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Search: Author = A.Neskakis

Found 36 matches.

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1988LI02      Nucl.Phys. A476, 545 (1988)

R.M.Lieder, A.Neskakis, J.Skalski, G.Sletten, J.D.Garrett, J.Dudek

Study of Band Structures and Crossing in 180Os

NUCLEAR REACTIONS 166Er(18O, 4n), E=85 MeV; measured E(γ), I(γ), σ(E(γ), θ), γγ-coin, I(ce). 180Os deduced levels, J, π, ICC, δ, γ-branching, B(M1)/B(E2) ratios. Enriched targets, Ge(Li) detectors, multi anti-Compton spectrometer set-up, mini-orange conversion electron spectrometer. Pairing-self-consistent cranking calculations, shape evolution.

doi: 10.1016/0375-9474(88)90423-X
Citations: PlumX Metrics


1985MO01      Nucl.Phys. A433, 159 (1985)

T.Morek, H.Beuscher, B.Bochev, T.Kutsarova, R.M.Lieder, M.Muller-Veggian, A.Neskakis

In-Beam Study of the Odd-Odd Nuclei 134La and 136La

NUCLEAR REACTIONS, ICPND 133Cs(α, 3n), E=55 MeV; 136Ba(p, xn), E=32-45 MeV; 138Ba(p, xn), E=17-45 MeV; measured Eγ, Iγ, Iγ(E), σ(E(γ), θ), γγ(t), αγ(t), pγ(t), γ yield. 134,136La deduced levels, J, π, T1/2, configurations. Ge(Li) detectors.

doi: 10.1016/0375-9474(85)90175-7
Citations: PlumX Metrics


1984MU08      Nucl.Phys. A417, 189 (1984)

M.Muller-Veggian, H.Beuscher, D.R.Haenni, R.M.Lieder, A.Neskakis

Study of the Level Structure in 134Ce

NUCLEAR REACTIONS 134Ba(α, 4n), E=60, 61 MeV; 135Ba(α, 5n), E=70 MeV; 136Ba(α, 6n), E=85 MeV; measured Eγ, Iγ, σ(Eγ, θ), γγ(t), αγ(t), I(ce), γ(ce)-coin. 134Ce deduced levels, J, π, T1/2, ICC. Ge(Li) detectors, orange β-spectrometer, enriched targets.

doi: 10.1016/0375-9474(84)90504-9
Citations: PlumX Metrics


1983NE14      Phys.Rev.Lett. 50, 1628 (1983)

A.Neskakis, R.M.Lieder, G.Sletten

Yrast-Yrare Interaction in Os Nuclei

NUCLEAR REACTIONS 182W(α, 6n), 166Er(18O, 4n), E not given; measured γγ-coin, Iγ(θ), I(ce). 180Os deduced levels, J, π, γ-multipolarity, ICC, band structure.

doi: 10.1103/PhysRevLett.50.1628
Citations: PlumX Metrics


1982MO26      Nucl.Phys. A391, 269 (1982)

T.Morek, H.Beuscher, B.Bochev, D.R.Haenni, T.Kutsarova, R.M.Lieder, M.Muller-Veggian, A.Neskakis

High-Spin States in 133La

NUCLEAR REACTIONS 133Cs(α, xn), E=50-70 MeV; measured Eγ, Iγ, σ(Eγ, θ), γγ(t), αγ(t). 133La deduced levels, J, δ, π. Ge(Li) detectors.

doi: 10.1016/0375-9474(82)90610-8
Citations: PlumX Metrics


1982NE01      Z.Phys. A304, 277 (1982)

A.Neskakis, R.M.Lieder, H.Beuscher, B.Bochev, D.Haenni, M.Muller-Veggian, G.Sletten

Properties of Side Bands Observed in 180Os

RADIOACTIVITY 180Os; measured γγ-coin, γ(θ), I(ce), γ(t), Eγ, Iγ; deduced yrast, rotational bands, J, π, inter-band γ-multipolarity, γ-branching, g(k), configuration.

