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NSR database version of April 11, 2024.

Search: Author = P.M.Stwertka

Found 21 matches.

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1990SZ05      Phys.Rev. C41, 2164 (1990)

E.M.Szanto, R.Liguori Neto, M.C.S.Figueira, A.Szanto de Toledo, M.G.Herman, N.G.Nicolis, P.M.Stwertka, T.M.Cormier

Search for Valence Proton Effects in Sub-Barrier Fusion Reactions

NUCLEAR REACTIONS, ICPND ⁵⁰Ti, ⁵¹V, ^52,54Cr, ⁵⁴Fe(³⁵Cl, X), E(cm) ≈ 50-80 MeV; measured fusion, residual production σ(E); deduced valence proton effects role.

doi: 10.1103/PhysRevC.41.2164
Citations: PlumX Metrics

1988HU01      Phys.Rev. C37, 118 (1988)

U.J.Huttmeier, C.J.Gross, D.M.Headly, E.F.Moore, S.L.Tabor, T.M.Cormier, P.M.Stwertka, W.Nazarewicz

Level Structure of ⁸³Zr

NUCLEAR REACTIONS ⁵⁴Fe(³²S, n2p), E=105-115 MeV; measured Eγ, Iγ(θ), nγ-, (X-ray)γ-, γγ-coin. ⁸³Zr deduced levels, π, J, T_1/2, rotational bands, band crossings. Compton suppressed Ge detectors.

NUCLEAR STRUCTURE ⁸³Zr; calculated deformation, Routhians. Woods-Saxon cranking model.

doi: 10.1103/PhysRevC.37.118
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1986NI07      Phys.Lett. 178B, 339 (1986)

N.G.Nicolis, T.M.Cormier, P.M.Stwertka, M.G.Herman

Angular-Momentum Limitations in the High-Spin Gamma-Decay of Medium-Mass Evaporation Residues

NUCLEAR REACTIONS, ICPND ⁵⁴Fe(²⁸Si, X)⁸⁰Sr/⁷⁹Sr/⁷⁸Sr/⁷⁹Rb/⁷⁶Kr/⁷⁸Kr/⁷⁴Kr, E=75-145 MeV; measured γ-ray multiplicity, evaporation residue σ(E). NaI γ-ray multiplicity filter. Statistical model calculations.

doi: 10.1016/0370-2693(86)91390-0
Citations: PlumX Metrics
Data from this article have been entered in the EXFOR database. For more information, access X4 datasetA0359.

1985PI02      Phys.Rev. C31, 456 (1985)

W.F.Piel, Jr., P.Chowdhury, U.Garg, M.A.Quader, P.M.Stwertka, S.Vajda, D.B.Fossan

Collective Structures in the Odd-Z Transitional Nuclei ^115,117I and ^121,123Sb

NUCLEAR REACTIONS ¹⁰⁶Cd(¹²C, 2np), E=58-63 MeV; ¹⁰⁶Cd(¹⁴N, n2p), E=62 MeV; ¹¹²Sn(¹²C, 2npα), E=86 MeV; ^120,122Sn(⁷Li, 2nα), E=27 MeV; measured γγ-coin, γ(θ), γ(t). ^115,117I, ^121,123Sb deduced levels, J, π, T_1/2. Enriched targets, Ge(Li), Ge detectors.

doi: 10.1103/PhysRevC.31.456
Citations: PlumX Metrics

1985ST01      Phys.Lett. 150B, 91 (1985)

P.M.Stwertka, T.M.Cormier, M.Herman, N.G.Nicolis

Inhibition of Nucleon Decay from High Spin Nuclei near the N = 82 Shell Closure

NUCLEAR REACTIONS ^124,118,112Sn(²⁸Si, X), E ≈ 100-180 MeV; measured fusion σ(E); deduced average neutron multiplicity. Statistical model comparison.

doi: 10.1016/0370-2693(85)90145-5
Citations: PlumX Metrics

1985ST06      Phys.Rev.Lett. 54, 1635 (1985)

P.M.Stwertka, T.M.Cormier, M.G.Herman, N.G.Nicolis

High-Spin Evolution of Quasicontinuum γ Radiation in ¹⁵⁶Er

NUCLEAR REACTIONS ¹²⁸Te(³²S, 4n), E=135-156 MeV; measured Eγ, Iγ, γ-multiplicity, γ(θ). ¹⁵⁶Er deduced spin, energy correlated high J transitions.

doi: 10.1103/PhysRevLett.54.1635
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1985ST21      Phys.Lett. 161B, 70 (1985)

