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NSR database version of April 11, 2024.

Search: Author = W.A.Peters

Found 62 matches.

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2022KI05      Phys.Rev. C 105, 025801 (2022)

C.H.Kim, K.Y.Chae, S.Ahn, D.W.Bardayan, K.A.Chipps, J.A.Cizewski, M.E.Howard, R.L.Kozub, M.S.Kwag, K.Kwak, B.Manning, M.Matos, P.D.O'Malley, S.D.Pain, W.A.Peters, S.T.Pittman, A.Ratkiewicz, M.S.Smith, S.Strauss

Proton branching ratios of 23Mg levels

NUCLEAR REACTIONS 24Mg(p, d), E=31 MeV; measured Ep, Ip, deuteron spectra, (deuteron)p-coin; deduced proton branchings from excited states in 23Mg to the levels of 22Na. Discussed the impact of measured proton branchings on the estimation of 22Na(p, γ) reaction rate. A large-area silicon detector array (SIDAR) at HRIBF.

doi: 10.1103/PhysRevC.105.025801
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Data from this article have been entered in the XUNDL database. For more information, click here.


2021BA34      Phys.Rev. C 104, 024308 (2021)

J.C.Batchelder, C.Apgar, N.T.Brewer, C.J.Gross, R.K.Grzywacz, S.Ilyushkin, M.Madurga, K.Miernik, S.W.Padgett, S.V.Paulauskas, W.A.Peters, B.C.Rasco, K.P.Rykaczewski, D.W.Stracener, J.A.Winger, M.Wolinska-Cichocka, E.F.Zganjar, D.W.Bardayan, M.E.Howard, B.Manning, M.Matos, A.J.Mendez, D.Miller, A.Ratkiewicz, E.H.Wang

Levels in 125Cd populated by the β decay of 125mAg and 125Ag

RADIOACTIVITY 125,125mAg(β-), (β-n)[from 238U(p, F), E=50 MeV from the ORIC cyclotron at the HRIBF-ORNL facility, followed by mass separation of fission fragments by a high resolution magnet]; 124Cd(β-)[from 125Cd β-n decay]; measured Eγ, Iγ, βγ- and γγ-coin, half-lives of decays of the g.s. and isomer of 125Ag, %β-n or Pn using two HPGe clover detectors for γ rays, two plastic scintillators for β particles, and 48 plastic scintillators for the detection of neutrons. 125Cd, 124In; deduced levels, J, π, multipolarity, β feedings, logft. Comparison with previously reported results.

doi: 10.1103/PhysRevC.104.024308
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Data from this article have been entered in the XUNDL database. For more information, click here.


2021KI05      Phys.Rev. C 104, 014323 (2021)

M.J.Kim, K.Y.Chae, S.Ahn, D.W.Bardayan, S.M.Cha, K.A.Chipps, J.A.Cizewski, M.E.Howard, R.L.Kozub, K.Kwak, B.Manning, M.Matos, P.D.O'Malley, S.D.Pain, W.A.Peters, S.T.Pittman, A.Ratkiewicz, M.S.Smith, S.Strauss

First measurement of proton decay from a transfer reaction to 21Na

NUCLEAR REACTIONS 24Mg(p, α)21Na*, E=31 MeV; analyzed Eα, Iα, light charged particles, particle identification plot, α(protons from the decay of excited stated in 21Na)-coin, a follow-up analysis of previously reported experiment in 2017Ch34 using silicon detector array SIDAR at HRIBF-ORNL facility. 21Na; deduced levels, proton branching ratios from decay of levels in 21Na to the ground and first excited states of 20Ne assuming isotropic decays. 21Mg(β+), (β+p); compared previously known experimental delayed proton branches from levels in 21Na populated in β+ decay of 21Mg with those from the transfer reaction in the present analysis.

doi: 10.1103/PhysRevC.104.014323
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2020FE06      Phys.Rev.Lett. 125, 062501 (2020)

M.Febbraro, R.J.deBoer, S.D.Pain, R.Toomey, F.D.Becchetti, A.Boeltzig, Y.Chen, K.A.Chipps, M.Couder, K.L.Jones, E.Lamere, Q.Liu, S.Lyons, K.T.Macon, L.Morales, W.A.Peters, D.Robertson, B.C.Rasco, K.Smith, C.Seymour, G.Seymour, M.S.Smith, E.Stech, B.Vande Kolk, M.Wiescher

New 13C(α, n)16O Cross Section with Implications for Neutrino Mixing and Geoneutrino Measurements

NUCLEAR REACTIONS 13C(α, n), E=5.2-6.4 MeV; measured reaction products, Eγ, Iγ; deduced σ. Comparison with experimental data, JENDL and ENDF/B evaluated libraries.

doi: 10.1103/PhysRevLett.125.062501
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2579.


2020KW01      Eur.Phys.J. A 56, 108 (2020)

M.S.Kwag, K.Y.Chae, S.Ahn, D.W.Bardayan, K.A.Chipps, J.A.Cizewski, M.E.Howard, R.L.Kozub, K.Kwak, B.Manning, M.Matos, P.D.O'Malley, S.D.Pain, W.A.Peters, S.T.Pittman, A.Ratkiewicz, M.S.Smith, S.Strauss

Spin assignments for 23Mg levels and the astrophysical 22Na(p, γ)23Mg reaction

NUCLEAR REACTIONS 24Mg(p, d), E=31 MeV; measured reaction products. 23Mg, 22Na; deduced σ(θ), excitation energies and J, π for levels, resonance parameters and astrophysical reaction rates for 22Na+p. Comparison with available data, DWBA calculations. Large-area SIlicon Detector ARray (SIDAR). The Holifield Radioactive Ion Beam Facility (HRIBF) at Oak Ridge National Laboratory (ORNL).

doi: 10.1140/epja/s10050-020-00106-y
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2020LI08      Phys.Rev. C 101, 025808 (2020)

Q.Liu, M.Febbraro, R.J.deBoer, S.Aguilar, A.Boeltzig, Y.Chen, M.Couder, J.Gorres, E.Lamere, S.Lyons, K.T.Macon, K.Manukyan, L.Morales, S.Pain, W.A.Peters, C.Seymour, G.Seymour, R.Toomey, B.Vande Kolk, J.Weaver, M.Wiescher

Low-energy cross-section measurement of the 10B(α, n)13N reaction and its impact on neutron production in first-generation stars

NUCLEAR REACTIONS 10B(α, n)13N, E=575-2522 keV; measured E(n), I(n), n(θ), σ(E, θ), differential S factors using deuterated liquid scintillator detector for neutrons at the University of Notre Dame Nuclear Science Laboratory. 10B(α, pγ)13C, E=835-1665 keV; measured Eγ and Iγ. 14N; deduced levels, resonances, J, π, Γα, Γn, Γp, Γd, and Γ from R-matrix analysis, and compared with earlier experimental results. 10B(α, n), (α, p), (α, d), (α, α), E(cm)=0.4-1.2 MeV; analyzed present and previous experimental data for differential σ(E) by R-matrix fit. 10B(α, n)13N, T=0.1-10 GK; deduced astrophysical reaction rates, and compared to literature data.

doi: 10.1103/PhysRevC.101.025808
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2511. Data from this article have been entered in the XUNDL database. For more information, click here.