doi: 10.1007/BF01414504
Citations: PlumX Metrics


1982NE05      Nucl.Phys. A390, 53 (1982)

A.Neskakis, R.M.Lieder, H.Beuscher, Y.Gono, D.R.Haenni, M.Muller-Veggian

Investigation of High-Spin States in Odd-Odd 190,192,194Au Nuclei

NUCLEAR REACTIONS 191,193Ir(α, 5n), E=63, 61.5 MeV; 193Ir(α, 3n), E=40 MeV; measured E(γ), I(γ), σ(Eγ, θ), αγ(t), γγ(t). 190,192,194Au deduced levels, J, π, T1/2, ICC, B(λ) ratios, δ, γ-branching. Enriched targets, Ge(Li) detectors.

doi: 10.1016/0375-9474(82)90606-6
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1982NE14      Phys.Lett. 118B, 49 (1982)

A.Neskakis, R.M.Lieder, G.Sletten, J.D.Garrett

Alignment of (1/2)-[541] Quasiprotons in 180Os

NUCLEAR REACTIONS 166Er(18O, 4n), E=85 MeV; measured γγ-coin. 180Os deduced levels, J, π, γ-branching, rotational band crossings, backbending configurations.

doi: 10.1016/0370-2693(82)90599-8
Citations: PlumX Metrics


1982SJ01      Phys.Rev. C25, 889 (1982)

T.P.Sjoreen, D.B.Fossan, U.Garg, A.Neskakis, A.R.Poletti, E.K.Warburton

High-Spin States in 205At

NUCLEAR REACTIONS 197Au(12C, 4n), E=77 MeV; measured γγ-coin, γ(θ), γ(t), Eγ, Iγ. 205At deduced levels, J, π, T1/2, B(λ), γ-multipolarity.

doi: 10.1103/PhysRevC.25.889
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1981HA25      Nucl.Phys. A365, 229 (1981)

D.R.Haenni, H.Beuscher, B.Bochev, T.Kutsarova, T.Morek, M.Muller-Veggian, A.Neskakis, C.Mayer-Boricke

A New 5.0 ns Isomer in 144Eu

NUCLEAR REACTIONS 144Sm(α, 3np), E=50 MeV; measured γ(θ), Eγ, Iγ, αγ(t), γγ-coin, γγ(t); 147Sm(p, 4n), E=40 MeV; measured I(ce), Iγ(θ). 144Eu deduced levels, isomer J, π, T1/2, configuration, ICC, γ-multipolarity. Ge(Li) detector, orange β-spectrometer, enriched targets.

doi: 10.1016/0375-9474(81)90295-5
Citations: PlumX Metrics


1981LI17      Phys.Scr. 24, 123 (1981)

R.M.Lieder, B.Bochev, T.Kutsarova, H.Beuscher, D.R.Haenni, T.Morek, M.Muller-Veggian, A.Neskakis, C.Mayer-Boricke, J.P.Didelez

Study of α-Induced Non-Equilibrium Reactions with Particle-γ Coincidences

NUCLEAR REACTIONS 209Bi(α, xnp), E=45-75 MeV; measured pγ-coin, σ(θ, Ep) for x=0, 1, 2, 3, 4. Prompt particle emission model.

doi: 10.1088/0031-8949/24/1B/008
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1980MO27      Z.Phys. A298, 267 (1980)

T.Morek, H.Beuscher, B.Bochev, D.R.Haenni, R.M.Lieder, T.Kutsarova, M.Muller-Veggian, A.Neskakis

Isomeric States in 134Ba

RADIOACTIVITY 134Ba [from 133Cs(α, 2np), E=55 MeV]; measured Eγ, Iγ, γ(θ), γγ-coin, γγ(t). 134Ba deduced levels, T1/2, J, π, ICC, γ-multipolarity, configurations.

