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NSR database version of March 18, 2024.

Search: Author = K.W.Kemper

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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
Citations: PlumX Metrics


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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2023KE12      Phys.Rev. C 108, 044603 (2023)

N.Keeley, I.Martel, K.W.Kemper, K.Rusek

Breakup and transfer reactions in the 17Ne + 208Pb system close to the Coulomb barrier

doi: 10.1103/PhysRevC.108.044603
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2023KU27      Eur.Phys.J. A 59, 282 (2023)

Z.Kurmanaliyev, B.Mauyey, Awad A.Ibraheem, K.W.Kemper, S.Hamada

Behavior of 6Li+144Sm elastic and inelastic angular distributions in the region of the Coulomb barrier

NUCLEAR REACTIONS 144Sm(6Li, 6Li'), E=21-45 MeV; analyzed available data with a Woods-Saxon phenomenological and two microscopic optical potentials; deduced σ, energy-dependent real and imaginary potential volume integrals, normal threshold anomaly of strong coupling between the real and imaginary potentials.

doi: 10.1140/epja/s10050-023-01191-5
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2023OV01      Phys.Lett. B 843, 138007 (2023)

J.D.Ovejas, I.Martel, D.Dell'Aquila, L.Acosta, J.L.Aguado, G.de Angelis, M.J.G.Borge, J.A.Briz, A.Chbihi, G.Colucci, C.Diaz-Martin, P.Figuera, D.Galaviz, C.Garcia-Ramos, J.A.Gomez-Galan, C.A.Gonzales, N.Goyal, N.Keeley, K.W.Kemper, T.Kurtukian Nieto, D.J.Malenica, M.Mazzocco, D.Nurkic, A.K.Orduz, A.Ortiz, L.Palada, C.Parascandolo, A.Di Pietro, A.M.Rodriguez, K.Rusek, F.Salguero, A.M.Sanchez-Benitez, M.Sanchez-Raya, J.Sanchez-Segovia, N.Soic, F.Soramel, M.Stanoiu, O.Tengblad, N.Vukman, M.Xarepe

Suppression of Coulomb-nuclear interference in the near-barrier elastic scattering of 17Ne from 208Pb

NUCLEAR REACTIONS 208Pb(17Ne, 17Ne), (17Ne, X)15O, E=136 MeV; measured reaction products. 17Ne; deduced σ, σ(θ) for elastic scattering and 15O inclusive production, optical model parameters, B(E2). Coupled channels analysis. Comparison with available data. The GLORIA detector array, the SPIRAL1 facility, GANIL.

doi: 10.1016/j.physletb.2023.138007
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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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2023RU03      Iader.Fiz.Enerh. 24, 22 (2023)

A.T.Rudchik, A.A.Rudchik, V.V.Khejlo, K.Rusek, K.W.Kemper, E.Piasecki, A.Stolarz, A.Trzcinska, V.M.Pirnak, O.A.Ponkratenko, E.I.Koshchy, O.E.Kutsyk, A.P.Ilyin, Y.M.Stepanenko, V.V.Uleshchenko, Y.O.Shyrma

Reaction 10B(15N, 14C)11C at energy 81 MeV, spectroscopic factors and interaction of 14C + 11C nuclei

NUCLEAR REACTIONS 10B(15N, 14C), E=81 MeV; measured reaction products; deduced σ(θ) within the coupled-reaction-channels (CRC) method. ICARE data.

doi: 10.15407/jnpae2023.01.022
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD5203.


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


2022KE03      Phys.Rev. C 106, 014623 (2022)

N.Keeley, K.W.Kemper, K.Rusek

Compatibility of the asymptotic normalization coefficient for the 14C → 13B + p overlap extracted from the 14C(11B, 12C)13B reaction with 14C(d, 3He)13B data

NUCLEAR REACTIONS 14C(d, 3He), E=52 MeV; analyzed data from 1975MA41; deduced σ, σ(θ) using asymptotic normalization coefficient extracted from analysis of 14C(11B, 12C) reaction. Coupled reaction channel (CRC) and distorted wave Born approximation (DWBA) analysis.

doi: 10.1103/PhysRevC.106.014623
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2022LO08      Phys.Rev.Lett. 129, 012502 (2022)

E.Lopez-Saavedra, S.Almaraz-Calderon, B.W.Asher, L.T.Baby, N.Gerken, K.Hanselman, K.W.Kemper, A.N.Kuchera, A.B.Morelock, J.F.Perello, E.S.Temanson, A.Volya, I.Wiedenhover

Observation of a Near-Threshold Proton Resonance in 11B

NUCLEAR REACTIONS 2H(10Be, n)11B, E=39 MeV; measured reaction products, Ep, Ip, Eα, Iα; deduced near-threshold proton resonance, spectroscopic factor, angular momentum transfer. Comparison with available data. Distorted wave Born approximation calculations. The Tandem-Linac accelerator, the John D. Fox accelerator laboratory of Florida State University.

doi: 10.1103/PhysRevLett.129.012502
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Data from this article have been entered in the XUNDL database. For more information, click here.


2022ME03      Phys.Rev. C 105, 024615 (2022)

S.Yu.Mezhevych, N.Keeley, A.T.Rudchik, K.Rusek, K.W.Kemper, A.A.Rudchik, O.A.Ponkratenko, E.I.Koshchy, S.B.Sakuta

Extracting the asymptotic normalization coefficient for the 14C → 13B + p overlap from the 14C(11B, 12C)13B reaction

NUCLEAR REACTIONS 14C(11B, 12C), (11B, 11B), E=45 MeV; analyzed σ, σ(θ); deduced asymptotic normalization coefficient for 14C and 13B+p overlap, spectroscopic factors. Coupled reaction channel (CRC) analysis.

doi: 10.1103/PhysRevC.105.024615
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2022ME09      Iader.Fiz.Enerh. 23, 12 (2022)

S.Yu.Mezhevych, A.T.Rudchik, K.Rusek, K.W.Kemper, A.A.Rudchik, O.A.Ponkratenko, E.I.Koshchy

Reaction 14C(11B, 12C)13B at Elab(11B) = 45 MeV, interaction of 13B + 12C versus that of 10, 11, 12B + 12C

NUCLEAR REACTIONS 14C(11B, 12C)13B, E=45 MeV; measured reaction products; deduced σ(θ) using the coupled reaction channels (CRC) method, optical potential parameters; calculated spectroscopic amplitudes of transferred nucleons and clusters within the translational-invariant shell model. The Warsaw University cyclotron U-200P.

doi: 10.15407/jnpae2022.01.012
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD5195.


2022ME11      Iader.Fiz.Enerh. 23, 164 (2022)

S.Yu.Mezhevych, A.T.Rudchik, O.A.Ponkratenko, K.Rusek, K.W.Kemper, V.M.Kyrianchuk, A.A.Rudchik, Yu.M.Stepanenko, V.V.Uleshchenko

Potentials of interaction of 10, 11, 12, 13B isotopes with 12C

NUCLEAR REACTIONS 12C(10B, 10B), E=41.3 MeV; 12C(11B, 11B), E=40 MeV; 13,14C(11B, 12C), E=45 MeV; calculated σ, parameters within the coupled-reaction-channels method (CRC) using previously deduced Woods-Saxon potentials.

doi: 10.15407/jnpae2022.03.164
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2022NA26      Phys.Scr. 97, 045302 (2022)

M.Nassurlla, N.Burtebayev, B.K.Karakozov, S.B.Sakuta, D.Janseitov, M.Nassurlla, D.Alimov, J.Burtebayeva, A.Sabidolda, K.W.Kemper, R.Khojayev, S.Hamada

Study of the 13C(3He, α)12C reaction at energies of 50 and 60 MeV

NUCLEAR REACTIONS 13C(3He, α)12C, E=50, 60 MeV; measured reaction products, Eα, Iα; deduced σ(θ), σ, energy levels. The Coupled Channels Born Approximation method. The U-150M isochronous cyclotron at the Institute of Nuclear Physics (Almaty, Kazakhstan).

doi: 10.1088/1402-4896/ac5af6
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Data from this article have been entered in the XUNDL database. For more information, click here.


2022PE02      Phys.Rev. C 105, 035805 (2022)

J.F.Perello, S.Almaraz-Calderon, B.W.Asher, L.T.Baby, C.Benetti, K.W.Kemper, E.Lopez-Saavedra, G.W.McCann, A.B.Morelock, V.Tripathi, I.Wiedenhover, B.Sudarsan

Low-lying resonances in 26Si relevant for the determination of the astrophysical 25Al(p, γ)26Si reaction rate

NUCLEAR REACTIONS 24Mg(3He, n), E=10 MeV; measured ToF, En, In, Eγ, Iγ, nγ-coin. 26Si; deduced levels, J, π, partial decay widths. 25Al(p, γ), T=0.01-1 GK; deduced proton capture rate using newly observed states in 26Si, contribution of individual resonances to the total reaction rate. Comparison to reaction rate values from JINA REACLIB database. CATRiNA neutron detector array (16 deuterated liquid scintillators) combined with 3 HPGe clover detectors.

doi: 10.1103/PhysRevC.105.035805
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Data from this article have been entered in the XUNDL database. For more information, click here.


