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NSR database version of March 18, 2024.

Search: Author = L.A.Riley

Found 61 matches.

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2024CO04      Nucl.Instrum.Methods Phys.Res. A1058, 168827 (2024)

A.L.Conley, B.Kelly, M.Spieker, R.Aggarwal, S.Ajayi, L.T.Baby, S.Baker, C.Benetti, I.Conroy, P.D.Cottle, I.B.D'Amato, P.DeRosa, J.Esparza, S.Genty, K.Hanselman, I.Hay, M.Heinze, D.Houlihan, M.I.Khawaja, P.S.Kielb, A.N.Kuchera, G.W.McCann, A.B.Morelock, E.Lopez-Saavedra, R.Renom, L.A.Riley, G.Ryan, A.Sandrik, V.Sitaraman, E.Temanson, M.Wheeler, C.Wibisono, I.Wiedenhover

The CeBrA demonstrator for particle-γ coincidence experiments at the FSU Super-Enge Split-Pole Spectrograph

NUCLEAR REACTIONS 49Ti, 61Ni, 52Cr, 34S(d, p), E=16 MeV; measured reaction products, Eγ, Iγ, particle-γ-coin.; deduced γ-ray energies and relative intensities, excited states lifetimes. Comparison with available data. The CeBrA demonstrator for particle-γ coincidence experiments at the Super-Enge Split-Pole Spectrograph of the John D. Fox Superconducting Linear Accelerator Laboratory at Florida State University.

doi: 10.1016/j.nima.2023.168827
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2024HA06      Phys.Rev. C 109, 024302 (2024)

I.C.S.Hay, P.D.Cottle, L.A.Riley, L.T.Baby, S.Baker, A.L.Conley, J.Esparza, K.Hanselman, M.Heinze, D.Houlihan, B.Kelly, K.W.Kemper, G.W.McCann, R.Renom, A.Sandrik, D.Simms, M.Spieker, I.Wiedenhover

Measurement of g9/2 strength in the stretched 8- state and other negative parity states via the 51V(d, p)52V reaction

doi: 10.1103/PhysRevC.109.024302
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2024SP01      Phys.Rev. C 109, 014307 (2024)

M.Spieker, D.Bazin, S.Biswas, P.D.Cottle, P.J.Farris, A.Gade, T.Ginter, S.Giraud, K.W.Kemper, J.Li, S.Noji, J.Pereira, L.A.Riley, M.K.Smith, D.Weisshaar, R.G.T.Zegers

Proton removal from 73, 75Br to 72, 74Se at intermediate energies

doi: 10.1103/PhysRevC.109.014307
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2023RI03      Phys.Rev. C 108, 044306 (2023)

L.A.Riley, D.T.Simms, L.T.Baby, A.L.Conley, P.D.Cottle, J.Esparza, K.Hanselman, I.C.S.Hay, M.Heinze, B.Kelly, K.W.Kemper, G.W.McCann, R.Renom, M.Spieker, I.Wiedenhover

g9/2 neutron strength in the N=29 isotones and the 52Cr(d, p)53Cr reaction

doi: 10.1103/PhysRevC.108.044306
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2023SP02      Phys.Lett. B 841, 137932 (2023)

M.Spieker, S.E.Agbemava, D.Bazin, S.Biswas, P.D.Cottle, P.J.Farris, A.Gade, T.Ginter, S.Giraud, K.W.Kemper, J.Li, W.Nazarewicz, S.Noji, J.Pereira, L.A.Riley, M.Smith, D.Weisshaar, R.G.T.Zegers

Hexadecapole strength in the rare isotopes 74, 76Kr

NUCLEAR REACTIONS 1H(74Kr, 74Kr'), (76Kr, 76Kr'), E(cm)=100 MeV, [secondary 74,76Kr beams from 9Be(78Kr, X), E=150 MeV/nucleon primary reaction, followed by separation of fragments using A1900 separator]; measured Doppler-corrected Eγ, Iγ, (particle)γ-coin using NSCL-MSU using NSCL/Ursinus Liquid Hydrogen (LH2) Target, eight GRETINA modules of 36-fold segmented HPGe detectors for γ radiation, and S800 spectrograph for projectile-like reaction residues. 74,76Kr; deduced levels, Jπ, β2 for the first 2+ state and β4 and B(E4)(W.u.) for the first 4+ state from inelastic proton scattering experiments in inverse kinematics. Comparison to coupled-channels calculations, and nuclear density functional theory (DFT) calculations using the Skyrme SkM* and UNEDF1 energy density functionals, covariant NL3* and DD-PC1 energy density functionals. Systematics and theoretical predictions of β2, β4 and B(E4)(W.u.) for 74,76,78,80,82,84,86Kr.

doi: 10.1016/j.physletb.2023.137932
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2022RI07      Phys.Rev. C 106, 064308 (2022)

L.A.Riley, I.C.S.Hay, L.T.Baby, A.L.Conley, P.D.Cottle, J.Esparza, K.Hanselman, B.Kelly, K.W.Kemper, K.T.Macon, G.W.McCann, M.W.Quirin, R.Renom, R.L.Saunders, M.Spieker, I.Wiedenhover

54Fe(d, p)55Fe and the evolution of single neutron energies in the N=29 isotones

NUCLEAR REACTIONS 54Fe(d, p), E=16 MeV; measured Ep, Ip, angular distribution. 55Fe; deduced levels, J, π, spectroscopic factors, single-neutron energies for the 2p3/2, 2p1/2, 1f5/2, 1g9/2 and 2d5/2 orbits, spin-orbit splitting. Comparison with calculations made in the framework of covariant density functional theory using the covariant energy density functional FSUGarnet. Systematics of single-neutron energy for N=28 isotones (49Ca, 51Ti, 53Cr, 55Fe, 57Ni). Super-Enge Split-Pole Spectrograph at 9MV Super FN Tandem Van de Graaff Accelerator at the John D. Fox Laboratory (FSU).

doi: 10.1103/PhysRevC.106.064308
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2022SP04      Phys.Rev. C 106, 054305 (2022)

M.Spieker, L.A.Riley, P.D.Cottle, K.W.Kemper, D.Bazin, S.Biswas, P.J.Farris, A.Gade, T.Ginter, S.Giraud, J.Li, S.Noji, J.Pereira, M.Smith, D.Weisshaar, R.G.T.Zegers

Investigation of octupole collectivity near the A = 72 shape-transitional point

NUCLEAR REACTIONS 1H(76Kr, p), (74Kr, p), (72Se, p), E(cm)≈ 100 MeV/nucleon; measured Eγ, Iγ, γγ-coin, angular distribution; deduced levels, J, π, B(E2), B(E3). Comparison to theoretical calculations performed in the framework of the configuration-mixing sdf IBM mapping approach. Systematics of B(E3) transition strength in Kr, Se and Ge isotopes. Established two regions of distinct octupole strengths with a sudden strength increase around the A = 72 prolate-oblate-triaxial shape-transitional point. Ursinus liquid hydrogen target coupled to 8 GRETINA modules, containing four, 36-fold segmented HPGe detectors each. Beams produced from a 150-MeV/nucleon 78Kr primary beam in projectile fragmentation on 9Be target at Coupled Cyclotron Facility NSCL.