NUCLEAR REACTIONS 134Ba(p, p'), E=17 MeV; measured Eγ, Iγ, γ(θ), γγ-coin, γγ(t). 134Ba deduced levels, T1/2, J, π, ICC, γ-multipolarity, configurations.

doi: 10.1007/BF01425156
Citations: PlumX Metrics


1980MU10      Nucl.Phys. A344, 89 (1980)

M.Muller-Veggian, H.Beuscher, D.R.Haenni, R.M.Lieder, A.Neskakis, C.Mayer-Boricke

Investigation of High-Spin States in 138,139Nd

NUCLEAR REACTIONS 140Ce(α, xn), E=85 MeV; measured Eγ, Iγ, σ(Eγ, θ), γγ(t), αγ(t). 138,139Nd deduced levels, J, π. Enriched targets. Ge(Li) detectors.

doi: 10.1016/0375-9474(80)90433-9
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1979GO15      Nucl.Phys. A327, 269 (1979)

Y.Gono, R.M.Lieder, M.Muller-Veggian, A.Neskakis, C.Mayer-Boricke

In-Beam γ-Ray Study of 189,191,193Au

NUCLEAR REACTIONS 191,193Ir(α, 4nγ), E=51 MeV; 191Ir(α, 6nγ), E=77 MeV; measured Eγ, Iγ, σ(Eγ, θ), γγ-, αγ(t). 189,191,193Au deduced levels, J, π, T1/2, γ-branching, ICC. Enriched targets. Ge(Li), intrinsic Ge detectors.

doi: 10.1016/0375-9474(79)90259-8
Citations: PlumX Metrics


1979HA48      Nucl.Phys. A331, 141 (1979)

D.R.Haenni, H.Beuscher, R.M.Lieder, M.Muller-Veggian, A.Neskakis, C.Mayer-Boricke

Weak Coupling and High-Spin States in 145Eu

NUCLEAR REACTIONS 144Sm(α, 2npγ), E=50 MeV; measured Eγ, Iγ(θ), γγ(t), αγ(t). 145Eu deduced levels J, π, T1/2. Ge(Li) detectors. Enriched target.

doi: 10.1016/0375-9474(79)90306-3
Citations: PlumX Metrics


1979MU03      Z.Phys. A290, 43 (1979)

M.Muller-Veggian, H.Beuscher, R.M.Lieder, Y.Gono, D.R.Haenni, A.Neskakis, C.Mayer-Boricke

10+ Isomers Observed in Even-Even 78-Neutron Nuclei

NUCLEAR REACTIONS 140Ce(α, 6n), E=86 MeV; 142Nd(α, 6n), E=90 MeV; measured Eγ, Iγ, γ(θ), γγ-coin, attenuation coefficients. 138Nd, 140Sm deduced levels. 138Nd, 140Sm, 136Ce levels deduced T1/2, J, π, B(E2), configuration.


1979NE01      Phys.Lett. 80B, 194 (1979)

A.Neskakis, R.M.Lieder, H.Beuscher, Y.Gono, D.R.Haenni, M.Muller-Veggian, C.Mayer-Boricke

Observation of Rotation-Aligned Bands in the Odd-Odd Nuclei 190,192,194Au

NUCLEAR REACTIONS 191,193Ir(α, xn), E=40, 61.5, 63 MeV; measured Eγ, Iγ, γ-branching for X=3, 5. 190,192,194Au deduced levels, δ, rotational-aligned bands based on (11-), (12-) isomers. Configurations in agreement with triaxial-rotor-plus-particle model.

doi: 10.1016/0370-2693(79)90196-5
Citations: PlumX Metrics


1979PO19      Phys.Rev. C20, 1768 (1979)

A.R.Poletti, R.P.Sjoreen, D.B.Fossan, U.Garg, A.Neskakis, E.K.Warburton

High-Spin States in 210Rn: The Effect of the Neutron Holes on the Four-Proton Configurations

