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NSR database version of May 24, 2024.

Search: Author = U.J.van Severen

Found 22 matches.

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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
Citations: PlumX Metrics

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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
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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
Citations: PlumX Metrics


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
Citations: PlumX Metrics

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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
Citations: PlumX Metrics


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
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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
Citations: PlumX Metrics


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
Citations: PlumX Metrics


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
Citations: PlumX Metrics


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
Citations: PlumX Metrics


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
Citations: PlumX Metrics


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
Citations: PlumX Metrics


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
Citations: PlumX Metrics


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
Citations: PlumX Metrics


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.


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
Citations: PlumX Metrics

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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
Citations: PlumX Metrics


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
Citations: PlumX Metrics


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
Citations: PlumX Metrics


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
Citations: PlumX Metrics


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