doi: 10.1103/PhysRevC.106.054305
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2021RI08      Phys.Rev. C 103, 064309 (2021)

L.A.Riley, J.M.Nebel-Crosson, K.T.Macon, G.W.McCann, L.T.Baby, D.Caussyn, P.D.Cottle, J.Esparza, K.Hanselman, K.W.Kemper, E.Temanson, I.Wiedenhover

50Ti(d, p)51Ti: Single-neutron energies in the N=29 isotones, and the N=32 subshell closure

NUCLEAR REACTIONS 50Ti(d, p)51Ti, E=16 MeV; measured E(p), I(p), σ(θ) using the Super Enge Split-Pole Spectrograph (SPS) spectrometer at the J. D. Fox Laboratory at Florida State University. 51Ti; deduced levels, J, L-transfers, spectroscopic factors, s3/2, s1/2, and d5/2 single-neutron energy centroids and compared with covariant density functional theory calculations. Adiabatic distorted wave approximation (ADW) and DWBA calculations using global optical potentials.

doi: 10.1103/PhysRevC.103.064309
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2638.


2020CO08      Eur.Phys.J. A 56, 256 (2020)

P.D.Cottle, K.W.Kemper, L.A.Riley

Jacque Raynal, ECIS, and Mn/Mp values in radioactive nuclei

NUCLEAR STRUCTURE 20O, 42Si, 44S, 46Ar, 48Ca; analyzed available data on ratios of neutron to proton transition matrix elements; calculated matrix elements using ECIS code.

doi: 10.1140/epja/s10050-020-00250-5
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2019GA01      Phys.Rev. C 99, 011301 (2019)

A.Gade, R.V.F.Janssens, J.A.Tostevin, D.Bazin, J.Belarge, P.C.Bender, S.Bottoni, M.P.Carpenter, B.Elman, S.J.Freeman, T.Lauritsen, S.M.Lenzi, B.Longfellow, E.Lunderberg, A.Poves, L.A.Riley, D.K.Sharp, D.Weisshaar, S.Zhu

Structure of 70Fe: Single-particle and collective degrees of freedom

NUCLEAR REACTIONS 9Be(71Co, 70Fe), E=87 MeV/nucleon, [secondary 71Co beam from 9Be(82Se, X), E=140 MeV/nucleon primary reaction, followed by separation of 71Co ions using A1900 fragment separator]; measured Eγ, Iγ, (70Fe ions)γ- and γγ-coin, residue energy loss and time of flight, σ for one-proton removal, level half-lives by line-shape analysis using GRETINA array for γ detection and the S800 spectrograph for particle identification at the NSCL-MSU facility. 70Fe; deduced levels, J, π, . Comparison with LNPS large-scale shell-model calculations.

doi: 10.1103/PhysRevC.99.011301
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Data from this article have been entered in the XUNDL database. For more information, click here.


2019RI03      Phys.Rev. C 100, 044312 (2019); Erratum Phys.Rev. C 101, 059902 (2020)

L.A.Riley, D.Bazin, J.Belarge, P.C.Bender, B.A.Brown, P.D.Cottle, B.Elman, A.Gade, S.D.Gregory, E.B.Haldeman, K.W.Kemper, B.R.Klybor, M.A.Liggett, S.Lipschutz, B.Longfellow, E.Lunderberg, T.Mijatovic, J.Pereira, L.M.Skiles, R.Titus, A.Volya, D.Weisshaar, J.C.Zamora, R.G.T.Zegers

Inverse-kinematics proton scattering from 42, 44S, 41, 43P, and the collapse of the N=28 major shell closure

NUCLEAR REACTIONS 1H(42S, 42S'), E=62 MeV/nucleon; 1H(44S, 44S'), E=70 MeV/nucleon; 1H(41P, 41P'), E=58 MeV/nucleon; 1H(43P, 43P'), E=65 MeV/nucleon, [secondary 42,44S, 41,43P beams from 9Be(48Ca, X), E=140 MeV/nucleon followed by separation using A1900 fragment separator at NSCL-MSU]; measured reaction products, Eγ, Iγ, (particle)γ-coin using S-800 high resolution magnetic spectrograph, and GRETINA array. 42,44S, 41,43P; deduced levels, J, π, scattering σ, deformation lengths and ratio of neutron-to-proton transition matrix elements for 42,44S. Optical model analysis. Comparison with shell-model calculations using SDPF-U and SDPF-MU interactions, and with previous experimental results. Systematics of deformation lengths in 36,38,40,42,44S. Systematics of ratios of neutron to proton transition matrix elements in 42,44,48,50Ca, 40,42,44,46Ar, 36,38,40,42,44,46S, 36,38Si.

doi: 10.1103/PhysRevC.100.044312
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2410. Data from this article have been entered in the XUNDL database. For more information, click here.


2017LA09      Phys.Scr. 92, 074002 (2017)

T.Lauritsen, A.Korichi, T.L.Khoo, M.P.Carpenter, R.V.F.Janssens, L.A.Riley, D.Seweryniak, S.Zhu

Measuring the entry distribution and the quasi-continuum of γ rays with tracking arrays

doi: 10.1088/1402-4896/aa709c
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2017RI09      Phys.Rev. C 96, 064315 (2017)

L.A.Riley, M.L.Agiorgousis, T.R.Baugher, D.Bazin, R.L.Blanchard, M.Bowry, P.D.Cottle, F.G.DeVone, A.Gade, M.T.Glowacki, K.W.Kemper, J.S.Kustina, E.Lunderberg, D.M.McPherson, S.Noji, J.Piekarewicz, F.Recchia, B.V.Sadler, M.Scott, D.Weisshaar, R.G.T.Zegers

Spectroscopy of 54Ti and the systematic behavior of low-energy octupole states in Ca and Ti isotopes

NUCLEAR REACTIONS 1H(54Ti, p'), (55Ti, 54Ti), E=91.5 MeV/nucleon, [secondary 54,55Ti beams from 9Be(76Ge, X), E=130 MeV/nucleon primary reaction using A1900 separator at NSCL-MSU]; measured Eγ, Iγ, γγ-coin, σ using GRETINA array for γ detection. 54Ti; deduced levels, J, π, γ-ray branching ratios, deformation lengths. Comparison with previous experimental results, and with random phase approximation (RPA) calculations using NL3, FSUGold and FSUGarnet effective interactions. Discussed systematics of E3 strength distributions in neighboring nuclei.

NUCLEAR STRUCTURE 40,42,44,46,48,50,52Ca, 50,52,54Ti; calculated E3 strength distributions using random phase approximation (RPA) with NL3, FSUGold and FSUGarnet effective interactions. Comparison with experimental data.

doi: 10.1103/PhysRevC.96.064315
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2291. Data from this article have been entered in the XUNDL database. For more information, click here.


