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NSR database version of April 11, 2024.

Search: Author = S.Messelt

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2007LA23      Acta Phys.Pol. B38, 1495 (2007)

A.C.Larsen, M.Guttormsen, R.Chankova, F.Ingebretsen, T.Lonnroth, S.Messelt, S.W.Odegard, J.Rekstad, S.Siem, N.U.H.Syed, A.Schiller, A.Voinov

Radiative Strength Functions of Warm Nuclei in the 1f_7/2 Shell

NUCLEAR REACTIONS ⁵¹V, ⁴⁵Sc(³He, αγ), (³He, ³He'γ), E=30, 38 MeV; measured Eγ, Eα, E(³He), (particle)γ-coinc. ^50,51V, ^44,45Sc deduced level densities and giant resonance strength functions.

2007LA31      Phys.Rev. C 76, 044303 (2007)

A.C.Larsen, M.Guttormsen, R.Chankova, F.Ingebretsen, T.Lonnroth, S.Messelt, J.Rekstad, A.Schiller, S.Siem, N.U.H.Syed, A.Voinov

Nuclear level densities and γ-ray strength functions in ^{44, 45}Sc

NUCLEAR REACTIONS ⁴⁵Sc(³He, αγ), (³He, ³He'γ), E=38 MeV; measured Eγ, Iγ. ⁴⁴Sc, ⁴⁵Sc; deduced level densities, γ-strength functions, parity asymmetry.

doi: 10.1103/PhysRevC.76.044303
Citations: PlumX Metrics
Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO1700.

2006CH14      Phys.Rev. C 73, 034311 (2006)

R.Chankova, A.Schiller, U.Agvaanluvsan, E.Algin, L.A.Bernstein, M.Guttormsen, F.Ingebretsen, T.Lonnroth, S.Messelt, G.E.Mitchell, J.Rekstad, S.Siem, A.C.Larsen, A.Voinov, S.Odegard

Level densities and thermodynamical quantities of heated ^93-98Mo isotopes

NUCLEAR REACTIONS ^94,96Mo(³He, ³He'), (³He, α), E=30 MeV; ⁹⁸Mo(³He, ³He'), (³He, α), E=45 MeV; measured particle spectra, Eγ, Iγ, (particle)γ-coin. ^{93,94,95,96,97,98}Mo deduced level densities; deduced thermodynamical quantities, phase transition features.

doi: 10.1103/PhysRevC.73.034311
Citations: PlumX Metrics
Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO1671.

2006LA12      Phys.Rev. C 73, 064301 (2006)

A.C.Larsen, R.Chankova, M.Guttormsen, F.Ingebretsen, S.Messelt, J.Rekstad, S.Siem, N.U.H.Syed, S.W.Odegard, T.Lonnroth, A.Schiller, A.Voinov

Microcanonical entropies and radiative strength functions of ^{50, 51}V

NUCLEAR REACTIONS ⁵¹V(³He, ³He'), (³He, α), E=30 MeV; measured Eγ, Iγ, (particle)γ-coin. ^50,51V deduced level densities, radiative strength functions.

doi: 10.1103/PhysRevC.73.064301
Citations: PlumX Metrics
Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO1699.

2005GU16      Phys.Rev. C 71, 044307 (2005)

M.Guttormsen, R.Chankova, U.Agvaanluvsan, E.Algin, L.A.Bernstein, F.Ingebretsen, T.Lonnroth, S.Messelt, G.E.Mitchell, J.Rekstad, A.Schiller, S.Siem, A.C.Sunde, A.Voinov, S.Odegard

Radiative strength functions in ^93-98Mo

NUCLEAR REACTIONS ^94,96Mo(³He, ³He'), (³He, α), E=30 MeV; ^97,98Mo(³He, ³He'), (³He, α), E=45 MeV; measured particle spectra, Eγ, Iγ, (particle)γ-coin. ^{93,94,95,96,97,98}Mo deduced radiative strength functions.

doi: 10.1103/PhysRevC.71.044307
Citations: PlumX Metrics

2005SU07      Acta Phys.Pol. B36, 1197 (2005)

A.C.Sunde, M.Guttormsen, R.Chankova, F.Ingebretsen, T.Lonnroth, S.Messelt, J.Rekstad, A.Schiller, S.Siem, N.U.H.Syed, A.Voinov, S.W.Odegard

Thermal and electromagnetic properties of the light vanadium isotopes ^{50, 51}V

NUCLEAR REACTIONS ⁵¹V(³He, ³He'), (³He, α), E not given; measured Eγ, Iγ. ^50,51V deduced radiative strength functions, thermodynamic properties.