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


2022RU05      Phys.Rev. C 106, 014615 (2022)

A.T.Rudchik, A.A.Rudchik, O.O.Chepurnov, K.W.Kemper, N.Keeley, K.Rusek, E.I.Koshchy, S.Kliczewski, S.Yu.Mezhevych, V.M.Pirnak, O.A.Ponkratenko, R.Siudak, H.M.Maridi, A.P.Ilyin, B.V.Mishchenko, Yu.M.Stepanenko, V.V.Uleshchenko, Yu.O.Shyrma, K.A.Chercas, B.Zalewski

Comparison of 10B + 6Li and 10B + 7Li elastic scattering: The role of ground state reorientation and breakup

NUCLEAR REACTIONS 6Li(10B, 10B), E=51 MeV; measured reaction products, angular distributions; deduced σ(θ), parameters of the optical model potentials, influence of the resonant states on the σ(E) of the α+d breakup. 7Li(10B, 10B), E=51 MeV; analyzed σ(E) and angular distributions from 2007RU13; deduced parameters of the optical model potentials, influence of the resonant states on the σ(E) of the α+t breakup. Comparison to coupled discretized continuum channel (CDCC) calculations. Setup consisting of solid state silicon detectors and gas-filled ionization chamber at U-200P cyclotron of the Heavy Ion Laboratory of the University of Warsaw.

doi: 10.1103/PhysRevC.106.014615
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2022RU07      Iader.Fiz.Enerh. 23, 153 (2022)

A.T.Rudchik, A.A.Rudchik, V.V.Khejlo, K.Rusek, K.W.Kemper, E.Piasecki, A.Stolarz, A.Trzcinska, V.M.Pirnak, O.A.Ponkratenko, E.I.Koshchy, O.E.Kutsyk, S.Y.Mezhevych, A.P.Ilyin, Y.M.Stepanenko, V.V.Uleshchenko, Y.O.Shyrma

Elastic and inelastic scattering of 15N ions by 10B at energy 81 MeV. Isotopic effects in scattering of 15N + 10B, 15N + 11B 14N + 10B nuclei

NUCLEAR REACTIONS 12C(15N, 15N), (15N, 15N'), E=81 MeV; measured reaction products; deduced σ(θ).

doi: 10.15407/jnpae2022.03.153
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD5202.


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
Citations: PlumX Metrics


2021AS05      Phys.Rev. C 103, 044615 (2021)

B.W.Asher, S.Almaraz-Calderon, V.Tripathi, K.W.Kemper, L.T.Baby, N.Gerken, E.Lopez-Saavedra, A.B.Morelock, J.F.Perello, I.Wiedenhover, N.Keeley

Experimental study of the 17F + 12C fusion reaction and its implications for fusion of proton-halo systems

NUCLEAR REACTIONS 12C(17F, X), E=69.1 MeV, [secondary 17F beam from 2H(16O, 17F), E=91.5 MeV primary reaction at the tandem Van de Graaff generator and LINAC accelerator of Florida State University (FSU)]; 12C(16O, X), E=58.1 MeV; 12C(19F, X), E=65 MeV; measured reaction products, total fusion σ using the Encore active-target detector, a multisampling ionization chamber recently developed at FSU; deduced no significant effect of the weak binding and the halo nature of the excited state in 17F on the total fusion cross sections. Comparison with previous experimental cross sections, and with coupled-channel calculations using FRESCO code.

doi: 10.1103/PhysRevC.103.044615
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2021AS09      Eur.Phys.J. A 57, 272 (2021)

B.W.Asher, S.Almaraz-Calderon, K.W.Kemper, L.T.Baby, E.Lopez-Saavedra, A.B.Morelock, J.F.Perello, V.Tripathi, N.Keeley

Resolution of a long-standing discrepancy in the 17O + 12C fusion excitation function

NUCLEAR REACTIONS 12C(17O, X), E(cm) = 14.3-20.5 MeV; measured reaction products; deduced total fusion σ and uncertainties, issues with the discrepant data.

doi: 10.1140/epja/s10050-021-00584-8
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2021GE09      Phys.Rev. C 104, 065807 (2021)

N.Gerken, S.Almaraz-Calderon, B.W.Asher, E.Lopez-Saveedra, L.T.Baby, K.W.Kemper, A.Morelock, J.F.Perello, A.Volya, I.Wiedenhover

Experimental study of the 24Nam(d, p)25Na reaction and implications for the influence of the 24Alm isomer on rp-process nucleosynthesis

NUCLEAR REACTIONS 2H(24Na, p)25Na, E=85.5 MeV, [secondary 24mNa with 90% content and 24Na with 10% from 2H(23Na, p)24,24mNa, E=113 MeV at the John D. Fox Accelerator Laboratory of Florida State University]; measured reaction products, ionization chamber spectrum, production σ and compared with DWBA calculations, E(p), I(p), σ(θ) and compared with DWBA calculations. 25Na; deduced levels, J, π, L-transfers, spectroscopic factors and compared with USDB shell-model calculations. 25Na, 25Si; compiled experimental levels, J, π, and compared with USDB shell-model calculations for A=25 system. 24,24mAl(p, γ)25Si, T=0.01-10 GK; deduced astrophysical reaction rates; evaluated contribution of the 1+ isomeric state in 24Al to the 24Al(p, γ)25Si reaction rate, and compared with rates in REACLIB. Relevance to destruction of 24Al via proton captures in its isomeric state in rp-process nucleosynthesis.

doi: 10.1103/PhysRevC.104.065807
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2703. Data from this article have been entered in the XUNDL database. For more information, click here.


2021KE07      Eur.Phys.J. A 57, 168 (2021)

N.Keeley, K.W.Kemper, K.Rusek

Influence of halo single-neutron transfer on near barrier 15C + 12C total fusion

NUCLEAR REACTIONS 12C(13C, X), (14C, X), (15C, X), (15C, 14C), E(cm)<20 MeV; analyzed available data; deduced single neutron transfer impact on the above barrier total fusion.

doi: 10.1140/epja/s10050-021-00476-x
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2021ME06      Acta Phys.Pol. B52, 109 (2021)

S.Y.Mezhevych, A.T.Rudchik, A.A.Rudchik, K.W.Kemper, K.Rusek, O.A.Ponkratenko, E.I.Koshchy, S.B.Sakuta

14C(11B, 10B)15C Reaction at Elab = 45 MeV and the 10B+15C Optical Potential

NUCLEAR REACTIONS 14C(11B, 10B), E=45 MeV; measured reaction products; deduced spectroscopic amplitudes, σ(θ), optical potential parameters.

doi: 10.5506/aphyspolb.52.109
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD5191. Data from this article have been entered in the XUNDL database. For more information, click here.


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.


2021RU06      Eur.Phys.J. A 57, 10 (2021)

K.Rusek, M.Mazzocco, N.Keeley, K.W.Kemper

Mechanism of the 144Sm(7Li, 6Li*3+)145Sm reaction at 30 MeV

NUCLEAR REACTIONS 144Sm(7Li, 7Li), (7Li, 6Li), E=30 MeV; analyzed available data; calculated σ(θ) using CCBA formalism.

doi: 10.1140/epja/s10050-020-00335-1
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2021RU08      Phys.Rev. C 103, 044614 (2021)

A.T.Rudchik, A.A.Rudchik, O.O.Chepurnov, K.Rusek, N.Keeley, K.W.Kemper, S.Kliczewski, E.Piasecki, A.Trzcinska, Val.M.Pirnak, O.A.Ponkratenko, I.Strojek, E.I.Koshchy, R.Siudak, S.B.Sakuta, A.P.Ilyin, Yu.M.Stepanenko, Yu.O.Shyrma, V.V.Uleshchenko, K.A.Chercas, H.M.Maridi, N.Burtebayev

6Li + 15N interaction at Ec.m. = 23.1 MeV: Validation of the α + d cluster model of 6Li

NUCLEAR REACTIONS 6Li(15N, 15N), (15N, 15N'), (15N, 6Li'), E=81 MeV from the U-200P cyclotron of University of Warsaw]; measured reaction products 15N and 6Li, σ(θ) using four ΔE-E telescopes of silicon detectors. 6Li; deduced differential cross sections for the resonances in 6Li, cluster structure of 6Li and the role of 6Li to α+d breakup. Comparison with optical model (OM), coupled-channel (CC) and coupled discretized continuum channel (CDCC) calculations using FRESCO code by including 6Li to α+d breakup, excitation of 15N levels, and the 15N(6Li, 7Li)14N one-neutron pickup reaction channel.

doi: 10.1103/PhysRevC.103.044614
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Data from this article have been entered in the XUNDL database. For more information, click here.


2021RU10      Iader.Fiz.Enerh. 22, 230 (2021)

A.T.Rudchik, A.A.Rudchik, O.O.Chepurnov, K.Rusek, K.W.Kemper, E.I.Koshchy, S.Yu.Mezhevych, Val.M.Pirnak, O.A.Ponkratenko, A.Stolarz, R.Siudak, A.P.Ilyin, Yu.M.Stepanenko, V.V.Uleshchenko, Yu.O.Shyrma

6Li(10B, 9Be)7Be reaction mechanisms. Structure and interaction of 9Be + 7Be nuclei

NUCLEAR REACTIONS 6Li(10B, 9Be), E=51 MeV; measured reaction products; deduced σ(θ), spectroscopic factors. Comparison with coupled-reaction-channels method (CRC).

doi: 10.15407/jnpae2021.03.230
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD5194.


2021TR09      Phys.Rev. C 104, 054605 (2021)

V.Tripathi, K.W.Kemper, L.T.Baby, P.C.Bender, S.L.Tabor, N.Keeley

Impact of nucleon transfer channels on complete fusion in the 6, 7Li + 58Ni reactions near the Coulomb barrier

NUCLEAR REACTIONS 58Ni(6Li, 6Li), (7Li, 7Li), (6Li, X), (7Li, X), 59Ni/59Cu/61Cu/62Cu/62Zn, E=10-22 MeV beam from the Superconducting Accelerator Laboratory at Florida State University; measured reaction products, Eγ, Iγ, residue σ(E), total residue σ(E); deduced n-stripping and p-stripping transfer σ(E). Comparison with statistical model calculations using code PACE4, with coupled reaction channels (CRC) calculations using the code FRESCO, and with coupled-channels calculations using the code CCFULL.

doi: 10.1103/PhysRevC.104.054605
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2701.


