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NSR database version of April 11, 2024.

Search: Author = K.Vetter

Found 85 matches.

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2017CA06      Prog.Part.Nucl.Phys. 94, 68 (2017)

J.Carlson, M.P.Carpenter, R.Casten, C.Elster, P.Fallon, A.Gade, C.Gross, G.Hagen, A.C.Hayes, D.W.Higinbotham, C.R.Howell, C.J.Horowitz, K.L.Jones, F.G.Kondev, S.Lapi, A.Macchiavelli, E.A.McCutchan, J.Natowitz, W.Nazarewicz, T.Papenbrock, S.Reddy, M.J.Savage, G.Savard, B.M.Sherrill, L.G.Sobotka, M.A.Stoyer, M.B.Tsang, K.Vetter, I.Wiedenhoever, A.H.Wuosmaa, S.Yennello

White paper on nuclear astrophysics and low-energy nuclear physics, Part 2: Low-energy nuclear physics

doi: 10.1016/j.ppnp.2016.11.002
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2015WR02      Phys.Rev. C 92, 044327 (2015)

J.Wrzesinski, G.J.Lane, K.H.Maier, R.V.F.Janssens, G.D.Dracoulis, R.Broda, A.P.Byrne, M.P.Carpenter, R.M.Clark, M.Cromaz, B.Fornal, T.Lauritsen, A.O.Macchiavelli, M.Rejmund, B.Szpak, K.Vetter, S.Zhu

High-spin yrast structure of 204Hg from the decay of a four-hole, 22+ isomer

NUCLEAR REACTIONS 238U(208Pb, X), E=1360 MeV; 238U(48Ca, X), E=330 MeV; 238U(208Pb, X), E=1450 MeV; measured Eγ, in-beam and off-beam Iγ, γγ-coin, γγ(θ), half-lives of isomers by γγ(t) using Gammasphere array at ATLAS-ANL. 204Hg; deduced high-spin levels, J, π, isomers, internal conversion coefficients from intensity balances, multipolarities, configurations, B(M1), B(E1), B(E2), B(E3). Comparison with shell-model calculations.

doi: 10.1103/PhysRevC.92.044327
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2012WA35      Phys.Rev. C 86, 064319 (2012)

D.Ward, A.O.Macchiavelli, R.M.Clark, D.Cline, M.Cromaz, M.A.Deleplanque, R.M.Diamond, P.Fallon, A.Gorgen, A.B.Hayes, G.J.Lane, I.-Y.Lee, T.Nakatsukasa, G.Schmidt, F.S.Stephens, C.E.Svensson, R.Teng, K.Vetter, C.Y.Wu

Band structure of 235U

NUCLEAR REACTIONS 235U(136Xe, 136Xe'), E=720 MeV; 235U(40Ca, 40Ca'), E=184 MeV; measured Eγ, Iγ, (particle)γ-, γγ-coin, Coulomb excitation yields, γ branching ratios using Gammasphere, 8π and CHICO arrays. 235U; deduced high-spin levels, J, π, B(M1), B(E2), B(E3) from Winther-deBoer analysis, gK, magnetic decoupling parameter, rotational bands, configurations. Analyzed coriolis interaction in j15/2 orbital. Comparison with quasiparticle random phase approximation (QRPA) calculations for B(E3). Discussed E3 correlations and Coriolis effects.

doi: 10.1103/PhysRevC.86.064319
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2007HA05      Phys.Rev. C 75, 034308 (2007)

A.B.Hayes, D.Cline, C.Y.Wu, H.Ai, H.Amro, C.Beausang, R.F.Casten, J.Gerl, A.A.Hecht, A.Heinz, H.Hua, R.Hughes, R.V.F.Janssens, C.J.Lister, A.O.Macchiavelli, D.A.Meyer, E.F.Moore, P.Napiorkowski, R.C.Pardo, Ch.Schlegel, D.Seweryniak, M.W.Simon, J.Srebrny, R.Teng, K.Vetter, H.J.Wollersheim

Spin dependence of K mixing, strong configuration mixing, and electromagnetic properties of 178Hf

NUCLEAR REACTIONS 178Hf(136Xe, 136Xe'), E=650 MeV; measured prompt and delayed Eγ, Iγ, γγ-, (particle)γ-coin following Coulomb excitation. Ta(178Hf, 178Hf'), E ≈ 700-850 MeV; measured isomer production σ. 178Hf deduced levels, J, π, rotational bands, transition matrix elements, K-mixing features. Gammasphere, Chico arrays.

doi: 10.1103/PhysRevC.75.034308
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2007NG03      Phys.Rev. C 75, 034305 (2007)

E.Ngijoi-Yogo, S.K.Tandel, G.Mukherjee, I.Shestakova, P.Chowdhury, C.Y.Wu, D.Cline, A.B.Hayes, R.Teng, R.M.Clark, P.Fallon, A.O.Macchiavelli, K.Vetter, F.G.Kondev, S.Langdown, P.M.Walker, C.Wheldon, D.M.Cullen

Collective rotation and vibration in neutron-rich 180, 182Hf nuclei

NUCLEAR REACTIONS 180Hf(136Xe, X)180Hf/182Hf, E=750 MeV; measured Eγ, Iγ, γγ-, (particle)γ-coin. 180,182Hf deduced levels, J, π, rotational and vibrational bands features. Gammasphere, Chico arrays.

doi: 10.1103/PhysRevC.75.034305
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2007ST19      Nucl.Phys. A787, 455c (2007)

M.A.Stoyer, W.B.Walters, C.Y.Wu, D.Cline, H.Hua, A.B.Hayes, R.Teng, R.M.Clark, P.Fallon, A.Goergen, A.O.Macchiavelli, K.Vetter, P.Mantica, B.Tomlin

Spectroscopy of neutron-rich Pd and Cd isotopes near A=120

NUCLEAR REACTIONS 238U(α, F), E=30 MeV; measured fission fragment yield, Eγ, Iγ, (fragment)γ-coin. 117,118,120Pd, 122,124Cd deduced levels, J, π.

NUCLEAR STRUCTURE 94,96,98,100,102,104,106,108,110,112,114,116,118,120Pd; analyzed levels, J, π; deduced configuration systematics and shell closure effects.

doi: 10.1016/j.nuclphysa.2006.12.068
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2006HA04      Phys.Rev.Lett. 96, 042505 (2006)

A.B.Hayes, D.Cline, C.Y.Wu, J.Ai, H.Amro, C.Beausang, R.F.Casten, J.Gerl, A.A.Hecht, A.Heinz, R.Hughes, R.V.F.Janssens, C.J.Lister, A.O.Macchiavelli, D.A.Meyer, E.F.Moore, P.Napiorkowski, R.C.Pardo, Ch.Schlegel, D.Seweryniak, M.W.Simon, J.Srebrny, R.Teng, K.Vetter, H.J.Wollersheim

Breakdown of K Selection in 178Hf

NUCLEAR REACTIONS Ta(178Hf, 178Hf'), E≈ 700-850 MeV; measured delayed Eγ, Iγ following projectile Coulomb excitation; deduced isomer excitation function. 178Hf deduced transition matrix elements, K-mixing features.

