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NSR database version of April 26, 2024.

Search: Author = E.Liukkonen

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1988KA01      Z.Phys. A329, 1 (1988)

R.Katajanheimo, R.Jaderholm, A.Siivola, R.Julin, E.Liukkonen

Low-Lying Excitations in the Odd-Odd Nucleus ¹⁵⁴Eu

NUCLEAR REACTIONS ¹⁵⁴Sm(³He, 2np), E=27 MeV; ¹⁵⁴Sm(d, 2n), E=10 MeV; measured Eγ, Iγ, γγ-coin. ¹⁵⁴Eu deduced levels, J, π, isomer T_1/2. Enriched target.

1984KA12      Z.Phys. A316, 361 (1984)

R.Katajanheimo, R.Jaderholm, A.Siivola, T.Tuurnala, E.Hammaren, E.Liukkonen

Low-Lying Levels in the Nuclei ¹⁵¹Nd and ¹⁵⁵Sm

NUCLEAR REACTIONS ¹⁵⁰Nd, ¹⁵⁴Sm(d, pγ), E=10 MeV; measured γγ-coin. ¹⁵¹Nd deduced levels, tentative J, π, γ-branching. ¹⁵⁵Sm deduced levels, γ-branching. Axial particle-rotor model calculations.

doi: 10.1007/BF01439909
Citations: PlumX Metrics

1984KA35      Z.Phys. A319, 91 (1984)

R.Katajanheimo, H.Liljavirta, A.Siivola, E.Hammaren, E.Liukkonen

Low-Energy Rotational Bands in the Nucleus ¹⁵⁵Eu

NUCLEAR REACTIONS ¹⁵⁴Sm(³He, np), E=22, 27 MeV; measured Eγ, Iγ, γγ-coin. ¹⁵⁵Eu deduced levels, J, π, γ-branching, rotational parameters. Particle-rotor model.

doi: 10.1007/BF01429772
Citations: PlumX Metrics

1984KO17      ATOMKI Kozlem. 26, 33 (1984)

J.Kownacki, J.Jastrzebski, P.Koczon, W.Skulski, J.Wrzesinski, J.Sieniawski, J.Styczen, W.Walus, A.Celler, E.Liukkonen, A.Lukko, A.Pakkanen, Th.Lindblad, S.Elfstrom

Multipolarity Excitations in the Single Closed Shell Nucleus ¹⁴⁰₅₈Ce₈₂

NUCLEAR REACTIONS ¹³⁸Ba(α, 2n), E not given; measured I(ce), γγ-coin. ¹⁴⁰Ce deduced levels, J, π, T_1/2, ICC, configuration. Intermediate image plus Si-Li electron spectrometer.

1983RE09      Phys.Scr. T5, 45 (1983)

J.Rekstad, A.Henriquez, F.Ingebretsen, G.Midttun, B.Skaali, R.Oyan, J.Wikne, T.Engeland, T.G.Thorsteinsen, E.Hammaren, E.Liukkonen

A Study of the Nuclear Structure at High Energy and Low Spin

NUCLEAR REACTIONS ^147,149Sm, ^155,157Gd, ^161,163Dy(³He, α), E=26 MeV; measured Eα, Iα, γα-coin, γ-multiplicity spectra; deduced structure change in deformed nuclei. ^146,148Sm, ¹⁵⁶Gd, ^160,162Dy deduced < Eγ > vs excitation energy. ¹⁵⁴Gd deduced < Eγ > vs excitation energy, γ-transition relative intensities.

doi: 10.1088/0031-8949/1983/T5/007
Citations: PlumX Metrics

1982KA36      Phys.Scr. 26, 417 (1982)

R.Katajanheimo, A.Siivola, E.Liukkonen, E.Hammaren

Remeasurement of the Lifetime of the Isomeric (9/2)⁺ State in ¹⁵⁵Dy

NUCLEAR REACTIONS ¹⁵⁵Gd(³He, 3n), E=27 MeV; measured γ(³He)(t), E(K X-ray), I(K X-ray). ¹⁵⁵Dy deduced isomer T_1/2, level decay characteristics, hindrance factors. Particle-rotor model.

doi: 10.1088/0031-8949/26/6/001
Citations: PlumX Metrics

1980HA13      Nucl.Phys. A339, 465 (1980)

E.Hammaren, E.Liukkonen, R.Katajanheimo, T.Tuurnala

Nanosecond Lifetimes of the Low-Spin States in the Nucleus ¹⁴⁷Nd. A Particle-Rotor Model Interpretation of the Results

NUCLEAR REACTIONS ¹⁴⁶Nd(d, pγ), E=10 MeV; measured Eγ, Iγ, γγ-coin, γ(t). ¹⁴⁷Nd levels deduced T_1/2, B(λ). Enriched target. Intrinsic Ge, Ge(Li) detectors, pulsed beam. Rotational model interpretation.

doi: 10.1016/0375-9474(80)90027-5
Citations: PlumX Metrics

1980KO07      Nucl.Phys. A337, 464 (1980)