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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2020HU10      Phys.Rev. C 102, 014615 (2020)

C.Hunt, G.V.Rogachev, S.Almaraz-Calderon, A.Aprahamian, M.Avila, L.T.Baby, B.Bucher, V.Z.Goldberg, E.D.Johnson, K.W.Kemper, A.N.Kuchera, W.P.Tan, I.Wiedenhover

Observation of T = 3/2 isobaric analog states in 9Be using p + 8Li resonance scattering

NUCLEAR REACTIONS 1H(8Li, 8Li), E(cm)=1.46-2.3 MeV, [secondary 8Li radioactive beam from 2H(7Li, 8Li), E=23.5, 27 MeV primary reaction]; measured energies of light and heavy recoils, (light recoils)(heavy recoils)-coin, differential σ(θ, E) using two annular Silicon strip detectors at RESOLUT radioactive nuclear beam facility of the FSU John D. Fox Superconducting Accelerator Laboratory. 9Be; deduced resonances J, π, width, T=3/2 IAS, spectroscopic factors from R-matrix analysis using MINRMATRIX code. Discussed isomirror properties for the T=3/2 A=9 isoquartet. Relevance to study of the structure of neutron-rich exotic nuclei through IAS.

doi: 10.1103/PhysRevC.102.014615
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2020KE04      Phys.Rev. C 102, 014617 (2020)

N.Keeley, K.W.Kemper, K.Rusek

Multistep processes in heavy-ion-induced single-nucleon transfer reactions

NUCLEAR REACTIONS 208Pb(12C, 11B), (12C, 13C), E=77.4, 97.9, 101, 116.4 MeV; calculated differential σ(θ, E) using coupled channel Born approximation calculations with the inclusion of a two-step transfer path. Comparison with finite-range distorted wave Born approximation (FR-DWBA) calculations. Comparison with CCBA calculations, and with experimental data.

doi: 10.1103/PhysRevC.102.014617
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2020KE09      Eur.Phys.J. A 56, 263 (2020)

N.Keeley, K.W.Kemper, K.Rusek

Important Influence of Entrance Channel Reorientation Coupling on Proton Stripping

NUCLEAR REACTIONS 208Pb(7Li, 6He), E=52 MeV; analyzed available data; calculated σ(θ); deduced optical model parameters, spectroscopic factors.

doi: 10.1140/epja/s10050-020-00271-0
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2020MA45      Phys.Rev. C 102, 034609 (2020)

I.Martel, N.Keeley, K.W.Kemper, K.Rusek

Multi-neutron transfer in 8He-induced reactions near the Coulomb barrier

NUCLEAR REACTIONS 208Pb(8He, 6He), (8He, α), E=22 MeV; analyzed GANIL experimental data in 2018Ma56 using DWBA; deduced 1n- and 2n-stripping components, direct four-neutron (4n) stripping as the main mechanism for 4He production.

doi: 10.1103/PhysRevC.102.034609
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2020ME10      Acta Phys.Pol. B51, 1949 (2020)

S.Y.Mezhevych, A.T.Rudchik, A.A.Rudchik, K.W.Kemper, K.Rusek, O.A.Ponkratenko, e.I.Koshchy, SB.Sakuta

13C(11B, 12C)12B Reaction at 45 MeV, 12C + 12B Interaction Versus that of 12C + 10, 11B

NUCLEAR REACTIONS 13C(11B, 12C), E=45 MeV; measured reaction products, 12C, 12B; deduced parameters of WS optical potentials, spectroscopic amplitudes, σ(θ). Comparison with available data.

doi: 10.5506/APhysPolB.51.1949
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2020MO32      Phys.Rev. C 102, 034325 (2020)

S.Momiyama, K.Wimmer, D.Bazin, J.Belarge, P.Bender, B.Elman, A.Gade, K.W.Kemper, N.Kitamura, B.Longfellow, E.Lunderberg, M.Niikura, S.Ota, P.Schrock, J.A.Tostevin, D.Weisshaar

Shell structure of 43S and collapse of the N=28 shell closure

NUCLEAR REACTIONS 9Be(44S, 43S), E=93.7 MeV/nucleon, [44S secondary beam from 9Be(48Ca, X), E=140 MeV/nucleon primary reaction, followed by separation and identification of 44S ions by A1900 separator and S800 spectrograph at the NSCL-MSU cyclotron facility]; measured reaction products, Eγ, Iγ, Doppler-corrected γ-ray spectrum using GRETINA array, delayed γ rays from the decay of isomeric states using IsoTagger consisting of 32 CsI(Na) detectors, (43S)γ- and γγ-coin, parallel momentum distributions. 43S; deduced levels, J, π, inclusive and exclusive cross sections for bound states, spectroscopic factors. Comparison with shell-model calculations using SDPF-U and SDPF-MU effective interactions. 44S; deduced intruder configuration in the ground state and N=28 shell quenching from the removal of a 2p3/2 neutron.

doi: 10.1103/PhysRevC.102.034325
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2020NA30      Chin.Phys.C 44, 104103 (2020)

M.Nassurlla, N.Burtebayev, T.Kh.Sadykov, I.Boztosun, N.Amangeldi, D.Alimov, Z.Kerimkulov, J.Burtebayeva, M.Nassurlla, A.Kurakhmedov, S.B.Sakuta, M.Karakoc, A.A.Ibraheem, K.W.Kemper, S.Hamada

New measurements and reanalysis of 14N elastic scattering on 10B target

NUCLEAR REACTIONS 10B(14N, 14N), E= 38-94.0 MeV; measured reaction products; deduced σ(θ), possible contribution of the α-cluster exchange mechanism, spectroscopic amplitudes using the optical model and the distorted waves Born approximation method.

doi: 10.1088/1674-1137/abab89
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2019BU13      Int.J.Mod.Phys. E28, 1950028 (2019)

N.Burtebayev, M.Nassurlla, A.Sabidolda, S.B.Sakuta, A.A.Karakhodjaev, F.X.Ergashev, K.Rusek, E.Piasecki, A.Trzcinska, M.Wolinska-Cichocka, M.Kowalczyk, B.Mauyey, D.Janseitov, B.Zalewski, Sh.Hamada, K.W.Kemper, A.A.Ibraheem

Measurement and analysis of 10B + 12C elastic scattering at energy of 41.3 MeV

NUCLEAR REACTIONS 12C(10B, 10B), E=41.3 MeV; measured reaction products; deduced σ(θ), optical model parameters.

doi: 10.1142/S0218301319500289
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2019GA15      Phys.Rev.Lett. 122, 222501 (2019)

A.Gade, B.A.Brown, J.A.Tostevin, D.Bazin, P.C.Bender, C.M.Campbell, H.L.Crawford, B.Elman, K.W.Kemper, B.Longfellow, E.Lunderberg, D.Rhodes, D.Weisshaar

Is the Structure of 42Si Understood?

NUCLEAR REACTIONS 9Be(43P, 42Si), E=140 MeV/nucleon; measured reaction products, Eγ, Iγ. 42Si; deduced γ-ray energies, partial proton removal σ. Comparison with theoretical calculations.

doi: 10.1103/PhysRevLett.122.222501
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2019KE03      Phys.Rev. C 99, 024603 (2019)

N.Keeley, K.W.Kemper, I.Martel, K.Rusek, A.M.Sanchez-Benitez

Comparison of the energy dependence of near-barrier 6He and 8He + 208Pb optical potentials

NUCLEAR REACTIONS 208Pb(6He, 6He), (6He, X), (8He, 8He), (8He, X), E=16, 22 MeV; analyzed σ(θ, E) using optical model using FRESCO code; deduced optical potential parameters; calculated total reaction σ(E).

doi: 10.1103/PhysRevC.99.024603
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2019RI01      Phys.Rev.Lett. 122, 182701 (2019)

N.Rijal, I.Wiedenhover, J.C.Blackmon, M.Anastasiou, L.T.Baby, D.D.Caussyn, P.Hoflich, K.W.Kemper, E.Koshchiy, G.V.Rogachev

Measurement of d + 7Be Cross Sections for Big-Bang Nucleosynthesis

NUCLEAR REACTIONS 2H(7Be, p), E=19.7 MeV; measured reaction products, Ep, Ip, Eα, Iα. 9B; deduced σ, resonance energies and widths, S-factor, reaction rates.

doi: 10.1103/PhysRevLett.122.182701
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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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2019RU01      Acta Phys.Pol. B50, 753 (2019)

A.T.Rudchik, A.A.Rudchik, O.E.Kutsyk, K.W.Kemper, S.Kliczewski, K.Rusek, E.Piasecki, A.Trzcinska, E.I.Koshchy, Val.M.Pirnak, O.A.Ponkratenko, I.Strojek, V.A.Plujko, A.Stolarz, S.B.Sakuta, R.Siudak, O.V.Herashchenko, A.P.Ilyin, Yu.M.Stepanenko, Yu.O.Shyrma, V.V.Uleshchenko

Elastic and Inelastic Scattering of 15N Ions by 12C at 81 MeV and the Effect of Transfer Channels

NUCLEAR REACTIONS 12C(15N, 15N), (15N, 15N'), E=81 MeV; measured reaction products; deduced σ(θ), deformation parameters, parameters of Woods-Saxon potentials.

doi: 10.5506/APhysPolB.50.753
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2019RU04      Nucl.Phys. A992, 121638 (2019)

A.T.Rudchik, A.A.Rudchik, O.E.Kutsyk, K.W.Kemper, K.Rusek, E.Piasecki, A.Trzcinska, S.Kliczewski, E.I.Koshchy, Val.M.Pirnak, O.A.Ponkratenko, I.Strojek, V.A.Plujko, S.B.Sakuta, R.Siudak, A.P.Ilyin, Yu.M.Stepanenko, Yu.O.Shyrma, V.V.Uleshchenko