RADIOACTIVITY 178mHf(IT) [from Coulomb excitation]; measured Eγ, Iγ. 178Hf deduced transition matrix elements, K-mixing features.

doi: 10.1103/PhysRevLett.96.042505
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2006WU01      Phys.Rev. C 73, 034312 (2006)

C.Y.Wu, H.Hua, D.Cline, A.B.Hayes, R.Teng, D.Riley, R.M.Clark, P.Fallon, A.Goergen, A.O.Macchiavelli, K.Vetter

Evidence for possible shape transitions in neutron-rich Ru isotopes: Spectroscopy of 109, 110, 111, 112Ru

NUCLEAR REACTIONS 238U(α, F)109Ru/110Ru/111Ru/112Ru, E=30 MeV; measured Eγ, Iγ, γγ-, (fragment)γ-coin. 109,110,111,112Ru deduced high-spin levels, J, π, configurations, B(M1)/B(E2). Gammasphere, Chico arrays, cranked mean-field calculations.

doi: 10.1103/PhysRevC.73.034312
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2005LA01      Phys.Lett. B 606, 34 (2005)

G.J.Lane, K.H.Maier, A.P.Byrne, G.D.Dracoulis, R.Broda, B.Fornal, M.P.Carpenter, R.M.Clark, M.Cromaz, R.V.F.Janssens, A.O.Macchiavelli, I.Wiedenhover, K.Vetter

High-spin isomers and three-neutron valence configurations in 211Pb

NUCLEAR REACTIONS 238U(208Pb, X)211Pb, E=1360 MeV; measured prompt and delayed Eγ, Iγ, γγ-coin. 211Pb deduced high-spin levels, J, π, configurations, isomeric states T1/2. Gammasphere array.

doi: 10.1016/j.physletb.2004.11.065
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2005SI23      Phys.Rev. C 72, 024318 (2005)

A.J.Simons, R.Wadsworth, D.G.Jenkins, R.M.Clark, M.Cromaz, M.A.Deleplanque, R.M.Diamond, P.Fallon, G.J.Lane, I.Y.Lee, A.O.Macchiavelli, F.S.Stephens, C.E.Svensson, K.Vetter, D.Ward, S.Frauendorf, Y.Gu

Investigation of antimagnetic rotation in light Cadmium nuclei: 106, 108Cd

NUCLEAR REACTIONS 62Ni(48Ca, 4n), E=183, 207 MeV; 96Zr(16O, 4n), E=72 MeV; measured Eγ, Iγ, γγ-coin, DSA. 106,108Cd deduced high-spin levels, J, π, T1/2, B(E2), configurations. Gammasphere array.

doi: 10.1103/PhysRevC.72.024318
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2004HU02      Phys.Rev. C 69, 014317 (2004)

H.Hua, C.Y.Wu, D.Cline, A.B.Hayes, R.Teng, R.M.Clark, P.Fallon, A.Goergen, A.O.Macchiavelli, K.Vetter

Triaxiality and the aligned h11/2 neutron orbitals in neutron-rich Zr and Mo isotopes

NUCLEAR REACTIONS 238U(α, F), E=30 MeV; measured Eγ, Iγ, γγ-, (fragment)γ-coin, fission fragment mass distributions. 100,101,102,103,104Zr, 102,103,104,105,106,107,108Mo; deduced high-spin levels, J, π, configurations, triaxial deformation. Gammasphere, Chico arrays, cranked mean-field calculations.

doi: 10.1103/PhysRevC.69.014317
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2004KA18      Phys.Rev. C 69, 034330 (2004)

D.Karlgren, R.M.Clark, I.Ragnarsson, C.E.Svensson, D.Ward, R.Wyss, C.Andreoiu, R.A.E.Austin, M.P.Carpenter, M.Cromaz, M.A.Deleplanque, R.M.Diamond, P.Fallon, A.Gorgen, R.V.F.Janssens, T.L.Khoo, F.Kondev, G.J.Lane, T.Lauritsen, I.Y.Lee, A.O.Macchiavelli, T.Rodinger, D.Rudolph, D.G.Sarantites, D.Seweryniak, T.Steinhardt, F.S.Stephens, O.Thelen, K.Vetter, J.C.Waddington

High-angular-momentum structures in 64Zn

NUCLEAR REACTIONS 40Ca(28Si, 4p), E=122 MeV; measured Eγ, Iγ, γγ-, (charged particle)γ-coin. 64Zn deduced high-spin levels, J, π, configurations, B(M1)/B(E2). Gammasphere, Microball arrays, cranked Nilsson-Strutinsky calculations.

doi: 10.1103/PhysRevC.69.034330
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2004KE04      Eur.Phys.J. A 20, 131 (2004)

N.S.Kelsall, C.E.Svensson, S.Fischer, D.E.Appelbe, R.A.E.Austin, D.P.Balamuth, G.C.Ball, J.A.Cameron, M.P.Carpenter, R.M.Clark, M.Cromaz, M.A.Deleplanque, R.M.Diamond, P.Fallon, D.F.Hodgson, R.V.F.Janssens, D.G.Jenkins, G.J.Lane, C.J.Lister, A.O.Macchiavelli, C.D.O'Leary, D.G.Sarantites, F.S.Stephens, D.C.Schmidt, D.Seweryniak, K.Vetter, J.C.Waddington, R.Wadsworth, D.Ward, A.N.Wilson, A.V.Afanasjev, S.Frauendorf, I.Ragnarsson

High-spin structure of N ≈ Z nuclei around the A = 72 region

NUCLEAR REACTIONS 40Ca(36Ar, n3p), E=145 MeV; 40Ca(40Ca, 2α), E=164 MeV; measured Eγ, Iγ, γγ-, (charged particle)γ-coin. 72Br, 72Kr deduced high-spin levels.

doi: 10.1140/epja/i2002-10338-7
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2004OL04      Phys.Rev. C 69, 034316 (2004)

C.D.O'Leary, R.Wadsworth, P.Fallon, C.E.Svensson, I.Ragnarsson, D.E.Appelbe, R.A.E.Austin, G.C.Ball, J.A.Cameron, M.P.Carpenter, R.M.Clark, M.Cromaz, M.A.Deleplanque, R.M.Diamond, D.F.Hodgson, R.V.F.Janssens, D.G.Jenkins, N.S.Kelsall, G.J.Lane, C.J.Lister, A.O.Macchiavelli, D.Sarantites, F.S.Stephens, D.Seweryniak, K.Vetter, J.C.Waddington, D.Ward

High-spin study of rotational structures in 72Br

NUCLEAR REACTIONS 40Ca(36Ar, n3p), E=145 MeV; measured Eγ, Iγ, γγ-, (neutron)γ-, (charged particle)γ-coin. 72Br deduced high-spin levels, J, π, configurations, transition quadrupole moments. Gammasphere, Microball arrays.

doi: 10.1103/PhysRevC.69.034316
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2004WU05      Phys.Rev. C 70, 014313 (2004)

C.Y.Wu, D.Cline, M.W.Simon, R.Teng, K.Vetter, M.P.Carpenter, R.V.F.Janssens, I.Wiedenhover

Rotational bands in neutron-rich 169, 171, 172Er

NUCLEAR REACTIONS 170Er(238U, X)169Er/171Er/172Er, E=1358 MeV; measured Eγ, Iγ, γγ-, (particle)γ-coin. 169,171,172Er deduced high-spin levels, J, π, configurations, B(M1)/B(E2). Gammasphere, Chico arrays.

doi: 10.1103/PhysRevC.70.014313
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2004WU08      Phys.Rev. C 70, 064312 (2004)

C.Y.Wu, H.Hua, D.Cline, A.B.Hayes, R.Teng, R.M.Clark, P.Fallon, A.Goergen, A.O.Macchiavelli, K.Vetter

Multifaceted yrast structure and the onset of deformation in 96, 97Sr and 98, 99Zr

NUCLEAR REACTIONS 238U(α, F)96Sr/97Sr/98Zr/99Zr, E=30 MeV; measured Eγ, Iγ, γγ-, (fragment)γ-coin. 96,97Sr, 98,99Zr deduced high-spin levels, J, π, configurations. Gammasphere, Chico arrays.

doi: 10.1103/PhysRevC.70.064312
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2003HU05      Phys.Lett. B 562, 201 (2003)

H.Hua, C.Y.Wu, D.Cline, A.B.Hayes, R.Teng, R.M.Clark, P.Fallon, A.Goergen, A.O.Macchiavelli, K.Vetter

The sudden onset of the band crossing for the aligned π g9/2 orbitals: a possible transition of triaxial shape from prolate to oblate?