2016RI02      Phys.Rev. C 93, 044327 (2016)

L.A.Riley, D.M.McPherson, M.L.Agiorgousis, T.R.Baugher, D.Bazin, M.Bowry, P.D.Cottle, F.G.DeVone, A.Gade, M.T.Glowacki, S.D.Gregory, E.B.Haldeman, K.W.Kemper, E.Lunderberg, S.Noji, F.Recchia, B.V.Sadler, M.Scott, D.Weisshaar, R.G.T.Zegers

Octupole strength in the neutron-rich calcium isotopes

NUCLEAR REACTIONS 1H(49Ca, 49Ca'), E=94 MeV/nucleon; 1H(51Ca, 51Ca'), E=86 MeV/nucleon; 1H(52Ca, 52Ca'), E=84 MeV/nucleon, [secondary 49,51,52Ca cocktail beam from 9Be(76Ge, X), E=130 MeV/nucleon primary reaction, using A1900 fragment separator at NSCL-MSU]; measured Eγ, Iγ, (particle)γ-coin using high resolution S800 magnetic spectrograph and high resolution gamma-ray tracking (GRETINA) array. 49,51,52Ca; deduced levels, J, π, cross sections, deformation lengths. Optical model analysis. Comparison with previous experimental data. 48,49,50,51,52Ca; Systematics of (p, p'), octupole states and level structure data.

doi: 10.1103/PhysRevC.93.044327
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Data from this article have been entered in the XUNDL database. For more information, click here.


2014RI04      Phys.Rev. C 90, 011305 (2014)

L.A.Riley, M.L.Agiorgousis, T.R.Baugher, D.Bazin, M.Bowry, P.D.Cottle, F.G.DeVone, A.Gade, M.T.Glowacki, K.W.Kemper, E.Lunderberg, D.M.McPherson, S.Noji, F.Recchia, B.V.Sadler, M.Scott, D.Weisshaar, R.G.T.Zegers

Inverse-kinematics proton scattering on 50Ca: Determining effective charges using complementary probes

NUCLEAR REACTIONS 1H(50Ca, 50Ca'), E=90 MeV/nucleon; 1H(48Ca, 48Ca'), E=98 MeV/nucleon, [secondary beams of 48,50Ca from 9Be(76Ge, X), E=130 MeV/nucleon primary reaction]; measured Eγ, Iγ, (48,50Ca)γ-coin, σ, γ-branching ratios using A1900 fragment separator, S800 magnetic spectrograph, and GRETINA γ-ray tracking array at NSCL-MSU facility. 48,50Ca; deduced levels, J, π, deformation lengths, ratio of neutron-to-proton transition matrix elements Mn/Mp for first 2+ states, proton and neutron effective charges in the fp shell. Systematics of Mn/Mp ratios for 42,44,46,48,50Ca. Optical model analysis.

doi: 10.1103/PhysRevC.90.011305
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2128. Data from this article have been entered in the XUNDL database. For more information, click here.


2012RI08      Phys.Rev. C 86, 047301 (2012)

L.A.Riley, P.Adrich, N.Ahsan, T.R.Baugher, D.Bazin, B.A.Brown, J.M.Cook, P.D.Cottle, C.Aa.Diget, A.Gade, T.Glasmacher, K.E.Hosier, K.W.Kemper, A.Ratkiewicz, K.P.Siwek, J.A.Tostevin, A.Volya, D.Weisshaar

γ-ray spectroscopy of one-proton knockout from 45Cl

NUCLEAR REACTIONS 9Be(45Cl, 44S), [45Cl secondary beam from 9Be(48Ca, X), E=145 MeV/nucleon primary reaction], E=99.6 MeV/nucleon; measured Eγ, Iγ, particle spectra, (particle)γ-coin, inclusive parallel momentum distribution, partial one-proton knockout σ using SeGA array at NSCL. 44S; deduced levels, J, π, partial knockout cross sections, branching ratios. Eikonal-model analysis. Comparison with shell model calculations, and with previous experimental studies.

doi: 10.1103/PhysRevC.86.047301
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC1957. Data from this article have been entered in the XUNDL database. For more information, click here.


2012SA37      Phys.Rev. C 86, 034324 (2012)

M.Sasano, G.Perdikakis, R.G.T.Zegers, SamM.Austin, D.Bazin, B.A.Brown, C.Caesar, A.L.Cole, J.M.Deaven, N.Ferrante, C.J.Guess, G.W.Hitt, M.Honma, R.Meharchand, F.Montes, J.Palardy, A.Prinke, L.A.Riley, H.Sakai, M.Scott, A.Stolz, T.Suzuki, L.Valdez, K.Yako

Extraction of Gamow-Teller strength distributions from 56Ni and 55Co via the (p, n) reaction in inverse kinematics

NUCLEAR REACTIONS 1H(55Co, n), E=106 MeV/nucleon; 1H(56Ni, n), E=110 MeV/nucleon, [55Co and 56Ni secondary beams from Be(58Ni, X), E=160 MeV/nucleon primary reaction]; measured E(n), I(n), neutron time of flight, differential σ(θ), excitation spectra using LENDA neutron detector array at NSCL facility. 55Co, 56Ni; deduced Gamow-Teller strengths in (p, n) reactions. Comparison with shell-model calculations in pf shell with KB3G and GXPF1J interactions. Be(58Ni, X)52Fe/53Fe/53Co/54Co/55Ni/55Co/56Ni/56Cu, E=160 MeV/nucleon; measured particle spectra, yields.

doi: 10.1103/PhysRevC.86.034324
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2011SA52      Phys.Rev.Lett. 107, 202501 (2011)

M.Sasano, G.Perdikakis, R.G.T.Zegers, Sam M.Austin, D.Bazin, B.A.Brown, C.Caesar, A.L.Cole, J.M.Deaven, N.Ferrante, C.J.Guess, G.W.Hitt, R.Meharchand, F.Montes, J.Palardy, A.Prinke, L.A.Riley, H.Sakai, M.Scott, A.Stolz, L.Valdez, K.Yako

Gamow-Teller Transition Strengths from 56Ni

NUCLEAR REACTIONS 1H(56Ni, n), E=110 MeV/nucleon; measured reaction products, En, In; deduced σ(θ, E), σ, Gamow-Teller strength distribution. Comparison with shell model calculations using KB3G and GXPF1A interactions.

RADIOACTIVITY 56Cu(p); measured decay products.

doi: 10.1103/PhysRevLett.107.202501
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC1878. Data from this article have been entered in the XUNDL database. For more information, click here.


