NSR Query Results

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NSR database version of April 27, 2024.

Search: Author = S.L.Hammond

Found 10 matches.

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2017TO16      Phys.Lett. B 773, 20 (2017)

A.P.Tonchev, N.Tsoneva, C.Bhatia, C.W.Arnold, S.Goriely, S.L.Hammond, J.H.Kelley, E.Kwan, H.Lenske, J.Piekarewicz, R.Raut, G.Rusev, T.Shizuma, W.Tornow

Pygmy and core polarization dipole modes in ²⁰⁶Pb: Connecting nuclear structure to stellar nucleosynthesis

NUCLEAR REACTIONS ²⁰⁸Pb(γ, γ'), E=4.9-8.1 MeV; analyzed available data; deduced a range for the neutron-skin thickness of and a corresponding range for the slope of the symmetry energy, Maxwellian-averaged radiative σ.

doi: 10.1016/j.physletb.2017.07.062
Citations: PlumX Metrics

2013RU01      Phys.Rev.Lett. 110, 022503 (2013)

G.Rusev, N.Tsoneva, F.Donau, S.Frauendorf, R.Schwengner, A.P.Tonchev, A.S.Adekola, S.L.Hammond, J.H.Kelley, E.Kwan, H.Lenske, W.Tornow, A.Wagner

Fine Structure of the Giant M1 Resonance in ⁹⁰Zr

NUCLEAR REACTIONS ⁹⁰Zr(γ, γ'), E=7-11 MeV; measured reaction products, Eγ, Iγ; deduced dipole excitations, 1⁺ states, fine structure of the giant M1 resonance, B(M1). Comparison with three-phonon QPM calculations.

doi: 10.1103/PhysRevLett.110.022503
Citations: PlumX Metrics

2012AN13      Phys.Rev. C 86, 051302 (2012); Erratum Phys.Rev. C 91, 039901 (2015)

C.T.Angell, S.L.Hammond, H.J.Karwowski, J.H.Kelley, M.Krticka, E.Kwan, A.Makinaga, G.Rusev

Evidence for radiative coupling of the pygmy dipole resonance to excited states

NUCLEAR REACTIONS ¹⁴²Nd(γ, n), E=9.86-13.3 MeV; ¹⁴²Nd(polarized γ, γ'), E=4.2-9.7 MeV; measured Eγ, Iγ, branching ratio, σ(E) using High Intensity γ-ray Source (HIγS) at TUNL for (γ, γ'), and quasimonoenergetic γ-ray source at Tsukuba; deduced two distinct PDR peaks. Comparison with statistical-model calculations. Violation of Brink hypothesis.

doi: 10.1103/PhysRevC.86.051302
Citations: PlumX Metrics
Data from this article have been entered in the EXFOR database. For more information, access X4 datasetK2403.

2012HA12      Phys.Rev. C 85, 044302 (2012)

S.L.Hammond, A.S.Adekola, C.T.Angell, H.J.Karwowski, E.Kwan, G.Rusev, A.P.Tonchev, W.Tornow, C.R.Howell, J.H.Kelley

Dipole response of ²³⁸U to polarized photons below the neutron separation energy

NUCLEAR REACTIONS ²³⁸U(polarized γ, γ'), E=2.0-6.2 MeV; measured Eγ, Iγ, γ(θ), γ(linear pol), integrated cross sections using HIγS facility at TUNL. ²³⁸U; deduced levels, J, π, multipolarity, widths, branching ratios, B(M1), B(E1), total γ-ray interaction cross section for E1. Systematics of E1 and M1 strengths for ²³²Th, ^236,238U. Comparison with QRPA calculations.

doi: 10.1103/PhysRevC.85.044302
Citations: PlumX Metrics
Data from this article have been entered in the EXFOR database. For more information, access X4 datasetL0170. Data from this article have been entered in the XUNDL database. For more information, click here.

2011AD02      Phys.Rev. C 83, 034615 (2011)

A.S.Adekola, C.T.Angell, S.L.Hammond, A.Hill, C.R.Howell, H.J.Karwowski, J.H.Kelley, E.Kwan

Discovery of low-lying E1 and M1 strengths in ²³²Th

NUCLEAR REACTIONS ²³²Th(γ, γ'), E=2-4 MeV; measured Eγ, Iγ, γγ(θ), integrated σ using HIγS facility; deduced widths. ²³²Th; deduced levels, J, π, multipolarity, B(M1), B(E1), branching ratios. Comparison of scissors mode summed B(M1) strengths with those in ²³²Th, ^235,236,238U, and with predictions of quasiparticle random-phase approximation (QRPA).

doi: 10.1103/PhysRevC.83.034615
Citations: PlumX Metrics
Data from this article have been entered in the EXFOR database. For more information, access X4 datasetL0159. Data from this article have been entered in the XUNDL database. For more information, click here.