12C(15N, 14C)13N reaction at 81 MeV. Competition between one and two particle transfers

doi: 10.1016/j.nuclphysa.2019.121638
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2019WE12      Phys.Rev. C 100, 024604 (2019)

W.D.Weintraub, N.Keeley, K.W.Kemper, K.Kravvaris, F.Marechal, D.Robson, B.T.Roeder, K.Rusek, A.Volya

Analyzing powers and the role of multistep processes in the 12C(7Li, t)16O reaction

NUCLEAR REACTIONS 12C(7Li, t), (polarized 7Li, t)16O, E=34 MeV; measured E(t), I(t), σ(θ), T10, T20 and T30 analyzing powers using two ΔE-E telescopes of Si detectors at the FSU tandem accelerator facility. 16O; deduced levels, J, π; calculated Sα spectroscopic amplitudes and relative angular momentum for the various components of the 16O=α+12C radial wave functions from the shell model calculations. Coupled channel Born approximation (CCBA) and DWBA analyses of σ(θ) and analyzing power data.

doi: 10.1103/PhysRevC.100.024604
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2018AV01      Phys.Rev. C 97, 014313 (2018)

M.L.Avila, L.T.Baby, J.Belarge, N.Keeley, K.W.Kemper, E.Koshchiy, A.N.Kuchera, G.V.Rogachev, K.Rusek, D.Santiago-Gonzalez

Sub-Coulomb 3He transfer and its use to extract three-particle asymptotic normalization coefficients

NUCLEAR REACTIONS 6Li(13C, t)16O, E=7.72 MeV; measured triton spectra, σ(θ) using two ΔE-E counter telescopes at the tandem van de Graaff John D. Fox accelerator laboratory of Florida State University. 16O; deduced levels, J, π, spectroscopic factors and asymptotic normalization coefficients (ANCs) for 16O and 13C+3He overlaps, DWBA analysis of σ(θ) distributions for 0+, 3-, 2+ and 1- states in 16O.

doi: 10.1103/PhysRevC.97.014313
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2018HA22      Phys.Rev. C 97, 054609 (2018)

Sh.Hamada, N.Keeley, K.W.Kemper, K.Rusek

Cluster folding analysis of 20Ne + 16O elastic transfer

NUCLEAR REACTIONS 16O(20Ne, 16O)20Ne, E(cm)=24.5, 24.7, 27.9, 28.2, 29.1, 31.7, 32.1, 33.0, 35.5 MeV; analyzed experimental σ(θ, E) data using optical model cluster folding including elastic transfer process via DWBA; deduced σ, spectroscopic factors, and real and imaginary volume integrals per nucleon pair. Relevance to α-particle structure of nuclei.

doi: 10.1103/PhysRevC.97.054609
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2018KE03      Eur.Phys.J. A 54, 71 (2018)

N.Keeley, K.W.Kemper, K.Rusek

A cautionary tale: The Coulomb modified ANC for the 1/2+2 state in 17O

RADIOACTIVITY 17O(α); calculated ANC (Asymptotic Normalization Coefficient) for the decay of 1/2+2 state excitation energy, uncertainty of Q; deduced limit of ANC precision as dependent on Q.

doi: 10.1140/epja/i2018-12507-5
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2018MA56      Phys.Rev. C 98, 034615 (2018)

G.Marquinez-Duran, I.Martel, A.M.Sanchez-Benitez, L.Acosta, J.L.Aguado, R.Berjillos, A.R.Pinto, T.Garcia, J.A.Duenas, K.Rusek, N.Keeley, K.W.Kemper, M.A.G.Alvarez, M.J.G.Borge, A.Chbihi, C.Cruz, M.Cubero, J.P.Fernandez-Garcia, B.Fernandez-Martinez, J.L.Flores, J.Gomez-Camacho, J.A.Labrador, F.M.Marques, A.M.Moro, M.Mazzocco, A.Pakou, V.V.Parkar, N.Patronis, V.Pesudo, D.Pierroutsakou, R.Raabe, R.Silvestri, N.Soic, L.Standylo, I.Strojek, O.Tengblad, R.Wolski, Z.Abou-Haidar

Interaction of 8He with 208Pb at near-barrier energies: 4He and 6He production

NUCLEAR REACTIONS 208Pb(8He, 6He), (8He, α), (8He, 8He), E=16, 22 MeV; measured reaction products, and differential σ(θ) using GLORIA detector array of SPIRAL-GANIL facility; deduced σ(2n)/σ(1n) ratio. Comparison with optical model and DWBA calculations. Inferred dominant neutron-stripping mechanism.

doi: 10.1103/PhysRevC.98.034615
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2018RU03      Nucl.Phys. A971, 138 (2018)

A.T.Rudchik, A.A.Rudchik, L.M.Muravynets, K.W.Kemper, K.Rusek, E.I.Koshchy, E.Piasecki, A.Trzcinska, Val.M.Pirnak, O.A.Ponkratenko, I.Strojek, A.Stolarz, V.A.Plujko, S.B.Sakuta, R.Siudak, A.P.Ilyin, Yu.M.Stepanenko, Yu.O.Shyrma, V.V.Uleshchenko

7Li(15N, 14C)8Be reaction at 81 MeV and 14C + 8Be interaction versus that of 13C + 8Be

NUCLEAR REACTIONS 7Li(15N, 14C)8Be, E=81 MeV; measured reaction products angular distributions to 8Be gs and first two excited states; deduced σ(θ); calculated σ(θ) using CRC (Coupled Reaction Channels) FRESCO code with potential from earlier analyses and spectroscopic amplitudes using TISM (Translationally Invariant Shell Model) code DESNA. 8Be(14C, 13C), E not given;13C(8Be, 7Li), E not given; calculated σ(θ) using CRC; deduced WS potential parameters to be used for the 7Li(15N, 14C)8Be.

doi: 10.1016/j.nuclphysa.2018.01.014
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2018RU05      Acta Phys.Pol. B49, 353 (2018)

K.Rusek, N.Keeley, K.W.Kemper, J.L.Aguado-Casas, T.Garcia, I.Martel, A.M.Sanchez-Benitez

Pairing in Exotic He Isotopes

NUCLEAR REACTIONS 206Pb(6He, α)208Pb, E=18 MeV;208Pb(8He, 6He), E not given; calculated, reanalyzed 2n transfer probabilities vs the closest approach

NUCLEAR STRUCTURE 6,8He; calculated, reanalyzed 2n transfer probability data; deduced strong pairing of 2 valence neutrons in 6He, similar to that found in 18O, weaker, but still strong effect for 6He.

doi: 10.5506/aphyspolb.49.353
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2017CO07      Phys.Rev. C 95, 064323 (2017)

J.R.Cottle, V.Tripathi, B.A.Brown, B.Abromeit, J.M.Allmond, M.Anastasiou, L.T.Baby, J.S.Baron, P.D.Cottle, R.Dungan, T.C.Hensley, K.W.Kemper, R.S.Lubna, N.Rijal, E.Rubino, S.L.Tabor, P.-L.Tai, K.Villafana, I.Wiedenhoever

Complete spectroscopy of 211Po below 2.0 MeV via the (α, n) reaction

NUCLEAR REACTIONS 208Pb(α, n), E=24 MeV; measured Eγ, Iγ, γγ-coin using enriched target and an array of six HPGe Clover detectors at the FN tandem accelerator of Florida State University. 211Po; deduced levels, J, π, configurations. Comparison with shell model calculation using the modified Kuo-Herling interaction.

doi: 10.1103/PhysRevC.95.064323
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2017EL04      Phys.Rev. C 96, 044332 (2017)

B.Elman, A.Gade, D.Weisshaar, D.Barofsky, D.Bazin, P.C.Bender, M.Bowry, M.Hjorth-Jensen, K.W.Kemper, S.Lipschutz, E.Lunderberg, N.Sachmpazidi, N.Terpstra, W.B.Walters, A.Westerberg, S.J.Williams, K.Wimmer

Quadrupole collectivity beyond N = 50 in neutron-rich Se and Kr isotopes

NUCLEAR REACTIONS 209Bi(88Kr, 88Kr'), E=67 MeV/nucleon; 209Bi(90Kr, 90Kr'), E=68 MeV/nucleon; 209Bi(86Se, 86Se'), E=79 MeV/nucleon, [secondary 88,90Kr, 86Se beams from 9Be(96Zr, X), E=120 MeV/nucleon using A1900 fragment separator at the NSCL-MSU Cyclotron Laboratory]; measured reaction products and particle identification plot, Doppler-corrected Eγ, Iγ, (particle)γ-coin, σ, using the CAESAR array of 192 CsI(Na) scintillators. 88,90Kr, 86Se; deduced levels, J, π, Coulomb excitation yields, B(E2) for excited 2+ states. Comparison with shell-model calculations. 88,90Kr, 86Se; calculated shell-model occupations of the proton and neutron orbitals for the observed levels. Systematics of B(E2) values for the first 2+ states in N=36-60 Kr and Se nuclei.

doi: 10.1103/PhysRevC.96.044332
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2017HE15      Phys.Rev. C 96, 034325 (2017)

T.C.Hensley, P.D.Cottle, V.Tripathi, B.Abromeit, M.Anastasiou, L.T.Baby, J.S.Baron, D.Caussyn, R.Dungan, K.W.Kemper, R.S.Lubna, S.L.Miller, N.Rijal, M.A.Riley, S.L.Tabor, P.-L.Tai, K.Villafana

High spin spectroscopy in 219Ra: Search for the lower mass boundary of the region of statically octupole-deformed nuclei