2009RI04      Phys.Rev. C 79, 051303 (2009)

L.A.Riley, P.Adrich, T.R.Baugher, D.Bazin, B.A.Brown, J.M.Cook, P.D.Cottle, C.Aa.Diget, A.Gade, D.A.Garland, T.Glasmacher, B.A.Hartl, K.E.Hosier, K.W.Kemper, A.Ratkiewicz, K.P.Siwek, D.C.Stoken, J.A.Tostevin, D.Weisshaar

Selectivity of the one-neutron knockout reaction on 45Cl and the collapse of the N = 28 shell closure

NUCLEAR REACTIONS 9Be(45Cl, 44Cl), E=99.6 MeV/nucleon; measured Eγ, Iγ, (particle)γ-coin and parallel momentum distributions. 44Cl; deduced levels, J, π, half-life, cross section. One-neutron knockout reaction. Comparison with shell model calculations.

doi: 10.1103/PhysRevC.79.051303
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2009RI11      Phys.Rev. C 80, 037305 (2009)

L.A.Riley, P.Adrich, T.R.Baugher, D.Bazin, B.A.Brown, J.M.Cook, P.D.Cottle, C.Aa.Diget, A.Gade, D.A.Garland, T.Glasmacher, K.E.Hosier, K.W.Kemper, A.Ratkiewicz, K.P.Siwek, J.A.Tostevin, D.Weisshaar

Rotational and neutron-hole states in 43S via the neutron knockout and fragmentation reactions

NUCLEAR REACTIONS 9Be(44S, X), E=92 MeV/nucleon; 9Be(45Cl, X), E=98 MeV/nucleon; measured Eγ, Iγ, γγ-coin and σ using SeGA array. 43S; deduced levels, J, π, rotational band and branching ratios. One-neutron knockout and fragmentation reactions. Comparison with shell-model calculations.

doi: 10.1103/PhysRevC.80.037305
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2008DI12      Phys.Rev. C 77, 064309 (2008), Erratum Phys.Rev. C 77, 069901 (2008)

C.Aa.Diget, P.Adrich, D.Bazin, M.D.Bowen, B.A.Brown, C.M.Campbell, J.M.Cook, A.Gade, T.Glasmacher, K.Hosier, S.McDaniel, D.McGlinchery, A.Obertelli, L.A.Riley, K.Siwek, J.R.Terry, J.A.Tostevin, D.Weisshaar

Structure of excited states in 21Mg studied in one-neutron knockout

NUCLEAR REACTIONS 9Be(22Mg, 21Mg), E=74 MeV/nucleon; measured Eγ, Iγ, σ, momentum distributions. 21Mg; deduced levels, J, π, spectroscopic factors. 21F; calculated level energies, J, π. Comparison with model calculations.

doi: 10.1103/PhysRevC.77.064309
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Data from this article have been entered in the XUNDL database. For more information, click here.


2008ET01      Phys.Rev. C 78, 017302 (2008)

S.Ettenauer, H.Zwahlen, P.Adrich, D.Bazin, C.M.Campbell, J.M.Cook, A.D.Davies, D.-C.Dinca, A.Gade, T.Glasmacher, J.-L.Lecouey, W.F.Mueller, T.Otsuka, R.R.Reynolds, L.A.Riley, J.R.Terry, Y.Utsuno, K.Yoneda

Intermediate-energy Coulomb excitation of 30Na

NUCLEAR REACTIONS 209Bi(30Na, 30Na'), E=80.1 MeV/nucleon; measured Eγ, Iγ, (particle)γ-coin, σ(θ). 30Na; deduced B(E2). Comparison with shell-model calculations.

doi: 10.1103/PhysRevC.78.017302
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Data from this article have been entered in the XUNDL database. For more information, click here.


2008GA10      Phys.Rev. C 77, 044306 (2008)

A.Gade, P.Adrich, D.Bazin, M.D.Bowen, B.A.Brown, C.M.Campbell, J.M.Cook, T.Glasmacher, P.G.Hansen, K.Hosier, S.McDaniel, D.McGlinchery, A.Obertelli, K.Siwek, L.A.Riley, J.A.Tostevin, D.Weisshaar

Reduction of spectroscopic strength: Weakly-bound and strongly-bound single-particle states studied using one-nucleon knockout reactions

NUCLEAR REACTIONS 9Be(36Ar, X)19F/20Ne/21Na/22Mg/23Al, E=130 MeV/nucleon; measured energy loss, intensities for reaction products. 9Be(24Si, X)23Al/23Si, E=85.3 MeV/nucleon; measured single-particle cross sections, momentum distributions, spectroscopic factors. 9Be(28S, X)27P, E=80.7 MeV/nucleon; measured Eγ, Iγ.9Be(28S, X)27P/27S, E=80.7 MeV/nucleon; measured single particle cross sections, spectroscopic factors, momentum distributions. 7Li, 8B, 9,12,15C, 16O, 32,34,36Ar, 24,30Si, 26,28S, 31P, 40,48Ca, 51V, 90Zr, 208Pb; systematics of cross sections.

doi: 10.1103/PhysRevC.77.044306
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC1623. Data from this article have been entered in the XUNDL database. For more information, click here.


2008GA17      Phys.Lett. B 666, 218 (2008)

A.Gade, P.Adrich, D.Bazin, M.D.Bowen, B.A.Brown, C.M.Campbell, J.M.Cook, T.Glasmacher, K.Hosier, S.McDaniel, D.McGlinchery, A.Obertelli, L.A.Riley, K.Siwek, J.A.Tostevin, D.Weisshaar

In-beam γ-ray spectroscopy at the proton dripline: 23Al

NUCLEAR REACTIONS 9Be(22Mg, 23Al), (23Al, 23Al'), E=150 MeV/nucleon; measured fragment spectra, Eγ, Iγ, (fragment)γ-coin. 23Al; deduced levels, spectroscopic factors.

doi: 10.1016/j.physletb.2008.07.062
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Data from this article have been entered in the XUNDL database. For more information, click here.


2008KA32      Phys.Rev. C 78, 037303 (2008)

R.A.Kaye, C.S.Myers, J.Doring, S.L.Tabor, S.M.Gerbick, T.D.Baldwin, D.B.Campbell, C.Chandler, M.W.Cooper, M.A.Hallstrom, C.R.Hoffman, J.Pavan, L.A.Riley, M.Wiedeking

Linear polarization measurements and negative-parity states in 80Sr

NUCLEAR REACTIONS 54Fe(28Si, 2p), E=90 MeV; 58Ni(28Si, 2pα), E=110 MeV; measured Eγ, Iγ, γγ-coin, polarization, multipolarities, mixing ratios, angular correlation, polarization. 80Sr; deduced levels, J, π, bands.

doi: 10.1103/PhysRevC.78.037303
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2008RI04      Phys.Rev. C 78, 011303 (2008)

L.A.Riley, P.Adrich, T.R.Baugher, D.Bazin, B.A.Brown, J.M.Cook, P.D.Cottle, C.Aa.Diget, A.Gade, D.A.Garland, T.Glasmacher, K.E.Hosier, K.W.Kemper, T.Otsuka, W.D.M.Rae, A.Ratkiewicz, K.P.Siwek, J.A.Tostevin, Y.Utsuno, D.Weisshaar

d5/2 proton hole strength in neutron-rich 43P: Shell structure and nuclear shapes near N = 28

NUCLEAR REACTIONS 9Be(44S, p43P), E=91.7 MeV/nucleon; measured Eγ, Iγ, γγ-, (particle)γ-coin, partial σ, momentum distributions. 43P; deduced levels, J, π. Comparison with shell-model calculations.

doi: 10.1103/PhysRevC.78.011303
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2007CA35      Phys.Lett. B 652, 169 (2007); Addendum Phys.Lett. B 656, 272 (2007)

C.M.Campbell, N.Aoi, D.Bazin, M.D.Bowen, B.A.Brown, J.M.Cook, D.-C.Dinca, A.Gade, T.Glasmacher, M.Horoi, S.Kanno, T.Motobayashi, L.A.Riley, H.Sagawa, H.Sakurai, K.Starosta, H.Suzuki, S.Takeuchi, J.R.Terry, K.Yoneda, H.Zwahlen