2019AH05      Phys.Rev. C 100, 044613 (2019)

S.Ahn, D.W.Bardayan, K.L.Jones, A.S.Adekola, G.Arbanas, J.C.Blackmon, K.Y.Chae, K.A.Chipps, J.A.Cizewski, S.Hardy, M.E.Howard, R.L.Kozub, B.Manning, M.Matos, C.D.Nesaraja, P.D.O'Malley, S.D.Pain, W.A.Peters, S.T.Pittman, B.C.Rasco, M.S.Smith, I.Spassova

Direct neutron capture cross section on 80Ge and probing shape coexistence in neutron-rich nuclei

NUCLEAR REACTIONS 2H(80Ge, p), (80Ge, d), E=310 MeV; measured energies and angles of light-ion ejectiles, Ep, Ip, E(d), I(d), (80Ge)p- and (80Ge)d-coin, angular distributions of ejected proton using various silicon detectors at the Holifield Radioactive Ion Beam Facility at ORNL. Proton angular distributions analyzed using adiabatic wave approximation including finite range effects (ADWAFR) using FRESCO code, and by DWBA. 81Ge; deduced levels, J, π, spectroscopic factors, configurations, region of shape coexistence around N≈50. Systematics of low-lying levels in N=49 isotones 81Ge, 83Se, 85Kr and 87Sr. Discussed implications for the magic nature of 78Ni. 80Ge(n, γ), E=0.01-3 MeV; calculated σ(E) for r-process simulations using direct-semidirect (DSD) model and the CUPIDO code.

doi: 10.1103/PhysRevC.100.044613
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2441. Data from this article have been entered in the XUNDL database. For more information, click here.


2019LI42      Phys.Rev. C 100, 034601 (2019)

Q.Liu, M.Febbraro, R.J.deBoer, A.Boeltzig, Y.Chen, C.Cerjan, M.Couder, B.Frentz, J.Gorres, E.A.Henry, E.Lamere, K.T.Macon, K.V.Manukyan, L.Morales, P.D.O'Malley, S.D.Pain, W.A.Peters, D.Schneider, C.Seymour, G.Seymour, E.Temanson, R.Toomey, B.Vande Kolk, J.Weaver, M.Wiescher

Measurement of the 10Ba (α, n0) 13N cross section for 2.2 < Eα < 4.9 MeV and its application as a diagnostic at the National Ignition Facility

NUCLEAR REACTIONS 10B(α, n), (α, n0)13N, E=2.2-4.9 MeV; measured En, In using five deuterated liquid scintillation detectors at the University of Notre Dame Nuclear Science Laboratory; deduced differential σ(E), angular distribution coefficients, thick target yields. Comparison with previous experimental data. Preliminary calculations performed to test feasibility of this reaction as a diagnostic tool for the National Ignition Facility (NIF) implosion. 10B(α, p)13C, E=2.2-4.9 MeV; measured secondary Eγ, γ-ray yields, used for troubleshooting during the experiment.

doi: 10.1103/PhysRevC.100.034601
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2408.


2019MA26      Phys.Rev. C 99, 041302 (2019); Erratum Phys.Rev. C 99, 069901 (2019)

B.Manning, G.Arbanas, J.A.Cizewski, R.L.Kozub, S.Ahn, J.M.Allmond, D.W.Bardayan, K.Y.Chae, K.A.Chipps, M.E.Howard, K.L.Jones, J.F.Liang, M.Matos, C.D.Nesaraja, F.M.Nunes, P.D.O'Malley, S.D.Pain, W.A.Peters, S.T.Pittman, A.Ratkiewicz, K.T.Schmitt, D.Shapira, M.S.Smith, L.Titus

Informing direct neutron capture on tin isotopes near the N=82 shell closure

NUCLEAR REACTIONS 2H(124Sn, p), (126Sn, p), (128Sn, p), E=630 MeV; measured Ep, Ip, (recoils)p-coin, Q-value spectra, differential σ(θ) using Super Oak Ridge Rutgers University Barrel Array (SuperORRUBA) for light charged particle detection and ionization chamber for detection of beam intensity and recoils at Oak Ridge National Laboratory. 125,127,129Sn; deduced levels, Jπ, L-transfers, spectroscopic factors. 2H(130Sn, p), (132Sn, p); reanalyzed previous experimental data. Angular distribution data compared with Finite Range Adiabatic Wave Approximation. 124,126,128,130,132Sn(n, γ), E=30 keV; calculated direct-semidirect σ(n, γ) from spectroscopic information, and compared with various theoretical predictions. Relevance to r-process abundance calculations.

doi: 10.1103/PhysRevC.99.041302
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset14557. Data from this article have been entered in the XUNDL database. For more information, click here.


2019RA04      Phys.Rev.Lett. 122, 052502 (2019)

A.Ratkiewicz, J.A.Cizewski, J.E.Escher, G.Potel, J.T.Burke, R.J.Casperson, M.McCleskey, R.A.E.Austin, S.Burcher, R.O.Hughes, B.Manning, S.D.Pain, W.A.Peters, S.Rice, T.J.Ross, N.D.Scielzo, C.Shand, K.Smith

Towards Neutron Capture on Exotic Nuclei: Demonstrating (d, pγ) as a Surrogate Reaction for (n, γ)

NUCLEAR REACTIONS 95Mo(d, p), E=12.4 MeV; measured reaction products, Eγ, Iγ; deduced σ. Comparison with theoretical calculations.

doi: 10.1103/PhysRevLett.122.052502
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Data from this article have been entered in the XUNDL database. For more information, click here.


2018JO04      Acta Phys.Pol. B49, 365 (2018)

K.L.Jones, C.Thornsberry, J.Allen, A.Atencio, D.W.Bardayan, D.Blankstein, S.Burcher, A.B.Carter, K.A.Chipps, J.A.Cizewski, I.Cox, Z.Elledge, M.Febbraro, A.Fijalkowska, R.Grzywacz, M.R.Hall, T.T.King, A.Lepailleur, M.Madurga, S.T.Marley, P.D.O'Malley, S.V.Paulauskas, S.D.Pain, W.A.Peters, C.Reingold, K.Smith, S.Taylor, W.Tan, M.Vostinar, D.Walter

Development of the (d, n) Proton-transfer Reaction in Inverse Kinematics for Structure Studies

doi: 10.5506/aphyspolb.49.365
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2018OR03      Phys.Lett. B 785, 615 (2018)

R.Orlandi, S.D.Pain, S.Ahn, A.Jungclaus, K.T.Schmitt, D.W.Bardayan, W.N.Catford, R.Chapman, K.A.Chipps, J.A.Cizewski, C.G.Gross, M.E.Howard, K.L.Jones, R.L.Kozub, B.Manning, M.Matos, K.Nishio, P.D.O'Malley, W.A.Peters, S.T.Pittman, A.Ratkiewicz, C.Shand, J.F.Smith, M.S.Smith, T.Fukui, J.A.Tostevin, Y.Utsuno

Neutron-hole states in 131Sn and spin-orbit splitting in neutron-rich nuclei

NUCLEAR STRUCTURE 131,132,133Sn; analyzed available data; deduced spectroscopic factors, a significant reduction of the energy splitting of the weakly bound 3p orbits compared to the well-bound 2d orbits; calculated energy splitting using a one-body spin-orbit interaction and a Woods–Saxon potential of standard radius and diffuseness.

NUCLEAR REACTIONS 2H(132Sn, t)131Sn, E ∼ 4.4 MeV/nucleon; measured reaction products; deduced σ(θ), orbital angular momentum, energy levels, J, π.

doi: 10.1016/j.physletb.2018.08.005
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2383. Data from this article have been entered in the XUNDL database. For more information, click here.