NUCLEAR REACTIONS 208Pb(14C, 3n), E=68 MeV; measured Eγ, Iγ, γγ-coin, γγ(θ)(DCO) using an array of Compton-suppressed seven single crystal HPGe detectors and three clover-style HPGe detectors at the FN Tandem accelerator laboratory of Florida State University. 219Ra; deduced high-spin levels, J, π, multipolarities, octupole bands, evidence for stable octupole deformation. Systematics of energy splitting between candidates for simplex partner bands in 219,221Ra, 221,223Th.

doi: 10.1103/PhysRevC.96.034325
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2017MA06      Phys.Rev. C 95, 024602 (2017)

G.Marquinez-Duran, N.Keeley, K.W.Kemper, R.S.Mackintosh, I.Martel, K.Rusek, A.M.Sanchez-Benitez

Influence of single-neutron stripping on near-barrier 6He 208Pb and 8He + 208Pb elastic scattering

NUCLEAR REACTIONS 208Pb(6He, 6He), (8He, 8He), E=22 MeV; analyzed σ(θ) data, total reaction cross sections for the bare and summed 1n-stripping cross sections; deduced optical model parameters, dynamic polarization potentials, and effect of single-neutron stripping on elastic scattering. Coupled reaction channels (CRC) and S-matrix calculations.

doi: 10.1103/PhysRevC.95.024602
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2017ME04      Phys.Rev. C 95, 034607 (2017)

S.Yu.Mezhevych, A.T.Rudchik, A.A.Rudchik, O.A.Ponkratenko, N.Keeley, K.W.Kemper, M.Mazzocco, K.Rusek, S.B.Sakuta

Cluster structure of 17O

NUCLEAR REACTIONS 13C(11B, 7Li)17O, E=45 MeV; measured particle spectra, σ(θ) using ΔE-E telescopes at the Heavy Ion Laboratory of the University of Warsawa; analyzed σ(θ) data by coupled-channel Born approximation (CCBA) calculations 17O; deduced levels, α+13C spectroscopic factors from a comparison of experimental data and the calculations at forward angles for the compound nucleus using code HELGA.

doi: 10.1103/PhysRevC.95.034607
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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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2017RU01      Nucl.Phys. A958, 234 (2017)

A.T.Rudchik, A.A.Rudchik, L.M.Muravynets, K.W.Kemper, K.Rusek, E.Piasecki, A.Trzcinska, E.I.Koshchy, Val.M.Pirnak, O.A.Ponkratenko, I.Strojek, A.Stolarz, O.V.Herashchenko, Yu.M.Stepanenko, V.A.Plujko, S.B.Sakuta, R.Siudak, A.Szczurek

Elastic and inelastic scattering of 15N ions by 7Li at 81 MeV versus that of 14N ions by 7Li at 80 and 110 MeV

NUCLEAR REACTIONS 7Li(15N, 15N), (15N, 15N'), E=81 MeV;7Li(14N, 14N), (14N, 14N'), E=80, 110 MeV. 7Li measured E(7Li), I(θ, 7Li) using ΔE-E Si telescopes; deduced σ(θ); calculated spectroscopic amplitudes, deformation. σ(θ), reaction σ using CC within TISM (Translational Invariant Shell Model); deduced potential parameters.

doi: 10.1016/j.nuclphysa.2016.12.007
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2016MA79      Phys.Rev. C 94, 064618 (2016)

G.Marquinez-Duran, I.Martel, A.M.Sanchez-Benitez, L.Acosta, R.Berjillos, J.Duenas, K.Rusek, N.Keeley, M.A.G.Alvarez, M.J.G.Borge, A.Chbihi, C.Cruz, M.Cubero, J.P.Fernandez-Garcia, B.Fernandez-Martinez, J.L.Flores, J.Gomez-Camacho, K.W.Kemper, J.A.Labrador, M.Marques, A.M.Moro, M.Mazzocco, A.Pakou, V.V.Parkar, N.Patronis, V.Pesudo, D.Pierroutsakou, R.Raabe, R.Silvestri, N.Soic, L.Standylo, I.Strojek, O.Tengblad, R.Wolski, Z.Abou-Haidar

Precise measurement of near-barrier 8He+ 208Pb elastic scattering: Comparison with 6He

NUCLEAR REACTIONS 208Pb(8He, 8He), E=22 MeV, [secondary 8He beam from C(13C, X), E=75 MeV/nucleon primary reaction using SPIRAL2 facility at GANIL]; measured scattered particles and reaction fragments, and angular distributions using the Global Reaction Array (GLORIA) detection system; deduced optical model parameters using optical model analysis for data from the present experiment and those from previous 208Pb(6He, 6He), E=22 MeV reaction, much longer range absorption for 6He as compared to that for 8He.

doi: 10.1103/PhysRevC.94.064618
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2016ME05      Acta Phys.Pol. B47, 815 (2016)

C.E.Mertin, L.T.Baby, D.D.Caussyn, K.W.Kemper, N.Keeley, S.A.Kuvin, A.V.Skeeters, I.Wiedenhover

Population of Levels in 15O up to 15 MeV in Excitation by the 14N(3He, d) Reaction

NUCLEAR REACTIONS 14N(3He, d), E=20 MeV; measured reaction products; deduced level energies, J, π. Comparison with available data.

doi: 10.5506/APhysPolB.47.815
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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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2016RU02      Nucl.Phys. A947, 161 (2016)

A.T.Rudchik, K.A.Chercas, K.W.Kemper, K.Rusek, A.A.Rudchik, O.V.Herashchenko, E.I.Koshchy, Val.M.Pirnak, E.Piasecki, A.Trzcinska, S.B.Sakuta, R.Siudak, I.Strojek, A.Stolarz, A.P.Ilyin, O.A.Ponkratenko, Yu.M.Stepanenko, Yu.O.Shyrma, A.Szczurek, V.V.Uleshchenko

Elastic and inelastic scattering of 15N ions by 9Be at 84 MeV

NUCLEAR REACTIONS 9Be(15N, 15N), (15N, 15N'), E=84 MeV; measured reaction products by four ΔE-E telescopes at different angles; deduced σ(θ) to discrete states; calculated 9Be+15N double-folding potential using M3Y potential and charge distribution in both nuclei from literature, σ(θ) using optical model and CRC; deduced reaction mechanism, potential parameters, deformation.

doi: 10.1016/j.nuclphysa.2016.01.002
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2015AV01      Phys.Rev.Lett. 114, 071101 (2015)

M.L.Avila, G.V.Rogachev, E.Koshchiy, L.T.Baby, J.Belarge, K.W.Kemper, A.N.Kuchera, A.M.Mukhamedzhanov, D.Santiago-Gonzalez, E.Uberseder

Constraining the 6.05 MeV 0+ and 6.13 MeV 3- Cascade Transitions in the 12C(α, γ)16O Reaction Using the Asymptotic Normalization Coefficients

NUCLEAR REACTIONS 6Li(12C, d), E=5, 7, 9 MeV; measured reaction products; deduced σ(θ), J, π, asymptotic normalization coefficients. Comparison with available data, DWBA calculations.

doi: 10.1103/PhysRevLett.114.071101
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2015AV02      Phys.Rev. C 91, 048801 (2015)

M.L.Avila, G.V.Rogachev, E.Koshchiy, L.T.Baby, J.Belarge, K.W.Kemper, A.N.Kuchera, D.Santiago-Gonzalez

New measurement of the α asymptotic normalization coefficient of the 1/2+ state in 17O at 6.356 MeV that dominates the 13C(α, n)16O reaction rate at temperatures relevant for the s process

NUCLEAR REACTIONS 6Li(13C, d)17O, E=8 MeV; measured deuteron spectra, σ(θ) using ΔE-E telescopes at FSU Tandem accelerator facility. 17O; deduced levels, squared Coulomb-modified asymptotic normalization coefficient (ANC) and spectroscopic factor Sα for 1/2+ state at 6.356 MeV. Relevance to astrophysical s process and reaction rate for the 13C(α, n)16O at T<100 MK.

doi: 10.1103/PhysRevC.91.048801
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2015KE07      Phys.Rev. C 92, 054618 (2015)

N.Keeley, K.W.Kemper, K.Rusek

Strong multistep interference effects in 12C(d, p) to the 9/2+1 state in 13C

NUCLEAR REACTIONS 12C(d, p), E=30 MeV; calculated σ(θ) for 9.50-MeV, 9/2+ resonance in 13C, and compared with experimental data; deduced best fit spectroscopic amplitudes and corresponding empirical mixing ratios for the various possible configurations of states. Coupled reaction channel calculation (CCRC) including the two-step transfer via the 12C 4.44-MeV, 2+ state, the direct one-step transfer via the 12C 0+ ground state, with and without the two-step transfer via the 12C 9.64-MeV, 3- state. Discussed kinematic effect associated with different transfer routes.

doi: 10.1103/PhysRevC.92.054618
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2015ME03      Phys.Rev. C 91, 044317 (2015)

C.E.Mertin, D.D.Caussyn, A.M.Crisp, N.Keeley, K.W.Kemper, O.Momotyuk, B.T.Roeder, A.Volya

Single particle strengths and mirror states in 15N - 15O below 12.0 MeV

NUCLEAR REACTIONS 14N(d, p), E=16 MeV; measured proton and deuteron spectra, σ(θ) using ΔE-E telescopes at FSU tandem-linac accelerator facility. 15N; deduced levels, J, π, l-transfers. DWBA analysis. 12C(d, p)13C, E=16 MeV; measured proton spectra to identify 13C contaminant peaks in the higher excitation energy region. 15N, 15O; comparison of mirror states. Comparison with previous experimental data, and with shell model calculations.

doi: 10.1103/PhysRevC.91.044317
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2015RU04      Phys.Rev. C 91, 044612 (2015)