Quadrupole collectivity in silicon isotopes approaching neutron number N=28

NUCLEAR REACTIONS 1H(36Si, 36Si'), E < 140 MeV/nucleon; 1H(38Si, 38Si'), E < 140 MeV/nucleon; 1H(40Si, 40Si'), E < 140 MeV/nucleon; measured Eγ, Iγ, (particle)γ-coinc, inelastic proton scattering cross sections. 36,38,40Si deduced quadrupole deformation parameters.

doi: 10.1016/j.physletb.2007.07.005
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2007GA38      Phys.Rev. C 76, 024317 (2007)

A.Gade, P.Adrich, D.Bazin, M.D.Bowen, B.A.Brown, C.M.Campbell, J.M.Cook, T.Glasmacher, K.Hosier, S.McDaniel, D.McGlinchery, A.Obertelli, L.A.Riley, K.Siwek, D.Weisshaar

Spectroscopy of 20Mg: The isobaric mass multiplet equation for the 2+ states of the A = 20, T = 2 quintet and distant mirror nuclei

NUCLEAR REACTIONS 9B(22Mg, X)20Mg, E=150 MeV/nucleon; measured Eγ, Iγ, (particle)γ-coinc. 20Mg deduced level energy and mass excess.

doi: 10.1103/PhysRevC.76.024317
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2007GA58      Phys.Rev. C 76, 061302 (2007)

A.Gade, P.Adrich, D.Bazin, M.D.Bowen, B.A.Brown, C.M.Campbell, J.M.Cook, T.Glasmacher, K.Hosier, S.McDaniel, D.McGlinchery, A.Obertelli, L.A.Riley, K.Siwek, J.A.Tostevin, D.Weisshaar

Inverse-kinematics one-proton pickup with intermediate-energy beams: The 9Be (20Ne, 21Na+γ)X reaction

NUCLEAR REACTIONS 9Be(20Ne, 21Na), E=63 MeV/nucleon; measured cross sections, Eγ, Iγ, γγ-, (21Na)γ-coin, momentum distributions. 21Na; deduced levels, J, π.

doi: 10.1103/PhysRevC.76.061302
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2007KA13      Phys.Rev. C 75, 034311 (2007)

R.A.Kaye, Y.K.Ryu, S.R.Arora, S.L.Tabor, J.Doring, Y.Sun, T.D.Baldwin, D.B.Campbell, C.Chandler, M.W.Cooper, S.M.Gerbick, O.Grubor-Urosevic, C.R.Hoffman, J.Pavan, L.A.Riley, M.Wiedeking

Transition strengths and degree of deformation in 79Sr

NUCLEAR REACTIONS 54Fe(28Si, n2p), E=90 MeV; measured Eγ, Iγ, γγ-coin, DSA. 79Sr deduced high-spin levels, J, π, configurations, T1/2, B(E2), B(M1), transition quadrupole moments, β2. Comparison with cranked mean-field and projected shell-model predictions.

doi: 10.1103/PhysRevC.75.034311
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2006GA31      Phys.Rev. C 74, 034322 (2006)

A.Gade, B.A.Brown, D.Bazin, C.M.Campbell, J.A.Church, D.C.Dinca, J.Enders, T.Glasmacher, M.Horoi, Z.Hu, K.W.Kemper, W.F.Mueller, T.Otsuka, L.A.Riley, B.T.Roeder, T.Suzuki, J.R.Terry, K.L.Yurkewicz, H.Zwahlen

Evolution of the E(1/2+1) - E(3/2+1) energy spacing in odd-mass K, Cl, and P isotopes for N = 20-28

NUCLEAR REACTIONS H, C(46Ar, X)43Cl/45Cl, E=76.4 MeV/nucleon; measured Eγ, Iγ, (particle)γ-coin. 45Cl deduced level energy.

NUCLEAR STRUCTURE 35,37,39,41,43P, 37,39,41,43,45Cl, 39,41,43,45,47K; analyzed level energies, splitting.

doi: 10.1103/PhysRevC.74.034322
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2005CH66      Phys.Rev. C 72, 054320 (2005)

J.A.Church, C.M.Campbell, D.-C.Dinca, J.Enders, A.Gade, T.Glasmacher, Z.Hu, R.V.F.Janssens, W.F.Mueller, H.Olliver, B.C.Perry, L.A.Riley, K.L.Yurkewicz

Measurement of E2 transition strengths in 32, 34Mg

NUCLEAR REACTIONS 209Bi(26Mg, 26Mg'), E=78.6 MeV/nucleon; 197Au(32Mg, 32Mg'), E=81.1 MeV/nucleon; 209Bi(34Mg, 34Mg'), E=76.4 MeV/nucleon; measured Eγ, Iγ, (particle)γ-coin following projectile Coulomb excitation. 26,32,34Mg deduced transitions B(E2), deformation parameters. Comparison with previous work, model predictions.

doi: 10.1103/PhysRevC.72.054320
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2005GA15      Acta Phys.Pol. B36, 1227 (2005)

A.Gade, D.Bazin, B.A.Brown, C.M.Campbell, J.A.Church, D.-C.Dinca, J.Enders, T.Glasmacher, P.G.Hansen, M.Honma, T.Mizusaki, W.F.Mueller, H.Olliver, T.Otsuka, L.A.Riley, J.R.Terry, J.A.Tostevin, K.L.Yurkewicz

Nuclear spectroscopy with fast exotic beams

NUCLEAR REACTIONS 197Au(52Fe, 52Fe'), (54Ni, 54Ni'), (56Ni, 56Ni'), (58Ni, 58Ni'), E not given; measured Eγ, Iγ, (particle)γ-coin following projectile Coulomb excitation. 52Fe, 54,56,58Ni transitions deduced B(E2). 9Be(32S, 31SX), (33Cl, 32ClX), (34Ar, 33ArX), E not given; measured one-neutron removal σ.


2005GA18      Phys.Rev. C 71, 051301 (2005)

A.Gade, D.Bazin, C.A.Bertulani, B.A.Brown, C.M.Campbell, J.A.Church, D.C.Dinca, J.Enders, T.Glasmacher, P.G.Hansen, Z.Hu, K.W.Kemper, W.F.Mueller, H.Olliver, B.C.Perry, L.A.Riley, B.T.Roeder, B.M.Sherrill, J.R.Terry, J.A.Tostevin, K.L.Yurkewicz

Knockout from 46Ar:l=3 neutron removal and deviations from eikonal theory

NUCLEAR REACTIONS 9Be(46Ar, 45ArX), E=70 MeV/nucleon; measured Eγ, Iγ, fragments parallel momentum distributions following one-neutron removal; deduced dissipative effects. 45Ar levels deduced branching ratios, spectroscopic factors. Comparison with eikonal theory.

doi: 10.1103/PhysRevC.71.051301
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2005GA54      Eur.Phys.J. A 25, Supplement 1, 251 (2005)