2001HE39      Appl.Radiat.Isot. 54, 839 (2001)

G.Henriksen, S.Messelt, E.Olsen, R.H.Larsen

Optimisation of cyclotron production parameters for the ²⁰⁹Bi(α, 2n) ²¹¹At reaction related to biomedical use of ²¹¹At

NUCLEAR REACTIONS ²⁰⁹Bi(α, 2n), (α, 3n), E=27.6-30.1 MeV; measured yields. comparison with previous results.

doi: 10.1016/S0969-8043(00)00346-8
Citations: PlumX Metrics
Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD0167.

2001SC02      Phys.Rev. C63, 021306 (2001)

A.Schiller, A.Bjerve, M.Guttormsen, M.Hjorth-Jensen, F.Ingebretsen, E.Melby, S.Messelt, J.Rekstad, S.Siem, S.W.Odegard

Critical Temperature for Quenching of Pair Correlations

NUCLEAR REACTIONS ^162,163Dy, ^172,173Yb(³He, X), E=45 MeV; measured Eα, Eγ, αγ-coin. ^161,162Dy, ^171,172Yb deduced level density and heat capacity vs excitation energy, critical temperature for phase-transition.

doi: 10.1103/PhysRevC.63.021306
Citations: PlumX Metrics
Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO1670.

2000ME25      Phys.Scr. T88, 138 (2000)

E.Melby, L.Bergholt, M.Guttormsen, M.Hjorth-Jensen, F.Ingebretsen, S.Messelt, J.Rekstad, A.Schiller, S.Siem, S.W.Odegard

Experimental Temperature and Heat Capacity in Rare Earth Nuclei

NUCLEAR REACTIONS ¹⁶³Dy, ¹⁶⁷Er, ¹⁷³Yb(³He, α), E=45 MeV; measured Eγ, Iγ, αγ-coin. ¹⁶²Dy, ¹⁶⁶Er, ¹⁷²Yb deduced level densities, temperature vs excitation energy, heat capacities.

doi: 10.1238/Physica.Topical.088a00138
Citations: PlumX Metrics

2000SC33      Phys.Scr. T88, 144 (2000)

A.Schiller, L.Bergholt, M.Guttormsen, E.Melby, S.Messelt, J.Rekstad, S.Siem

Level Densities and γ-Strength Functions in Rare Earth Nuclei

NUCLEAR REACTIONS ¹⁶²Dy(³He, ³He'), E=45 MeV; measured Eγ, Iγ, (particle)γ-coin. ¹⁶²Dy deduced level density and temperature vs excitation energy, pygmy resonance strength vs temperature.

doi: 10.1238/Physica.Topical.088a00144
Citations: PlumX Metrics

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, T_1/2; deduced branching ratios, hindrance factors. ²²⁶U deduced level energy, deformation. Comparisons with neighboring nuclides.

doi: 10.1007/s100500050345
Citations: PlumX Metrics

1999ME23      Phys.Rev.Lett. 83, 3150 (1999)

E.Melby, L.Bergholt, M.Guttormsen, M.Hjorth-Jensen, F.Ingebretsen, S.Messelt, J.Rekstad, A.Schiller, S.Siem, S.W.Odegard

Observation of Thermodynamical Properties in the ¹⁶²Dy, ¹⁶⁶Er, and ¹⁷²Yb Nuclei

NUCLEAR REACTIONS ¹⁶³Dy, ¹⁶⁷Er, ¹⁷³Yb(³He, α), E=45 MeV; measured Eγ, Iγ, αγ-coin. ¹⁶²Dy, ¹⁶⁶Er, ¹⁷²Yb deduced level densities, heat capacities, related thermodynamic properties.

doi: 10.1103/PhysRevLett.83.3150
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.