J.Kownacki, Z.Sujkowski, E.Hammaren, E.Liukkonen, M.Piiparinen, T.Lindblad, H.Ryde, V.Paar

Excited States in ¹⁴⁶Sm and ¹⁴⁷Sm

NUCLEAR REACTIONS ^144,146Nd(α, 2n), (α, 3n), E=20-43 MeV; ^146,148Nd(³He, 3n), (³He, 4n), E=19-27 MeV; measured Eγ, Iγ(E), Iγ(θ), γγ(t), αγ(t), I(ce). ^146,147Sm deduced levels, J, π, T_1/2, ICC. Enriched targets, Ge(Li), Ge detectors, solenoidal, double focusing electron spectrometers with Si(Li) detectors.

doi: 10.1016/0375-9474(80)90154-2
Citations: PlumX Metrics

1979HA19      Nucl.Phys. A321, 71 (1979)

E.Hammaren, E.Liukkonen, M.Piiparinen, J.Kownacki, Z.Sujkowski, T.Lindblad, H.Ryde

Structural Connections between ¹⁴⁸Sm and ¹⁴⁹Sm Nuclei

NUCLEAR REACTIONS ¹⁴⁶Nd(α, 2n), ¹⁴⁸Nd(α, 3n), E=20-37 MeV; ¹⁴⁸Nd(³He, 3n), ¹⁵⁰Nd(³He, 4n), E=19-27 MeV; measured Eγ, Iγ(E), Iγ(θ), γγ-coin, αγ(t), Iγ(t), I(ce), I(ce)(t). ^148,149Sm deduced levels, J, π, T_1/2, ICC. Enriched targets. Ge(Li), Ge intrinsic detectors, solenoidal, double focussing electron spectrometers, Si(Li) detectors.

doi: 10.1016/0375-9474(79)90686-9
Citations: PlumX Metrics

1979KA16      Phys.Scr. 20, 125 (1979)

R.Katajanheimo, A.Siivola, T.Tuurnala, E.Hammaren, E.Liukkonen

The Isomeric 9/2⁺ and the Lowest 7/2^- State in the Weakly Deformed N = 89 Nuclei

NUCLEAR REACTIONS ¹⁴⁸Nd(d, pγ), E=10 MeV; ¹⁵⁴Sm(³He, 4nγ), ¹⁵⁵Gd(³He, 3nγ), E=27 MeV; measured γγ(t), pγ(t), Eγ. ¹⁴⁹Nd, ¹⁵¹Sm, ¹⁵³Gd, ^155,157Dy, ^159,161Er deduced levels, T_1/2, J, π. Nilsson assignments, B(E1) particle-rotor model, nonspheroidal Woods-Saxon potential.

doi: 10.1088/0031-8949/20/1/023
Citations: PlumX Metrics

1978BE39      Z.Phys. A287, 219 (1978)

I.Bergstrom, J.Blomqvist, C.J.Herrlander, J.Hattula, O.Knuuttila, E.Liukkonen, V.Rahkonen

On the Yrast Two Proton-Two Neutron Hole States in ²⁰⁸Po

NUCLEAR REACTIONS ²⁰⁸Pb(α, 4nγ), E=41-51 MeV; measured γγ(t), Eγ, Iγ, γ(E), γ(θ), γγ-coin. ²⁰⁸Pb deduced levels, J, π, T_1/2, λ, δ.

1976SL01      Phys.Lett. 60B, 153 (1976)

G.Sletten, V.Metag, E.Liukkonen

Picosecond Fission Isomers in Even-Even Cm Isotopes

RADIOACTIVITY, Fission ^240,242Cm(SF); measured T_1/2. ²⁴⁴Cm(SF); measured T_1/2 upper limit.

doi: 10.1016/0370-2693(76)90411-1
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1974ME10      Nucl.Instrum.Methods 114, 445 (1974)

V.Metag, E.Liukkonen, G.Sletten, O.Glomset, S.Bjornholm

Detection of Fission Isomers with Half-Lives in the Picosecond Range by the Recoil-Distance Technique

NUCLEAR REACTIONS ²³⁷Np(p, F), ²⁴²Pu(d, pnF); measured recoil distance. ²⁴²Pu level deduced T_1/2.

doi: 10.1016/0029-554X(74)90165-7
Citations: PlumX Metrics

1973ME23      Nucl.Phys. A213, 397 (1973)

V.Metag, S.M.Lee, E.Liukkonen, G.Sletten, S.Bjornholm, A.S.Jensen

Neutron-Fission Competition Near Threshold; The Influence of Shells and Pairing on the Decay of the ²⁴¹Cm Compound Nucleus

NUCLEAR REACTIONS ²³⁸Pu(α, n), E=19.9-23 MeV; ²³⁸Pu(α, 2n), E=19.9-27 MeV; ²⁴¹Am(p, 2n), E=8.2-16 MeV; measured σ(²⁴¹Cm), σ(²⁴⁰Cm), σ(fission). ^241,242Cm deduced n-width, F-width.

doi: 10.1016/0375-9474(73)90160-7
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetB0007.