NUCLEAR REACTIONS 238U(α, F), E=30 MeV; measured Eγ, Iγ, γγ-, (fission fragment)γ-coin. 112Ru, 116Pd deduced high-spin levels, J, π, configurations possible shape transition. Comparisons with neighboring nuclides. Gammasphere, Chico arrays.

doi: 10.1016/S0370-2693(03)00569-0
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2003LE11      Rep.Prog.Phys. 66, 1095 (2003)

I.Y.Lee, M.A.Deleplanque, K.Vetter

Developments in large gamma-ray detector arrays

doi: 10.1088/0034-4885/66/7/201
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2003SI14      Phys.Rev.Lett. 91, 162501 (2003)

A.J.Simons, R.Wadsworth, D.G.Jenkins, R.M.Clark, M.Cromaz, M.A.Deleplanque, R.M.Diamond, P.Fallon, G.J.Lane, I.Y.Lee, A.O.Macchiavelli, F.S.Stephens, C.E.Svensson, K.Vetter, D.Ward, S.Frauendorf

Evidence for a New Type of Shears Mechanism in 106Cd

NUCLEAR REACTIONS 62Ni(48Ca, 4n), E=183, 207 MeV; measured Eγ, Iγ, γγ-coin, DSA. 106Cd deduced high-spin levels T1/2, B(E2), deformations, shears band, antimagnetic rotation. Gammasphere array.

doi: 10.1103/PhysRevLett.91.162501
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2003WU07      Phys.Rev. C 68, 044305 (2003)

C.Y.Wu, D.Cline, M.W.Simon, R.Teng, K.Vetter, M.P.Carpenter, R.V.F.Janssens, I.Wiedenhover

Kπ=4- isomers and their rotational bands in 168, 170Er

NUCLEAR REACTIONS 168,170Er(238U, 238U'), E=1358 MeV; measured prompt and delayed Eγ, Iγ, γγ-, (particle)γ-coin. 168,170Er deduced levels, J, π, rotational bands, B(E1), configurations. Gammasphere, Chico arrays.

doi: 10.1103/PhysRevC.68.044305
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2002GO03      Phys.Rev. C65, 027302 (2002)

A.Gorgen, R.M.Clark, P.Fallon, M.Cromaz, M.A.Deleplanque, R.M.Diamond, G.J.Lane, I.Y.Lee, A.O.Macchiavelli, R.G.Ramos, F.S.Stephens, C.E.Svensson, K.Vetter, D.Ward, M.P.Carpenter, R.V.F.Janssens, R.Wadsworth

Excited Structure with a Very Extended Shape in 108Cd

NUCLEAR REACTIONS 64Ni(48Ca, 4n), E=207 MeV; measured Eγ, Iγ, γγ-coin, fractional Doppler shifts. 108Cd deduced high-spin levels, J, π, rotational band quadrupole moment, extreme deformation. Gammasphere array.

doi: 10.1103/PhysRevC.65.027302
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2002HA54      Phys.Rev.Lett. 89, 242501 (2002)

A.B.Hayes, D.Cline, C.Y.Wu, M.W.Simon, R.Teng, J.Gerl, C.Schlegel, H.J.Wollersheim, A.O.Macchiavelli, K.Vetter, P.Napiorkowski, J.Srebrny

Coulomb Excitation Paths of High-K Isomer Bands in 178Hf

NUCLEAR REACTIONS 178Hf(136Xe, 136Xe'), E=650 MeV; measured prompt and delayed Eγ, Iγ, (particle)γ-, γγ-coin following Coulomb excitation; deduced high-K isomer bands population mechanisms. 178Hf deduced high-spin levels, J, π, B(E2), K-mixing features. Gammasphere and Chico arrays.

doi: 10.1103/PhysRevLett.89.242501
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2002HU07      Phys.Rev. C65, 064325 (2002)

H.Hua, C.Y.Wu, D.Cline, A.B.Hayes, R.Teng, R.M.Clark, P.Fallon, A.O.Macchiavelli, K.Vetter

High-Spin States in 103, 105Mo, 103Nb, and the νh11/2 Alignment

NUCLEAR REACTIONS 238U(α, F), E=30 MeV; measured Eγ, Iγ, γγ-, (fission fragment)γ-coin. 103,105Mo, 103Nb deduced high-spin levels, J, π, configurations. 103Nb levels deduced g factors. Gammasphere, Chico arrays.

doi: 10.1103/PhysRevC.65.064325
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2002ST12      Phys.Rev.Lett. 88, 142501 (2002)

F.S.Stephens, M.A.Deleplanque, I.Y.Lee, D.Ward, P.Fallon, M.Cromaz, R.M.Clark, R.M.Diamond, A.O.Macchiavelli, K.Vetter

Rotational Damping in Ytterbium Nuclei

NUCLEAR REACTIONS 124Sn(48Ca, 4n), (48Ca, 5n), (48Ca, 6n), E=215 MeV; measured Eγ, Iγ, γγ-coin. 166,167,168Yb deduced rotational damping widths.

doi: 10.1103/PhysRevLett.88.142501
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2002VE07      Eur.Phys.J. A 15, 265 (2002)

K.Vetter

Gamma-ray tracking: Utilizing new concepts in the detection of gamma-radiation

doi: 10.1140/epja/i2001-10265-1
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2002WA24      Phys.Rev. C66, 024317 (2002)

D.Ward, R.M.Diamond, W.J.Swiatecki, R.M.Clark, M.Cromaz, M.A.Deleplanque, P.Fallon, A.Goergen, G.J.Lane, I.Y.Lee, A.O.Macchiavelli, W.Myers, F.S.Stephens, C.E.Svensson, K.Vetter

Search for the Jacobi shape transition in rapidly rotating nuclei

NUCLEAR REACTIONS 50Ti, 64Ni, 96Zr, 124Sn(48Ca, xnypzα), E=195-215 MeV; measured Eγ, Iγ, γγ-coin, multiplicities; deduced quasicontinuum spectrum features, moment of inertia vs angular momentum, possible Jacobi shape transition. 91Nb, 108Cd, 140Nd, 168Yb; deduced collective E2 bump centroids. Gammasphere and 8PI arrays.

doi: 10.1103/PhysRevC.66.024317
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2001CL06      Phys.Rev.Lett. 87, 202502 (2001)

R.M.Clark, P.Fallon, A.Gorgen, M.Cromaz, M.A.Deleplanque, R.M.Diamond, G.J.Lane, I.Y.Lee, A.O.Macchiavelli, R.G.Ramos, F.S.Stephens, C.E.Svensson, K.Vetter, D.Ward, M.P.Carpenter, R.V.F.Janssens, R.Wadsworth

Very Extended Shapes in the A ∼ 110 Region

NUCLEAR REACTIONS 64Ni(48Ca, 4n), E=207 MeV; measured Eγ, Iγ, γγ-coin. 108Cd deduced superdeformed band transitions, quadrupole moments, deformation. Gammasphere array.

NUCLEAR STRUCTURE 36Ar, 60Zn, 82Sr, 91Tc, 108Cd, 132Ce, 152Dy, 192Hg, 236U; A=20-250; compiled, analyzed ground-state and superdeformed bands quadrupole moments.

doi: 10.1103/PhysRevLett.87.202502
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2001FO08      Phys.Rev.Lett. 87, 212501 (2001)

B.Fornal, R.Broda, K.H.Maier, J.Wrzesinski, G.J.Lane, M.Cromaz, A.O.Macchiavelli, R.M.Clark, K.Vetter, A.P.Byrne, G.D.Dracoulis, M.P.Carpenter, R.V.F.Janssens, I.Wiedenhoever, M.Rejmund, J.Blomqvist

Effective Charge of the πh11/2 Orbital and the Electric Field Gradient of Hg from the Yrast Structure of 206Hg

NUCLEAR REACTIONS 208Pb(238U, X)206Hg, E=1360 MeV; measured prompt and delayed Eγ, Iγ, γγ-coin. 206Hg deduced levels, J, π, configurations, B(E2), quadrupole moment, isomer T1/2, electric field gradient in Hg metal. Gammasphere array.

doi: 10.1103/PhysRevLett.87.212501
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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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2001KR08      Eur.Phys.J. A 10, 151 (2001)

R.Krucken, S.J.Asztalos, R.M.Clark, M.A.Deleplanque, R.M.Diamond, P.Fallon, I.Y.Lee, A.O.Macchiavelli, G.J.Schmid, F.S.Stephens, K.Vetter, J.-Y.Zhang

Spectroscopy of 112Pd using Heavy-Ion-Induced Fission

NUCLEAR REACTIONS 208Pb(18O, F), E=91 MeV; measured Eγ, Iγ, γγ-coin. 112Pd deduced high-spin levels, J, π, configurations. Gammasphere array. Total Routhian surface calculations.

doi: 10.1007/s100500170127
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2001LA09      Nucl.Phys. A682, 71c (2001)

G.J.Lane, R.Broda, B.Fornal, A.P.Byrne, G.D.Dracoulis, J.Blomqvist, R.M.Clark, M.Cromaz, M.A.Deleplanque, R.M.Diamond, P.Fallon, R.V.F.Janssens, I.Y.Lee, A.O.Macchiavelli, K.H.Maier, M.Rejmund, F.S.Stephens, C.E.Svensson, K.Vetter, D.Ward, I.Wiedenhover, J.Wrzesinski

