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NSR database version of May 20, 2024.

Search: Author = J.Finck

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2022KU08      Phys.Rev. C 105, 034314 (2022)

A.N.Kuchera, D.Bazin, T.Phan, J.A.Tostevin, M.Babo, T.Baumann, P.C.Bender, M.Bowry, J.Bradt, J.Brown, P.A.DeYoung, B.Elman, J.E.Finck, A.Gade, G.F.Grinyer, M.D.Jones, B.Longfellow, E.Lunderberg, T.H.Redpath, W.F.Rogers, K.Stiefel, M.Thoennessen, D.Votaw, D.Weisshaar, K.Whitmore, R.B.Wiringa

Mirror nucleon removal reactions in p-shell nuclei

NUCLEAR REACTIONS 9Be(7Li, 6He), (7Li, 6Li), (9Li, 8Li), (10Be, 9Li) E=80 MeV/nucleon; measured reaction products, Eγ, Iγ; deduced partial σ to the individual final states of the daughter nuclei. Comparison to fully microscopic variational Monte Carlo (VMC) model calculations. Systematics of partial σ for nucleon removal reactions in mirror pairs. CAESAR array of 170 CsI(Te) scintillators. Secondaries beam produced in 9Be(16O, X), E=150 MeV/nucleon reaction and delivered to the target via A1900 fragment separator (NSCL-MSU).

doi: 10.1103/PhysRevC.105.034314
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2021CH47      Phys.Rev. C 104, 034313 (2021)

D.Chrisman, A.N.Kuchera, T.Baumann, A.Blake, B.A.Brown, J.Brown, C.Cochran, P.A.DeYoung, J.E.Finck, N.Frank, P.Gueye, H.Karrick, H.Liu, J.McDonaugh, T.Mix, B.Monteagudo, T.H.Redpath, W.F.Rogers, R.Seaton-Todd, A.Spyrou, K.Stiefel, M.Thoennessen, J.A.Tostevin, D.Votaw

Neutron-unbound states in 31Ne

NUCLEAR REACTIONS 9Be(33Mg, X)31Ne, E=89 MeV/nucleon; measured reaction fragments and neutrons detected by the MoNa-LISA-Sweeper array at NSCL-MSU cyclotron facility; reconstructed decay energy for 30Ne+n from invariant mass spectroscopy. 31Ne; deduced levels, neutron-unbound states from the two-body decay-energy spectrum. Comparison with shell-model calculations using FSU interaction within the NUSHELLX code, combined with two-proton knockout cross-section calculations using the eikonal reaction theory. Relevance to 31Ne being a prime example of a halo nucleus in the island of inversion.

doi: 10.1103/PhysRevC.104.034313
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2020VO08      Phys.Rev. C 102, 014325 (2020)

D.Votaw, P.A.DeYoung, T.Baumann, A.Blake, J.Boone, J.Brown, D.Chrisman, J.E.Finck, N.Frank, J.Gombas, P.Gueye, J.Hinnefeld, H.Karrick, A.N.Kuchera, H.Liu, B.Luther, F.Ndayisabye, M.Neal, J.Owens-Fryar, J.Pereira, C.Persch, T.Phan, T.Redpath, W.F.Rogers, S.Stephenson, K.Stiefel, C.Sword, A.Wantz, M.Thoennessen

Low-lying level structure of the neutron-unbound N=7 isotones

NUCLEAR REACTIONS 9Be(11Be, 8He), (11Be, 9Li), E=44 MeV/nucleon; 9Be(12B, 8He), (12B, 9Li), E=45 MeV/nucleon, [secondary 11Be and 12B beams from 9Be(16O, X), E=120 MeV/nucleon, followed by separation of ions of interest using A1900 Fragment Separator at the Coupled Cyclotron Facility of NSCL-MSU]; measured E(n), I(n), charged-particles, (particle)n-coin using the MoNA-LISA detector array for neutron detection and cathode readout drift chambers (CRDCs) for charged particles; deduced decay energy spectra of 9He and 10Li and neutron-unbound states. 9He, 10Li; deduced levels, resonances, widths, J, π, l-values of neutrons from the resonances in 9He and 10Li. Comparison with previous experimental results.

doi: 10.1103/PhysRevC.102.014325
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2017JO06      Phys.Rev. C 95, 044323 (2017), Erratum Phys.Rev. C 96, 059902 (2017)

M.D.Jones, T.Baumann, J.Brett, J.Bullaro, P.A.DeYoung, J.E.Finck, N.Frank, K.Hammerton, J.Hinnefeld, Z.Kohley, A.N.Kuchera, J.Pereira, A.Rabeh, J.K.Smith, A.Spyrou, S.L.Stephenson, K.Stiefel, M.Tuttle-Timm, R.G.T.Zegers, M.Thoennessen