2017BA42      Phys.Rev. C 96, 055806 (2017)

D.W.Bardayan, K.A.Chipps, S.Ahn, J.C.Blackmon, S.Carmichael, U.Greife, K.L.Jones, J.Jose, A.Kontos, R.L.Kozub, L.Linhardt, B.Manning, M.Matos, P.D.O'Malley, S.Ota, S.D.Pain, W.A.Peters, S.T.Pittman, A.Sachs, K.T.Schmitt, M.S.Smith, P.Thompson

Spectroscopic study of 20Ne+p reactions using the JENSA gas-jet target to constrain the astrophysical 18F (p, α)15O rate

NUCLEAR REACTIONS 20Ne(p, d), (p, 3He), E=30 MeV; measured E(d), I(d), 3He spectrum, particle identification spectrum, σ(θ) using SIDAR silicon detector array, and JENSA natural Ne gas target at Holifield Radioactive Ion Beam Facility (HRIBF). DWBA analysis using optical model parameters. 19Ne, 18F; deduced levels, and compared with previous experimental results. 18F(p, α)15O; deduced coefficients to parametrize the astrophysical reaction rates.

doi: 10.1103/PhysRevC.96.055806
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2282. Data from this article have been entered in the XUNDL database. For more information, click here.


2017CH22      Phys.Rev. C 95, 045808 (2017)

K.A.Chipps, S.D.Pain, R.L.Kozub, D.W.Bardayan, J.A.Cizewski, K.Y.Chae, J.F.Liang, C.Matei, B.H.Moazen, C.D.Nesaraja, P.D.O'Malley, W.A.Peters, S.T.Pittman, K.T.Schmitt, M.S.Smith

First spin-parity constraint of the 306 keV resonance in 35Cl for nova nucleosynthesis

NUCLEAR REACTIONS 37Cl(p, t), E=30 MeV; measured E(t), I(t), σ(θ) using silicon detector array SIDAR, natural Cl and enriched 37Cl targets HRIBF-ORNL. DWBA analysis of σ(θ) data. 35Cl; deduced level, resonance within the Gamow window, l-transfer and Jπ for 6677-keV level (306-keV proton resonance). Relevance to reaction rate for 34S(p, γ)35Cl in astrophysical applications.

doi: 10.1103/PhysRevC.95.045808
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Data from this article have been entered in the XUNDL database. For more information, click here.


2017CH34      Phys.Rev. C 96, 025810 (2017)

S.M.Cha, K.Y.Chae, S.Ahn, D.W.Bardayan, K.A.Chipps, J.A.Cizewski, M.E.Howard, R.L.Kozub, K.Kwak, B.Manning, M.Matos, P.D.O'Malley, S.D.Pain, W.A.Peters, S.T.Pittman, A.Ratkiewicz, M.S.Smith, S.Strauss

Spectroscopic study of the radionuclide 21Na for the astrophysical 17F (α, p) 20Ne reaction rate

NUCLEAR REACTIONS 24Mg(p, α)21Na, E=31 MeV; measured particle spectra, Eα, Iα, σ(θ) using annular silicon strip detector array at the ORNL Holifield Radioactive Ion Beam Facility. 21Na; deduced levels, proton resonances, J, π, L-transfers by DWBA analysis, Γα and resonance strengths of proton resonances. Comparison with previous experimental data as in the Nuclear Data Sheets. 17F(α, p)20Ne, T=0.1-1.1 GK; deduced astrophysical reaction rates, and compared with previous values, and with REACLIB compilation.

doi: 10.1103/PhysRevC.96.025810
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2590. Data from this article have been entered in the XUNDL database. For more information, click here.


2017MI06      Phys.Lett. B 769, 339 (2017)

K.Miki, R.G.T.Zegers, Sam M.Austin, D.Bazin, B.A.Brown, A.C.Dombos, R.K.Grzywacz, M.N.Harakeh, E.Kwan, S.N.Liddick, S.Lipschutz, E.Litvinova, M.Madurga, M.T.Mustonen, W.J.Ong, S.V.Paulauskas, G.Perdikakis, J.Pereira, W.A.Peters, C.Robin, M.Scott, A.Spyrou, C.Sullivan, R.Titus

Isovector excitations in 100Nb and their decays by neutron emission studied via the 100Mo(t, 3He + n) reaction at 115 MeV/ u

NUCLEAR REACTIONS 100Mo(t, 3He), E=115 MeV/nucleon; measured reaction products; deduced σ(θ, E), Gamow-Teller transition strength. Comparison with the single-particle estimate and spherical pn-(R)QRPA and pn-RQTBA calculations.

doi: 10.1016/j.physletb.2017.04.004
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2266.


2017PE13      Phys.Rev. C 96, 029801 (2017)

W.A.Peters

Comment on "Cross section of the 13 (α, n) 16O reaction: A background for the measurement of geo-neutrinos"

NUCLEAR REACTIONS 13C(α, n)16O, E=0.8-8.0 MeV; analyzed σ(E) measured in the work of 2005Ha69; deduced uncertainty in the cross section of about 50% above 5 MeV, due to changes in neutron detector efficiency due to different neutron energies that are possible above the 16O first excited-state, and which were not adequately accounted for in 2005Ha69 who used a moderated neutron detector. Relevance to s-process nucleosynthesis.

doi: 10.1103/PhysRevC.96.029801
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2016MA50      Phys.Rev.Lett. 117, 092502 (2016)

M.Madurga, S.V.Paulauskas, R.Grzywacz, D.Miller, D.W.Bardayan, J.C.Batchelder, N.T.Brewer, J.A.Cizewski, A.Fijalkowska, C.J.Gross, M.E.Howard, S.V.Ilyushkin, B.Manning, M.Matos, A.J.Mendez, II, K.Miernik, S.W.Padgett, W.A.Peters, B.C.Rasco, A.Ratkiewicz, K.P.Rykaczewski, D.W.Stracener, E.H.Wang, M.Wolinska-Cichocka, E.F.Zganjar

Evidence for Gamow-Teller Decay of 78Ni Core from Beta-Delayed Neutron Emission Studies

RADIOACTIVITY 83,84Ga(β-), (β-n) [from 238U(p, X), E not given]; measured decay products, En, In, Eγ, Iγ. 78Ni; deduced β-decay strength, strong multineutron emission probabilities, β-decay lifetimes. Shell model calculations, neutron time-of-flight technique.

doi: 10.1103/PhysRevLett.117.092502
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Data from this article have been entered in the XUNDL database. For more information, click here.


2015BA51      Phys.Lett. B 751, 311 (2015)

D.W.Bardayan, K.A.Chipps, S.Ahn, J.C.Blackmon, R.J.deBoer, U.Greife, K.L.Jones, A.Kontos, R.L.Kozub, L.Linhardt, B.Manning, M.Matos, P.D.O'Malley, S.Ota, S.D.Pain, W.A.Peters, S.T.Pittman, A.Sachs, K.T.Schmitt, M.S.Smith, P.Thompson

The first science result with the JENSA gas-jet target: Confirmation and study of a strong subthreshold 18F(p, α)15O resonance

NUCLEAR REACTIONS 20Ne(p, d), E=30 MeV; measured reaction products; deduced deuteron σ(θ), excitation energies, resonance J. Distorted-wave Born approximation (DWBA) calculations using the computer code TWOFNR7.

NUCLEAR REACTIONS 18F(p, α), E(cm)<1 MeV; calculated astrophysical reaction rate, S-factor with the R-matrix code AZURE2.

doi: 10.1016/j.physletb.2015.10.073
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2202. Data from this article have been entered in the XUNDL database. For more information, click here.