Structure of Exotic Nuclei Near and Above 208Pb Populated via Deep-Inelastic Collisions

NUCLEAR REACTIONS 238U(208Pb, X)206Hg/210Pb/211Bi, E not given; measured prompt and delayed Eγ, Iγ, γγ-coin. 206Hg, 210Pb, 211Bi deduced levels, J, π, configurations. Gammasphere array.

doi: 10.1016/S0375-9474(00)00624-2
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2001LE37      Acta Phys.Pol. B32, 2499 (2001)

I.Y.Lee, R.M.Clark, D.Ward, M.Cromaz, M.A.Deleplanque, R.M.Diamond, P.Fallon, A.Gorgen, G.J.Lane, A.O.Macchiavelli, F.S.Stephens, C.E.Svensson, K.Vetter

Recent Results from Gammasphere

NUCLEAR REACTIONS 64Ni(48Ca, 4n), E=207 MeV; measured Eγ, Iγ, γγ-coin. 108Cd deduced superdeformed band. 50Ti, 64Ni, 96Zr, 124Sn(48Ca, X), E not given; measured Eγ, Iγ, fold. 98Mo, 112Cd, 144Nd, 172Yb deduced Eγ vs spin for compound nucleus decay. 51V(13C, X), E=30 MeV/nucleon; measured Eγ, Iγ; deduced fragment yields. 48Ti, 42Ar deduced transitions. Gammasphere array.


2001NA13      Acta Phys.Pol. B32, 861 (2001)

P.J.Napiorkowski, J.Srebrny, T.Czosnyka, J.Gerl, Ch.Schlegel, H.-J.Wollersheim, D.Cline, C.Y.Wu, R.Teng, K.Vetter, A.Macchiavelli, M.Devlin, J.DeBoer, J.Iwanicki, J.Kownacki, M.Loewe, M.Wurkner

Coulomb Excitation of the Kπ = 8- Isomeric Band in 178Hf

NUCLEAR REACTIONS 178Hf(136Xe, 136Xe'), E=650 MeV; measured Eγ, Iγ, (particle)γ-, γγ-coin following Coulomb excitation. 178Hf deduced transitions in isomeric band. Gammasphere, Chico arrays.


2001SV01      Nucl.Phys. A682, 1c (2001)

C.E.Svensson, A.O.Macchiavelli, A.Juodagalvis, A.Poves, I.Ragnarsson, S.Aberg, D.E.Appelbe, R.A.E.Austin, C.Baktash, G.C.Ball, M.P.Carpenter, E.Caurier, R.M.Clark, M.Cromaz, M.A.Deleplanque, R.M.Diamond, P.Fallon, M.Furlotti, A.Galindo-Uribarri, R.V.F.Janssens, G.J.Lane, I.Y.Lee, M.Lipoglavsek, F.Nowacki, S.D.Paul, D.C.Radford, D.G.Sarantites, D.Seweryniak, F.S.Stephens, V.Tomov, K.Vetter, D.Ward, C.H.Yu

Collective Rotational Motion in the N = Z Nucleus 36Ar

NUCLEAR REACTIONS 24Mg(20Ne, 2α), E=80 MeV; measured Eγ, Iγ, (charged particle)γ-, γγ-coin, DSA. 36Ar deduced high-spin levels, J, π, T1/2, superdeformed band. Gammasphere, Microball arrays. Shell model and cranked mean-field calculations.

doi: 10.1016/S0375-9474(00)00615-1
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2001SV02      Phys.Rev. C63, 061301 (2001)

C.E.Svensson, A.O.Macchiavelli, A.Juodagalvis, A.Poves, I.Ragnarsson, S.Aberg, D.E.Appelbe, R.A.E.Austin, G.C.Ball, M.P.Carpenter, E.Caurier, R.M.Clark, M.Cromaz, M.A.Deleplanque, R.M.Diamond, P.Fallon, R.V.F.Janssens, G.J.Lane, I.Y.Lee, F.Nowacki, D.G.Sarantites, F.S.Stephens, K.Vetter, D.Ward

Lifetimes of Superdeformed Rotational States in 36Ar

NUCLEAR REACTIONS 24Mg(20Ne, 2α), E=80 MeV; measured Eγ, Iγ, γγ-, (charged particle)γ-coin, DSA. 36Ar deduced high-spin levels, superdeformed band J, π, T1/2, B(E2), quadrupole deformation. Gammasphere, Microball arrays. Comparison with cranked mean-field and large-scale shell model calculations.

doi: 10.1103/PhysRevC.63.061301
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2001SV03      Acta Phys.Pol. B32, 2413 (2001)

C.E.Svensson, A.O.Macchiavelli, A.Juodagalvis, A.Poves, I.Ragnarsson, S.Aberg, D.E.Appelbe, R.A.E.Austin, C.Baktash, G.C.Ball, M.P.Carpenter, E.Caurier, R.M.Clark, M.Cromaz, M.A.Deleplanque, R.M.Diamond, P.Fallon, M.Furlotti, A.Galindo-Uribarri, R.V.F.Janssens, G.J.Lane, I.Y.Lee, M.Lipoglavsek, F.Nowacki, S.D.Paul, D.C.Radford, D.G.Sarantites, D.Seweryniak, F.S.Stephens, V.Tomov, K.Vetter, D.Ward, C.H.Yu

Fast Rotation of the N = Z Nucleus 36Ar

NUCLEAR REACTIONS 24Mg(20Ne, 2α), E=80 MeV; measured Eγ, Iγ, γγ-, (charged particle)γ-coin, DSA. 36Ar deduced high-spin levels, J, π, configurations, deformation, band termination. Gammasphere, Microball arrays. Cranked mean-field calculations.


2001VE03      Nucl.Phys. A682, 286c (2001)

K.Vetter

GRETA: The proof-of-principle for gamma-ray tracking

doi: 10.1016/S0375-9474(00)00652-7
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2001WA02      Phys.Rev. C63, 014301 (2001)

D.Ward, C.E.Svensson, I.Ragnarsson, C.Baktash, M.A.Bentley, J.A.Cameron, M.P.Carpenter, R.M.Clark, M.Cromaz, M.A.Deleplanque, M.Devlin, R.M.Diamond, P.Fallon, S.Flibotte, A.Galindo-Uribarri, D.S.Haslip, R.V.F.Janssens, T.Lampman, G.J.Lane, I.Y.Lee, F.Lerma, A.O.Macchiavelli, S.D.Paul, D.Radford, D.Rudolph, D.G.Sarantites, B.Schaly, D.Seweryniak, F.S.Stephens, O.Thelen, K.Vetter, J.C.Waddington, J.N.Wilson, C.-H.Yu

Band Structure of 68Ge

NUCLEAR REACTIONS 40Ca(32S, 4p), E=134 MeV; measured Eγ, Iγ, γγ-, (charged particle)γ-coin. 68Ge deduced high-spin levels, J, π, configurations, superdeformed band, terminating bands. Gammasphere, Microball arrays. Cranked mean-field calculations.

doi: 10.1103/PhysRevC.63.014301
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2001WU05      Phys.Rev. C64, 064317 (2001)

C.Y.Wu, D.Cline, M.W.Simon, G.A.Davis, R.Teng, A.O.Macchiavelli, K.Vetter

Electromagnetic Properties of the Rotationally Aligned Band in 162Dy

NUCLEAR REACTIONS 118Sn(162Dy, 162Dy'), (164Dy, 164Dy'), E=780, 790 MeV; measured Eγ, Iγ, γγ-, (particle)γ-coin. 162,164Dy deduced high-spin levels, J, π, B(M1), B(E2), deformation. Gammasphere, Chico arrays.

doi: 10.1103/PhysRevC.64.064317
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2000AS01      Phys.Rev. C61, 014602 (2000)

S.J.Asztalos, I.Y.Lee, K.Vetter, B.Cederwall, R.M.Clark, M.A.Deleplanque, R.M.Diamond, P.Fallon, K.Jing, L.Phair, A.O.Macchiavelli, F.S.Stephens, G.J.Wozniak, L.A.Bernstein, D.P.McNabb, P.F.Hua, D.G.Sarantites, J.X.Saladin, C.-H.Yu, J.A.Cizewski

