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Search: Author = G.Baldsiefen

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2004IO01      Phys.Rev. C 70, 034305 (2004)

M.Ionescu-Bujor, A.Iordachescu, D.L.Balabanski, S.Chmel, G.Neyens, G.Baldsiefen, D.Bazzacco, F.Brandolini, D.Bucurescu, M.Danchev, M.De Poli, G.Georgiev, A.Gorgen, H.Haas, H.Hubel, G.Ilie, N.Marginean, R.Menegazzo, P.Pavan, G.Rainovski, R.V.Ribas, C.Rossi Alvarez, C.A.Ur, K.Vyvey, S.Frauendorf

Quadrupole moments and g factors for high-spin neutron isomers in 193Pb

NUCLEAR REACTIONS 170Er(28Si, 5n), (28Si, 4n), E=143 MeV; measured Eγ, Iγ(θ, H, t). 193Pb deduced high-spin isomeric states g factors, quadrupole moments, T1/2. 194Pb level deduced quadrupole moment. Comparisons with microscopic BCS and pairing plus quadrupole tilted-axis cranking model predictions. Time-differential perturbed angular distribution method.

doi: 10.1103/PhysRevC.70.034305
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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
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1999PO13      Eur.Phys.J. A 5, 257 (1999)

W.Pohler, G.Baldsiefen, H.Hubel, W.Korten, E.Mergel, D.Rossbach, B.Aengenvoort, S.Chmel, A.Gorgen, N.Nenoff, R.Julin, P.Jones, H.Kankaanpaa, P.A.Butler, K.J.Cann, P.T.Greenlees, G.D.Jones, J.F.Smith

Conversion Electron Spectroscopy of Magnetic-Rotational Bands in 197Pb and 199Pb

NUCLEAR REACTIONS 186W(16O, 5n), E=97 MeV; 186W(18O, 5n), E=94 MeV; measured prompt and delayed Eγ, Iγ, E(ce), I(ce), (ce)γ-, (ce)(ce)-coin. 197,199Pb deduced high-spin levels, J, π, ICC, multipolarity, configurations, magnetic-rotational bands. Mini-orange spectrometer.

doi: 10.1007/s100500050284
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1998NE01      Nucl.Phys. A629, 621 (1998)

N.Nenoff, G.Baldsiefen, H.Hubel, A.Gorgen, W.Korten, M.A.Deleplanque, R.M.Diamond, P.Fallon, I.Y.Lee, A.O.Macchiavelli, F.S.Stephens

Dipole Band Structures in 195Hg

NUCLEAR REACTIONS 192Os(9Be, 6n), E=80 MeV; measured Eγ, Iγ, γγ-coin, DCO ratios. 195Hg deduced high-spin levels, J, π, dipole bands. Compton-supressed Ge, BGO detectors.

doi: 10.1016/S0375-9474(97)00653-2
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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
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1997CH33      Phys.Rev.Lett. 79, 2002 (1997)

S.Chmel, F.Brandolini, R.V.Ribas, G.Baldsiefen, A.Gorgen, M.De Poli, P.Pavan, H.Hubel

g Factor of a Magnetic-Rotational Band Head in 193Pb

NUCLEAR REACTIONS 170Er(28Si, 5n), E=143 MeV; measured Eγ, Iγ(θ, H, t). 193Pb level deduced g factor, high-spin shears band configuration.

doi: 10.1103/PhysRevLett.79.2002
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1997CL03      Phys.Rev.Lett. 78, 1868 (1997)

R.M.Clark, S.J.Asztalos, G.Baldsiefen, J.A.Becker, L.Bernstein, M.A.Deleplanque, R.M.Diamond, P.Fallon, I.M.Hibbert, H.Hubel, R.Krucken, I.Y.Lee, A.O.Macchiavelli, R.W.MacLeod, G.Schmid, F.S.Stephens, K.Vetter, R.Wadsworth, S.Frauendorf

Evidence for ' Magnetic Rotation ' in Nuclei: Lifetimes of states in the M1 bands of 198,199Pb

NUCLEAR REACTIONS 186W(18O, 5n), (18O, 6n), E=99, 104 MeV; measured γγ-energy correlations, Doppler-broadened line shapes, Eγ, Iγ, DSA. 198,199Pb deduced high-spin levels, T1/2, B(λ), magnetic rotation evidence.