2011KW01      Phys.Rev. C 83, 041601 (2011)

E.Kwan, G.Rusev, A.S.Adekola, F.Donau, S.L.Hammond, C.R.Howell, H.J.Karwowski, J.H.Kelley, R.S.Pedroni, R.Raut, A.P.Tonchev, W.Tornow

Discrete deexcitations in ²³⁵U below 3 MeV from nuclear resonance fluorescence

NUCLEAR REACTIONS ²³⁵U(γ, γ'), E=1.6-3.0 MeV; measured Eγ, Iγ, γγ-coin, integrated cross sections, and widths using HIγS facility. ²³⁵U; deduced levels, J, π, branching ratios. Comparison with quasiparticle random-phase approximation in deformed basis for dipole transitions.

doi: 10.1103/PhysRevC.83.041601
Citations: PlumX Metrics
Data from this article have been entered in the EXFOR database. For more information, access X4 datasetL0161. Data from this article have been entered in the XUNDL database. For more information, click here.

2011RU15      J.Phys.:Conf.Ser. 312, 092053 (2011)

G.Rusev, A.S.Adekola, F.Donau, S.Frauendorf, S.L.Hammond, C.Huibregtse, J.H.Kelley, E.Kwan, R.Schwengner, A.P.Tonchev, W.Tornow, A.Wagner

Fine structure of the giant M1 resonance in ⁹⁰Zr

NUCLEAR REACTIONS ⁹⁰Zr(polarized γ, γ'), E=7-11 MeV; measured Eγ, Iγ(θ) using HPGe; deduced B(M1) fine structure; calculated B(M1) fine structure using shell model and QRPA.

doi: 10.1088/1742-6596/312/9/092053
Citations: PlumX Metrics

2011TO17      J.Phys.:Conf.Ser. 312, 092058 (2011)

A.P.Tonchev, S.L.Hammond, J.H.Kelley, E.Kwan, H.Lenske, R.Raut, G.Rusev, W.Tornow, N.Tsoneva

Coarse and Fine Structure of the Pygmy Dipole Resonance

NUCLEAR REACTIONS ¹³⁸Ba(polarized γ, γ), (polarized γ, γ'), E=5.4, 7.2, 8.5 MeV; measured Eγ, Iγ(θ) using HPGe with nuclear resonance fluorescence; deduced σ, M1, E1 asymmetry, GDR, PDR photoabsorption σ, E1 ground-state γ transition strength, resonant-shape; calculated E1, M1 γ transition strength distribution using QPM.

doi: 10.1088/1742-6596/312/9/092058
Citations: PlumX Metrics

2010TO01      Phys.Rev.Lett. 104, 072501 (2010)

A.P.Tonchev, S.L.Hammond, J.H.Kelley, E.Kwan, H.Lenske, G.Rusev, W.Tornow, N.Tsoneva

Spectral Structure of the Pygmy Dipole Resonance

NUCLEAR REACTIONS ¹³⁸Ba(γ, γ), (γ, γ'), E ≈ below one-neutron separation energy; measured Eγ, Iγ; deduced σ, energy levels, B(E1), B(M1). Comparison with QPM calculations.

doi: 10.1103/PhysRevLett.104.072501
Citations: PlumX Metrics
Data from this article have been entered in the EXFOR database. For more information, access X4 datasetL0151.

2010TO09      Phys.Rev. C 82, 054620 (2010)

A.P.Tonchev, S.L.Hammond, C.R.Howell, C.Huibregtse, A.Hutcheson, J.H.Kelley, E.Kwan, R.Raut, G.Rusev, W.Tornow, T.Kawano, D.J.Vieira, J.B.Wilhelmy

Measurement of the ²⁴¹Am(γ, n)²⁴⁰Am reaction in the giant dipole resonance region

NUCLEAR REACTIONS ²⁴¹Am(γ, n), E=9.0-15.6 MeV; measured Eγ, Iγ, σ using HIγS facility. Giant dipole resonance region. Comparison with previous measurements and statistical nuclear-model calculations.

doi: 10.1103/PhysRevC.82.054620
Citations: PlumX Metrics
Data from this article have been entered in the EXFOR database. For more information, access X4 datasetL0156.