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NSR database version of April 27, 2024.

Search: Author = T.Spedstad-Tveter

Found 11 matches.

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1999GR28      Eur.Phys.J. A 6, 269 (1999)

P.T.Greenlees, P.Kuusiniemi, N.Amzal, A.Andreyev, P.A.Butler, K.J.Cann, J.F.C.Cocks, O.Dorvaux, T.Enqvist, P.Fallon, B.Gall, M.Guttormsen, D.Hawcroft, K.Helariutta, F.P.Hessberger, F.Hoellinger, G.D.Jones, P.Jones, R.Julin, S.Juutinen, H.Kankaanpaa, H.Kettunen, M.Leino, S.Messelt, M.Muikku, S.Odegard, R.D.Page, A.Savelius, A.Schiller, S.Siem, W.H.Trzaska, T.Tveter, J.Uusitalo

Fine Structure in the Alpha Decays of 226U and 230Pu

RADIOACTIVITY 226U(α) [from 208Pb(22Ne, 4n)]; 230Pu(α) [from 208Pb(26Mg, 4n)]; measured Eα, Iα, T1/2; deduced branching ratios, hindrance factors. 226U deduced level energy, deformation. Comparisons with neighboring nuclides.

doi: 10.1007/s100500050345
Citations: PlumX Metrics

1998GR19      J.Phys.(London) G24, L63 (1998)

P.T.Greenlees, N.Amzal, P.A.Butler, K.J.Cann, J.F.C.Cocks, D.Hawcroft, G.D.Jones, R.D.Page, A.Andreev, T.Enqvist, P.Fallon, B.Gall, M.Guttormsen, K.Helariutta, F.Hoellinger, P.M.Jones, R.Julin, S.Juutinen, H.Kankaanpaa, H.Kettunen, P.Kuusiniemi, M.Leino, S.Messelt, M.Muikku, A.Savelius, A.Schiller, S.Siem, W.H.Trzaska, T.Tveter, J.Uusitalo

First Observation of Excited States in 226U

NUCLEAR REACTIONS 208Pb(22Ne, 4n), E=112 MeV; measured Eγ, Iγ, (recoil)γ-, γγ-coin. 226U deduced levels, J, π, rotational bands, E1 transitions, octupole deformation. Recoil-decay tagging technique.

Data from this article have been entered in the XUNDL database. For more information, click here.

1997MA03      Nucl.Phys. A612, 262 (1997)

M.Mattiuzzi, A.Bracco, F.Camera, W.E.Ormand, J.J.Gaardhoje, A.Maj, B.Million, M.Pignanelli, T.Tveter

Angular Momentum Dependence of the GDR Width in Sn Nuclei at Fixed Excitation Energy

NUCLEAR REACTIONS 48Ti(58Ni, X), E=260 MeV; measured high energy γ(evaporation residue)-coin. 106Sn deduced GDR width angular dependence. Adiabatic model, thermal fluctuations, 176W GDR features analyzed.

doi: 10.1016/S0375-9474(96)00335-1
Citations: PlumX Metrics

1996BR08      Nucl.Phys. A599, 83c (1996)

A.Bracco, F.Camera, M.Mattiuzzi, D.Gnaccolini, B.Million, J.J.Gaardhoje, A.Maj, T.Tveter

Thermal Fluctuation and Collisional Damping Effects in the Hot Giant Dipole Resonance

NUCLEAR STRUCTURE 109,110Sn; analyzed GDR width. 166,165Er; analyzed γ-spectra, dipole strength function; deduced GDR damping mechanism in hot nuclei.

doi: 10.1016/0375-9474(96)00049-8
Citations: PlumX Metrics

1995BR11      Phys.Rev.Lett. 74, 3748 (1995)

A.Bracco, F.Camera, M.Mattiuzzi, B.Million, M.Pignanelli, J.J.Gaardhoje, A.Maj, T.Ramsoy, T.Tveter, Z.Zelazny

Increase in Width of the Giant Dipole Resonance in Hot Nuclei: Shape change or collisional damping ( Question )

NUCLEAR REACTIONS 62,61Ni(48Ti, X), E=223, 203 MeV; measured γ(θ), strength function. 109,110Sn deduced GDR, Γ.

doi: 10.1103/PhysRevLett.74.3748
Citations: PlumX Metrics

1995BR19      Acta Phys.Pol. B26, 407 (1995)