Isotopic Yields of Neutron-Rich Nuclei from Deep-Inelastic Reactions

NUCLEAR REACTIONS 176Yb(154Sm, X), E=949 MeV; 208Pb(154Sm, X), E=1 GeV; measured Eγ, Iγ, γγ-coin; deduced projectile-like-, target-like-fragments isotopic yields, neutron multiplicity. Gammasphere array. Comparison with previous results.

doi: 10.1103/PhysRevC.61.014602
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2000CH04      Phys.Rev. C61, 034318 (2000)

C.J.Chiara, S.J.Asztalos, B.Busse, R.M.Clark, M.Cromaz, M.A.Deleplanque, R.M.Diamond, P.Fallon, D.B.Fossan, D.G.Jenkins, S.Juutinen, N.S.Kelsall, R.Krucken, G.J.Lane, I.Y.Lee, A.O.Macchiavelli, R.W.MacLeod, G.Schmid, J.M.Sears, J.F.Smith, F.S.Stephens, K.Vetter, R.Wadsworth, S.Frauendorf

Shears Mechanism in 109Cd

NUCLEAR REACTIONS 96Zr(18O, 5n), E=70 MeV; measured Eγ, Iγ, γγ-coin, DSA. 109Cd deduced high-spin levels, J, π, T1/2, B(E2), B(M1), configurations, shears mechanism. Gammasphere array. Tilted-axis-cranking analysis.

doi: 10.1103/PhysRevC.61.034318
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2000CL01      Phys.Rev. C61, 044311 (2000)

R.M.Clark, J.N.Wilson, D.Appelbe, M.P.Carpenter, C.J.Chiara, M.Cromaz, M.A.Deleplanque, M.Devlin, R.M.Diamond, P.Fallon, D.B.Fossan, R.V.F.Janssens, D.G.Jenkins, N.Kelsall, T.Koike, D.R.LaFosse, G.J.Lane, I.Y.Lee, A.O.Macchiavelli, D.G.Sarantites, D.Seweryniak, K.Starosta, F.S.Stephens, C.E.Svensson, K.Vetter, R.Wadsworth, J.C.Waddington, D.Ward, I.Wiedenhover, B.A.Brown

Yrast and Near-Yrast Excitations Up to High Spin in 48100Cd52

NUCLEAR REACTIONS 46Ti(58Ni, 2n2p), E=215 MeV; measured Eγ, Iγ, γγ-, (charged particle)γ-, (neutron)γ-coin. 100Cd deduced levels, J, π. Gammasphere, Microball arrays. Comparison with shell-model calculations.

doi: 10.1103/PhysRevC.61.044311
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2000FO10      Phys.Rev. C61, 064326 (2000)

N.Fotiades, J.A.Cizewski, R.Krucken, K.Y.Ding, D.E.Archer, J.A.Becker, L.A.Bernstein, K.Hauschild, D.P.McNabb, W.Younes, S.J.Asztalos, R.M.Clark, M.A.Deleplanque, R.M.Diamond, P.Fallon, I.Y.Lee, A.O.Macchiavelli, G.J.Schmid, F.S.Stephens, K.Vetter

Observation of νh11/2 Sequences in Odd A ∼ 110 Nuclei

NUCLEAR REACTIONS 173Yb(24Mg, F), E=134.5 MeV; 208Pb(18O, F), E=91 MeV; 176Yb(23Na, F), E=129 MeV; measured Eγ, Iγ, γγ-coin following compound nucleus fission. 107Ru, 113,115,117,119Cd deduced high-spin levels, J, π, configurations. Gammasphere array.

doi: 10.1103/PhysRevC.61.064326
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2000GO47      Eur.Phys.J. A 9, 161 (2000)

A.Gorgen, H.Hubel, D.Ward, S.Chmel, R.M.Clark, M.Cromaz, R.M.Diamond, P.Fallon, K.Hauschild, G.J.Lane, I.Y.Lee, A.O.Macchiavelli, K.Vetter

Search for Magnetic Rotation in 202Pb and 203Pb

NUCLEAR REACTIONS 198Pt(9Be, 4n), (9Be, 5n), E=60 MeV; measured Eγ, Iγ, γγ-coin. 202Pb deduced high-spin levels, J, π, δ, magnetic rotation. 203Pb deduced transitions.

doi: 10.1007/s100500070032
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2000KE01      Phys.Rev. C61, 011301 (2000)

N.S.Kelsall, R.Wadsworth, S.J.Asztalos, B.Busse, C.J.Chiara, R.M.Clark, M.A.Deleplanque, R.M.Diamond, P.Fallon, D.B.Fossan, D.G.Jenkins, S.Juutinen, R.Krucken, G.J.Lane, I.Y.Lee, A.O.Macchiavelli, C.M.Parry, G.J.Schmid, J.M.Sears, J.F.Smith, F.S.Stephens, K.Vetter, S.G.Frauendorf

Evidence for Shears Bands in 108Cd

NUCLEAR REACTIONS 96Zr(16O, 4n), E=72 MeV; measured Eγ, Iγ, γγ-coin, DSA. 108Cd deduced high-spin levels, J, π, B(M1), configurations, shears bands. Gammasphere array.

doi: 10.1103/PhysRevC.61.011301
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2000MA13      Phys.Rev. C61, 041303 (2000)

A.O.Macchiavelli, P.Fallon, R.M.Clark, M.Cromaz, M.A.Deleplanque, R.M.Diamond, G.J.Lane, I.Y.Lee, F.S.Stephens, C.E.Svensson, K.Vetter, D.Ward

Is There np Pairing in N = Z Nuclei ?

NUCLEAR STRUCTURE A=10-64; analyzed N=Z nuclei binding energies; deduced isovector np pairing, no deuteron-like pair correlations.

doi: 10.1103/PhysRevC.61.041303
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2000MA31      Phys.Lett. 480B, 1 (2000)

A.O.Macchiavelli, P.Fallon, R.M.Clark, M.Cromaz, M.A.Deleplanque, R.M.Diamond, G.J.Lane, I.Y.Lee, F.S.Stephens, C.E.Svensson, K.Vetter, D.Ward

Collective T = 0 Pairing in N = Z Nuclei ? Pairing Vibrations Around 56Ni Revisited

NUCLEAR STRUCTURE 52Cr, 52Mn, 52,54Fe, 54,56,58,60Ni, 58,60Cu, 58,60Zn; analyzed pairing-vibrational levels; deduced collectivity in isovector vibrations, no collectivity in isoscalar vibrations.

doi: 10.1016/S0370-2693(00)00381-6
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2000RE05      Phys.Rev.Lett. 84, 3542 (2000)

P.Reiter, T.L.Khoo, T.Lauritsen, C.J.Lister, D.Seweryniak, A.A.Sonzogni, I.Ahmad, N.Amzal, P.Bhattacharyya, P.A.Butler, M.P.Carpenter, A.J.Chewter, J.A.Cizewski, C.N.Davids, K.Y.Ding, N.Fotiades, J.P.Greene, P.T.Greenlees, A.Heinz, W.F.Henning, R.-D.Herzberg, R.V.F.Janssens, G.D.Jones, H.Kankaanpaa, F.G.Kondev, W.Korten, M.Leino, S.Siem, J.Uusitalo, K.Vetter, I.Wiedenhover

Entry Distribution, Fission Barrier, and Formation Mechanism of 102254No

NUCLEAR REACTIONS 208Pb(48Ca, 2n), E=215, 219 MeV; measured Eγ, Iγ, (recoil)γ, γγ-coin, γ multiplicity; deduced residual nucleus entry state spin and energy distribution. 254No deduced fission barrier features, shell correction effects.

doi: 10.1103/PhysRevLett.84.3542
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2000SV02      Phys.Rev.Lett. 85, 2693 (2000)

C.E.Svensson, A.O.Macchiavelli, A.Juodagalvis, A.Poves, I.Ragnarsson, S.Aberg, D.E.Appelbe, R.A.E.Austin, C.Baktash, G.C.Ball, M.P.Carpenter, E.Caurier, R.M.Clark, M.Cromaz, M.A.Deleplanque, R.M.Diamond, P.Fallon, M.Furlotti, A.Galindo-Uribarri, R.V.F.Janssens, G.J.Lane, I.Y.Lee, M.Lipoglavsek, F.Nowacki, S.D.Paul, D.C.Radford, D.G.Sarantites, D.Seweryniak, F.S.Stephens, V.Tomov, K.Vetter, D.Ward, C.H.Yu