2015CH66      J.Korean Phys.Soc. 67, 1435 (2015)

S.M.Cha, K.Y.Chae, A.Kim, E.J.Lee, S.Ahn, D.W.Bardayan, K.A.Chipps, J.A.Cizewski, M.E.Howard, B.Manning, P.D.O'Malley, A.Ratkiewicz, S.Strauss, R.L.Kozub, M.Matos, S.D.Pain, S.T.Pittman, M.S.Smith, W.A.Peters

24Mg(p, α)21Na reaction study for spectroscopy of 21Na

NUCLEAR REACTIONS 24Mg(p, α), E=31 MeV; measured reaction products, Eα, Iα; deduced α-particles yields, σ(θ), new energy level in 21Na. Comparison with theoretical calculations.

doi: 10.3938/jkps.67.1435
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2590.


2015KU04      Phys.Rev. C 91, 017304 (2015)

A.N.Kuchera, A.Spyrou, J.K.Smith, T.Baumann, G.Christian, P.A.DeYoung, J.E.Finck, N.Frank, M.D.Jones, Z.Kohley, S.Mosby, W.A.Peters, M.Thoennessen

Search for unbound 15Be states in the 3n+ 12Be channel

NUCLEAR REACTIONS 9Be(17C, 15Be), E=55 MeV/nucleon, [17C secondary beam from 9Be(22Ne, X) primary reaction]; measured particle spectra, (12Be)n-coin using MONA array at NSCL-MSU facility; reconstructed two-, three-, and four-body decay energies of the 12Be+ neutron system using invariant mass spectroscopy. 15Be; search for predicted unbound 3/2+ level proved inconclusive. In the best fit analysis, 15Be g.s. is unbound with respect to 12Be.

doi: 10.1103/PhysRevC.91.017304
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Data from this article have been entered in the XUNDL database. For more information, click here.


2015PA23      Phys.Rev.Lett. 114, 212501 (2015)

S.D.Pain, D.W.Bardayan, J.C.Blackmon, S.M.Brown, K.Y.Chae, K.A.Chipps, J.A.Cizewski, K.L.Jones, R.L.Kozub, J.F.Liang, C.Matei, M.Matos, B.H.Moazen, C.D.Nesaraja, J.Okolowicz, P.D.O'Malley, W.A.Peters, S.T.Pittman, M.Ploszajczak, K.T.Schmitt, J.F.Shriner, Jr., D.Shapira, M.S.Smith, D.W.Stracener, G.L.Wilson

Constraint of the Astrophysical 26gAl(p, γ)27Si Destruction Rate at Stellar Temperatures

NUCLEAR REACTIONS 2H(26Al, p), E=117 MeV; measured reaction products, Ep, Ip; deduced σ(θ), spectroscopic factors, astrophysical reaction rates.

doi: 10.1103/PhysRevLett.114.212501
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2167. Data from this article have been entered in the XUNDL database. For more information, click here.


2014AL07      Phys.Rev.Lett. 112, 172701 (2014)

J.M.Allmond, E.S.Stuchbery, J.R.Beene, A.Galindo-Uribarri, J.F.Liang, E.Padilla-Rodal, D.C.Radford, R.L.Varner, A.Ayres, J.C.Batchelder, A.Bey, C.R.Bingham, M.E.Howard, K.L.Jones, B.Manning, P.E.Mueller, C.D.Nesaraja, S.D.Pain, W.A.Peters, A.Ratkiewicz, K.T.Schmitt, D.Shapira, M.S.Smith, N.J.Stone, D.W.Stracener, C.-H.Yu

Double-Magic Nature of 132Sn and 208Pb through Lifetime and Cross-Section Measurements

NUCLEAR REACTIONS 9Be(132Sn, 8Be), (208Pb, 8Be), E=3 MeV/nucleon; measured reaction products, Eγ, Iγ, γ-γ-coin.; deduced energy levels, J, π, σ, level T1/2, B(M1), spectroscopic factors. Comparison with available data, DWBA calculations.

doi: 10.1103/PhysRevLett.112.172701
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2014AL14      Phys.Rev. C 90, 014322 (2014)

J.M.Allmond, A.E.Stuchbery, B.A.Brown, J.R.Beene, A.Galindo-Uribarri, C.J.Gross, J.F.Liang, E.Padilla-Rodal, D.C.Radford, R.L.Varner, A.Ayres, J.C.Batchelder, A.Bey, C.R.Bingham, M.E.Howard, K.L.Jones, B.Manning, P.E.Mueller, C.D.Nesaraja, S.D.Pain, W.A.Peters, A.Ratkiewicz, K.T.Schmitt, D.Shapira, M.S.Smith, N.J.Stone, D.W.Stracener, C.-H.Yu

2π1ν states populated in 135Te from 9Be-induced reactions with a 132Sn beam

NUCLEAR REACTIONS 9Be(132Sn, nα), (132Sn, 2nα), (132Sn, 3nα), E=3 MeV/nucleon; measured Eγ, Iγ, (particle)γ-coin using HyBall and CLARION arrays at HRIBF-ORNL facility. 134,135,136Te; deduced levels, J, π. 135Te; deduced σ, spectroscopic factors, DWBA calculations, configurations. Comparison with shell model calculations for 134,135,136Te.

NUCLEAR STRUCTURE 134,135,136Te; calculated levels, J, π, wavefunctions, spectroscopic factors using shell model. Comparison with experimental data.

doi: 10.1103/PhysRevC.90.014322
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2014SA46      Phys.Lett. B 736, 137 (2014)

A.Sanetullaev, M.B.Tsang, W.G.Lynch, Jenny Lee, D.Bazin, K.P.Chan, D.Coupland, V.Henzl, D.Henzlova, M.Kilburn, A.M.Rogers, Z.Y.Sun, M.Youngs, R.J.Charity, L.G.Sobotka, M.Famiano, S.Hudan, D.Shapira, W.A.Peters, C.Barbieri, M.Hjorth-Jensen, M.Horoi, T.Otsuka, T.Suzuki, Y.Utsuno

Neutron spectroscopic factors of 55Ni hole-states from image transfer reactions

NUCLEAR REACTIONS 1H(56Ni, d), E=37 MeV/nucleon; measured reaction products; deduced spectroscopic factors, J, π, σ(θ). Comparison with shell model calculations.

doi: 10.1016/j.physletb.2014.07.003
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2013IZ01      Phys.Rev. C 88, 065808 (2013)

R.Izsak, A.Horvath, A.Kiss, Z.Seres, A.Galonsky, C.A.Bertulani, Zs.Fulop, T.Baumann, D.Bazin, K.Ieki, C.Bordeanu, N.Carlin, M.Csanad, F.Deak, P.DeYoung, N.Frank, T.Fukuchi, A.Gade, D.Galaviz, C.R.Hoffman, W.A.Peters, H.Schelin, M.Thoennessen, G.I.Veres

Determining the 7Li(n, γ) cross section via Coulomb dissociation of 8Li

NUCLEAR REACTIONS C, Pb(8Li, n), [8Li secondary beam from 9Be(18O, X), E=120 MeV/nucleon primary reaction], E=69.5 MeV/nucleon; 8Li(γ, n)7Li, [γ from 8Li beam impinging on C and Pb targets], E(8Li)=69.5 MeV/nucleon; measured TOF, position and angle of 8Li particles, neutron spectra from Coulomb dissociation of 8Li, E(n), I(n) using MONA neutron detector array at NSCL-MSU cyclotron facility; reconstructed neutron 7Li energy spectra and momentum vectors; deduced σ(E) for 7Li(n, γ)8Li reaction. Surrogate method. Comparison of σ with previous experimental results, and with low-energy effective field theory calculations.

doi: 10.1103/PhysRevC.88.065808
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2013KO03      Phys.Rev. C 87, 011304 (2013)

