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NSR database version of April 27, 2024.

Search: Author = J.K.Johansson

Found 17 matches.

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1997PO02      Phys.Rev. C55, 1175 (1997)

D.G.Popescu, J.C.Waddington, J.A.Cameron, J.K.Johansson, N.C.Schmeing, W.Schmitz, M.P.Carpenter, V.P.Janzen, J.Nyberg, L.L.Riedinger, H.Hubel, G.Kajrys, S.Monaro, S.Pilotte, C.Bourgeois, N.Perrin, H.Sergolle, D.Hojman, A.Korichi

High-Spin States and Band Structures in ¹⁸²Pt

NUCLEAR REACTIONS ¹⁷⁰Yb(¹⁶O, 4n), E=95 MeV; ¹⁶²Dy(²⁴Mg, 4n), E=129 MeV; ¹⁶³Dy(²⁴Mg, 5n), E=129 MeV; measured Eγ, Iγ, γγ-coin, DCO ratios. ¹⁸²Pt deduced high-spin levels, J, π, δ, B(λ) ratios. Enriched targets, Compton-suppressed hyperpure Ge detector array, 4π BGO ball. Cranked shell model routhians, total routhian surfaces.

doi: 10.1103/PhysRevC.55.1175
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1992JA01      Phys.Rev. C45, 613 (1992)

V.P.Janzen, Z.-M.Liu, M.P.Carpenter, L.H.Courtney, H.-Q.Jin, A.J.Larabee, L.L.Riedinger, J.K.Johansson, D.G.Popescu, J.C.Waddington, S.Monaro, S.Pilotte, F.Donau

Prolate and Oblate Band Structures in Odd-Odd ^186,188Au

NUCLEAR REACTIONS ^171,173Yb(¹⁹F, 4n), E=93-94 MeV; measured γγ-coin, γ(θ), γγ(t), Iγ. ^186,188Au deduced levels, J, π, T_1/2, rotational bands, configurations, B(λ) ratios.

doi: 10.1103/PhysRevC.45.613
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1992RA17      Nucl.Phys. A545, 665 (1992)

D.C.Radford, H.R.Andrews, G.C.Ball, D.Horn, D.Ward, F.Banville, S.Flibotte, S.Monaro, S.Pilotte, P.Taras, J.K.Johansson, D.Tucker, J.C.Waddington, M.A.Riley, G.B.Hagemann, I.Hamamoto

Multiple Band Structure and Band Termination in ¹⁵⁷Ho Towards Complete High-Spin Spectroscopy

NUCLEAR REACTIONS ¹²⁴Sn(³⁷Cl, 4n), E=155, 165 MeV; measured Eγ, γγ-coin, Iγ(θ, φ). ¹⁵⁷Ho deduced levels, Iγ, J, π, rotational band characteristics, band-mixing interaction strengths.

doi: 10.1016/0375-9474(92)90298-X
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1992WA07      Nucl.Phys. A539, 547 (1992)

D.Ward, H.R.Andrews, V.P.Janzen, D.C.Radford, J.K.Johansson, D.Prevost, J.C.Waddington, A.Galindo-Uribarri, T.E.Drake

Gamma-Ray Spectroscopy of ¹²⁷Ba at Moderate Spins

NUCLEAR REACTIONS ¹¹⁷Sn(¹³C, 3n), E=60 MeV; measured Eγ, Iγ, γγ-coin, DCO ratios. ¹²⁷Ba deduced levels, J, δ. Enriched targets, Compton-suppressed hyperpure Ge detector array, 4π-bismuth germanate ball. Cranked-shell model calculations, nuclear triaxial shapes.

doi: 10.1016/0375-9474(92)90293-S
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1991CH40      Phys.Rev.Lett. 67, 2950 (1991)

P.Chowdhury, C.J.Lister, D.Vretenar, Ch.Winter, V.P.Janzen, H.R.Andrews, D.J.Blumenthal, B.Crowell, T.Drake, P.J.Ennis, A.Galindo-Uribarri, D.Horn, J.K.Johansson, A.Omar, S.Pilotte, D.Prevost, D.Radford, J.C.Waddington, D.Ward

Large B(M1) Staggering at High Spins in ⁸⁶Zr: Broken boson pairs in the four-quasiparticle regime

NUCLEAR REACTIONS ⁶⁰Ni(³⁰Si, 2n2p), E=135 MeV; measured DSA, γγ energy correlations, γγ-coin, γγ(θ). ⁸⁶Zr deduced levels, J, π, B(λ), T_1/2, band structure. Interacting boson model, broken pair approximation.

doi: 10.1103/PhysRevLett.67.2950
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1991WA20      Nucl.Phys. A529, 315 (1991)

D.Ward, V.P.Janzen, H.R.Andrews, D.C.Radford, G.C.Ball, D.Horn, J.C.Waddington, J.K.Johansson, F.Banville, J.Gascon, S.Monaro, N.Nadon, S.Pilotte, D.Prevost, P.Taras, R.Wyss

