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NSR database version of April 29, 2024.

Search: Author = P.Toivonen

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1987LI11      Nucl.Phys. A469, 348 (1987)

P.O.Lipas, P.Toivonen, E.Hammaren

IBA-1 Calculations of E2/M1 Mixing Ratios

NUCLEAR STRUCTURE ^{146,148,150,152}Sm, ^152,154,156Gd, ¹⁶²Dy, ^{162,164,166,168}Er, ¹⁷²Yb, ¹⁹⁰Os; calculated levels, δ(E2/M1). Interacting boson approximation.

doi: 10.1016/0375-9474(87)90115-1
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1986PA14      J.Phys.(London) G12, 1047 (1986)

A.Passoja, J.Kantele, M.Luontama, R.Julin, E.Hammaren, P.O.Lipas, P.Toivonen

Electromagnetic Decay of 0₂⁺ and O₃⁺ States in the N = 88-90 Nuclei of ^150,152Sm

RADIOACTIVITY ^152m,150mEu(EC), (β⁺), (β^-) [from ¹⁵⁰Sm(p, n), E=9.5 MeV; ¹⁵¹Eu(n, γ), E=thermal]; measured Iγ, Eγ, I(ce), I(ce)(X-ray)-coin. ^150,152Sm deduced levels, J, π, B(λ), E0 strength parameter. Enriched targets, Ge(Li) detectors, magnetic plus Si-Li conversion electron spectrometer. Interacting boson model.

doi: 10.1088/0305-4616/12/10/013
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1985LI10      Phys.Lett. 155B, 295 (1985)

P.O.Lipas, P.Toivonen, D.D.Warner

IBA Consistent-Q Formalism Extended to the Vibrational Region

NUCLEAR STRUCTURE ¹⁵²Gd; calculated level energy, B(E2) ratios. Interacting boson approximation model, vibrational region extension.

doi: 10.1016/0370-2693(85)91573-4
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1984KR02      J.Phys.(London) G10, 571 (1984)

T.I.Kracikova, M.Finger, V.N.Pavlov, V.A.Deryuga, P.O.Lipas, E.Hammaren, P.Toivonen

Nuclear Orientation Study of the Decay of ¹⁴⁶Eu

RADIOACTIVITY ¹⁴⁶Eu(EC), (β⁺) [from Er(p, X), E=660 MeV]; measured γ(θ), oriented nuclei; deduced orientation coefficients. ¹⁴⁶Sm deduced levels, J, π, δ, B(λ), X(E0/E2). Interacting boson approximation model.

doi: 10.1088/0305-4616/10/4/017
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1984KR09      J.Phys.(London) G10, 667 (1984)

T.I.Kracikova, M.Finger, J.Konicek, N.A.Lebedev, V.A.Deryuga, P.O.Lipas, E.Hammaren, P.Toivonen

Nuclear Orientation Study of the Decay of ¹⁴⁸Eu

NUCLEAR STRUCTURE ¹⁴⁸Sm; calculated levels, δ, B(E2), X(E0/E2), quasirotational band structure. Interacting boson model.

RADIOACTIVITY ¹⁴⁸Eu(EC), (β⁺), (α) [from Er(p, X), E=660 MeV]; measured γ(θ), oriented nuclei. ¹⁴⁸Sm deduced levels, J, π, δ, X(E0/E2). Interacting boson model.

doi: 10.1088/0305-4616/10/5/010
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1984KR14      J.Phys.(London) G10, 1115 (1984)

T.I.Kracikova, S.Davaa, M.Finger, M.I.Fominykh, W.D.Hamilton, P.O.Lipas, E.Hammaren, P.Toivonen

Nuclear Orientation Study of the Decay of ¹⁷²Lu

RADIOACTIVITY ¹⁷²Lu(EC) [from Ta(p, X)¹⁷²Hf(EC-decay)]; measured Eγ, Iγ, γ(θ), oriented nuclei. ¹⁷²Yb levels deduced J, π, γ-branching, δ, X(E0/E2), monopole transition density. Mass separated source implantation in Gd, Fe, ³He-⁴He dilution refrigerator, Ge(Li) detectors. Interacting boson model.

doi: 10.1088/0305-4616/10/8/016
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1984LI06      Phys.Lett. 139B, 10 (1984)

P.O.Lipas, E.Hammaren, P.Toivonen

IBA-1 Calculation of E2/M1 Mixing Ratios in ¹⁵⁴Gd

NUCLEAR STRUCTURE ¹⁵⁴Gd; calculated reduced (E2/M1) mixing ratio. Generalized interacting boson approximation.

doi: 10.1016/0370-2693(84)90023-6
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1983PA05      Phys.Lett. 124B, 157 (1983)

A.Passoja, J.Kantele, M.Luontama, J.Kumpulainen, R.Julin, P.O.Lipas, P.Toivonen

Disproof of the Alleged Two-Phonon Character of the O⁺₂ State in ⁶⁴Zn

RADIOACTIVITY ⁶⁴Ga(β⁺), (EC); measured I(ce). ⁶⁴Zn deduced level.

NUCLEAR REACTIONS ⁶⁴Zn(p, p'), E=5.9-6.9 MeV; measured Eγ, Iγ, γp-coin. ⁶⁴Zn deduced γ-branching, B(E2), B(E0)/B(E2), monopole transition strengths, 0⁺ level T_1/2. Discussed inadequacy of existing nuclear models.

doi: 10.1016/0370-2693(83)91425-9
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