P.M.Stwertka, T.M.Cormier, N.G.Nicolis, M.G.Herman

The Onset of Collectivity in Nuclei near the N = 82, Z = 64 Double Closed Shell

NUCLEAR REACTIONS ^122,124Sn(²⁸Si, xn), E=120-126 MeV; measured quasicontinuum Eγ, Iγ, γ-multiplicities. ^{145,146,147,148}Gd deduced spin-energy correlated rotational transitions, collective behavior J dependence.

doi: 10.1016/0370-2693(85)90611-2
Citations: PlumX Metrics

1985WE10      J.Phys.(London) G11, L173 (1985)

S.Wen, A.V.Ramayya, S.J.Robinson, C.F.Maguire, W.C.Ma, X.Zhao, T.M.Cormier, P.M.Stwertka, J.D.Cole, E.F.Zganjar, R.B.Piercey, M.A.Herath-Banda, J.Eberth, M.Wiosna

First Cascades in ⁷³Br and High-Spin States in ⁷⁵Br

NUCLEAR REACTIONS ⁵⁴Fe(²⁸Si, xnyp), E=128 MeV; measured Eγ, Iγ, γ(fragment)-coin. ^73,75Br deduced levels, J, π, γ-branching, band structure.

doi: 10.1088/0305-4616/11/9/007
Citations: PlumX Metrics

1984CO26      Phys.Rev. C30, 1953 (1984)

T.M.Cormier, P.M.Stwertka, M.Herman, N.G.Nicolis

Internal Conversion and the Evolution of Nuclear Structure at very High Spin: ^154-158Er

NUCLEAR REACTIONS ^126,128,130Te(³²S, xn)(³⁴S, xn)¹⁵⁴Er/¹⁵⁵Er/¹⁵⁶Er/¹⁵⁷Er/¹⁵⁸Er, E=130-160 MeV; measured residuals atomic charge state distributions. ^{154,155,156,157,158}Er deduced internal conversion probability vs unit spin, critical spin enhancement, rotational structure characteristics.

doi: 10.1103/PhysRevC.30.1953
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1984CO27      Phys.Rev. C30, 2092 (1984)

M.M.Coimbra, N.Carlin Filho, A.Szanto de Toledo, P.M.Stwertka, M.G.Herman, N.G.Nicolis, T.M.Cormier

Use of Energy-Averaged Cross Sections for Nuclear Spectroscopy: ²⁶Mg states in the continuum

NUCLEAR REACTIONS ¹²C(¹⁸O, α), E=46-50 MeV: measured σ(Eα), σ(θ); deduced energy averaged σ. ²⁶Mg deduced continuum states.

doi: 10.1103/PhysRevC.30.2092
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC0219.

1984FU02      Phys.Lett. 136B, 322 (1984)

B.R.Fulton, J.S.Lilley, R.Lindsay, M.A.Nagarajan, N.Rowley, R.Shyam, T.M.Cormier, P.M.Stwertka

Structure in the 0₂⁺ Excitation Function in ¹²C + ¹²C Scattering

NUCLEAR REACTIONS, ICPND ¹²C(¹²C, ¹²C'), E(cm)=20-40 MeV; measured σ(E), σ(θ); deduced barrier matching, barrier, internal wave interference effects. DWBA, no resonance contribution.

doi: 10.1016/0370-2693(84)92012-4
Citations: PlumX Metrics

1984SZ05      Phys.Rev. C30, 1706 (1984)

A.Szanto de Toledo, T.M.Cormier, M.M.Coimbra, N.Carlin Filho, P.M.Stwertka, N.G.Nicolis

²⁴Mg Yrast Sequence up to 30 MeV Excitation

NUCLEAR REACTIONS ¹²C(¹⁶O, α), E=94, 97 MeV; measured σ(θ), σ(Eα). ²⁴Mg deduced yrast sequence, effective moment of inertia.

doi: 10.1103/PhysRevC.30.1706
Citations: PlumX Metrics

1983CO13      Nucl.Instrum.Methods 212, 185 (1983)

T.M.Cormier, M.G.Herman, B.S.Lin, P.M.Stwertka

Performance of a Recoil Mass Spectrometer

NUCLEAR REACTIONS ⁵⁸Ni(³⁵Cl, X), E=120 MeV; ¹²⁰Sn(³⁵Cl, X), E=138 MeV; measured σ(evaporation residue) vs mass. Recoil mass spectrometer.

doi: 10.1016/0167-5087(83)90690-7
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1983CO14      Phys.Rev.Lett. 51, 542 (1983)

T.M.Cormier, P.M.Cormier, M.Herman, N.G.Nicolis, P.M.Stwertka

Atomic-Charge-State Distributions of Fusion-Evaporation Residues and Nuclear Shape Changes at High Spin