NUCLEAR REACTIONS 204Pb(9Be, 3nγ), E=40-55 MeV; measured γγ-coin, σ(E), Iγ(θ). 210Rn deduced levels, T1/2, γ-multipolarities, J. Pulsed beam.

doi: 10.1103/PhysRevC.20.1768
Citations: PlumX Metrics


1978LI10      Nucl.Phys. A299, 255 (1978)

R.M.Lieder, A.Neskakis, M.Muller-Veggian, Y.Gono, C.Mayer-Boricke, S.Beshai, K.Fransson, C.G.Linden, T.Lindblad

Rotational Bands in 195,197Tl

RADIOACTIVITY 195,197Pb; measured Eγ, Iγ, γγ(t), T1/2(β). 195,197Tl deduced levels. Ge(Li) detectors.

NUCLEAR REACTIONS 197Au(α, 4nγ), E=50-51 MeV; 197Au(α, 6nγ), E=76 MeV; measured Eγ, Iγ, σ(Eγ, θ), γγ-, αγ(t)-coin, I(ce). 195,197Tl deduced levels, J, π, T1/2, ICC, δ, γ-branching. Natural targets. Ge(Li), Si(Li) detectors. Solenoidal electron spectrometer.

doi: 10.1016/0375-9474(78)90030-1
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1978LI14      Phys.Rev.Lett. 41, 742 (1978)

R.M.Lieder, J.P.Didelez, H.Beuscher, D.R.Haenni, M.Muller-Veggian, A.Neskakis, C.Mayer-Boricke

Observation of a New Isomer in 212Po

NUCLEAR REACTIONS 209Bi(α, p), E ≈ 45 MeV; measured σ, pγ(t), Eγ, Eα, αγ-coin, pγ-coin, α(t). 212Po deduced levels, J, π, T1/2.

doi: 10.1103/PhysRevLett.41.742
Citations: PlumX Metrics


1978MA43      Nucl.Phys. A311, 395 (1978)

M.A.J.Mariscotti, H.Beuscher, W.F.Davidson, Y.Gono, H.M.Jager, R.M.Lieder, M.Muller-Veggian, A.Neskakis, D.R.Haenni, D.R.Zolnowski

In-Beam Study of 144Gd

NUCLEAR REACTIONS 144Sm(α, 4nγ), E=60-110 MeV; measured Eγ, Iγ, σ(Eα, Eγ, θ(γ), t), γγ-coin, I(ce). 144Gd deduced levels, J, π, T1/2, ICC, δ. Ge(Li), Si(Li) detectors, steering magnet, β-spectrometer.

doi: 10.1016/0375-9474(78)90521-3
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1978MU09      Nucl.Phys. A304, 1 (1978)

M.Muller-Veggian, Y.Gono, R.M.Lieder, A.Neskakis, C.Mayer-Boricke

High-Spin States and Isomers in 136,137,138Ce

NUCLEAR REACTIONS 136Ba(α, 4n), E=61 MeV; 138Ba(α, xn), X=5, 4, E=70 MeV; measured Eγ, Iγ, σ(Eγ, θ), γγt, αγ-delay. 136,137,138Ce deduced levels, J, π, T1/2, δ. Enriched targets. Ge(Li) detectors.

doi: 10.1016/0375-9474(78)90092-1
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1977GO12      Phys.Lett. 70B, 159 (1977)

Y.Gono, R.M.Lieder, M.Muller-Veggian, A.Neskakis, C.Mayer-Boricke

Particle-Hole Symmetry Observed in the Angular Distributions of γ-Rays in 189,191,193Au

NUCLEAR REACTIONS 193,191Ir(α, 4nγ), (α, 6nγ), E=51, 77 MeV; measured Eγ, Iγ, γ(θ). 189,191,193Au transitions deduced δ.

doi: 10.1016/0370-2693(77)90510-X
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1976DA10      J.Phys.(London) G2, 199 (1976)

W.F.Davidson, R.M.Lieder, H.Beuscher, A.Neskakis, G.A.Varley, J.C.Willmott, F.Kearns, J.C.Lisle