Superdeformation in the N = Z Nucleus 36Ar: Experimental, deformed mean field, and spherical shell model descriptions

NUCLEAR REACTIONS 24Mg(20Ne, 2α), E=80 MeV; measured Eγ, Iγ, γγ-, (charged particle)γ-coin. 36Ar deduced high-spin levels, J, π, superdeformed band, configurations. Gammasphere, Microball arrays. Cranked mean-field calculations, shell model calculations.

doi: 10.1103/PhysRevLett.85.2693
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2000WA31      Phys.Scr. T88, 49 (2000)

R.Wadsworth, J.A.Cameron, R.M.Clark, C.J.Chiara, R.M.Diamond, M.A.Deleplanque, P.Fallon, D.B.Fossan, I.M.Hibbert, D.G.Jenkins, S.Juutinen, N.Kelsall, R.Krucken, G.J.Lane, G.J.Lane, I.Y.Lee, A.O.Macchiavelli, C.M.Parry, J.M.Sears, J.F.Smith, F.S.Stephens, K.Vetter, S.Frauendorf

Evidence for Magnetic Rotation in the Light Tin Region

NUCLEAR REACTIONS 54Fe(58Ni, 2pα), (58Ni, 4p), E=243 MeV; 96Zr(18O, 4n), E=70 MeV; measured Eγ, Iγ, γγ-coin, DSA. 106,108Sn, 110Cd deduced transitions T1/2, B(M1), B(E2), magnetic dipole bands, shears mechanism. Gammasphere array.

doi: 10.1238/Physica.Topical.088a00049
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2000WU01      Phys.Rev. C61, 021305 (2000)

C.Y.Wu, D.Cline, M.W.Simon, R.Teng, K.Vetter, M.P.Carpenter, R.V.F.Janssens, I.Wiedenhover

Complex Band Interactions in 170Er

NUCLEAR REACTIONS 170Er(238U, 238U'), E=1358 MeV; measured Eγ, Iγ, γγ-, (particle)γ-coin following Coulomb excitation. 170Er deduced high-spin levels, J, π, vibrational bands features. 170Er(238U, 237U), (238U, 236U), E=1358 MeV; measured Eγ, Iγ, γγ-, (particle)γ-coin; deduced relative yields. Gammasphere, Chico arrays.

doi: 10.1103/PhysRevC.61.021305
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1999AS05      Phys.Rev. C60, 044307 (1999)

S.J.Asztalos, I.Y.Lee, K.Vetter, B.Cederwall, R.M.Clark, M.A.Deleplanque, R.M.Diamond, P.Fallon, K.Jing, L.Phair, A.O.Macchiavelli, J.O.Rasmussen, F.S.Stephens, G.J.Wozniak, J.A.Becker, L.A.Bernstein, D.P.McNabb, P.F.Hua, D.G.Sarantites, J.X.Saladin, C.-H.Yu, J.A.Cizewski, R.Donangelo

Spin Yields of Neutron-Rich Nuclei from Deep Inelastic Reactions

NUCLEAR REACTIONS 176Yb(48Ca, X), 176Yb, 208Pb(154Sm, X), E ≈ 6 MeV/nucleon; measured Eγ, Iγ, γγ-, (fragment)γ-coin; deduced spin yield vs nucleon transfer, enhancement due to deep inelastic contributions. 172,173,174,175,176,177,178Yb, 173Tm, 152,153,154,155,156Sm deduced high-spin levels, J, π. Gammasphere, silicon strip detector.

doi: 10.1103/PhysRevC.60.044307
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1999CL03      Phys.Rev.Lett. 82, 3220 (1999)

R.M.Clark, S.J.Asztalos, B.Busse, C.J.Chiara, M.Cromaz, M.A.Deleplanque, R.M.Diamond, P.Fallon, D.B.Fossan, D.G.Jenkins, S.Juutinen, N.Kelsall, R.Krucken, G.J.Lane, I.Y.Lee, A.O.Macchiavelli, R.W.MacLeod, G.Schmid, J.M.Sears, J.F.Smith, F.S.Stephens, K.Vetter, R.Wadsworth, S.Frauendorf

Shears Mechanism in the A ∼ 110 Region

NUCLEAR REACTIONS 96Zr(18O, 4n), E=70 MeV; measured Eγ, Iγ, γγ-coin, DSA. 110Cd deduced transitions T1/2, B(M1), magnetic-rotational band. Tilted axis cranking analysis.

doi: 10.1103/PhysRevLett.82.3220
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1999DE29      Nucl.Instrum.Methods Phys.Res. A430, 292 (1999)

M.A.Deleplanque, I.Y.Lee, K.Vetter, G.J.Schmid, F.S.Stephens, R.M.Clark, R.M.Diamond, P.Fallon, A.O.Macchiavelli

GRETA: Utilizing New Concepts in γ-Ray Detection

doi: 10.1016/S0168-9002(99)00187-4
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1999FA13      Phys.Rev. C60, 044301 (1999)

P.Fallon, P.-H.Heenen, W.Satula, R.M.Clark, F.S.Stephens, M.A.Deleplanque, R.M.Diamond, I.Y.Lee, A.O.Macchiavelli, K.Vetter

Origin of Unit Alignment in Superdeformed Bands in A ≈ 190 Nuclei

NUCLEAR STRUCTURE 192,193,194,195,196Pb, 192,193,194,195Tl, 190,191,192,193,194Hg; analyzed identical superdeformed bands spin alignments, moments of inertia; deduced relative single-particle, core contributions. Cranked mean-field calculations.

doi: 10.1103/PhysRevC.60.044301
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1999GO21      Eur.Phys.J. A 6, 141 (1999)

A.Gorgen, H.Hubel, D.Ward, S.Chmel, R.M.Clark, M.Cromaz, R.M.Diamond, P.Fallon, K.Hauschild, G.J.Lane, I.Y.Lee, A.O.Macchiavelli, K.Vetter

Spectroscopy of 200Hg After Incomplete Fusion Reaction

NUCLEAR REACTIONS 198Pt(9Be, X)201Pb/202Pb/203Pb/199Hg/200Hg, E=60 MeV; measured Eγ, Iγ, γγ-coin; deduced yields, incomplete fusion mechanism. 200Hg deduced high-spin levels, J, π. Comparison with rotational bands in lighter even-A Hg isotopes.

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1999KR17      Phys.Rev. C60, 031302 (1999)

R.Krucken, S.J.Asztalos, R.M.Clark, M.A.Deleplanque, R.M.Diamond, P.Fallon, I.Y.Lee, A.O.Macchiavelli, G.J.Schmid, F.S.Stephens, K.Vetter, J.-Y.Zhang

νh11/2 Bands in 113Pd and 115Pd

NUCLEAR REACTIONS 208Pb(18O, F), E=91 MeV; measured Eγ, Iγ, γγ-coin. 113,115Pd deduced high-spin levels, possible J, π, configurations, deformation. Gammasphere array. Comparison with cranked Woods-Saxon calculations.

doi: 10.1103/PhysRevC.60.031302
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1999KR19      Eur.Phys.J. A 5, 367 (1999)

R.Krucken, Z.Wang, S.J.Asztalos, J.A.Becker, L.A.Bernstein, R.M.Clark, M.A.Deleplanque, R.M.Diamond, P.Fallon, N.Fotiades, K.Hauschild, I.Y.Lee, A.O.Macchiavelli, G.J.Schmid, F.S.Stephens, K.Vetter

Quadrupole Moments of Superdeformed Bands in 193Tl

NUCLEAR REACTIONS 176Yb(23Na, 6n), E=129 MeV; measured Eγ, Iγ(θ)γγ-coin, DSA. 193Tl deduced high-spin levels, J, π, superdeformed-band quadrupole moments, no linking transitions found. GAMMASPHERE array.

doi: 10.1007/s100500050298
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1999MA15      Phys.Lett. 450B, 1 (1999)

A.O.Macchiavelli, R.M.Clark, M.A.Deleplanque, R.M.Diamond, P.Fallon, I.Y.Lee, F.S.Stephens, K.Vetter

The Competition between the Shears Mechanism and Core Rotation in a Classical Particles-Plus-Rotor Model

doi: 10.1016/S0370-2693(99)00119-7
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1999RE02      Phys.Rev.Lett. 82, 509 (1999)