1994GU04      Nucl.Phys. A573, 130 (1994)

M.Guttormsen, L.Bergholt, F.Ingebretsen, G.Lovhoiden, S.Messelt, J.Rekstad, T.S.Tveter, H.Helstrup, T.F.Thorsteinsen

The (³He, α) Reaction Mechanism: A study of the angular momentum transfer

NUCLEAR REACTIONS ¹⁶³Dy(³He, αxn), E=45 MeV; measured σ(Eα), Eγ, Iγ, αγ-coin. ^162,160,158Dy deduced γ-ray side-feeding into ground-band states. Enriched target, Ge, Na, Si detectors.

doi: 10.1016/0375-9474(94)90017-5
Citations: PlumX Metrics

1992AN15      Nucl.Phys. A550, 235 (1992)

E.Andersen, H.Helstrup, G.Lovhoiden, T.F.Thorsteinsen, M.Guttormsen, S.Messelt, T.S.Tveter, M.A.Hofstee, J.M.Schippers, S.Y.van der Werf

Helium-Induced One-Neutron Transfer to Levels in ¹⁶²Dy

NUCLEAR REACTIONS ¹⁶¹Dy(α, ³He), ¹⁶³Dy(³He, α), E=50 MeV; measured E(³He), Eα, σ(θ). ¹⁶²Dy deduced levels, J, π. Nilsson model.

doi: 10.1016/0375-9474(92)90681-9
Citations: PlumX Metrics

1991GU04      Nucl.Phys. A531, 370 (1991)

M.Guttormsen, A.Atac, K.Klungland, S.Messelt, T.Ramsoy, J.Rekstad, T.S.Tveter, Z.Zelazny

Gross Properties of Statistical γ-Decay in ¹⁷²Yb

NUCLEAR REACTIONS ¹⁷³Yb(³He, α), E=45 MeV; measured σ(Eα), Eγ, Iγ, αγ-coin. ¹⁷²Yb deduced γ-ray multiplicity, statistical γ-decay features. Enriched target, Ge, NaI, Si detectors.

doi: 10.1016/0375-9474(91)90617-F
Citations: PlumX Metrics

1990GU14      Phys.Scr. T32, 54 (1990)

M.Guttormsen, A.Atac, G.Lovhoiden, S.Messelt, T.Ramsoy, J.Rekstad, T.F.Thorsteinsen, T.S.Tveter, Z.Zelazny

Statistical Gamma-Decay at Low Angular Momentum

NUCLEAR REACTIONS ¹⁷⁰Yb, ¹⁶²Dy(³He, ³He'), ¹⁷³Yb, ¹⁶²Dy(³He, α), E=45 MeV; measured γ(ejectile)-coin; deduced γ-emission mechanism.

doi: 10.1088/0031-8949/1990/T32/010
Citations: PlumX Metrics

1989HO13      Nucl.Phys. A496, 462 (1989)

J.Honkanen, V.Koponen, P.Taskinen, J.Aysto, K.Eskola, S.Messelt, K.Ogawa

Beta Strength to Excited States in the Decays of f_7/2 Mirror Nuclides

RADIOACTIVITY ⁴⁹Mn(β⁺) [from ⁵⁰Cr(p, 2n)]; ⁵¹Fe(β⁺) [from ⁵⁰Cr(³He, 2n)]; ⁵³Co(β⁺) [from ⁵⁴Fe(p, 2n)]; measured Eγ, Iγ, T_1/2; deduced log ft. ⁴⁹Cr, ⁵¹Mn, ⁵³Fe deduced levels, J, π, Gamow-Teller matrix elements, B(λ). Ge, Si(Au), plastic detectors, He jet, on-line mass separation. Shell-model calculations.

doi: 10.1016/0375-9474(89)90071-7
Citations: PlumX Metrics

1987AT01      Nucl.Phys. A472, 269 (1987)

A.Atac, J.Rekstad, M.Guttormsen, S.Messelt, T.Ramsoy, T.F.Thorsteinsen, G.Lovhoiden, T.Rodland

The Decay of Hot Dysprosium Nuclei

NUCLEAR REACTIONS ^162,163Dy(³He, xnα), E=45 MeV; measured σ(Eα), Eγ, Iγ, αγ-coin. ^{162,161,160,159,158}Dy deduced γ-multiplicity, neutron energy, α-spectra. Enriched targets, Ge, NaI, Si detectors. Fermi-gas model analysis.

doi: 10.1016/0375-9474(87)90210-7
Citations: PlumX Metrics

1986GU03      Phys.Scr. 33, 385 (1986)