The Ground-State Rotational Bands in 164,166Er

NUCLEAR REACTIONS 164Dy(α, 2nγ), E=27.5 MeV; 164Dy(α, 4nγ), E=45 MeV; 154Sm(14C, 4nγ), E=62 MeV; measured Eγ, Iγ, γγ(t), γ(θ), γγ-coin. 164,166Er deduced levels, J, π, backbending.

doi: 10.1088/0305-4616/2/3/011
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1976GE03      J.Phys.(London) G2, L1 (1976)

W.Gelletly, R.Chapman, G.D.Dracoulis, S.Flanagan, A.J.Hartley, J.N.Mo, W.Scheck, R.M.Lieder, H.Beuscher, W.F.Davidson, A.Neskakis, H.M.Jager

Rotational Bands in 151Sm

NUCLEAR REACTIONS 150Nd(α, 3nγ), E=16.5-38.4 MeV; measured σ(E, Eγ, θ), γγ(t). 151Sm deduced levels, K, J, π, T1/2.

doi: 10.1088/0305-4616/2/1/002
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1976GO22      Phys.Rev.Lett. 37, 1123 (1976)

Y.Gono, R.M.Lieder, M.Muller-Veggian, A.Neskakis, C.Mayer-Boricke

Blocking Effect in the Transitional Nuclei 189,191,193Au

NUCLEAR REACTIONS 191,193Ir(α, 4nγ), (α, 6nγ), E=51, 77 MeV; measured in-beamγ. 189,191,193Au deduced levels, K, T1/2, λ, J, π.

doi: 10.1103/PhysRevLett.37.1123
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1976MA56      Z.Phys. A279, 169 (1976)

M.A.J.Mariscotti, H.Beuscher, W.F.Davidson, R.M.Lieder, A.Neskakis, H.M.Jager

Ground State Bands in 142Gd and 140Sm

NUCLEAR REACTIONS 144Sm, 142Nd(α, 6nγ), E=80-130 MeV; measured σ(E, Eγ, θ), γγ-coin, γ(t). 142Gd deduced levels, K, J, π. 140Sm deduced levels, K, J, π, T1/2.

doi: 10.1007/BF01437874
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1976NE03      Nucl.Phys. A261, 189 (1976)

A.Neskakis, R.M.Lieder, M.Muller-Veggian, H.Beuscher, W.F.Davidson, C.Mayer-Boricke

Evidence for h9/2 Proton Induced Backbending in the Os Region: Investigation of the Nuclei 181Re, 181-184Os

NUCLEAR REACTIONS 181Ta(α, 4nγ), E=52 MeV; 182,184,186W(α, xnγ), X=4, 5, 6, 7, E=65-88 MeV; measured Eγ, Iγ, γγΔt-coin, αγ-delay. 181Re, 181,183,184Os deduced levels, J, π, T1/2, λ, γ-branching, δ. Enriched targets. Ge(Li) detectors.

doi: 10.1016/0375-9474(76)90565-0
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1975BE34      Nucl.Phys. A249, 379 (1975)

H.Beuscher, W.F.Davidson, R.M.Lieder, A.Neskakis, C.Mayer-Boricke

Study of Coriolis-Decoupled Bands in 155,157,159Dy and 155,157,159Er Using (α, xnγ) Reactions

NUCLEAR REACTIONS 156,158,160Gd(α, xnγ), X=5 or 7, Eα=63-98 MeV; 160,162,164Dy(α, xnγ), X=5, 7, 9, Eα=92-108 MeV; 144Nd(16O, 5nγ), E(16O)=100 MeV; measured Eγ, Iγ, γγ-Δt coin, (Eγ, θ(γ)), αγ delay. 155,157,159Dy, 155,157,159Er deduced levels, I, π, γ-branching, δ. Enriched targets.

doi: 10.1016/0375-9474(75)90194-3
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1975FE06      Z.Phys. A273, 163 (1975)