P.Reiter, T.L.Khoo, C.J.Lister, D.Seweryniak, I.Ahmad, M.Alcorta, M.P.Carpenter, J.A.Cizewski, C.N.Davids, G.Gervais, J.P.Greene, W.F.Henning, R.V.F.Janssens, T.Lauritsen, S.Siem, A.A.Sonzogni, D.Sullivan, J.Uusitalo, I.Wiedenhover, N.Amzal, P.A.Butler, A.J.Chewter, K.Y.Ding, N.Fotiades, J.D.Fox, P.T.Greenlees, R.-D.Herzberg, G.D.Jones, W.Korten, M.Leino, K.Vetter

Ground-State Band and Deformation of the Z = 102 Isotope 254No

NUCLEAR REACTIONS 208Pb(48Ca, 2n), E=215 MeV; measured Eγ, Iγ, γγ-, (recoil)γ-coin. 254No deduced levels, J, π, rotational band, deformation. Gammasphere array, recoil-decay tagging.

doi: 10.1103/PhysRevLett.82.509
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1999SC27      Nucl.Instrum.Methods Phys.Res. A430, 69 (1999); Erratum Nucl.Instrum.Methods Phys.Res. A434, 481 (1999)

G.J.Schmid, M.A.Deleplanque, I.Y.Lee, F.S.Stephens, K.Vetter, R.M.Clark, R.M.Diamond, P.Fallon, A.O.Macchiavelli, R.W.MacLeod

A γ-Ray Tracking Algorithm for the GRETA Spectrometer

doi: 10.1016/S0168-9002(99)00188-6
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1998BU03      Phys.Rev. C57, R1017 (1998)

B.C.Busse, P.Fallon, R.Krucken, D.Ackermann, I.Ahmad, S.J.Asztalos, D.J.Blumenthal, M.P.Carpenter, R.M.Clark, M.A.Deleplanque, R.M.Diamond, S.M.Fischer, F.Hannachi, R.V.F.Janssens, T.L.Khoo, A.Korichi, T.Lauritsen, I.Y.Lee, A.Lopez-Martens, A.O.Macchiavelli, R.W.MacLeod, E.F.Moore, D.Nisius, G.Schmid, D.Seweryniak, F.S.Stephens, K.Vetter

Lifetime Measurements of Yrast and Excited Superdeformed Bands in 192,193Hg

NUCLEAR REACTIONS 176Yb(22Ne, 5n), (22Ne, 6n), E=118 MeV; measured Eγ, Iγ, γγ-coin, DSA. 192,193Hg deduced superdeformed bands T1/2, average quadrupole moments, configurations.

doi: 10.1103/PhysRevC.57.R1017
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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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1998KR20      Phys.Rev. C58, R1876 (1998)

R.Krucken, R.M.Clark, A.Dewald, M.A.Deleplanque, R.M.Diamond, P.Fallon, K.Hauschild, I.Y.Lee, A.O.Macchiavelli, R.Peusquens, G.J.Schmid, F.S.Stephens, K.Vetter, P.von Brentano

Lifetimes Near the Bandhead of a Shears Band in 198Pb

NUCLEAR REACTIONS 154Sm(48Ca, 4n), E=210 MeV; measured Doppler-shifted Eγ, Iγ, γγ-coin. 198Pb deduced levels T1/2, B(M1), magnetic rotation, shears band. Recoil distance method. Tilted axis cranking model.

doi: 10.1103/PhysRevC.58.R1876
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1998MA09      Phys.Rev. C57, R1073 (1998)

A.O.Macchiavelli, R.M.Clark, P.Fallon, M.A.Deleplanque, R.M.Diamond, R.Krucken, I.Y.Lee, F.S.Stephens, S.Asztalos, K.Vetter

Semiclassical Description of the Shears Mechanism and the Role of Effective Interactions

NUCLEAR STRUCTURE 198,199Pb; analyzed shears bands B(M1), B(E2), effective g-factors vs shears angle; deduced residual proton-neutron interactions dependence. Semiclassical model.

doi: 10.1103/PhysRevC.57.R1073
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1998MA43      Phys.Rev. C58, R621 (1998)

A.O.Macchiavelli, R.M.Clark, M.A.Deleplanque, R.M.Diamond, P.Fallon, I.Y.Lee, F.S.Stephens, K.Vetter

Shears Mechanism and Particle-Vibration Coupling

NUCLEAR STRUCTURE 198,199Pb; analyzed shears bands; deduced particle-vibration coupling mechanism.

doi: 10.1103/PhysRevC.58.R621
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1998MA81      Phys.Rev. C58, 3746 (1998)

A.O.Macchiavelli, R.M.Clark, M.A.Deleplanque, R.M.Diamond, P.Fallon, I.Y.Lee, F.S.Stephens, K.Vetter

Rotational-Like Properties of the Shears Bands

NUCLEAR STRUCTURE 197Pb; analyzed shears band rotational properties. Interacting angular momentum vectors, effective P2 interaction.

doi: 10.1103/PhysRevC.58.3746
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1998SC44      Nucl.Instrum.Methods Phys.Res. A417, 95 (1998)

G.J.Schmid, A.O.Macchiavelli, S.J.Asztalos, R.M.Clark, M.A.Deleplanque, R.M.Diamond, P.Fallon, R.Kruecken, I.Y.Lee, R.W.MacLeod, F.S.Stephens, K.Vetter

Gamma-Ray Polarization Sensitivity of the Gammasphere Segmented Germanium Detectors

NUCLEAR REACTIONS 24Mg, 56Fe, 109Ag(p, p'γ), E ≈ 2.5 MeV; measured Eγ, Iγ(θ); deduced detectors polarization sensitivity. 176Yb(26Mg, 5n), E=135 MeV; measured Eγ, Iγ(θ), γγ-coin, γ polarization. 197Pb deduced high-spin levels π, transitions multipolarities. Gammasphere.

doi: 10.1016/S0168-9002(98)00624-X
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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
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1998VE04      Phys.Rev. C58, R2631 (1998)

K.Vetter, A.O.Macchiavelli, D.Cline, H.Amro, S.J.Asztalos, B.C.Busse, R.M.Clark, M.A.Deleplanque, R.M.Diamond, P.Fallon, R.Gray, R.V.F.Janssens, R.Krucken, I.Y.Lee, R.W.MacLeod, E.F.Moore, G.J.Schmid, M.W.Simon, F.S.Stephens, C.Y.Wu

Fragmentation of the Two-Phonon Octupole Vibrational States in 208Pb

NUCLEAR REACTIONS 208Pb(136Xe, 136Xe'), E=650 MeV; measured Eγ, Iγ, γγ-, (particle)γ-coin, γ-ray yields vs projectile scattering angle following Coulomb excitation. 208Pb deduced transition B(E3), fragmentation of two-phonon octupole vibrational strength. Gammasphere, Chico detector arrays.

doi: 10.1103/PhysRevC.58.R2631
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1998WU04      Phys.Rev. C57, 3466 (1998)

C.Y.Wu, M.W.Simon, D.Cline, G.A.Davis, A.O.Macchiavelli, K.Vetter

Production and Spectroscopy of the Neutron-Rich Nucleus 166Dy

NUCLEAR REACTIONS 118Sn(164Dy, 166Dy), E=790 MeV; 118Sn(162Dy, 164Dy), E=780 MeV; measured Eγ, Iγ(θ), σ(θ), (recoil)γ-coin. 164,166Dy deduced high-spin levels, J, π.

doi: 10.1103/PhysRevC.57.3466
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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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1997DI05      Z.Phys. A358, 11 (1997)

E.Ditzel, J.M.Hoogduin, H.Backe, J.Baumann, F.W.N.de Boer, H.Bokemeyer, M.Debowski, R.Ganz, J.Gerl, T.Happ, M.Kaspar, J.van Klinken, T.Kroll, R.Kulessa, I.Peter, P.Salabura, H.Schaffner, S.Schremmer, K.Vetter, H.J.Wollersheim, H.Xie

Absence of E0 Transitions Around 1.8 MeV After Collisions of 238U with 181Ta

NUCLEAR REACTIONS 181Ta(238U, X), E=6.0 MeV/nucleon; measured e- spectra, e-(recoil)-coin. 181Ta, 238U deduced σ upper limits for E0 decays. Mini-orange spectrometers, PPAC, Doppler-corrected e- spectra.