A.Gade, D.Bazin, B.A.Brown, C.M.Campbell, J.A.Church, D.-C.Dinca, J.Enders, T.Glasmacher, P.G.Hansen, Z.Hu, K.W.Kemper, W.F.Mueller, H.Olliver, B.C.Perry, L.A.Riley, B.T.Roeder, B.M.Sherrill, J.R.Terry, J.A.Tostevin, K.L.Yurkewicz

Spectroscopic factors in exotic nuclei from nucleon-knockout reactions

NUCLEAR REACTIONS 9Be(32S, 31SX), (33Cl, 32ClX), (32Ar, 31ArX), (34Ar, 33ArX), E≈ 65 MeV/nucleon; measured Eγ, Iγ, (particle)γ-coin, particle momentum distributions; deduced one-neutron removal σ. 31S, 32Cl, 31,33Ar levels deduced spectroscopic factors. Comparison with shell model predictions.

doi: 10.1140/epjad/i2005-06-177-x
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2005RI11      Phys.Rev. C 72, 024311 (2005)

L.A.Riley, M.A.Abdelqader, D.Bazin, M.J.Bojazi, B.A.Brown, C.M.Campbell, J.A.Church, P.D.Cottle, D.-C.Dinca, J.Enders, A.Gade, T.Glasmacher, M.Honma, S.Horibe, Z.Hu, K.W.Kemper, W.F.Mueller, H.Olliver, T.Otsuka, B.C.Perry, B.T.Roeder, B.M.Sherrill, T.P.Spencer, J.R.Terry

Thick-target inverse-kinematics proton scattering from 46Ar and the N = 28 shell below 48Ca

NUCLEAR REACTIONS 1H, C(46Ar, 46Ar'), E ≈ 68 MeV/nucleon; measured Eγ, Iγ, (particle)γ-coin. 46Ar deduced levels, J, π, B(E2), deformation lengths. Optical model analysis.

NUCLEAR STRUCTURE 46Ar, 48Ca, 50Ti, 52Cr, 54Fe; calculated B(E2), ratio of neutron-to-proton transition matrix elements.

doi: 10.1103/PhysRevC.72.024311
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2004GA15      Phys.Rev. C 69, 034311 (2004)

A.Gade, D.Bazin, B.A.Brown, C.M.Campbell, J.A.Church, D.C.Dinca, J.Enders, T.Glasmacher, P.G.Hansen, Z.Hu, K.W.Kemper, W.F.Mueller, H.Olliver, B.C.Perry, L.A.Riley, B.T.Roeder, B.M.Sherrill, J.R.Terry, J.A.Tostevin, K.L.Yurkewicz

One-neutron knockout reactions on proton-rich nuclei with N = 16

NUCLEAR REACTIONS 9Be(32S, 31SX), (34Ar, 33ArX), (33Cl, 32ClX), E ≈ 65 MeV/nucleon; measured Eγ, Iγ, (particle)γ-coin, particle momentum distributions; deduced one-neutron removal σ. 31S, 33Ar, 32Cl levels deduced spectroscopic factors. Comparison with shell model predictions.

doi: 10.1103/PhysRevC.69.034311
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2004GA33      Phys.Rev.Lett. 93, 042501 (2004)

A.Gade, D.Bazin, B.A.Brown, C.M.Campbell, J.A.Church, D.C.Dinca, J.Enders, T.Glasmacher, P.G.Hansen, Z.Hu, K.W.Kemper, W.F.Mueller, H.Olliver, B.C.Perry, L.A.Riley, B.T.Roeder, B.M.Sherrill, J.R.Terry, J.A.Tostevin, K.L.Yurkewicz

Reduced Occupancy of the Deeply Bound 0d5/2 Neutron State in 32Ar

NUCLEAR REACTIONS 9Be(32Ar, 31ArX), E=65.1 MeV/nucleon; measured σ, longitudinal momentum distribution; deduced spectroscopic factor. 32Ar deduced occupancy of deeply-bound neutron state. Role of large neutron separation energy discussed.

doi: 10.1103/PhysRevLett.93.042501
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2004KA32      Phys.Rev. C 69, 064314 (2004)

R.A.Kaye, O.Grubor-Urosevic, S.L.Tabor, J.Doring, Y.Sun, R.Palit, J.A.Sheikh, T.Baldwin, D.B.Campbell, C.Chandler, M.W.Cooper, S.M.Gerbick, C.R.Hoffman, J.Pavan, L.A.Riley, M.Wiedeking

Collective excitations and shape changes in 80Y

NUCLEAR REACTIONS 54Fe(28Si, np), E=90 MeV; measured Eγ, Iγ, γγ-coin, DSA. 80Y deduced high-spin levels, J, π, T1/2, transition quadrupole moments, B(M1), B(E2). Cranked mean-field calculations.

doi: 10.1103/PhysRevC.69.064314
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2004YU07      Phys.Rev. C 70, 034301 (2004)

K.L.Yurkewicz, D.Bazin, B.A.Brown, C.M.Campbell, J.A.Church, D.-C.Dinca, A.Gade, T.Glasmacher, M.Honma, T.Mizusaki, W.F.Mueller, H.Olliver, T.Otsuka, L.A.Riley, J.R.Terry

Intermediate-energy Coulomb excitation of 52Fe

NUCLEAR REACTIONS 197Au(52Fe, 52Fe'), E=56.9 MeV/nucleon; measured σ(θ), Eγ, Iγ, (particle)γ-coin following projectile Coulomb excitation. 52Fe transition deduced B(E2). Comparisons with neighboring nuclides.

doi: 10.1103/PhysRevC.70.034301
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2004YU10      Phys.Rev. C 70, 054319 (2004)

K.L.Yurkewicz, D.Bazin, B.A.Brown, C.M.Campbell, J.A.Church, D.C.Dinca, A.Gade, T.Glasmacher, M.Honma, T.Mizusaki, W.F.Mueller, H.Olliver, T.Otsuka, L.A.Riley, J.R.Terry

Nuclear structure in the vicinity of N=Z=28 56Ni

NUCLEAR REACTIONS 197Au(58Ni, 58Ni'), E=77.8 MeV/nucleon; 197Au(56Ni, 56Ni'), E=85.8 MeV/nucleon; 197Au(54Ni, 54Ni'), E=70.3 MeV/nucleon; measured Eγ, Iγ, (particle)γ-coin following projectile Coulomb excitation. 54,56,58Ni levels deduced excitation B(E2). Comparison with model predictions.

doi: 10.1103/PhysRevC.70.054319
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2004YU11      Phys.Rev. C 70, 064321 (2004)

K.L.Yurkewicz, D.Bazin, B.A.Brown, C.M.Campbell, J.A.Church, D.-C.Dinca, A.Gade, T.Glasmacher, M.Honma, T.Mizusaki, W.F.Mueller, H.Olliver, T.Otsuka, L.A.Riley, J.R.Terry

E2 excitation strength in 55Ni: Coupling of the 56Ni 2+1 collective core vibration to the f7/2 odd neutron hole

NUCLEAR REACTIONS 197Au(55Ni, 55Ni'), E=84.8 MeV; measured Eγ, Iγ, (particle)γ-coin following projectile Coulomb excitation. 55Ni deduced level, transition B(E2). Comparison with model predictions.