Z.Kohley, E.Lunderberg, P.A.DeYoung, A.Volya, T.Baumann, D.Bazin, G.Christian, N.L.Cooper, N.Frank, A.Gade, C.Hall, J.Hinnefeld, B.Luther, S.Mosby, W.A.Peters, J.K.Smith, J.Snyder, A.Spyrou, M.Thoennessen

First observation of the 13Li ground state

NUCLEAR REACTIONS 9Be(14Be, 13Li), [14Be secondary beam from 9Be(18O, X), E=120 MeV/nucleon primary beam], E=53.6 MeV/nucleon; measured 11Li fragment and neutron spectra, three-body (11Li+n+n), and two-body (11Li+n) decay energy spectra using Modular Neutron Array (MONA) for neutrons at NSCL facility. Monte Carlo and GEANT4 simulations. Glauber reaction model. 12,13Li; deduced levels, ground state resonance energies. Strong dineutron character for 13Li g.s. Comparison with previous studies.

doi: 10.1103/PhysRevC.87.011304
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2013SC25      Phys.Rev. C 88, 064612 (2013)

K.T.Schmitt, K.L.Jones, S.Ahn, D.W.Bardayan, A.Bey, J.C.Blackmon, S.M.Brown, K.Y.Chae, K.A.Chipps, J.A.Cizewski, K.I.Hahn, J.J.Kolata, R.L.Kozub, J.F.Liang, C.Matei, M.Matos, D.Matyas, B.Moazen, C.D.Nesaraja, F.M.Nunes, P.D.O'Malley, S.D.Pain, W.A.Peters, S.T.Pittman, A.Roberts, D.Shapira, J.F.Shriner, M.S.Smith, I.Spassova, D.W.Stracener, N.J.Upadhyay, A.N.Villano, G.L.Wilson

Reactions of a 10Be beam on proton and deuteron targets

NUCLEAR REACTIONS 2H(10Be, p), (10Be, d), 1H(10Be, p), E=60, 75, 90, 107 MeV; measured Ep, Ip, E(d), I(d), elastic and inelastic σ(θ, E) using SIDAR, ORRUBA, and SuperORRUBA arrays of particle detectors at HRIBF-ORNL facility. 11Be; deduced levels, and spectroscopic factors for halo nucleus. Finite-range adiabatic wave approximation (FR-ADWA) analysis.

doi: 10.1103/PhysRevC.88.064612
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2013TH04      Acta Phys.Pol. B44, 543 (2013)

M.Thoennessen, Z.Kohley, A.Spyrou, E.Lunderberg, P.A.DeYoung, H.Attanayake, T.Baumann, D.Bazin, B.A.Brown, G.Christian, D.Divaratne, S.M.Grimes, A.Haagsma, J.E.Finck, N.Frank, B.Luther, S.Mosby, T.Nagi, G.F.Peaslee, W.A.Peters, A.Schiller, J.K.Smith, J.Snyder, M.Strongman, A.Volya

Observation of Ground-state Two-neutron Decay

RADIOACTIVITY 16Be, 26O(2n); measured decay products, En, In; deduced decay energy spectra. Comparison with calculated two-neutron separation energies, T1/2, widths.

doi: 10.5506/APhysPolB.44.543
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2012CH31      Phys.Rev. C 86, 014329 (2012)

K.A.Chipps, D.W.Bardayan, K.Y.Chae, J.A.Cizewski, R.L.Kozub, C.Matei, B.H.Moazen, C.D.Nesaraja, P.D.O'Malley, S.D.Pain, W.A.Peters, S.T.Pittman, K.T.Schmitt, M.S.Smith

28Si(p, 3He) reaction for spectroscopy of 26Al

NUCLEAR REACTIONS 28Si(p, 3He)26Al, E=25 MeV; measured 3He and proton spectra, p(3He)-coin, proton decay branching ratios, differential σ(θ) using SIDAR array at HRIBF facility. 26Al; deduced levels, L-transfers, proton branching ratios. DWBA analysis of σ(θ) data.

doi: 10.1103/PhysRevC.86.014329
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2012PE11      Phys.Rev. C 86, 019802 (2012)

W.A.Peters, T.Baumann, B.A.Brown, J.Brown, P.A.DeYoung, J.E.Finck, N.Frank, K.L.Jones, J.-L.Lecouey, B.Luther, G.F.Peaslee, W.F.Rogers, M.Thoennessen, J.A.Tostevin

Reply to "Comment on 'Neutron knockout of 12Be populating neutron-unbound states in 11Be'"

NUCLEAR STRUCTURE 11Be; reanalyzed decay energy curves, level, J, π, branching ratios for 9Be(12Be, n)11Be experiment in 2011Pe13, and in reply to 2012Fo21 comment.

doi: 10.1103/PhysRevC.86.019802
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2012PI11      Phys.Rev. C 85, 065804 (2012)

S.T.Pittman, D.W.Bardayan, K.Y.Chae, K.A.Chipps, K.L.Jones, R.L.Kozub, C.Matei, M.Matos, B.H.Moazen, C.D.Nesaraja, P.D.O'Malley, S.D.Pain, P.D.Parker, W.A.Peters, J.F.Shriner, M.S.Smith

26Al+p elastic and inelastic scattering reactions and galactic abundances of 26Al

NUCLEAR REACTIONS 26Al(p, p), (p, p'), E(cm)=0.5-1.5 MeV; measured Ep, Ip using SIDAR array at HRIBF, excitation functions, σ(θ), resonances. 27Si; deduced level, resonance, J, π, width. 26Al(p, γ)27Si; deduced reaction rates with new resonance included. Destruction of 26Al in astrophysical environments.

doi: 10.1103/PhysRevC.85.065804
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2012SC08      Phys.Rev.Lett. 108, 192701 (2012)

K.T.Schmitt, K.L.Jones, A.Bey, S.H.Ahn, D.W.Bardayan, J.C.Blackmon, S.M.Brown, K.Y.Chae, K.A.Chipps, J.A.Cizewski, K.I.Hahn, J.J.Kolata, R.L.Kozub, J.F.Liang, C.Matei, M.Matos, D.Matyas, B.Moazen, C.Nesaraja, F.M.Nunes, P.D.O'Malley, S.D.Pain, W.A.Peters, S.T.Pittman, A.Roberts, D.Shapira, J.F.Shriner, Jr., M.S.Smith, I.Spassova, D.W.Stracener, A.N.Villano, G.L.Wilson

Halo Nucleus 11Be: A Spectroscopic Study via Neutron Transfer

NUCLEAR REACTIONS 2H(10Be, p)11Be, E=60, 75, 90, 107 MeV; measured reaction products, light ejectiles, Ep, Ip; deduced σ(θ), spectroscopic factors for the first excited and halo neutron states. Comparison with available data.

doi: 10.1103/PhysRevLett.108.192701
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2012SP01      Phys.Rev.Lett. 108, 102501 (2012)

A.Spyrou, Z.Kohley, T.Baumann, D.Bazin, B.A.Brown, G.Christian, P.A.DeYoung, J.E.Finck, N.Frank, E.Lunderberg, S.Mosby, W.A.Peters, A.Schiller, J.K.Smith, J.Snyder, M.J.Strongman, M.Thoennessen, A.Volya

First Observation of Ground State Dineutron Decay: 16Be

RADIOACTIVITY 16Be(2n) [from Be(17B, p), E=53 MeV/nucleon]; measured decay products, En, In; deduced two-neutron separation energy.

doi: 10.1103/PhysRevLett.108.102501
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2011CH56      Phys.Rev. C 84, 059801 (2011)