K.Rusek, N.Keeley, K.W.Kemper, A.T.Rudchik

Effect of the exit reaction channels on 6Li+18O elastic scattering

NUCLEAR REACTIONS 6Li(18O, 6Li), (18O, 7Li), E=114 MeV; calculated elastic and one-neutron pickup σ(θ); deduced role of 6Li breakup and pickup reactions. Continuum discretized coupled-channel and coupled-reaction-channel (CRC) calculations with optical model potentials. Comparison with experimental data.

doi: 10.1103/PhysRevC.91.044612
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2015RU05      Nucl.Phys. A939, 1 (2015)

A.T.Rudchik, O.V.Herashchenko, K.W.Kemper, K.Rusek, S.Kliczewski, K.A.Chercas, A.A.Rudchik, E.I.Koshchy, Val.M.Pirnak, E.Piasecki, A.Trczinska, S.B.Sakuta, R.Siudak, I.Strojek, A.Stolarz, A.O.Barabash, A.P.Ilyin, O.A.Ponkratenko, Yu.M.Stepanenko, Yu.O.Shyrma, V.V.Uleshchenko, J.Choinski, A.Szczurek

15N elastic and inelastic scattering by 11B at 84 MeV

NUCLEAR REACTIONS 11B(15N, 15N), (15N, 15N'), E=84 MeV;measured reaction products using ICARE set-up ΔE-E gas and semiconductor telescopes; deduced σ(θ); calculated σ(θ) using optical model and CC. 11B, 15N deduced deformation parameters, ground and excited states reorientation, potential parameters.

doi: 10.1016/j.nuclphysa.2015.02.006
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2015RU06      Nucl.Phys. A941, 167 (2015)

A.T.Rudchik, O.V.Herashchenko, K.W.Kemper, K.Rusek, S.Kliczewski, K.A.Chercas, A.A.Rudchik, E.I.Koshchy, Val.M.Pirnak, E.Piasecki, A.Trzcinska, S.B.Sakuta, R.Siudak, I.Strojek, A.Stolarz, S.O.Odzhikovskyi, A.P.Ilyin, O.A.Ponkratenko, Yu.M.Stepanenko, Yu.O.Shyrma, V.V.Uleshchenko, A.Szczurek

Elastic and inelastic scattering of 14N ions by 11B at 88 MeV versus that of 15N + 11B at 84 MeV

NUCLEAR REACTIONS 11B(14N, 14N), (14N, 14N'), E=88 MeV;11B(15N, 15N), E=84 MeV; measured nitrogen energy spectra at angles; deduced σ(θ); calculated σ(θ) using optical model and CC with reorientation and one- and two-step transfer reactions; deduced reaction mechanisms, optical model parameters, spectroscopic amplitudes for different (mainly d, t, 3He, α) clusters, deformation.

doi: 10.1016/j.nuclphysa.2015.06.012
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2015ST06      Phys.Rev. C 91, 041302 (2015)

S.R.Stroberg, A.Gade, J.A.Tostevin, V.M.Bader, T.Baugher, D.Bazin, J.S.Berryman, B.A.Brown, C.M.Campbell, K.W.Kemper, C.Langer, E.Lunderberg, A.Lemasson, S.Noji, T.Otsuka, F.Recchia, C.Walz, D.Weisshaar, S.Williams

Neutron single-particle strength in silicon isotopes: Constraining the driving forces of shell evolution

NUCLEAR REACTIONS 9Be(36Si, 35Si), E=100 MeV/nucleon; 9Be(38Si, 37Si), E=95 MeV/nucleon; 9Be(40Si, 39Si), E=85 MeV/nucleon, [secondary 36,38,40Si beams from fragmentation of 48Ca]; measured Eγ, Iγ, γγ-coin using GRETINA array at NSCL-MSU facility; deduced momentum distributions and partial cross sections of the residual nuclei following one-neutron knockout reactions. 35,37,39Si; deduced levels, intruder states, J, π, half-life of a level in 39Si. Comparison with shell-model calculations with SDPF-U and SDPF-MU interactions.

doi: 10.1103/PhysRevC.91.041302
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2014AV04      Phys.Rev. C 90, 024327 (2014)

M.L.Avila, G.V.Rogachev, V.Z.Goldberg, E.D.Johnson, K.W.Kemper, Yu.M.Tchuvil'sky, A.S.Volya

α-cluster structure of 18O

NUCLEAR REACTIONS 4He(14C, α), E=14.9 MeV; measured Eα, Iα, differential σ(E), partial α- and neutron-decay widths at FSU Superconducting linear accelerator facility. 18O; deduced levels, resonances, J, π, widths, reduced α widths. Multilevel, multichannel R-matrix analysis. Discussed rotational bands, and α-cluster structure with reference to those in 16O and 20Ne. Comparison with cluster-nucleon configuration interaction model calculations, and with earlier experimental results.

doi: 10.1103/PhysRevC.90.024327
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2014AV05      Phys.Rev. C 90, 042801 (2014)

M.L.Avila, G.V.Rogachev, E.Koshchiy, L.T.Baby, J.Belarge, K.W.Kemper, A.N.Kuchera, D.Santiago-Gonzalez

α-cluster asymptotic normalization coefficients for nuclear astrophysics

NUCLEAR REACTIONS 6Li(16O, d)20Ne, E=12.75 MeV; measured deuteron spectra, ΔE-E plot, σ(θ) for 1- state at 5.79 MeV at FSU's Tandem accelerator facility. 20Ne; deduced levels, α width as a function of binding energy of 1- state at 5.79 MeV, asymptotic normalization coefficients (ANCs). DWBA analysis of σ(θ) data. Comparison with known α width. Relevance to astrophysically important reaction rates.

doi: 10.1103/PhysRevC.90.042801
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2014KE04      Eur.Phys.J. A 50, 145 (2014)

N.Keeley, K.W.Kemper, K.Rusek

Strong coupling effects in near-barrier heavy-ion elastic scattering

doi: 10.1140/epja/i2014-14145-3
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2014ME02      Eur.Phys.J. A 50, 4 (2014)

S.Yu.Mezhevych, A.T.Rudchik, K.Rusek, K.W.Kemper, S.Kliczewski, E.I.Koshchy, A.A.Rudchik, S.B.Sakuta, J.Choinski, B.Czech, R.Siudak, A.Szczurek

Elastic and inelastic scattering of 14C + 11B versus 12, 13C + 11B

NUCLEAR REACTIONS 12,13,14C(11B, 11B), (11B, 11B'), (11B, X), E=45 MeV; measured reaction products using Δ E-E with silicon Δ E and with ionization chamber; deduced ejectile residual energy, σ(θ); calculated σ(θ) using optical model and CC; deduced optical model parameters. 11B, 14C deduced levels, J, π, coupling schemes, spin reorientation. 11,12,13B, 12,13,14,15C, 15N deduced p, n, 2n, d, t, α spectroscopic amplitudes.

doi: 10.1140/epja/i2014-14004-3
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2014ME04      Acta Phys.Pol. B45, 159 (2014)

C.E.Mertin, D.D.Caussyn, A.M.Crisp, N.Keeley, K.W.Kemper, O.Momotyuk, B.T.Roeder, A.Volya

Separation Between d5/2 and s1/2 Neutron Single Particle Strength in 15N

NUCLEAR REACTIONS 14N(d, p), E=16 MeV; measured reaction products, Ep, Ip; deduced σ(θ), spectroscopic factors. FRESCO calculations.

doi: 10.5506/APhysPolB.45.159
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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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2014RO26      Phys.Rev. C 90, 047601 (2014)

F.J.Rodriguez, J.A.Liendo, N.Keeley, K.W.Kemper, J.A.Mielgo, B.T.Roeder, W.D.Weintraub

TT20 analyzing powers from 12C(7Li, α)15N

NUCLEAR REACTIONS 12C(polarized 7Li, α)15N, E=34 MeV; measured Eα, Iα, transverse analyzing powers TT20(θ) using ΔE-E telescope detectors at FSU Tandem-Linear Accelerator (LINAC) facility. 15N; deduced levels, magnitude and shapes of analyzing power distributions for various Jπ values.

doi: 10.1103/PhysRevC.90.047601
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2014RU01      Nucl.Phys. A922, 71 (2014)

A.T.Rudchik, S.Kliczewski, K.A.Chercas, K.W.Kemper, E.I.Koshchy, K.Rusek, A.A.Rudchik, S.Yu.Mezhevych, V.M.Pirnak, V.A.Plujko, O.A.Ponkratenko, J.Choinski, B.Czech, R.Siudak, A.Szczurek, A.Stolarz, R.M.Zelinskyi

Elastic and inelastic scattering of 6Li + 18O versus 7Li + 18O and 6Li + 16O

NUCLEAR REACTIONS 6Li(18O, 18O), (18O, 18O'), E=114 MeV; measured E(particle), I(particle, θ) using ΔE-E Si telescopes; deduced σ(θ); calculated σ(θ), spectroscopic amplitudes of specified clusters using optical potential including one- and two-step transfers and parameters from CC analyses of nearby reactions. 6Li deduced deformation parameters. Compared to data and data of nearby reactions.

doi: 10.1016/j.nuclphysa.2013.10.013
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2014RU06      Nucl.Phys. A927, 209 (2014)

A.T.Rudchik, K.A.Chercas, K.W.Kemper, A.A.Rudchik, S.Kliczewski, E.I.Koshchy, K.Rusek, S.Yu.Mezhevych, O.A.Ponkratenko, Val.M.Pirnak, V.A.Plujko, J.Choinski, B.Czech, R.Siudak, A.Szczurek

