohler, U.J.van Severen, P.Willsau, T.Hartlein, C.Ender, P.Reiter, D.Schwalm, J.Gerl, T.Happ, T.Kroll, M.Kaspar, I.Peter, S.Schremmer, K.Vetter Lifetime of the Two-Phonon Vibrational State in 232Th NUCLEAR REACTIONS 232Th(90Zr, 90Zr'), E=410 MeV; measured Eγ, Iγ following Coulomb excitation, Doppler-shift recoil distance. 232Th deduced high-spin levels T1/2, B(λ).
doi: 10.1007/BF01289524
1995KO38 Phys.Scr. T56, 44 (1995) W.Korten, G.Baldsiefen, M.Neffgen, H.Hubel, S.Chmel, W.Pohler, U.J.van Severen, P.Willsau, S.Frauendorf, J.Meng, H.Grawe, J.Heese, H.Kluge, K.H.Maier, R.Schubart, K.Spohr ' Shears Bands ' in Pb Nuclei - a New Nuclear Structure Effect NUCLEAR STRUCTURE 199Pb; calculated levels, B(M1). Tilted-axis cranking model.
doi: 10.1088/0031-8949/1995/T56/007
1995NE09 Nucl.Phys. A595, 499 (1995) M.Neffgen, G.Baldsiefen, S.Frauendorf, H.Grawe, J.Heese, H.Hubel, H.Kluge, A.Korichi, W.Korten, K.H.Maier, D.Mehta, J.Meng, N.Nenoff, M.Piiparinen, M.Schonhofer, R.Schubart, U.J.van Severen, N.Singh, G.Sletten, B.V.T.Rao, P.Willsau Lifetimes of Shears Bands in 199Pb NUCLEAR REACTIONS 186W(18O, 5n), E=92, 94 MeV; measured γγ-coin, DSA, Doppler shifts. 199Pb levels deduced T1/2, B(λ). Compton-suppressed Ge detectors. Tilted-axis cranking calculations.
doi: 10.1016/0375-9474(95)00375-4
1995VA32 Z.Phys. A353, 15 (1995) U.J.van Severen, W.Korten, H.Hubel, D.Bazzacco, G.LoBianco, N.H.Medina, C.Rossi Alvarez, S.Signorelli, K.Strahle, P.Willsau A Pair of Excited Superdeformed Bands in 196Pb NUCLEAR REACTIONS 170Er(30Si, 4n), E=143 MeV; measured γγ-coin. 196Pb deduced levels, J, π, excited superdeformed bands.
doi: 10.1007/BF01297721
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