doi: 10.1103/PhysRevC.70.064321
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2003GA20      Phys.Rev. C 68, 014302 (2003)

A.Gade, D.Bazin, C.M.Campbell, J.A.Church, D.C.Dinca, J.Enders, T.Glasmacher, Z.Hu, K.W.Kemper, W.F.Mueller, H.Olliver, B.C.Perry, L.A.Riley, B.T.Roeder, B.M.Sherrill, J.R.Terry

Detailed experimental study on intermediate-energy Coulomb excitation of 46Ar

NUCLEAR REACTIONS 197Au(46Ar, 46Ar'), E=76.4 MeV; measured Eγ, Iγ, (particle)γ-coin following projectile Coulomb excitation. 46Ar levels deduced excitation B(E2). Highly-segmented Ge detectors, high-resolution spectrograph.

doi: 10.1103/PhysRevC.68.014302
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2003RI08      Phys.Rev. C 68, 044309 (2003)

L.A.Riley, P.D.Cottle, M.Brown-Hayes, W.T.Cluff, J.D.Fox, N.Keeley, F.W.Letson, R.A.Kaye, K.W.Kemper, M.T.McEllistrem, S.L.Tabor, J.M.Thompson, D.Walker

Lifetime of the 2+1 state and densities for the 0+g.s → 2+1 transition in 18Ne

NUCLEAR REACTIONS 3He(16O, n), E=38 MeV; measured Eγ, Iγ, (neutron)γ-coin, DSA. 18Ne deduced level T1/2, B(E2). Comparison with previous results.

doi: 10.1103/PhysRevC.68.044309
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2002CO09      Phys.Rev.Lett. 88, 172502 (2002)

P.D.Cottle, Z.Hu, B.V.Pritychenko, J.A.Church, M.Fauerbach, T.Glasmacher, R.W.Ibbotson, K.W.Kemper, L.A.Riley, H.Scheit, M.Steiner

0gs+ → 21+ Excitations in the Mirror Nuclei 32Ar and 32Si

NUCLEAR REACTIONS 197Au(32Ar, 32Ar'), (30S, 30S'), E ≈ 40 MeV/nucleon; measured Eγ, Iγ, (particle)γ-coin following projectile Coulomb excitation. 1H(32S, p), E=42 MeV/nucleon; measured elastic and inelastic σ(θ). 30,32S, 32Ar deduced excitation B(E2). 32S deduced ratio of neutron and proton matrix elements.

doi: 10.1103/PhysRevLett.88.172502
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2002PR09      Phys.Rev. C65, 061304 (2002)

B.V.Pritychenko, T.Glasmacher, P.D.Cottle, R.W.Ibbotson, K.W.Kemper, L.A.Riley, A.Sakharuk, H.Scheit, M.Steiner, V.Zelevinsky

Structure of the ' Island of Inversion ' Nucleus 33Mg

NUCLEAR REACTIONS 197Au(33Mg, 33Mg'), E=61.8 MeV/nucleon; measured Eγ, Iγ, (particle)γ-coin following projectile Coulomb excitation. 33Mg deduced level excitation B(E2), J, π, configuration, deformation.

doi: 10.1103/PhysRevC.65.061304
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2002PR12      Phys.Rev. C66, 024325 (2002)

B.V.Pritychenko, T.Glasmacher, P.D.Cottle, R.W.Ibbotson, K.W.Kemper, K.L.Miller, L.A.Riley, H.Scheit

Transition to the "island of inversion": Fast-beam γ-ray spectroscopy of 28, 30Na

NUCLEAR REACTIONS 197Au(28Na, 28Na'), E=43.1 MeV/nucleon; 197Au(30Na, 30Na'), E=55.6 MeV/nucleon; measured Eγ, Iγ, (particle)γ-coin following projectile Coulomb excitation. 28,30Na deduced transitions, excitation cross sections, intrinsic quadrupole moments. 31Na analyzed data; deduced ground-state configuration features.

doi: 10.1103/PhysRevC.66.024325
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2001HA12      Nucl.Phys. A682, 356c (2001)

G.Hackman, S.M.Austin, T.Glasmacher, T.Aumann, B.A.Brown, R.W.Ibbotson, K.Miller, B.Pritychenko, L.A.Riley, B.Roeder, E.Spears

Intermediate-Energy Coulomb Excitation of 19Ne

NUCLEAR REACTIONS 197Au(19Ne, 19Ne'), E=55 MeV/nucleon; measured Eγ, Iγ, (particle)γ-coin following projectile Coulomb excitation. 19Ne deduced levels, J, π, widths, excitation B(E2), B(M1), B(E1). Secondary beam from 20Ne fragmentation. Shell model calculations.

doi: 10.1016/S0375-9474(00)00660-6
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2001PR01      Phys.Rev. C63, 011305 (2001)

B.V.Pritychenko, T.Glasmacher, B.A.Brown, P.D.Cottle, R.W.Ibbotson, K.W.Kemper, L.A.Riley, H.Scheit

First Observation of an Excited State in the Neutron-Rich Nucleus 31Na

NUCLEAR REACTIONS 197Au(31Na, 31Na'), E=58.9 MeV/nucleon; measured Eγ, (particle)γ-coin, σ(θ) following Coulomb excitation. 31Na deduced first excited state level, J, π, configuration using Shell Model calculations, and proton and nuclear matter deformation parameters following coupled-channels calculations.

doi: 10.1103/PhysRevC.63.011305
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2000HA26      Phys.Rev. C61, 052801 (2000)

G.Hackman, S.M.Austin, T.Glasmacher, T.Aumann, B.A.Brown, R.W.Ibbotson, K.Miller, B.Pritychenko, L.A.Riley, B.Roeder, E.Spears

Intermediate-Energy Coulomb Excitation of 19Ne

NUCLEAR REACTIONS 197Au(19Ne, 19Ne'), E=55 MeV/nucleon; measured Eγ, Iγ following projectile Coulomb excitation. 19Ne transitions deduced B(λ). Secondary beam from 20Ne fragmentation. Comparison with mirror nucleus, shell model calculations.

doi: 10.1103/PhysRevC.61.052801
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2000RI12      Phys.Rev. C62, 021301 (2000)

L.A.Riley, P.D.Cottle, M.Fauerbach, V.S.Griffin, B.N.Guy, K.W.Kemper, G.S.Rajbaidya, O.J.Tekyi-Mensah

Conversion Electron-γ Coincidences and Intrinsic Reflection Asymmetry in 219Ra

NUCLEAR REACTIONS 208Pb(14C, 3n), E=68 MeV; measured Eγ, Iγ, E(ce), I(ce), γγ-, (ce)γ-coin. 219Ra deduced high-spin levels, J, π, ICC, configurations.

doi: 10.1103/PhysRevC.62.021301
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2000RI15      Phys.Rev. C62, 034306 (2000)

L.A.Riley, P.D.Cottle, M.Fauerbach, T.Glasmacher, K.W.Kemper, B.V.Pritychenko, H.Scheit

B(E2; 0g.s.+ → 21+) in 18Ne and Isospin Purity in A = 18 Nuclei

NUCLEAR REACTIONS 197Au(18Ne, 18Ne'), E=60 MeV/nucleon; 197Au(18O, 18O'), E=46 MeV/nucleon; measured Eγ, Iγ following projectile Coulomb excitation. 18Ne deduced excitation B(E2). Coupled channels calculations.