6Li(18O, 17O)7Li reaction and comparison of 6, 7Li + 16, 17, 18O potentials

NUCLEAR REACTIONS 6Li(18O, 17O), (18O, 18O), (18O, 18O'), E=114 MeV; measured reaction products. 7Li, 17O deduced σ(Eout, θ); calculated σ(Eout, θ) using CC; deduced spectroscopic amplitudes for various clusters, potential parameters.

doi: 10.1016/j.nuclphysa.2014.04.018
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2014RU11      Eur.Phys.J. A 50, 159 (2014)

A.T.Rudchik, O.V.Herashchenko, K.W.Kemper, K.Rusek, A.A.Rudchik, E.I.Koshchy, S.Kliczewski, S.Yu.Mezhevych, A.V.Mokhnach, Val.M.Pirnak, O.A.Ponkratenko, V.A.Plujko, J.Choinski, R.Siudak, A.Stolarz, A.Szczurek, A.P.Ilyin, V.V.Uleshchenko

Elastic and inelastic scattering of 14N ions by 7Li at 80 MeV (c.m. 26.7 MeV)

NUCLEAR REACTIONS 7Li(14N, 14N), (14N, 14N'), E=80 MeV; measured reaction products; deduced σ, σ(θ), spectroscopic amplitudes, parameters of the nucleus-nucleus potentials. Optical model and the coupled-reaction-channels method using a channels-coupling scheme.

doi: 10.1140/epja/i2014-14159-9
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2014ST18      Phys.Rev. C 90, 034301 (2014)

S.R.Stroberg, A.Gade, J.A.Tostevin, V.M.Bader, T.Baugher, D.Bazin, J.S.Berryman, B.A.Brown, C.M.Campbell, K.W.Kemper, C.Langer, E.Lunderberg, A.Lemasson, S.Noji, F.Recchia, C.Walz, D.Weisshaar, S.J.Williams

Single-particle structure of silicon isotopes approaching 42Si

NUCLEAR REACTIONS 9Be(36Si, 35Si), (36Si, 35Al), E=97.7 MeV/nucleon; 9Be(38Si, 37Si), (38Si, 37Al), E=86 MeV/nucleon; 9Be(40Si, 39Si), (40Si, 39Al), E=79 MeV/nucleon, [secondary beams of 36,38,40Si produced in 9Be(48Ca, X), E=140 MeV/nucleon primary reaction]; measured Doppler-shifted γ-ray spectra, Eγ, Iγ, γγ-, (residue)γ-coin, (36Si)γ-coin using GRETINA array for γ detection and ionization chamber and plastic scintillators in the focal plane of S800 spectrograph at NSCL-MSU facility. 35,37,39Al, 35,37,39Si; deduced levels, J, π, parallel momentum distributions, l-values. 36,38,40Si; one-neutron and one-proton total and partial knockout σ, single-particle structure, and enhanced collectivity in the region of 42Si. Eikonal model analysis of parallel momentum distributions. Comparison with large-scale shell model calculations.

NUCLEAR STRUCTURE 35,37,39Al, 35,37,39Si; calculated levels, J, π using large-scale shell model with SDPF-U and SDPF-MU interactions. Comparison with experimental data.

doi: 10.1103/PhysRevC.90.034301
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2013KE06      Phys.Rev. C 88, 017602 (2013)

N.Keeley, K.W.Kemper, K.Rusek

Dynamic polarization potentials and dipole polarizabilities of 11Li, 6He and 6Li compared

NUCLEAR REACTIONS 208Pb(11Li, 11Li), E=29.8 MeV; 58Ni(11Li, 11Li), E=11.6 MeV; 208Pb(6Li, 6Li), E=29 MeV; 208Pb(6He, 6He), E=18 MeV; analyzed σ(θ) data by coupled discretized continuum channels (CDCC) calculations using FRESCO computer code; deduced dynamic polarization potentials (DPP), dipole polarizability factor α for 11Li. Dineutron model.

doi: 10.1103/PhysRevC.88.017602
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2013MI05      Phys.Rev. C 87, 054617 (2013)

J.P.Mitchell, G.V.Rogachev, E.D.Johnson, L.T.Baby, K.W.Kemper, A.M.Moro, P.Peplowski, A.S.Volya, I.Wiedenhover

Structure of 8B from elastic and inelastic 7Be+p scattering

NUCLEAR REACTIONS 1H(7Be, 7Be), (7Be, 7Be'), [secondary 7Be from 1H(7Li, 7Bi), E=9 MeV primary reaction], E=18.5, 22, 27.2 MeV; measured particle spectra, (7Be)p-coin, differential σ(E) at FSU accelerator facility. 8B; deduced levels, resonances, J, π, proton and total widths, spectroscopic factors, phase shifts. 7Be(p, p), (p, p'); analysis of excitation function by R-matrix method. 7Li(n, γ); calculated σ as function of excitation energy using TDCSM model. 7Li(n, n), (n, n'), E(cm)=0.1-1.4 MeV; analyzed σ by R-matrix theory. Comparison of σ and phase shifts with predictions of TDCSM model and ab initio no-core shell model coupled with the resonating group method (NCSM/RGM) calculations.

doi: 10.1103/PhysRevC.87.054617
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2013PO08      Nucl.Instrum.Methods Phys.Res. B 305, 16 (2013)

F.E.Portillo, J.A.Liendo, A.C.Gonzalez, D.D.Caussyn, N.R.Fletcher, O.A.Momotyuk, B.T.Roeder, I.Wiedenhoever, K.W.Kemper, P.Barber, L.Sajo-Bohus

Light element quantification by lithium elastic scattering

NUCLEAR REACTIONS 1H(6Li, 6Li), 7Li(6Li, 6Li), 7Li(16O, 16O), 12C(6Li, 6Li), 19F(6Li, 6Li), E=13-20 MeV; measured products, Eπ, Iπ; deduced σ(θ). Data were imported from EXFOR entry C2037.

doi: 10.1016/j.nimb.2013.04.049
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2013RU08      Eur.Phys.J. A 49, 74 (2013)

A.T.Rudchik, R.M.Zelinskyi, K.W.Kemper, K.A.Chercas, A.A.Rudchik, V.M.Pirnak, V.A.Plujko, O.A.Ponkratenko

Energy dependence of the 6Li + 16O elastic scattering versus that of 7Li + 16O

NUCLEAR REACTIONS 16O(6Li, 6Li), E=4.5, 5.8, 9, 13, 20, 22.8, 25.7, 29.8, 30, 36, 48, 50.6 MeV;16O(7Li, 7Li), E=50 MeV; calculated, analyzed σ(θ) using optical model and coupled reaction channels; deduced potential parameters. Calculations compared to data.

doi: 10.1140/epja/i2013-13074-y
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2012KE07      Phys.Rev. C 86, 014619 (2012)

N.Keeley, K.W.Kemper, K.Rusek

Bound state form factors from knockout in 10Be(d, t) neutron pickup

NUCLEAR REACTIONS 10Be(d, t)9Be, E=15 MeV; analyzed σ(θ) data using finite range DWBA, and coupled reaction channels (CRC) calculations using shell-model (SM), no-core shell model (NCSM), variational Monte Carlo (VMC) form factors, and continuum discretized coupled channels (CDCC) model for deuteron breakup. Discussed possible sources of ambiguity in the pickup calculations.

doi: 10.1103/PhysRevC.86.014619
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2012MO29      Phys.Lett. B 718, 441 (2012)

X.Mougeot, V.Lapoux, W.Mittig, N.Alamanos, F.Auger, B.Avez, D.Beaumel, Y.Blumenfeld, R.Dayras, A.Drouart, C.Force, L.Gaudefroy, A.Gillibert, J.Guillot, H.Iwasaki, T.Al Kalanee, N.Keeley, L.Nalpas, E.C.Pollacco, T.Roger, P.Roussel-Chomaz, D.Suzuki, K.W.Kemper, T.J.Mertzimekis, A.Pakou, K.Rusek, J.-A.Scarpaci, C.Simenel, I.Strojek, R.Wolski

New excited states in the halo nucleus 6He

NUCLEAR REACTIONS 1H(8He, t)6He, E=15.4 MeV/nucleon; measured reaction products, Et, It; deduced σ(θ), energy levels, J, π, resonances. Comparison with available data.

doi: 10.1016/j.physletb.2012.10.054
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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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2011GA15      Phys.Rev. C 83, 044305 (2011)

A.Gade, D.Bazin, B.A.Brown, C.M.Campbell, J.M.Cook, S.Ettenauer, T.Glasmacher, K.W.Kemper, S.McDaniel, A.Obertelli, T.Otsuka, A.Ratkiewicz, J.R.Terry, Y.Utsuno, D.Weisshaar

In-beam γ -ray spectroscopy of 35Mg and 33Na

NUCLEAR REACTIONS 9Be(38Si, X)33Na/35Mg/36Mg/38Si, E=83 MeV/nucleon, [secondary 38Si beam from 9Be(48Ca, X), E=140 MeV/nucleon primary reaction]; measured Eγ, production σ, (33Na)γ-, (35Mg)γ-coin using SeGA array. 33Na, 35Mg; deduced levels, J, π, rotational band in 33Na. Comparison with large-scale Monte-Carlo shell model (MCSM) calculations with SDPF-M interaction, and with large-scale shell-model calculations with SDPF-U interaction. Calculated composition of 35Mg wave functions, quadrupole moments and B(E2) values. Systematics of S(n) for A=30-35 Mg nuclei. Relevance to Island of Inversion.

doi: 10.1103/PhysRevC.83.044305
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2011RU01      Phys.Rev. C 83, 024606 (2011)

A.T.Rudchik, Yu.M.Stepanenko, K.W.Kemper, A.A.Rudchik, O.A.Ponkratenko, E.I.Koshchy, S.Kliczewski, K.Rusek, A.Budzanowski, S.Yu.Mezhevych, I.Skwirczynska, R.Siudak, B.Czech, A.Szczurek, J.Choinski, L.Glowacka