1971LI09      Z.Phys. 241, 150 (1971)

E.Liukkonen, J.Hattula

Level Structure of ¹²⁰Sn from the Decay of ¹²⁰In and ¹²⁰Sb Isomers

RADIOACTIVITY ^120mIn, ^120mSb; measured Eγ, Iγ, γγ-coin; deduced log ft. ^120mIn; measured T_1/2, γγ-delay. ¹²⁰Sn deduced levels, J, π.

doi: 10.1007/BF01397904
Citations: PlumX Metrics

1971TU02      Z.Phys. 247, 436 (1971)

T.Tuurnala, V.Pursiheimo, E.Liukkonen

Energy Levels of ¹⁷⁴Yb Populated in the Decay of ¹⁷⁴Tm

RADIOACTIVITY ¹⁷⁴Tm; measured Eγ, Iγ, T_1/2, γγ-coin; deduced log ft. ¹⁷⁴Yb deduced levels, J, π, γ-branching.

doi: 10.1007/BF01395342
Citations: PlumX Metrics

1970HA08      Z.Phys. 231, 203 (1970)

J.Hattula, E.Liukkonen, J.Kantele

Levels of ¹¹⁸Sn Populated in the Decay of ¹¹⁸In and ¹¹⁸Sb Isomers

RADIOACTIVITY ^118mIn; measured Eγ, Iγ, γγ-coin; deduced log ft. ^118,118mSb; measured Eγ, Iγ, γγ-coin, γγ(θ); deduced log ft. ¹¹⁸Sn deduced levels, J, π, B(E2).

doi: 10.1007/BF01401032
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1970TU07      Phys.Scr. 2, 163 (1970)

T.Tuurnala, V.Pursiheimo, E.Liukkonen

Energy Levels of ¹⁷⁶Yb from the Decay of ¹⁷⁶Tm and ^176mYb

RADIOACTIVITY ¹⁷⁶Tm; measured βγ-, γγ-coin, T_1/2, Eγ, Iγ; deduced log ft. ^176mYb; measured Eγ, Iγ, T_1/2. ¹⁷⁶Yb deduced deduced levels, J, π. Ge(Li) detectors.

doi: 10.1088/0031-8949/2/4-5/007
Citations: PlumX Metrics

1969HA08      Nucl.Phys. A125, 477 (1969)

J.Hattula, E.Liukkonen, J.Kantele

New Isomeric State in ¹¹⁸In

RADIOACTIVITY ¹¹⁸In isomer [from ¹¹⁸Sn(n, p)]; measured Eγ, Iγ, ICC, T_1/2; deduced J, π. ¹¹⁸Sn deduced levels. Enriched target.

doi: 10.1016/0375-9474(69)91088-4
Citations: PlumX Metrics

1969LI14      Nucl.Phys. A138, 163 (1969)

E.Liukkonen, J.Hattula, A.Anttila

Levels of ⁸²Kr from the Decay of 35 h ⁸²Br

RADIOACTIVITY ⁸²Br[from ⁸¹Br(n, γ)]; measured Eγ, Iγ, γγ-coin, γγ(θ); deduced Iβ, log ft. ⁸²Kr deduced levels, J, π. Natural target, Ge(Li) detector.

doi: 10.1016/0375-9474(69)90389-3
Citations: PlumX Metrics

1969LI21      Ann.Acad.Sci.Fennicae, Ser.A VI. No.325 (1969)

E.Liukkonen, V.Pursiheimo, T.Tuurnala

A 31 ms Isomeric Activity in ¹⁵³Gd

RADIOACTIVITY ^155mGd; measured Eγ, Iγ, I(K X-ray), γγ-coin, T_1/2. ¹⁵⁵Gd deduced transitions, ICC, γ-multipolarity.

1968HA35      Ann.Acad.Sci.Fennicae, Ser.A VI, No.274 (1968)

J.Hattula, E.Liukkonen

On the Decay of 30s ^106gRh

RADIOACTIVITY ¹⁰⁶Rh; measured Eγ, Iγ, γγ-coin, γγ(θ). ¹⁰⁶Pd deduced levels, J, π.

1968LI01      Z.Physik 208, 208 (1968)

E.Liukkonen, J.Kantele

On the Disintegration Energies of ¹⁷⁴Lu Isomers

NUCLEAR STRUCTURE ¹⁷⁴Lu, ¹⁷⁴Hf; measured not abstracted; deduced nuclear properties.

doi: 10.1007/BF01380123
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1967KA13      Z.Physik 204, 456 (1967)

J.Kantele, E.Liukkonen, A.Sarmanto

A Note on the Structure of the 1518 keV Isomeric State in ¹⁷⁴Yb

NUCLEAR STRUCTURE ¹⁷⁴Lu, ¹⁷⁴Tm; measured not abstracted; deduced nuclear properties.

doi: 10.1007/BF01325736
Citations: PlumX Metrics