NUCLEAR REACTIONS ^126,128,130Te(³²S, xn), (³⁴S, xn), E=120-170 MeV; measured evaporation residue atomic charge state distribution. ^158,156Er deduced internal conversion probability, shape spin dependences. Recoil mass spectrometry.

doi: 10.1103/PhysRevLett.51.542
Citations: PlumX Metrics

1983FU03      Phys.Rev. C27, 1811 (1983)

B.R.Fulton, J.S.Lilley, T.M.Cormier, P.M.Stwertka

Search for Resonant Behavior in ¹⁶O + ²⁴Mg Inelastic Scattering

NUCLEAR REACTIONS ²⁴Mg(¹⁶O, ¹⁶O'), E=41.6-65.6 MeV; measured σ(θ) vs E; deduced no structure.

doi: 10.1103/PhysRevC.27.1811
Citations: PlumX Metrics

1982ST11      Phys.Rev.Lett. 49, 640 (1982)

P.M.Stwertka, T.M.Cormier, M.Herman, N.Nicolis, A.Szanto de Toledo, M.M.Coimbra, N.Carlin Filho

Kinematics of the Gross Structures in the α Spectrum of the ¹⁶O + ¹²C Reaction

NUCLEAR REACTIONS ¹²C(¹⁶O, α), E=94-150 MeV; measured σ(Eα) vs E; deduced reaction mechanism. ²⁴Mg deduced narrow, closely spaced levels. Kinematic analysis, inclusive reactions.

doi: 10.1103/PhysRevLett.49.640
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1981SZ05      Phys.Rev.Lett. 47, 632 (1981)

A.Szanto de Toledo, M.M.Coimbra, N.Carlin Filho, T.M.Cormier, P.M.Stwertka

Interpretation of Gross Structures in the Energy Spectra of the Reaction ¹²C(¹⁶O, α)²⁴Mg

NUCLEAR REACTIONS ¹²C(¹⁶O, α), E=48.8, 54.2, 58.6, 55, 60, 65 MeV; measured σ(Eα, θ). ²⁴Mg deduced yrast sequence. Si surface barrier detector telescopes.

doi: 10.1103/PhysRevLett.47.632
Citations: PlumX Metrics

1981SZ06      Phys.Rev.Lett. 47, 1881 (1981)

A.Szanto de Toledo, T.M.Cormier, M.Herman, B.Lin, P.M.Stwertka, M.M.Coimbra, N.C.Filho

Limiting Angular Momenta for Light Heavy-Ion Fusion at High Energy

NUCLEAR REACTIONS ¹²C(¹⁶O, α), E=28.5-100 MeV; measured σ(θ); deduced no low-L cut off. Legendre polynomial analysis.

doi: 10.1103/PhysRevLett.47.1881
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1981SZ07      Fizika(Zagreb) 13, Suppl.No.1, 29 (1981)

A.Szanto de Toledo, M.M.Coimbra, N.C.Filho, T.M.Cormier, P.M.Stwertka

An Interpretation of Gross Structures in the Energy Spectra of the ¹²C(¹⁶O, α)²⁴Mg Reactions

NUCLEAR REACTIONS ¹²C(¹⁶O, α), E=48.8, 54.2, 58.6, 55, 65 MeV; measured σ(θ), σ(Eα); deduced broad structures, angular momentum matching. ²⁴Mg deduced selective yrast cluster population.

1980AN16      Phys.Rev. C22, 501 (1980)

N.Anantaraman, H.W.Fulbright, P.M.Stwertka

Variation of Ground-State α-Particle Strengths for sd- and fp-Shell Nuclei

NUCLEAR REACTIONS ¹⁶O, ²⁸Si, ⁴⁰Ca, ⁵⁶Fe, ⁶⁰Ni, ⁹⁰Zr(⁶Li, ⁶Li), E=28, 32 MeV; ¹⁶O, ²⁸Si, ⁴⁰Ca(⁶Li, d), E=32 MeV; ⁶⁰Ni(⁶Li, d), E=28 MeV; measured σ(θ); ²⁰Ne, ³²S, ⁴⁴Ti, ⁶⁴Zn level deduced Sα. DWBA analysis.

doi: 10.1103/PhysRevC.22.501
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1979AN05      Nucl.Phys. A318, 517 (1979)

N.Anantaraman, A.M.Bastawros, C.L.Bennett, H.W.Fulbright, P.M.Stwertka

A Study of the ⁵¹V(⁶Li, d)⁵⁵Mn Reaction

NUCLEAR REACTIONS ⁵¹V(⁶Li, d), E=32 MeV; measured σ(Ed, θ). ⁵⁵Mn levels deduced Sα. DWBA analysis. Shell-model calculation of strengths. Natural target.

doi: 10.1016/0375-9474(79)90664-X
Citations: PlumX Metrics