K.A.Chipps, D.W.Bardayan, K.Y.Chae, J.A.Cizewski, R.L.Kozub, J.F.Liang, C.Matei, P.D.O'Malley, S.D.Pain, W.A.Peters, S.T.Pittman, M.S.Smith

Comment on "Properties of 26Mg and 26Si in the sd shell model and the determination of the 25Al(p, γ)26Si reaction rate"

NUCLEAR REACTIONS 25Al(p, γ)26Si; analyzed and discussed reaction rates for revised level and resonance energy.

doi: 10.1103/PhysRevC.84.059801
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2011FR13      Phys.Rev. C 84, 037302 (2011)

N.Frank, D.Albertson, J.Bailey, T.Baumann, D.Bazin, B.A.Brown, J.Brown, P.A.DeYoung, J.E.Finck, A.Gade, J.Hinnefeld, R.Howes, M.Kasperczyk, B.Luther, W.A.Peters, A.Schiller, A.Smith, M.Thoennessen, J.A.Tostevin

Neutron-unbound states in 25, 26F

NUCLEAR REACTIONS 9Be(26Ne, 25F), (26Ne, 26F), E=86 MeV/nucleon; measured E(n), I(n) at NSCL. 25,26F; deduced levels, J, π, widths, resonances. 25F; calculated levels, J, π using shell-model.

doi: 10.1103/PhysRevC.84.037302
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2011HO05      Phys.Rev. C 83, 031303 (2011)

C.R.Hoffman, T.Baumann, J.Brown, P.A.DeYoung, J.E.Finck, N.Frank, J.D.Hinnefeld, S.Mosby, W.A.Peters, W.F.Rogers, A.Schiller, J.Snyder, A.Spyrou, S.L.Tabor, M.Thoennessen

Observation of a two-neutron cascade from a resonance in 24O

NUCLEAR REACTIONS 9Be(26F, nn), E=85 MeV/nucleon; measured neutron spectra using MoNA array, neutron resonance decay energy, neutron-neutron-fragment, neutron-fragment energies, TOF, 22O-nn coin. 24O; deduced level, two-neutron cascade from the resonance in 24O to 22O. 22,23O; deduced levels. Comparison with shell-model calculations.

doi: 10.1103/PhysRevC.83.031303
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2011LE01      Phys.Rev. C 83, 014606 (2011)

J.Lee, M.B.Tsang, D.Bazin, D.Coupland, V.Henzl, D.Henzlova, M.Kilburn, W.G.Lynch, A.M.Rogers, A.Sanetullaev, Z.Y.Sun, M.Youngs, R.J.Charity, L.G.Sobotka, M.Famiano, S.Hudan, D.Shapira, P.O'Malley, W.A.Peters, K.Y.Chae, K.Schmitt

Neutron spectroscopic factors of 34Ar and 46Ar from (p, d) transfer reactions

NUCLEAR REACTIONS 1H(34Ar, d), (36Ar, d), (46Ar, d), E=33 MeV/nucleon, [34,46Ar secondary beams from 9Be(36Ar, X), E=150 MeV/nucleon and 9Be(48Ca, X), E=140 MeV/nucleon primary reactions]; measured Ed, Id, σ(θ); 34,36,46Ar; deduced neutron ground-state spectroscopic factors. Comparison with shell model calculations.

doi: 10.1103/PhysRevC.83.014606
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2011MO12      Eur.Phys.J. A 47, 66 (2011)

B.H.Moazen, C.Matei, D.W.Bardayan, J.C.Blackmon, K.Y.Chae, K.A.Chipps, R.Hatarik, K.L.Jones, R.L.Kozub, M.Matos, C.D.Nesaraja, P.D.O'Malley, S.D.Pain, T.Pelham, W.A.Peters, S.T.Pittman, J.F.Shriner, Jr, M.S.Smith

Direct studies of low-energy resonances in 31P(p, α)28Si and 35Cl(p, α)32S

NUCLEAR REACTIONS 31P, 35Cl(p, α), (p, γ), E=low; measured E(particle), I(particle), Eα, Iα(t, θ); deduced resonance energies, strengths.

doi: 10.1140/epja/i2011-11066-7
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2011OM01      Phys.Rev. C 84, 042801 (2011)

P.D.O'Malley, D.W.Bardayan, A.S.Adekola, S.Ahn, K.Y.Chae, J.A.Cizewski, S.Graves, M.E.Howard, K.L.Jones, R.L.Kozub, L.Lindhardt, M.Matos, B.M.Moazen, C.D.Nesaraja, S.D.Pain, W.A.Peters, S.T.Pittman, K.T.Schmitt, J.F.Shriner, Jr., M.S.Smith, I.Spassova, S.Y.Strauss, J.L.Wheeler

Search for a resonant enhancement of the 7Be + d reaction and primordial 7Li abundances

NUCLEAR REACTIONS 2H(7Be, d), E=10 MeV; measured E(d), I(d), energy loss, differential cross section; search for 5/2+ resonance in 7Be+d system proved negative, R-matrix analysis, deduced upper limit for resonance width. Relevance to cosmological 7Li abundance.

doi: 10.1103/PhysRevC.84.042801
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2011PE13      Phys.Rev. C 83, 057304 (2011)

W.A.Peters, T.Baumann, B.A.Brown, J.Brown, P.A.DeYoung, J.E.Finck, N.Frank, K.L.Jones, J.-L.Lecouey, B.Luther, G.F.Peaslee, W.F.Rogers, A.Schiller, M.Thoennessen, J.A.Tostevin, K.Yoneda

Neutron knockout of 12Be populating neutron-unbound states in 11Be

NUCLEAR REACTIONS 9Be(12Be, n), E=90 MeV/nucleon, [12Be secondary beam from 9Be(18O, X), E=120 MeV/nucleon primary reaction]; measured E(n), I(n) by TOF using MONA array, n(10Be) coin. 11Be; deduced levels, J, π, resonances, σ, spectroscopic factor. 10Be; deduced levels from neutron decay of unbound resonances. Comparison with shell model calculations.

doi: 10.1103/PhysRevC.83.057304
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2011SP01      Phys.Rev. C 84, 044309 (2011)

A.Spyrou, J.K.Smith, T.Baumann, B.A.Brown, J.Brown, G.Christian, P.A.DeYoung, N.Frank, S.Mosby, W.A.Peters, A.Schiller, M.J.Strongman, M.Thoennessen, J.A.Tostevin

Search for the 15Be ground state

NUCLEAR REACTIONS 9Be(17C, 2p), E=55 MeV/nucleon, [17C secondary beam from 9Be(22Ne, X) primary reaction]; measured energy loss, time of flight, magnetic rigidity, Be fragment spectra and (Be)(n)-coin. 15Be; deduced g.s., J, π, decay mode, unbound energy. Comparison with shell model calculations.

doi: 10.1103/PhysRevC.84.044309
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2010BA21      Phys.Rev. C 81, 065802 (2010)

D.W.Bardayan, J.C.Blackmon, K.Y.Chae, M.E.Howard, C.Matei, W.Martin, M.Matos, B.H.Moazen, C.D.Nesaraja, W.A.Peters, S.T.Pittman, M.S.Smith, I.Spassova

Inelastic 17F(p, p)17F scattering at Ec.m.=3 MeV and the 14O(α, p)17F reaction rate

NUCLEAR REACTIONS 1H(17F, X), E=52-58 MeV; measured Q-value spectra

doi: 10.1103/PhysRevC.81.065802
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2010CH44      Phys.Rev. C 82, 045803 (2010)