doi: 10.1103/PhysRevLett.78.1868
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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
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1997HU12      Z.Phys. A358, 237 (1997)

H.Hubel, G.Baldsiefen, R.M.Clark, S.J.Asztalos, J.A.Becker, L.Bernstein, M.A.Deleplanque, R.M.Diamond, P.Fallon, I.M.Hibbert, R.Krucken, I.Y.Lee, A.O.Macchiavelli, R.W.MacLeod, G.Schmid, F.S.Stephens, K.Vetter, R.Wadsworth

Shears Bands in the Pb Region

NUCLEAR REACTIONS 186W(18O, 5n), E=104 MeV; measured Eγ, Iγ, γγ-coin, γγ(θ). 199Pb deduced high-spin levels, J, π, configurations, shears bands, magnetic rotation role in M1 transitions.

doi: 10.1007/s002180050317
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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
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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
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1996BA54      Phys.Rev. C54, 1106 (1996)

G.Baldsiefen, M.A.Stoyer, J.A.Cizewski, D.P.McNabb, W.Younes, J.A.Becker, L.A.Bernstein, M.J.Brinkman, L.P.Farris, E.A.Henry, J.R.Hughes, A.Kuhnert, T.F.Wang, B.Cederwall, R.M.Clark, M.A.Deleplanque, R.M.Diamond, P.Fallon, I.Y.Lee, A.O.Macchiavelli, J.Oliveira, F.S.Stephens, J.Burde, D.T.Vo, S.Frauendorf

Shears Bands in 193Pb

NUCLEAR REACTIONS 174Yb(24Mg, 5n), E=129, 131, 134 MeV; measured Eγ, Iγ, directional correlations. 193Pb deduced high-spin levels, J, π, band structure, B(λ), single-particle configurations of M1 bands. Tilted axis cranking model analysis.

doi: 10.1103/PhysRevC.54.1106
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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
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1996MC01      Phys.Rev. C53, R541 (1996)

D.P.McNabb, G.Baldsiefen, L.A.Bernstein, J.A.Cizewski, H.-Q.Jin, W.Younes, J.A.Becker, L.P.Farris, E.A.Henry, J.R.Hughes, C.S.Lee, S.J.Asztalos, B.Cederwall, R.M.Clark, M.A.Deleplanque, R.M.Diamond, P.Fallon, I.Y.Lee, A.O.Macchiavelli, F.S.Stephens

Superdeformation in 198Po

NUCLEAR REACTIONS 174Yb(29Si, 5n), E=148 MeV; measured Eγ, Iγ. 198Po deduced superdeformed band levels, dynamic moments of inertia.

doi: 10.1103/PhysRevC.53.R541
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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
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1995BA70      Nucl.Phys. A592, 365 (1995)

G.Baldsiefen, P.Maagh, H.Hubel, W.Korten, S.Chmel, M.Neffgen, W.Pohler, H.Grawe, K.H.Maier, K.Spohr, R.Schubart, S.Frauendorf, H.J.Maier

Shears Bands in 201Pb and 202Pb

NUCLEAR REACTIONS 192Os(14C, xn), E=76 MeV; measured γγ-coin, Eγ, γγ(θ), DCO ratios. 201,202Pb deduced levels, J, π, shears bands. Compton-suppressed Ge detectors, BGO detectors. Tilted-axis cranking calculations.

doi: 10.1016/0375-9474(95)00305-K
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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
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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
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1994BA43      Nucl.Phys. A574, 521 (1994)

G.Baldsiefen, H.Hubel, W.Korten, D.Mehta, N.Nenoff, B.V.T.Rao, P.Willsau, H.Grawe, J.Heese, H.Kluge, K.H.Maier, R.Schubart, S.Frauendorf, H.J.Maier

' Shears Bands ' in 199Pb and 200Pb

NUCLEAR REACTIONS 186W(18O, xn), E=94 MeV; 192Os(12C, 5n), E=82 MeV; 192Os(13C, 6n), E=81 MeV; 192Os(13C, 5n), E=76 MeV; measured γγ-coin, Eγ, γγ(θ). 199,200Pb deduced levels, J, π, rotational bands. Compton-suppressed Ge detectors, BGO detectors. Tilted-axis cranking calculations.