A.Bracco, F.Camera, M.Mattiuzzi, B.Million, M.Pignanelli, J.J.Gaardhoje, T.Ramsoy, T.Tveter, Z.Zelazny, A.Maj

The Damping of the GDR at Finite Temperature: Recent progress

NUCLEAR REACTIONS 70Zn(36Ar, X), E=27 MeV/nucleon; 62,61Ni(48Ti, X), E=203, 223 MeV; 148Nd(28Si, X), E=147 MeV; compiled, reviewed γ-spectra data; deduced GDR damping, other characteristic vs T for mass 110, 170. Hot rotating nuclei.

1995JE04      Nucl.Phys. A593, 162 (1995)

D.Jerrestam, B.Fogelberg, A.Kerek, W.Klamra, F.Liden, L.O.Norlin, J.Kownacki, D.Seweryniak, Z.Zelazny, C.Fahlander, J.Nyberg, M.Guttormsen, J.Rekstad, T.Spedstad-Tveter, A.Gizon, J.Gizon, R.Bark, G.Sletten, M.Piiparinen, Z.Preibisz, T.F.Thorsteinsen, E.Ideguchi, S.Mitarai

In-Beam Spectroscopic Studies of the Nucleus 105Cd

NUCLEAR REACTIONS 106Cd(p, np), E=30 MeV; 106Cd(3He, 2n2p), E=75 MeV; 92Zr(16O, 3n), E=77 MeV; 76Ge(34S, 5n), E=148 MeV; measured γγ, γγ(particle)-coin, Eγ, Iγ, DCO ratios. 105Cd deduced levels, J, π, band structure, configuration. Compton suppressed Ge-detector array. Model calculations.

doi: 10.1016/0375-9474(95)00334-W
Citations: PlumX Metrics
Data from this article have been entered in the XUNDL database. For more information, click here.

1995MA55      Acta Phys.Pol. B26, 467 (1995)

M.Mattiuzzi, A.Bracco, F.Camera, B.Million, J.J.Gaardhoje, A.Maj, T.Tveter, Z.Zelazny

Angular Momentum Dependence of the GDR Observables of A = 170 Nuclei at Finite Temperature

NUCLEAR REACTIONS 148Nd(28Si, X), E=147 MeV; measured Eγ, Iγ(θ), strength function. 176W deduced GDR observables angular momentum at finite temperature dependence.

1995MA84      Phys.Lett. 364B, 13 (1995)

M.Mattiuzzi, A.Bracco, F.Camera, B.Million, M.Pignanelli, J.J.Gaardhoje, A.Maj, T.Ramsoy, T.Tveter, Z.Zelazny

Thermal Fluctuation and Collisional Damping Effects in the GDR Observables in Hot Rotating 176W Nuclei

NUCLEAR REACTIONS 148Nd(28Si, X), E=147 MeV; measured γγ-coin, Eγ, Iγ. 176W deduced GDR width, thermal fluctuation, collisional damping effects role.

doi: 10.1016/0370-2693(95)01230-5
Citations: PlumX Metrics

1994BR08      Nucl.Phys. A569, 51c (1994)

A.Bracco, F.Camera, M.Mattiuzzi, B.Million, M.Pignanelli, C.Volpe, J.J.Gaardhoje, A.Maj, Z.Zelazny, T.Tveter

Thermal and Quantal Fluctuations as Probed by the GDR Observables

NUCLEAR REACTIONS 61,62Ni(48Ti, X), E not given; analyzed Iγ(θ), γ strength function data. 110Sn deduced GDR parameters.

doi: 10.1016/0375-9474(94)90095-7
Citations: PlumX Metrics

1993GA06      Acta Phys.Pol. B24, 139 (1993)

J.J.Gaardhoje, A.Maj, T.Tveter, Z.Zelazny, F.Camera, A.Bracco, B.Million, M.Pignanelli

Atomic Nuclei at High Excitation Energy Studied with Giant Resonances

NUCLEAR REACTIONS 70Ge(40Ar, X), E=10 MeV/nucleon; 93Nb(19F, X), E=80-160 MeV; 94Mo(16O, X), E=140 MeV; analyzed γ-decay data; deduced features of time for equilibration, collective motion build up, nucleonic, large scale mass arrangements. GDR decay, other systems studied.

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