NUCLEAR STRUCTURE A=18; analyzed B(E2), related data; deduced isospin purity.

doi: 10.1103/PhysRevC.62.034306
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2000TH11      Phys.Lett. 485B, 16 (2000)

P.G.Thirolf, B.V.Pritychenko, B.A.Brown, P.D.Cottle, M.Chromik, T.Glasmacher, G.Hackman, R.W.Ibbotson, K.W.Kemper, T.Otsuka, L.A.Riley, H.Scheit

Spectroscopy of the 21+ State in 22O and Shell Structure Near the Neutron Drip Line

NUCLEAR REACTIONS 197Au(22O, 22O'), E=50.6 MeV/nucleon; measured Eγ, Iγ, σ. 22O level deduced excitation B(E2), shell structure. Secondary beam from 40Ar fragmentation. Level systematics in neighboring isotopes discussed.

doi: 10.1016/S0370-2693(00)00720-6
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1999JE06      Phys.Lett. 454B, 181 (1999)

J.K.Jewell, L.A.Riley, P.D.Cottle, K.W.Kemper, T.Glasmacher, R.W.Ibbotson, H.Scheit, M.Chromik, Y.Blumenfeld, S.E.Hirzebruch, F.Marechal, T.Suomijarvi

Proton Scattering on the Radioactive Nucleus 20O and the 0gs+ → 21+ Transition in the Neutron-Rich Oxygen Isotopes

NUCLEAR REACTIONS 1H(20O, 20O'), E=30 MeV/nucleon; measured recoil proton spectra, σ(θ). 20O deduced transition neutron/proton matrix element ratio, core polarization features. Secondary beam from 22Ne fragmentation.

doi: 10.1016/S0370-2693(99)00403-7
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1999MA63      Phys.Rev. C60, 034615 (1999)

F.Marechal, T.Suomijarvi, Y.Blumenfeld, A.Azhari, E.Bauge, D.Bazin, J.A.Brown, P.D.Cottle, J.P.Delaroche, M.Fauerbach, M.Girod, T.Glasmacher, S.E.Hirzebruch, J.K.Jewell, J.H.Kelley, K.W.Kemper, P.F.Mantica, D.J.Morrissey, L.A.Riley, J.A.Scarpaci, H.Scheit, M.Steiner

Proton Scattering by Short Lived Sulfur Isotopes

NUCLEAR REACTIONS 1H(40S, 40S'), E=30 MeV/nucleon; measured recoil proton spectra, σ(θ). 40S deduced excited levels, deformation. 32,34,36,38,40S(p, p'), E ≈ 30 MeV; calculated σ(E, θ).

NUCLEAR STRUCTURE 32,34,36,38,40S; calculated neutron, proton densities, transition densities, deformation. Microscopic approach.

doi: 10.1103/PhysRevC.60.034615
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1999MA89      Phys.Rev. C60, 064623 (1999)

F.Marechal, T.Suomijarvi, Y.Blumenfeld, A.Azhari, D.Bazin, J.A.Brown, P.D.Cottle, M.Fauerbach, T.Glasmacher, S.E.Hirzebruch, J.K.Jewell, J.H.Kelley, K.W.Kemper, P.F.Mantica, D.J.Morrissey, L.A.Riley, J.A.Scarpaci, H.Scheit, M.Steiner

Proton Scattering from the Unstable Neutron-Rich Nucleus 43Ar

NUCLEAR REACTIONS 1H(43Ar, 43Ar'), E=33 MeV/nucleon; measured σ(E, θ). 43Ar level deduced possible J, π, deformation. Secondary beam from 48Ca fragmentation. Comparison with neighboring isotopes. DWBA calculations.

doi: 10.1103/PhysRevC.60.064623
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1999RI05      Phys.Rev.Lett. 82, 4196 (1999)

L.A.Riley, J.K.Jewell, P.D.Cottle, T.Glasmacher, K.W.Kemper, N.Alamanos, Y.Blumenfeld, J.A.Carr, M.J.Chromik, R.W.Ibbotson, F.Marechal, W.E.Ormand, F.Petrovich, H.Scheit, T.Suomijarvi

Inverse Kinematics Proton Scattering on 18Ne and Mirror Symmetry in A = 18 Nuclei

NUCLEAR REACTIONS 1H(18Ne, p), E=30 MeV/nucleon; measured proton spectra, inelastic σ(θ); deduced mirror symmetry. Comparison with n+18O scattering.

doi: 10.1103/PhysRevLett.82.4196
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1998FA09      Phys.Rev. C58, 826 (1998)

M.Fauerbach, L.A.Riley, P.D.Cottle, R.A.Kaye, K.W.Kemper

Weak Coupling and Single-Particle Structure at High Spin in 143Nd

NUCLEAR REACTIONS 130Te(18O, 5n), E=85 MeV; measured Eγ, Iγ, E(ce), I(ce), γγ-, (ce)γ-coin. 143Nd deduced high-spin levels, J, π, ICC, configuration. Weak coupling model.

doi: 10.1103/PhysRevC.58.826
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1998KA56      Phys.Rev. C58, 3228 (1998)

R.A.Kaye, L.A.Riley, G.Z.Solomon, S.L.Tabor, P.Semmes

Collective Behavior in 78Rb

NUCLEAR REACTIONS 58Ni(23Na, n2p), E=70 MeV; measured Eγ, Iγ, γγ-coin, Doppler-shifted spectra. 78Rb deduced levels T1/2, B(E2), B(M1). Recoil distance technique. Comparison with particle-rotor model calculations.

NUCLEAR STRUCTURE 78Rb; calculated B(M1). 78Rb, 74Br, 82Y; analyzed B(M1), B(E2). Particle-rotor model.

doi: 10.1103/PhysRevC.58.3228
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1997JE06      Phys.Rev. C56, 2440 (1997)

J.K.Jewell, P.D.Cottle, K.W.Kemper, L.A.Riley

Octupole States in 196Pt(p, p'γ)

NUCLEAR REACTIONS 196Pt(p, p'γ), E=12.7 MeV; measured Eγ, Iγ, Ep, Ip, pγ-coin. 196Pt deduced levels, J, π, possible octupole, mixed symmetry states.

doi: 10.1103/PhysRevC.56.2440
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1997ME24      Nucl.Instrum.Methods Phys.Res. A385, 112 (1997)

M.P.Metlay, L.A.Riley, P.D.Cottle, J.K.Jewell, K.W.Kemper

Zero Degree Detector for Conversion-Electrons from a Heavy-Ion-Induced Reaction

NUCLEAR REACTIONS 124Sn(35Cl, 4n), E=145 MeV; measured Eγ, Iγ, E(ce), I(ce). 155Ho deduced levels, conversion coefficients, rotational band features. Zero-degree mini-orange spectrometer.

doi: 10.1016/S0168-9002(96)00792-9
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