M.Guttormsen, A.Atac, F.Ingebretsen, S.Messelt, J.B.Olsen, T.Ramsoy, J.Rekstad, L.A.Ronning, G.Lovhoiden, T.Rodland, T.F.Thorsteinsen

Statistical γ-Decay in s-d Shell Nuclei

NUCLEAR REACTIONS ²⁷Al(³He, α), (³He, ³He'), (³He, t), E=45 MeV; measured σ(Eα), σ(E(³He')), σ(Et), γ(particle)-coin. ^26,27Al, ²⁷Si deduced γ-multiplicity. Fermi gas model.

doi: 10.1088/0031-8949/33/5/001
Citations: PlumX Metrics

1986RE18      Phys.Scr. 34, 644 (1986)

J.Rekstad, M.Guttormsen, A.Atac, F.Ingebretsen, S.Messelt, T.Ramsoy, T.F.Thorsteinsen, G.Lovhoiden, T.Rodland

Structure and Decay Properties of Low-Spin States at High Excitation Energy

NUCLEAR REACTIONS ^161,163Dy(d, t), E=15 MeV; measured σ(Et), Eγ, Iγ, γγ-coin. ^160,162Dy deduced levels, decay characteristics. Other data input, ΔE-E telescopes, Ge, NaI detectors.

doi: 10.1088/0031-8949/34/6A/020
Citations: PlumX Metrics

1984RE04      Nucl.Phys. A417, 376 (1984)

J.Rekstad, B.Nordmoen, A.Henriques, F.Ingebretsen, S.Messelt, T.F.Thorsteinsen, E.Hammaren

The (³He, α) Strength Functions in Rare-Earth Nuclei

NUCLEAR REACTIONS ^156,157Gd, ¹⁷¹Yb(³He, α), E=26 MeV; measured σ(Eα, θ), αγ-coin. ^155,156Gd, ¹⁷⁰Yb levels deduced L, J, π, S. Enriched targets. DWBA calculations. Comparison to particle-plus-rotor model.

doi: 10.1016/0375-9474(84)90403-2
Citations: PlumX Metrics

1983AY01      Nucl.Phys. A404, 1 (1983)

J.Aysto, J.Honkanen, W.Trzaska, K.Eskola, K.Vierinen, S.Messelt

Features of the β-Decay of ^93mRu to Proton Emitting States in ⁹³Tc

RADIOACTIVITY ^93mRu(β⁺p) [from ⁹²Mo(³He, 2n), E=24 MeV]; measured β-delayed Ep, Ip, Eγ, Iγ, T_1/2, β-endpoint energy; deduced Q(EC), log ft, β-strength function. ⁹³Tc deduced proton decaying level J, π, level density.

NUCLEAR REACTIONS ⁹²Mo(p, γ), E=2.2-2.7 MeV; measured thick target γ-yield, Eγ, Iγ, proton binding energy.

doi: 10.1016/0375-9474(83)90410-4
Citations: PlumX Metrics

1983AY02      Phys.Scr. T5, 193 (1983)

J.Aysto, P.Taskinen, K.Eskola, K.Vierinen, S.Messelt

Studies of Weak Beta-Delayed Protons Emitted in the Decay of Odd-Z, T(z) = -(3/2) Nuclei

RADIOACTIVITY ²⁷P(β⁺p) [from ²⁸Si(p, 2n), E=34 MeV; ²⁷Al(³He, 3n), E=44 MeV]; ³¹Cl(β⁺p) [from ³²S(p, 2n), E=34 MeV]; measured β-delayed Ep, Ip. ²⁷P deduced total delayed proton branching. ³⁷Cl deduced T_1/2, total delayed proton branching.

1982AY01      Phys.Lett. 110B, 437 (1982)

J.Aysto, J.Honkanen, K.Vierinen, A.Hautojarvi, K.Eskola, S.Messelt

Observation of Beta-Delayed Protons in the Decay of ³¹Cl

RADIOACTIVITY ³¹Cl [from ³²S(p, 2n), E=33 MeV]; measured β-delayed Ep, Ip, Eα, Iα; deduced T_1/2, log ft. ³¹S deduced level, possible J, π. Helium jet system, ZnS targets.

doi: 10.1016/0370-2693(82)91033-4
Citations: PlumX Metrics

1982RE16      Phys.Lett. 117B, 384 (1982)