doi: 10.1007/s002180050270
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1997FA04      Phys.Rev. C55, R999 (1997)

P.Fallon, F.S.Stephens, S.Asztalos, B.Busse, R.M.Clark, M.A.Deleplanque, R.M.Diamond, R.Krucken, I.Y.Lee, A.O.Macchiavelli, R.W.MacLeod, G.Schmid, K.Vetter, T.Nakatsukasa

Octupole Vibrations and Signature Splitting in Even Mass Hg Superdeformed Bands

NUCLEAR STRUCTURE 190,192,194Hg; analyzed superdeformed bands octupole characteristics.

doi: 10.1103/PhysRevC.55.R999
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1997HA01      Phys.Rev. C55, 148 (1997)

G.Hackman, R.Krucken, R.V.F.Janssens, M.A.Deleplanque, M.P.Carpenter, D.Ackermann, I.Ahmad, H.Amro, S.Asztalos, D.J.Blumenthal, R.M.Clark, R.M.Diamond, P.Fallon, S.M.Fischer, B.Herskind, T.L.Khoo, T.Lauritsen, I.-Y.Lee, R.W.MacLeod, A.O.Macchiavelli, D.Nisius, G.J.Schmid, F.S.Stephens, K.Vetter, R.Wyss

Structure of Superdeformed Bands in 195Hg

NUCLEAR REACTIONS 150Nd(48Ca, xn), E=201 MeV; measured Eγ, γγγ-coin, Iγ. 195Hg deduced high-spin levels, J, π, 4 superdeformed bands, quasiparticle alignments, configurations.

doi: 10.1103/PhysRevC.55.148
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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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1997KR03      Phys.Rev. C55, R1625 (1997)

R.Krucken, S.J.Asztalos, J.A.Becker, B.Busse, R.M.Clark, M.A.Deleplanque, A.Dewald, R.M.Diamond, P.Fallon, K.Hauschild, I.Y.Lee, A.O.Macchiavelli, R.W.MacLeod, R.Peusquens, G.J.Schmid, F.S.Stephens, K.Vetter, P.von Brentano

Decay Out of the Superdeformed Band in 194Pb: Electromagnetic properties

NUCLEAR REACTIONS 164Dy(34S, 4n), E=166 MeV; measured γγγ-coin, Eγ, recoil distance Doppler shift. 194Pb deduced superdeformed states T1/2, decay features, B(λ), transition quadrupole moment, superdeformed, normal deformed states interaction related features.

doi: 10.1103/PhysRevC.55.R1625
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1997VE05      Phys.Rev. C56, 2316 (1997)

K.Vetter, A.O.Macchiavelli, S.J.Asztalos, R.M.Clark, M.A.Deleplanque, R.M.Diamond, P.Fallon, R.Krucken, I.Y.Lee, R.W.MacLeod, G.J.Schmid, F.S.Stephens

Population and Detection of Two-Phonon Octupole Vibrational States in 208Pb

NUCLEAR REACTIONS 208Pb(154Sm, 154Sm'), E=1 GeV; measured Eγ, Iγ, γγ-, (particle)γγ-coin. 208Pb deduced no evidence for two-phonon octupole vibration.

doi: 10.1103/PhysRevC.56.2316
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1997WI19      Phys.Rev. C56, 2502 (1997)

J.N.Wilson, S.J.Asztalos, R.A.Austin, B.Busse, R.M.Clark, M.A.Deleplanque, R.M.Diamond, P.Fallon, S.Flibotte, G.Gervais, D.S.Haslip, I.Y.Lee, R.Kruecken, A.O.Macchiavelli, R.W.MacLeod, J.M.Nieminen, G.J.Schmid, F.S.Stephens, O.Stezowski, C.E.Svensson, K.Vetter, J.C.Waddington

Search for Hyperdeformation in 168Yb

NUCLEAR REACTIONS 124Sn(48Ca, xnypzα)165Yb/166Yb/167Yb/168Yb/169Yb/167Tm/163Er/164Er, E=215 MeV; measured Eγ, Iγ, γγ-coin, relative yields. 168Yb deduced no evidence for hyperdeformed states. Monte Carlo simulation, observational sensitivity determined.

doi: 10.1103/PhysRevC.56.2502
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1996KR13      Phys.Rev. C54, R2109 (1996)

R.Krucken, G.Hackman, M.A.Deleplanque, R.V.F.Janssens, I.Y.Lee, D.Ackermann, I.Ahmad, H.Amro, S.Asztalos, D.J.Blumenthal, M.P.Carpenter, R.M.Clark, R.M.Diamond, P.Fallon, S.M.Fischer, B.Herskind, T.L.Khoo, T.Lauritsen, A.O.Macchiavelli, R.W.MacLeod, D.Nisius, G.J.Schmid, F.S.Stephens, K.Vetter

Test of ΔI = 2 Staggering in the Superdeformed Bands of 194Hg

NUCLEAR REACTIONS 150Nd(48Ca, 4n), E=201 MeV; measured Eγ, Iγ, γγγ-, multifold-coin. 194Hg deduced levels, J, π, superdeformed band properties.

doi: 10.1103/PhysRevC.54.R2109
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1996LU07      Z.Phys. A355, 377 (1996)

E.Lubkiewicz, H.J.Wollersheim, R.Kulessa, Ch.Briancon, W.Bruchle, O.Constantinescu, M.Debowski, E.Ditzel, H.Folger, J.Gerl, F.Hannachi, T.Happ, M.Hussonnois, E.Jager, S.Karamyan, M.Kaspar, Th.Kroll, Yu.Ts.Oganessian, I.Peter, H.Schaffner, S.Schremmer, R.Schubert, N.Trautmann, K.Vetter, G.Zauner

Coulomb Excitation of the K(π) = 16+ Rotational Band in 178Hf

NUCLEAR REACTIONS 176,177,179,178Hf(208Pb, 208Pb'), E=4.77 MeV/nucleon; measured Eγ, Iγ, (particle)(particle)γ-coin following Coulomb excitation. 178Hf deduced level, J, π, intrinsic quadrupole moment. Rigid rotor model. Stable Hf targets, 178Hf target in a high-spin isomeric state.

doi: 10.1007/s002180050125
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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
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1993CU03      Z.Phys. A345, 1 (1993)

J.Cub, M.Bussas, K.-H.Speidel, W.Karle, U.Knopp, H.Busch, H.-J.Wollersheim, J.Gerl, K.Vetter, C.Ender, F.Kock, J.Gerber, F.Hagelberg

Transient Field Measurements on 32S(2+1) Ions in Gd at the 1s Electron Bohr Velocity

NUCLEAR REACTIONS Gd(32S, 32S'), E=260 MeV; measured γ(particle)(θ, φ) following Coulomb excitation; deduced 32S(2+) ions transient field in Gd, electric field gradient.

doi: 10.1007/BF01290332
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1993XI02      Phys.Rev. C48, 2517 (1993)

H.Xie, Ch.Ender, J.Gerl, Th.Hartlein, F.Kock, Th.Kroll, P.Reiter, D.Schwalm, P.Thirolf, K.Vetter, A.Wieswesser, H.J.Wollersheim

Coulomb Excitation of the K(π) = 8- Isomer in 178Hf

NUCLEAR REACTIONS, ICPND 178Hf(130Te, 130Te'), E=560, 590, 620 MeV; measured Eγ, Iγ, γγ-coin, γγ(t) following Coulomb excitation; deduced σ(E) for 178mHf production. Crystal ball.

doi: 10.1103/PhysRevC.48.2517
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1992CU04      Nucl.Phys. A549, 304 (1992)

J.Cub, U.Knopp, K.-H.Speidel, H.Busch, S.Kremeyer, H.-J.Wollersheim, N.Martin, X.Hong, K.Vetter, N.Gollwitzer, A.I.Levon, A.Booten

Transient Field Measurements on 40Ar Ions in Gd at the 1s Electron Bohr Velocity and the g-Factor of the 2+ State at 1.461 MeV

NUCLEAR REACTIONS 208Pb(40Ar, 40Ar'), E=12.5 MeV/nucleon; measured γ(θ, H) in polarized Gd, (particle)γ-coin, Coulomb excitation. 40Ar level deduced g. Multilayered targets.

doi: 10.1016/0375-9474(92)90045-L
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