K.A.Chipps, D.W.Bardayan, K.Y.Chae, J.A.Cizewski, R.L.Kozub, J.F.Liang, C.Matei, B.H.Moazen, C.D.Nesaraja, P.D.O'Malley, S.D.Pain, W.A.Peters, S.T.Pittman, K.T.Schmitt, M.S.Smith

The 28Si(p, t)26Si*(p) reaction and implications for the astrophysical 25Al(p, γ)26Si reaction rate

NUCLEAR REACTIONS 28Si(p, t), E=40 MeV; measured Et, It, Ep, Ip, tp-coin, σ(θ). 26Si; deduced levels, J, π, resonances, l-transfers, and proton decay branching ratios. DWBA analysis. Astrophysical relevance to the reaction rates for 25Al(p, γ).

doi: 10.1103/PhysRevC.82.045803
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2010HA04      Phys.Rev. C 81, 021302 (2010)

C.C.Hall, E.M.Lunderberg, P.A.DeYoung, T.Baumann, D.Bazin, G.Blanchon, A.Bonaccorso, B.A.Brown, J.Brown, G.Christian, D.H.Denby, J.Finck, N.Frank, A.Gade, J.Hinnefeld, C.R.Hoffman, B.Luther, S.Mosby, W.A.Peters, A.Spyrou, M.Thoennessen

First observation of excited states in 12Li

NUCLEAR REACTIONS Be(14B, 2p), E=53.4 MeV/nucleon; measured neutron and 11Li spectra from decay of 12Li, and (11Li)n-coin using Modular Neutron Array (MONA). 12Li; deduced levels, J, π. Comparisons with shell model calculations using WBP interaction.

doi: 10.1103/PhysRevC.81.021302
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2010LE03      Phys.Rev.Lett. 104, 112701 (2010)

J.Lee, M.B.Tsang, D.Bazin, D.Coupland, V.Henzl, D.Henzlova, M.Kilburn, W.G.Lynch, A.M.Rogers, A.Sanetullaev, A.Signoracci, Z.Y.Sun, M.Youngs, K.Y.Chae, R.J.Charity, H.K.Cheung, M.Famiano, S.Hudan, P.O'Malley, W.A.Peters, K.Schmitt, D.Shapira, L.G.Sobotka

Neutron-Proton Asymmetry Dependence of Spectroscopic Factors in Ar Isotopes

NUCLEAR REACTIONS 1H(34Ar, d), (36Ar, d), (46Ar, d), E=33 MeV/nucleon; measured Eδ, Iδ; 34,36,46Ar; deduced neutron ground state spectroscopic factors. Comparison with shell model calculations.

doi: 10.1103/PhysRevLett.104.112701
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2010SP02      Phys.Lett. B 683, 129 (2010)

A.Spyrou, T.Baumann, D.Bazin, G.Blanchon, A.Bonaccorso, E.Breitbach, J.Brown, G.Christian, A.DeLine, P.A.DeYoung, J.E.Finck, N.Frank, S.Mosby, W.A.Peters, A.Russel, A.Schiller, M.J.Strongman, M.Thoennessen

First evidence for a virtual 18B ground state

NUCLEAR REACTIONS Be(19C, pX)18B, E=62 MeV/nucleon; Be(17C, pX)16B, E=55 MeV/nucleon; measured decay energy spectra, (fragment)(neutron)-coin using time of flight technique with Modular Neutron Array (MoNA). 16B; deduced ground state energies. 17B; deduced level energies, J, π. 18B; calculated level energies, J, π. Comparison with shell model calculations using WBP interaction and other data. Secondary radioactive beam.

doi: 10.1016/j.physletb.2009.12.016
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2009BA59      Eur.Phys.J. A 42, 457 (2009)

D.W.Bardayan, K.A.Chipps, R.P.Fitzgerald, J.C.Blackmon, K.Y.Chae, A.E.Champagne, U.Greife, R.Hatarik, R.L.Kozub, C.Matei, B.H.Moazen, C.D.Nesaraja, S.D.Pain, W.A.Peters, S.T.Pittman, J.F.Shriner, M.S.Smith

Direct measurements of (p, γ) cross-sections at astrophysical energies using radioactive beams and the Daresbury Recoil Separator

NUCLEAR REACTIONS 1H(7Be, γ), (17F, γ), (24Mg, γ), E=12 MeV;7Be, 17F, 24Mg; measured reaction products; deduced yields, σ for (p, γ) reactions.

doi: 10.1140/epja/i2008-10737-8
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2009CH17      Phys.Rev.Lett. 102, 152502 (2009)

K.A.Chipps, D.W.Bardayan, J.C.Blackmon, K.Y.Chae, U.Greife, R.Hatarik, R.L.Kozub, C.Matei, B.H.Moazen, C.D.Nesaraja, S.D.Pain, W.A.Peters, S.T.Pittman, J.F.Shriner, Jr., M.S.Smith

First Direct Measurement of the 17F(p, γ)18Ne Cross Section

NUCLEAR REACTIONS 1H(17F, γ), E < 14.3 MeV; measured recoil spectra, cross sections. 17F(p, γ); deduced resonance strengths and reaction rates.

doi: 10.1103/PhysRevLett.102.152502
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2009CH64      Phys.Rev. C 80, 065810 (2009)

K.A.Chipps, D.W.Bardayan, C.D.Nesaraja, M.S.Smith, J.C.Blackmon, K.Y.Chae, B.H.Moazen, S.T.Pittman, U.Greife, R.Hatarik, W.A.Peters, R.L.Kozub, J.F.Shriner, Jr., C.Matei, S.D.Pain

The 17F(p, γ)18Ne resonant cross section

NUCLEAR REACTIONS 1H(17F, γ)18Ne, E=14.3 MeV; 1H(17O, γ)18F, E=18.65 MeV; 20Ne(17O, 20Ne), E=18.65 MeV; measured recoils, σ at HRIBF facility; deduced widths of resonances, abundances of 17,18F and 17O in novae and x-ray bursts, and reaction rates for 17F(π, γ)18Ne reaction; discussed astrophysical implications.

doi: 10.1103/PhysRevC.80.065810
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2009HO01      Phys.Lett. B 672, 17 (2009)

C.R.Hoffman, T.Baumann, D.Bazin, J.Brown, G.Christian, D.H.Denby, P.A.DeYoung, J.E.Finck, N.Frank, J.Hinnefeld, S.Mosby, W.A.Peters, W.F.Rogers, A.Schiller, A.Spyrou, M.J.Scott, S.L.Tabor, M.Thoennessen, P.Voss

Evidence for a doubly magic 24O

NUCLEAR REACTIONS Be(26F, n23O), E=85 MeV/nucleon; measured neutron decay energy spectra, (fragment)(neutron)-coin. 24O deduced excited state energies, J, π. Comparison with other data and systematics. Secondary radioactive beam.

doi: 10.1016/j.physletb.2008.12.066
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2009ST20      Phys.Rev. C 80, 021302 (2009)

M.J.Strongman, A.Spyrou, C.R.Hoffman, T.Baumann, D.Bazin, J.Brown, P.A.DeYoung, J.E.Finck, N.Frank, S.Mosby, W.F.Rogers, G.F.Peaslee, W.A.Peters, A.Schiller, S.L.Tabor, M.Thoennessen

Disappearance of the N = 14 shell

NUCLEAR REACTIONS Be(26F, X)22N, E=85 MeV/nucleon; measured En and (fragment)(neutron)-coin spectrum. 22N; deduced levels, J, π. Level systematics of N=14, 15 C, N and O isotones. Comparison with shell-model calculations using WBTM and WBPM interactions.

doi: 10.1103/PhysRevC.80.021302
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2008BA45      Phys.Rev. C 78, 052801 (2008)