J.Rekstad, A.Henriquez, F.Ingebretsen, G.Midttun, B.Skaali, R.Oyan, R.Haugland, S.Messelt, T.F.Thorsteinsen, G.Lovhoiden, L.P.Ekstrom

The Variation in γ-Ray Multiplicity with Nuclear Temperature Studied in ¹⁶⁰Dy

NUCLEAR REACTIONS ¹⁶¹Dy(³He, α), E=26 MeV; measured σ(Eα), αγ-coin, γ multiplicity. ¹⁶⁰Dy deduced level density parameter.

doi: 10.1016/0370-2693(82)90564-0
Citations: PlumX Metrics

1981HJ01      Z.Phys. A301, 35 (1981)

S.A.Hjorth, A.Johnson, A.Kerek, W.Klamra, Th.Lindblad, S.Messelt, C.Pomar, W.Walus, O.Skeppstedt, Z.Sujkowski, A.Zglinski, L.Carlen, H.Ryde, M.Piiparinen

On the Decay of Compound Nuclei following Alpha-Particle and ¹²C Induced Reactions

NUCLEAR REACTIONS ¹⁹²Os, ¹²²Te, ¹⁶⁶Er(α, 3n), (α, 4n), (α, 5n), E=51-55 MeV; ¹⁷⁶Yb, ¹⁶⁴Dy (¹²C, 8n), (¹²C, 6nα), ¹⁶⁰Gd, ¹⁶⁴Dy(¹²C, 6n), (¹²C, 7n), ¹⁶⁰Gd(¹²C, 8n), E=118 MeV; measured Eγ, Iγ, γγ-coin; deduced average multiplicity, average side feeding multiplicity, multiplicity distribution second moment. ¹⁸⁰Os, ^170,169,168Hf, ¹⁶⁶Yb, ¹⁹²Pt, ¹²²Xe deduced spin distribution, decay mechanism. Statistical model calculations. Ge(Li), NaI(Tl) detectors.

doi: 10.1007/BF01412461
Citations: PlumX Metrics

1970ME30      Phys.Norv. 4, 191 (1970)

S.Messelt

Elastic and Inelastic Scattering of 7 to 11 MeV Protons from ¹⁴N

NUCLEAR REACTIONS ¹⁴N(p, p), (p, p'), E=7-11 MeV; measured σ(E;θ); deduced optical model parameters. ¹⁴N(p, α), (p, ³He), E=7-11 MeV; measured σ(E;θ). ¹⁵O deduced resonances, J.

1969JO09      Phys.Rev. 178, 1663 (1969)

J.Jobst, S.Messelt, H.T.Richards

Isospin-Forbidden ¹⁶O(d, α₁)¹⁴N Reaction

NUCLEAR REACTIONS ¹⁶O(d, α)¹⁴N, E=3-15 MeV; measured σ(E;θ). ¹⁸F deduced resonances, J, π.

doi: 10.1103/PhysRev.178.1663
Citations: PlumX Metrics

1966KN01      Phys.Rev. 148, 1031 (1966); Erratum Phys.Rev. 165, 1390 (1968)

D.J.Knecht, P.F.Dahl, S.Messelt

Proton-Proton Scattering: Revision and Analysis of Experimental Measurements from 1.4 to 3.0 MeV

NUCLEAR STRUCTURE ¹H; measured not abstracted; deduced nuclear properties.

doi: 10.1103/PhysRev.148.1031
Citations: PlumX Metrics

1963ME12      Nucl.Phys. 48, 512 (1963)

S.Messelt

Neutron Spectra from Breakup of Deuterons by 14.7 MeV Neutrons

NUCLEAR STRUCTURE ²H; measured not abstracted; deduced nuclear properties.

doi: 10.1016/0029-5582(63)90188-3
Citations: PlumX Metrics

1959KN50      Phys.Rev. 114, 550 (1959)

D.J.Knecht, S.Messelt, E.D.Berners, L.C.Northcliffe

Proton-Proton Scattering from 1.4 to 2.4 MeV

doi: 10.1103/PhysRev.114.550
Citations: PlumX Metrics

1958KN51      Bull.Am.Phys.Soc. 3, No.3, 203, R1 (1958)

D.J.Knecht, S.Messelt, E.D.Berners, L.C.Northcliffe

Proton-Proton Scattering at 1855 keV