Gamma-Ray Spectroscopy of ¹²⁶Ba

NUCLEAR REACTIONS ⁹⁶Zr(³⁴S, 4n), E=155 MeV; ¹¹⁶Sn(¹³C, 3n), E=56 MeV; measured Eγ, Iγ, γγ-coin, Iγ-spin orientation correlation, DCO ratios. ¹²⁶Ba deduced levels, J, δ. Enriched targets, Compton-suppressed hyperpure Ge detector array, 4π-bismuth germanate ball. Cranked shell model calculations, total routhian surface calculations.

doi: 10.1016/0375-9474(91)90798-B
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1990CA22      Nucl.Phys. A513, 125 (1990)

M.P.Carpenter, C.R.Bingham, L.H.Courtney, V.P.Janzen, A.J.Larabee, Z.-M.Liu, L.L.Riedinger, W.Schmitz, R.Bengtsson, T.Bengtsson, W.Nazarewicz, J.-Y.Zhang, J.K.Johansson, D.G.Popescu, J.C.Waddington, C.Baktash, M.L.Halbert, N.R.Johnson, I.Y.Lee, Y.S.Schutz, J.Nyberg, A.Johnson, R.Wyss, J.Dubuc, G.Kajrys, S.Monaro, S.Pilotte, K.Honkanen, D.G.Sarantites, D.R.Haenni

Alignment Processes and Shape Variation in ¹⁸⁴Pt

NUCLEAR REACTIONS ¹⁵⁴Sm(³⁴S, 4n), E=163 MeV; ¹⁷²Yb(¹⁶O, 4n), E=91 MeV; measured Eγ, Iγ, γ(θ), γγ-coin. ¹⁸⁴Pt deduced levels, J, π, γ-branching. Enriched targets, array of Compton-suppression Ge detectors. Total routhian surface calculations.

doi: 10.1016/0375-9474(90)90346-N
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1990HA31      Phys.Rev. C42, R1817 (1990)

B.Haas, D.Ward, H.R.Andrews, G.C.Ball, T.E.Drake, S.Flibotte, A.Galindo-Uribarri, V.P.Janzen, J.K.Johansson, H.Kluge, J.Kuehner, A.Omar, S.Pilotte, D.Prevost, J.Rodriguez, D.C.Radford, P.Taras, J.P.Vivien, J.C.Waddington, S.Aberg

Observation of Excited Proton and Neutron Configurations in the Superdeformed ¹⁴⁹Gd Nucleus

NUCLEAR REACTIONS ¹²⁴Sn(³⁰Si, 5n), E=155 MeV; ¹²⁴Sn(³¹P, 5n), E=156 MeV; measured γ-spectra, γγ-coin. ¹⁴⁹Gd deduced levels, J, π, superdeformed band structure.

doi: 10.1103/PhysRevC.42.R1817
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1990PI11      Nucl.Phys. A514, 545 (1990)

S.Pilotte, S.Flibotte, S.Monaro, N.Nadon, D.Prevost, P.Taras, H.R.Andrews, D.Horn, V.P.Janzen, D.C.Radford, D.Ward, J.K.Johansson, J.C.Waddington, T.E.Drake, A.Galindo-Uribarri, R.Wyss

Rotational Bands and Shape Changes in ¹²⁴Ba

NUCLEAR REACTIONS ⁹⁴Zr(³⁴S, 4n), E=145 MeV; ¹¹⁰Cd(¹⁶O, 2n), E=60 MeV; measured Eγ, Iγ, γγ-coin, Iγ(θ), oriented nuclei. ¹²⁴Ba deduced levels, J, π, δ. Enriched target, Compton-suppressed Ge detector array, 4π bismuth germanate ball. Total routhian surface calculations, cranked shell-model.

doi: 10.1016/0375-9474(90)90155-F
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1989JA02      Phys.Rev. C39, 2050 (1989)

V.J.Janzen, M.P.Carpenter, L.L.Riedinger, W.Schmitz, D.G.Popescu, J.A.Cameron, J.K.Johansson, D.D.Rajnauth, J.C.Waddington, G.Kajrys, S.Monaro, S.Pilotte

Rotational Bands and Band Crossings in ¹¹⁹Xe

NUCLEAR REACTIONS ⁹⁵Mo(²⁷Al, 2np), E=105 MeV; measured Eγ, Iγ, γγ-coin, γ(θ). ¹¹⁹Xe deduced levels, J, π, B(λ) ratios. Enriched target, Ge detectors. Cranked shell model calculations.

doi: 10.1103/PhysRevC.39.2050
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1989JO02      Phys.Rev. C40, 132 (1989)

J.K.Johansson, D.G.Popescu, D.D.Rajnauth, J.C.Waddington, M.P.Carpenter, L.H.Courtney, V.P.Janzen, A.J.Larabee, Z.M.Liu, L.L.Riedinger

Shape Coexistence in ¹⁸⁷Au

NUCLEAR REACTIONS ¹⁷²Yb(¹⁹F, 4n), E=95 MeV; measured γγ-coin, γ(θ), γγ(t). ¹⁸⁷Au deduced levels, J, π, T_1/2, band structure, shape.