doi: 10.1016/0375-9474(94)90243-7
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1994DU19      Z.Phys. A347, 289 (1994)

J.Duprat, C.Vieu, F.Azaiez, G.Baldsiefen, C.Bourgeois, R.M.Clark, I.Deloncle, J.S.Dionisio, B.Gall, F.Hannachi, H.Hubel, M.Kaci, A.Korichi, Y.Le Coz, M.Meyer, N.Perrin, M.G.Porquet, N.Redon, C.Schuck, H.Sergolle, R.Wadsworth

First Evidence of the Magnetic Character of Dipole Transitions in the ' Oblate Bands ' of 199Pb

NUCLEAR REACTIONS 186W(18O, 5n), E=95 MeV; measured Eγ, Iγ, I(ce). 199Pb deduced transition γ-multipolarity, ICC.

doi: 10.1007/BF01289799
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1993BA01      Phys.Lett. 298B, 54 (1993)

G.Baldsiefen, U.Birkental, H.Hubel, N.Nenoff, B.V.T.Rao, P.Willsau, J.Heese, H.Kluge, K.H.Maier, R.Schubart, S.Frauendorf

First Observation of a Crossing of Oblate Dipole Bands in the A = 200 Region

NUCLEAR REACTIONS 186W(18O, 5n), E=94 MeV; measured γγ-coin, Iγ, Eγ, DCO ratios. 199Pb deduced levels, J, π, band structure.

doi: 10.1016/0370-2693(93)91706-S
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1993SC13      Phys.Lett. 303B, 230 (1993)

W.Schmitz, H.Hubel, C.X.Yang, G.Baldsiefen, U.Birkental, G.Frohlingsdorf, D.Mehta, R.Musseler, M.Neffgen, P.Willsau, J.Gascon, G.B.Hagemann, A.Maj, D.Muller, J.Nyberg, M.Piiparinen, A.Virtanen, R.Wyss

Transition Quadrupole Moments of a Large-Deformation Intruder Band in 163Lu

NUCLEAR REACTIONS 147Sm(19F, X), E=85 MeV; measured γγ-coin, DSA, recoil distance. 163Lu deduced levels, J, π, T1/2, band structure, transition quadrupole moment. Cranked shell model.

doi: 10.1016/0370-2693(93)91425-M
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1992BA13      Phys.Lett. 275B, 252 (1992)

G.Baldsiefen, H.Hubel, D.Mehta, B.V.T.Rao, U.Birkental, G.Frohlingsdorf, M.Neffgen, N.Nenoff, S.C.Pancholi, N.Singh, W.Schmitz, K.Theine, P.Willsau, H.Grawe, J.Heese, H.Kluge, K.H.Maier, M.Schramm, R.Schubart, H.J.Maier

Oblate Collective Bands in 199Pb and 200Pb

NUCLEAR REACTIONS 192Os(12C, 5n), (12C, 4n), E=76, 81 MeV; measured γγ-coin, Iγ. 199,200Pb deduced levels, J, π, γ-multipolarity, B(λ) ratios, band structure, shape features.

doi: 10.1016/0370-2693(92)91586-X
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1992BA39      Z.Phys. A343, 245 (1992)

G.Baldsiefen, H.Hubel, F.Azaiez, C.Bourgeois, D.Hojman, A.Korichi, N.Perrin, H.Sergolle

Rotational Bands in 201Pb

NUCLEAR REACTIONS 192Os(14C, 5n), E=70 MeV; measured γγ-coin. 201Pb deduced levels, J, π, rotational bands, configurations.

doi: 10.1007/BF01291831
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1991HA02      Phys.Rev. C43, 514 (1991)

F.Hardeman, G.Neyens, G.Scheveneels, R.Nouwen, G.Sheeren, M.Van Den Bergh, R.Coussement, A.P.Byrne, R.Musseler, H.Hubel, G.Baldsiefen

Quadrupole Moments of High Spin Isomers in 213Fr, 212Fr, and 211Fr

RADIOACTIVITY 213,212,211Fr; measured Eγ, quadrupole interaction frequency in Tl; deduced electric field gradient for Fr in Tl. 211,212,213Fr deduced isomer levels quadrupole moments.

doi: 10.1103/PhysRevC.43.514
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