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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, T_1/2. 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, T_1/2, 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 T_1/2, 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, T_1/2, 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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