D.W.Bardayan, P.D.O'Malley, J.C.Blackmon, K.Y.Chae, K.A.Chipps, J.A.Cizewski, R.Hatarik, K.L.Jones, R.L.Kozub, C.Matei, B.H.Moazen, C.D.Nesaraja, S.D.Pain, S.Paulauskas, W.A.Peters, S.T.Pittman, K.T.Schmitt, J.F.Shriner, Jr., M.S.Smith

Spectroscopic study of low-lying 16N levels

NUCLEAR REACTIONS 2H(15N, p), E=100 MeV; measured particle spectra, σ(θ), spectroscopic factors. 16N; deduced levels, J, π. 15N(n, γ); deduced reaction rate. Comparison with Distorted-Wave Born approximation.

doi: 10.1103/PhysRevC.78.052801
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2008CH07      Nucl.Phys. A801, 101 (2008)

G.Christian, W.A.Peters, D.Absalon, D.Albertson, T.Baumann, D.Bazin, E.Breitbach, J.Brown, P.L.Cole, D.Denby, P.A.DeYoung, J.E.Finck, N.Frank, A.Fritsch, C.Hall, A.M.Hayes, J.Hinnefeld, C.R.Hoffman, R.Howes, B.Luther, E.Mosby, S.Mosby, D.Padilla, P.V.Pancella, G.Peaslee, W.F.Rogers, A.Schiller, M.J.Strongman, M.Thoennessen, L.O.Wagner

Production of nuclei in neutron unbound states via primary fragmentation of 48Ca

NUCLEAR REACTIONS 9Be(48Ca, X)10Li/11,13Be/23O, E=60 MeV/nucleon; measured neutron decay energy spectra, (fragment)(neutron)-coin using sequential neutron decay spectroscopy technique. 10Li, 11,13Be, 23O observed unbound states.

doi: 10.1016/j.nuclphysa.2008.01.004
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2008DE29      Phys.Rev. C 78, 044303 (2008)

D.H.Denby, P.A.DeYoung, T.Baumann, D.Bazin, E.Breitbach, J.Brown, N.Frank, A.Gade, C.C.Hall, J.Hinnefeld, C.R.Hoffman, R.Howes, R.A.Jenson, B.Luther, S.M.Mosby, C.W.Olson, W.A.Peters, A.Schiller, A.Spyrou, M.Thoennessen

Ground state energy and width of 7He from 8Li proton knockout

NUCLEAR REACTIONS Be(8Li, X), E=41 MeV/nucleon; measured particle spectra, angular distributions. Deduced energy of ground-state resonances. 7He; deduced ground-state energies and widths.

doi: 10.1103/PhysRevC.78.044303
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2008FR10      Nucl.Phys. A813, 199 (2008)

N.Frank, T.Baumann, D.Bazin, B.A.Brown, J.Brown, P.A.DeYoung, J.E.Finck, A.Gade, J.Hinnefeld, R.Howes, J.-L.Lecouey, B.Luther, W.A.Peters, H.Scheit, A.Schiller, M.Thoennessen, J.Tostevin

Neutron decay spectroscopy of neutron-rich oxygen isotopes

NUCLEAR REACTIONS 9Be(26Ne, X)22O/23O/24O, E=86 MeV/nucleon; measured fragment and neutron spectra, (fragment)n-coin, decay energy spectra; deduced reaction mechanism features. 22,23,24O deduced levels, J, π, strength functions, configurations. 23O observed unbound state.

doi: 10.1016/j.nuclphysa.2008.09.009
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2008HO03      Phys.Rev.Lett. 100, 152502 (2008)

C.R.Hoffman, T.Baumann, D.Bazin, J.Brown, G.Christian, P.A.DeYoung, J.E.Finck, N.Frank, J.Hinnefeld, R.Howes, P.Mears, E.Mosby, S.Mosby, J.Reith, B.Rizzo, W.F.Rogers, G.Peaslee, W.A.Peters, A.Schiller, M.J.Scott, S.L.Tabor, M.Thoennessen, P.J.Voss, T.Williams

Determination of the N = 16 Shell Closure at the Oxygen Drip Line

NUCLEAR REACTIONS Be(26F, 25O), E=85 MeV/nucleon; measured fragment, neutron energies and yields. 25O; deduced decay width.

doi: 10.1103/PhysRevLett.100.152502
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2007SC32      Phys.Rev.Lett. 99, 112501 (2007)

A.Schiller, N.Frank, T.Baumann, D.Bazin, B.A.Brown, J.Brown, P.A.DeYoung, J.E.Finck, A.Gade, J.Hinnefeld, R.Howes, J.-L.Lecouey, B.Luther, W.A.Peters, H.Scheit, M.Thoennessen, J.A.Tostevin

Selective Population and Neutron Decay of an Excited State of 23O

NUCLEAR REACTIONS Be(26Ne, n2p), E=86 MeV/nucleon; measured neutron decay energy spectrum, fragment-neutron-coinc. 23O deduced level energy, spectroscopic factor.

doi: 10.1103/PhysRevLett.99.112501
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2006HO14      Eur.Phys.J. A 27, Supplement 1, 217 (2006)

A.Horvath, K.Ieki, A.Kiss, A.Galonsky, M.Thoennessen, T.Baumann, D.Bazin, C.A.Bertulani, C.Bordeanu, N.Carlin, M.Csanad, F.Deak, P.DeYoung, N.Frank, T.Fukuchi, Zs.Fulop, A.Gade, D.Galaviz, C.Hoffman, R.Izsak, W.A.Peters, H.Schelin, A.Schiller, R.Sugo, Z.Seres, G.I.Veres

Can the neutron-capture cross sections be measured with Coulomb dissociation?

NUCLEAR REACTIONS C, Pb(8Li, n7Li), E=41 MeV/nucleon; measured particle spectra, angular distributions; deduced nuclear and Coulomb contributions.

doi: 10.1140/epja/i2006-08-033-6
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2004FR33      Nucl.Phys. A746, 551c (2004)

N.Frank, T.Baumann, D.Bazin, R.R.C.Clement, M.W.Cooper, P.Heckman, W.A.Peters, A.Stolz, M.Thoennessen, M.S.Wallace

Half-life limit of 19Mg

NUCLEAR REACTIONS Be(36Ar, X), E=150 MeV/nucleon; measured fragments isotopic yields; deduced no evidence for 19Mg. 19Mg deduced T1/2 upper limit.

doi: 10.1016/j.nuclphysa.2004.09.088
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2003FR31      Phys.Rev. C 68, 054309 (2003)

N.Frank, T.Baumann, D.Bazin, R.R.C.Clement, M.W.Cooper, P.Heckman, W.A.Peters, A.Stolz, M.Thoennessen, M.S.Wallace

Half-life limit of 19Mg

NUCLEAR REACTIONS Be(36Ar, X), E=150 MeV/nucleon; measured fragment isotopic yields; deduced no evidence for 19Mg. 19Mg deduced T1/2 upper limit.

doi: 10.1103/PhysRevC.68.054309
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2003PE23      Phys.Rev. C 68, 034607 (2003)

W.A.Peters, T.Baumann, D.Bazin, B.A.Brown, R.R.C.Clement, N.Frank, P.Heckman, B.A.Luther, F.Nunes, J.Seitz, A.Stolz, M.Thoennessen, E.Tryggestad

First two energy levels in 15F

NUCLEAR REACTIONS 1H(14O, p), E < 8 MeV; measured recoil proton spectra. 15F deduced ground and excited states energies. Elastic resonance scattering.

doi: 10.1103/PhysRevC.68.034607
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