M.Fenzl, R.M.Lieder, H.Beuscher, W.F.Davidson, A.Neskakis, H.M.Jager

Observation and Interpretation of a Side Band in the Deformed Nucleus 162Er

NUCLEAR REACTIONS 162Dy(α, 4nγ), E=48 MeV; measured Eγ, Iγ, γ(θ), γγ-coin. 162Er deduced levels, J, π.

doi: 10.1007/BF01435835
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1975JA12      Nucl.Instrum.Methods 125, 53 (1975)

H.M.Jager, H.Beuscher, W.F.Davidson, R.M.Lieder, A.Neskakis

On the Careful Determination of Gamma-Ray Angular Distributions in (α, xnγ) Reactions: Example of the 186W(α, 7nγ)183Os Reaction

NUCLEAR REACTIONS 186W(α, xnγ), (α, 7nγ), E=90 MeV; measured σ(Eγ, θ). 183Os deduced levels, γ-mixing, λ.


1975LI16      Nucl.Phys. A248, 317 (1975)

R.M.Lieder, H.Beuscher, W.F.Davidson, A.Neskakis, C.Mayer-Boricke

Excitation of High-Spin States in 190,191,192,193,194Hg Through (α, xn) Reactions

NUCLEAR REACTIONS 194,195,196Pt(α, xnγ), E=65-108 MeV; 181Ta(14N, 5nγ), E=93 MeV; measured Eγ, Iγ, γ(t), γ(θ), γγ(t). 190,191,192,193,194,195Hg deduced levels, J, π, δ, γ-branching. 190,192,194Hg levels deduced T1/2. 191,193Hg transitions deduced B(E2). Enriched targets. Ge(Li) detectors.

doi: 10.1016/0375-9474(75)90168-2
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1974BE11      Phys.Rev.Lett. 32, 843 (1974)

H.Beuscher, W.F.Davidson, R.M.Lieder, A.Neskakis, C.Mayer-Boricke

High-Spin States and Coriolis-Decoupled Bands in 190-194Hg

NUCLEAR REACTIONS 194,196Pt(α, xnγ), E=65-108 MeV; measured σ(E;Eγ, θ, t), γγ-coin. 181Ta(14N, 5n), E=93 MeV; measured σ(Eγ, θ). 190,191,192,193,194Hg deduced levels, J, π.

doi: 10.1103/PhysRevLett.32.843
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1974LI04      Phys.Lett. 49B, 161 (1974)

R.M.Lieder, H.Beuscher, W.F.Davidson, A.Neskakis, C.Mayer-Boricke, Y.El Masri, P.Monseu, J.Steyaert, J.Vervier

Twin Backbending in 156Dy

NUCLEAR REACTIONS 160Gd(α, 8nγ), E=98 MeV; 159Tb(p, 4nγ), E=39 MeV; measured σ(Eγ, θ), γγ-coin. 156Dy deduced levels, J, π, backbending.

doi: 10.1016/0370-2693(74)90498-5
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1974RI05      Nucl.Phys. A223, 234 (1974)

B.Richter, M.J.Canty, L.Ley, M.V.Banaschik, A.Neskakis

Spectroscopic Investigations of the Decay 223Ra → 219Rn

RADIOACTIVITY 223Ra [from 227Ac]; measured I(ce), γce delay, αγ(θ), αγP. 219Rn deduced transitions, transition probabilities, γ-mixing, T1/2, J.

doi: 10.1016/0375-9474(74)90412-6
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1973DA27      Z.Phys. 264, 235 (1973)

W.F.Davidson, R.M.Lieder, H.Beuscher, A.Neskakis, Z.Seres, C.Mayer-Boricke

Observation of Back- and Forwardbending in the 182Os Ground-State Band

NUCLEAR REACTIONS 186W(α, 8nγ), E=106 MeV; measured Eγ, γ(θ, t), γγ-coin. 182Os deduced transitions.

doi: 10.1007/BF01396279
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