doi: 10.1103/PhysRevC.40.132
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1989JO04      Phys.Rev.Lett. 63, 2200 (1989)

J.K.Johansson, H.R.Andrews, T.Bengtsson, A.Djaafri, T.E.Drake, S.Flibotte, A.Galindo-Uribarri, D.Horn, V.P.Janzen, J.A.Kuehner, S.Monaro, N.Nadon, S.Pilotte, D.Prevost, D.C.Radford, I.Ragnarsson, P.Taras, A.Tehami, J.C.Waddington, D.Ward, S.Aberg

Multiple Superdeformed Bands in ¹⁵³Dy

NUCLEAR REACTIONS ¹²⁴Sn(³⁴S, 5n), E not given; measured γγγ-coin, sum spectra. ¹⁵³Dy deduced levels, J, π, moment of inertia, band structure, deformation, superdeformation features.

doi: 10.1103/PhysRevLett.63.2200
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1989PI09      Phys.Rev. C40, 610 (1989)

S.Pilotte, G.Kajrys, S.Monaro, M.P.Carpenter, V.P.Janzen, L.L.Riedinger, J.K.Johansson, D.G.Popescu, D.D.Rajnauth, J.C.Waddington

Quasiparticle Nature of Rotational Bands in ¹⁸⁵Pt

NUCLEAR REACTIONS ¹⁷³Yb(¹⁶O, 4n), E=90 MeV; measured Eγ, Iγ, γγ-coin, Iγ(θ). ¹⁸⁵Pt deduced levels, J, π, δ, B(λ). Enriched target, Ge detectors. Crank shell model.

doi: 10.1103/PhysRevC.40.610
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1989TA12      Phys.Lett. 222B, 357 (1989)

P.Taras, S.Flibotte, J.Gascon, B.Haas, S.Pilotte, D.C.Radford, D.Ward, H.R.Andrews, F.Banville, J.K.Johansson, J.C.Waddington

Additional Superdeformed States in the Continuum of ¹⁴⁹Gd

NUCLEAR REACTIONS ¹²⁴Sn(³⁰Si, 5n), E=150 MeV; analyzed data. ¹⁴⁹Gd deduced levels, J, π, superdeformation.

doi: 10.1016/0370-2693(89)90323-7
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1988HA02      Phys.Rev.Lett. 60, 503 (1988)

B.Haas, P.Taras, S.Flibotte, F.Banville, J.Gascon, S.Cournoyer, S.Monaro, N.Nadon, D.Prevost, D.Thibault, J.K.Johansson, D.M.Tucker, J.C.Waddington, H.R.Andrews, G.C.Ball, D.Horn, D.C.Radford, D.Ward, C.St.Pierre, J.Dudek

Superdeformed Band up to Spin ≈ (127/2) in ¹⁴⁹Gd

NUCLEAR REACTIONS ¹²⁴Sn(³⁰Si, 5n), E=150 MeV; measured Eγ, Iγ, Doppler shift fraction. ¹⁴⁹Gd deduced levels, J, π, moment of inertia superdeformed band quadrupole moment.

doi: 10.1103/PhysRevLett.60.503
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1988JA10      Phys.Rev.Lett. 61, 2073 (1988)

V.P.Janzen, M.P.Carpenter, L.L.Riedinger, W.Schmitz, S.Pilotte, S.Monaro, D.D.Rajnauth, J.K.Johansson, D.G.Popescu, J.C.Waddington, Y.S.Chen, F.Donau, P.B.Semmes

Evidence for a Low-Frequency πh_9/2 Band Crossing in ¹⁸⁵Pt and ¹⁸³Ir

NUCLEAR REACTIONS ¹⁷³Yb(¹⁶O, 4n), E=90 MeV; ¹⁶⁸Er(¹⁹F, 4n), E=85 MeV; measured γγ-coin. ¹⁸⁵Pt, ¹⁸³Ir deduced levels, J, π, γ-branching, B(λ) ratio, band crossing. Cranked shell model.

NUCLEAR STRUCTURE ¹⁸⁵Pt, ¹⁸³Ir; calculated levels, B(λ). Cranked shell model.

doi: 10.1103/PhysRevLett.61.2073
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1988TA20      Phys.Rev.Lett. 61, 1348 (1988)

P.Taras, S.Flibotte, J.Gascon, B.Haas, S.Pilotte, D.C.Radford, D.Ward, H.R.Andrews, G.C.Ball, F.Banville, S.Cournoyer, D.Horn, J.K.Johansson, S.Monaro, N.Nadon, D.Prevost, C.Pruneau, D.Thibault, D.M.Tucker, J.C.Waddington

Feeding of Discrete-Line Superdeformed Bands at Very High Spin

NUCLEAR REACTIONS ¹²⁴Sn(³⁰Si, 4n), (³⁰Si, 5n), (³⁰Si, 6n), (³⁰Si, xn), E=140-160 MeV; measured γ yields, γ sum spectra, multiplicities. ¹⁴⁹Gd deduced superdeformed band features.

doi: 10.1103/PhysRevLett.61.1348
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