Comparison of the 7Li(18O, 17N)8Be and 18O(d, 3He)17N reactions

NUCLEAR REACTIONS 7Li(18O, 17N)8Be, E=114 MeV; measured 17N spectra by E-ΔE method, σ(θ) for transitions to ground state of 8Be and to ground and excited states of 17N. 18O(d, 3He), (d, d), E=52 MeV; analyzed σ(θ) data for elastic scattering and for transitions to the excited states in 17N; deduced optical potentials for 17N+8Be and 17N+3He systems. Optical model analysis with in the coupled-reaction channels (CRC) method and using spectroscopic amplitudes from shell model calculations.

doi: 10.1103/PhysRevC.83.024606
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2011RU04      Nucl.Phys. A852, 1 (2011)

A.T.Rudchik, Yu.O.Shyrma, K.W.Kemper, K.Rusek, E.I.Koshchy, S.Kliczewski, B.G.Novatsky, O.A.Ponkratenko, E.Piasecki, G.P.Romanyshyna, Yu.M.Stepanenko, I.Strojek, S.B.Sakuta, A.Budzanowski, L.Glowacka, I.Skwirczynska, R.Siudak, J.Choinski, A.Szczurek

Elastic and inelastic scattering of 13C + 18O versus 12C + 18O and 13C + 16O

NUCLEAR REACTIONS 13C(18O, 18O), (18O, 18O'), E=105 MeV; measured elastic and inelastic σ(θ); deduced potential parameters, scattering mechanism features. Optical model and coupled-reaction-channels analysis. Comparison with other data.

doi: 10.1016/j.nuclphysa.2011.01.004
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2011RU07      Eur.Phys.J. A 47, 50 (2011)

A.T.Rudchik, Yu.O.Shyrma, K.W.Kemper, K.Rusek, E.I.Koshchy, S.Kliczewski, B.G.Novatsky, O.A.Ponkratenko, E.Piasecki, G.P.Romanyshyna, Yu.M.Stepanenko, I.Strojek, S.B.Sakuta, A.Budzanowski, L.Glowacka, I.Skwirczynska, R.Siudak, J.Choinski, A.Szczurek

Elastic and inelastic scattering of 14C + 18O versus 12, 13C + 18O and 14C + 16O

NUCLEAR REACTIONS 12,13,14C(18O, X), (18O, 18O), (18O, 18O') E=105 MeV; 14C(16O, 16O), E=132, 281 MeV; measured reaction products; deduced σ, σ(θ), optical model parameters. Coupled-reaction-channels method.

doi: 10.1140/epja/i2011-11050-3
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2011RU08      Nucl.Phys. A860, 8 (2011)

A.T.Rudchik, Yu.M.Stepanenko, K.W.Kemper, A.A.Rudchik, O.A.Ponkratenko, E.I.Koshchy, S.Kliczewski, K.Rusek, A.Budzanowski, S.Yu.Mezhevych, Val.M.Pirnak, B.Czech, R.Siudak, I.Skwirczynska, A.Szczurek, J.Choinski, L.Glowacka

The 7Li(18O, 16N)9Be reaction and optical potential of 16N + 9Be versus 16O + 9Be

NUCLEAR REACTIONS 7Li(18O, 16N), E=114 MeV;9Be(16O, 16O), E=15-32.2 MeV;16O(9Be, 9Be), E=20-167.7 MeV; measured E(particle), I(particle, θ) for oxygen-induced reactions; calculated σ(θ) using coupled channels; deduced σ(θ), optical model parameters for input and output channels, spectroscopic amplitudes. Comparison with other optical model calculations and with data.

doi: 10.1016/j.nuclphysa.2011.05.003
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2011SA25      Phys.Rev. C 83, 061305 (2011)

D.Santiago-Gonzalez, I.Wiedenhover, V.Abramkina, M.L.Avila, T.Baugher, D.Bazin, B.A.Brown, P.D.Cottle, A.Gade, T.Glasmacher, K.W.Kemper, S.McDaniel, A.Rojas, A.Ratkiewicz, R.Meharchand, E.C.Simpson, J.A.Tostevin, A.Volya, D.Weisshaar

Triple configuration coexistence in 44S

NUCLEAR REACTIONS 9Be(46Ar, 2p), [46Ar secondary beam produced in Be(48Ca, X), E=140 MeV/nucleon primary reaction], E=99.9 MeV/nucleon; measured Eγ, Iγ, γγ-, (fragment)γ-coin using SeGA array, cross sections. 44S; deduced levels, J, π, longitudinal momentum distributions, and configurations. Two-proton knockout reaction. Comparison with shell-model calculations using the SDPF-U interaction.

doi: 10.1103/PhysRevC.83.061305
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2010JO08      J.Phys.:Conf.Ser. 205, 012011 (2010)

E.D.Johnson, G.V.Rogachev, V.Z.Goldberg, S.Brown, D.Robson, A.M.Crisp, P.D.Cottle, C.Fu, J.Giles, B.W.Green, K.W.Kemper, K.Lee, B.T.Roeder, R.E.Tribble

Clustering in N ≠ Z nuclei

NUCLEAR REACTIONS 4He(14C, 14C), E=25 MeV; measured resonance elastic scattering, Eα, Iα(θ); deduced σ, σ(θ); calculated σ, σ(θ) using R-matrix; deduced resonance parameters, α-widths, n-widths. 4He(14C, 18O), E≈1-100 keV; calculated, analyzed reaction data using DWBA σ and Coulomb modified ANC; deduced reaction rates, asymptotic normalization coefficients, influence of cluster resonant and nonresonant capture.

doi: 10.1088/1742-6596/205/1/012011
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2010KE10      Phys.Rev. C 82, 034606 (2010)

N.Keeley, N.Alamanos, K.W.Kemper, K.Rusek

Strong nuclear couplings as a source of Coulomb rainbow suppression

NUCLEAR REACTIONS 64Zn(11Be, 11Be), E(cm)=15.35, 18.77, 24.5 MeV; analyzed quasielastic scattering σ(θ) using Coulomb and nuclear couplings, effect of Coupling to the 64Zn(11Be, 10Be) single-neutron stripping channel. Continuum discretized coupled-channels (CDCC) calculations.

doi: 10.1103/PhysRevC.82.034606
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2010MI12      Phys.Rev. C 82, 011601 (2010)

J.P.Mitchell, G.V.Rogachev, E.D.Johnson, L.T.Baby, K.W.Kemper, A.M.Moro, P.N.Peplowski, A.Volya, I.Wiedenhover

Low-lying states in 8B

NUCLEAR REACTIONS 1H(7Be, 7Be), (7Be, 7Be'), E=18.5, 22.0 MeV, [secondary 7Be beam from primary 1H(7Li, 7Be) reaction]; measured recoil proton and 7Be spectra, (proton)(7Be)-coin, excitation functions and angular distributions. 8B; deduced levels, J, π, partial proton widths and total widths. R-matrix and time-dependent continuum shell model (TDCSM) analysis. Comparison with low-lying level structure of mirror nucleus 8Li.

doi: 10.1103/PhysRevC.82.011601
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2010RE05      Phys.Rev. C 81, 067303 (2010)

R.R.Reynolds, P.D.Cottle, A.Gade, D.Bazin, C.M.Campbell, J.M.Cook, T.Glasmacher, P.G.Hansen, T.Hoagland, K.W.Kemper, W.F.Mueller, B.T.Roeder, J.R.Terry, J.A.Tostevin

25Si and 29S studied via single neutron knockout reactions

NUCLEAR REACTIONS 9Be(26Si, 25Si), E=109 MeV/nucleon; 9Be(30S, 29S), E=103 MeV/nucleon, [secondary beams of 26Si and 30S from primary 9Be(36Ar, X), E=150 MeV/nucleon]; measured Eγ, Iγ, (particle)γ-coin, σ using SeGA array. 25Si, 29S; deduced levels, J, π. Comparisons with previous experimental data, mirror nuclei 25Na and 29Al, and shell model calculations.

doi: 10.1103/PhysRevC.81.067303
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2010RU03      Eur.Phys.J. A 44, 221 (2010)

A.T.Rudchik, Yu.O.Shyrma, K.W.Kemper, K.Rusek, E.I.Koshchy, S.Kliczewski, B.G.Novatsky, O.A.Ponkratenko, E.Piasecki, G.P.Romanyshyna, Yu.M.Stepanenko, I.Strojek, S.B.Sakuta, A.Budzanowski, L.Glowacka, I.Skwirczynska, R.Siudak, J.Choinski, A.Szczurek

Isotopic effects in elastic and inelastic 12C + 16, 18O scattering

NUCLEAR REACTIONS 12C(18O, X), E=105 MeV; measured reaction products; deduced σ(θ), potential scattering, large-momentum transfer, energy dependence.

NUCLEAR REACTIONS 12C(18O, X), E=105 MeV; 12C(16O, X), E=24-230 MeV; calculated transitions to the excited states using the rotational and vibrational models. Optical model and coupled-reaction channels methods.

doi: 10.1140/epja/i2010-10953-7
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2009JO07      Phys.Rev. C 80, 045805 (2009)

E.D.Johnson, G.V.Rogachev, J.Mitchell, L.Miller, K.W.Kemper

14C(α, γ) reaction rate

NUCLEAR REACTIONS 6Li(14C, d), E=8.8 MeV; 7Li(14C, t), E=11.5 MeV; measured Ed, Id, Et, It, σ, σ(θ). 18O; deduced levels, J, π. 14C(α, γ)18O; deduced astrophysical S factors, reaction rates, and asymptotic normalization coefficients (ANCs).

doi: 10.1103/PhysRevC.80.045805
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