Neutron-unbound excited states of 23N

NUCLEAR REACTIONS 2H(24O, p)23N, E=83.4 MeV/nucleon, [secondary 24O beam from 9Be(48Ca, X), E=140 MeV/nucleon primary reaction at NSCL-MSU accelerator facility]; measured reaction products and identified via ΔE vs. time-of-flight measurement, neutron spectra from the decay of 23N excited states using MONA and LISA arrays of plastic scintillators; analyzed two-body decay energy spectrum for 22N+1n. 23N; deduced levels above S(n), J, π, S(n), S(2n), configurations; calculated levels, J, π using shell-model and several interactions.

doi: 10.1103/PhysRevC.95.044323
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2017JO12      Phys.Rev. C 96, 054322 (2017)

M.D.Jones, K.Fossez, T.Baumann, P.A.DeYoung, J.E.Finck, N.Frank, A.N.Kuchera, N.Michel, W.Nazarewicz, J.Rotureau, J.K.Smith, S.L.Stephenson, K.Stiefel, M.Thoennessen, R.G.T.Zegers

Search for excited states in 25O

NUCLEAR REACTIONS 2H(24O, 25O), E=83.4 MeV/nucleon, [secondary 24O beam from 9Be(48Ca, X) primary reaction using A1900 fragment separator at NSCL-MSU facility]; measured 24O particles by a position and energy sensitive charged particle detector and separated based on energy loss and time-of-flight, and neutrons from 25O decay by the MoNA-LISA detector array. 25O; deduced two-body (24O+n) decay energy spectrum by invariant-mass spectroscopy technique, neutron-unbound ground state, L-transfer, asymptotic normalization coefficients, cross section and width of a possible 1/2+ resonance above the ground state. Comparisons with previous experimental results, and with theoretical calculations using complex-energy Gamow Shell Model (GSM) and Density Matrix Renormalization Group (DMRG) method with a finite-range two-body interaction.

NUCLEAR STRUCTURE 23,24,25,26,27,28O; calculated levels, J, π using complex-energy Gamow Shell Model (GSM) and Density Matrix Renormalization Group (DMRG) method with a finite-range two-body interaction. Comparison with experimental data.

doi: 10.1103/PhysRevC.96.054322
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2015JO05      Phys.Rev. C 91, 044312 (2015)

M.D.Jones, Z.Kohley, T.Baumann, G.Christian, P.A.DeYoung, J.E.Finck, N.Frank, R.A.Haring-Kaye, A.N.Kuchera, B.Luther, S.Mosby, J.K.Smith, J.Snyder, A.Spyrou, S.L.Stephenson, M.Thoennessen

Further insights into the reaction 14Be(CH2, X)10He

NUCLEAR REACTIONS 2H(14Be, 10He), (14Be, 12He), E=59 MeV/nucleon, [14Be secondary beam from 9Be(18O, X), E=120 MeV/nucleon primary reaction using A1900 fragment separator]; measured particle spectra by ΔE-E detectors and neutron spectra by MONA array at NSCL-MSU facility; analyzed decay energy spectra and multiplicity distributions for 8He+n, 8He+2n 8He+4n, and 8He+2n with α removal. 10He; deduced resonance, no evidence for initial state effects based on the halo structure of the initial 14Be assuming a direct α-particle removal reaction. 12He; deduced no evidence for the existence of a low-lying (≤1 MeV) resonance in 12He.

doi: 10.1103/PhysRevC.91.044312
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2015JO14      Phys.Rev. C 92, 051306 (2015)

M.D.Jones, N.Frank, T.Baumann, J.Brett, J.Bullaro, P.A.DeYoung, J.E.Finck, K.Hammerton, J.Hinnefeld, Z.Kohley, A.N.Kuchera, J.Pereira, A.Rabeh, W.F.Rogers, J.K.Smith, A.Spyrou, S.L.Stephenson, K.Stiefel, M.Tuttle-Timm, R.G.T.Zegers, M.Thoennessen

Two-neutron sequential decay of 24O

NUCLEAR REACTIONS 2H(24O, 2n22O), E=83.4 MeV/nucleon, [24O secondary beam from 9Be(48Ca, X), E=140 MeV/nucleon primary reaction at NSCL-MSU]; measured charged-particle spectra using position- and energy-sensitive detectors, E(n) and I(n) using MONA-LISA array, three-body decay energy, angular correlations. 24O; deduced level, resonance, l-transfer, width, evidence for two-neutron sequential decay from resonant state. 23O; deduced intermediate level, J, π through one-neutron decay of 24O resonant state. Comparison with di-neutron and phase-space model calculations for the three-body breakup.

doi: 10.1103/PhysRevC.92.051306
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2015KO08      Phys.Rev. C 91, 034323 (2015)

Z.Kohley, T.Baumann, G.Christian, P.A.DeYoung, J.E.Finck, N.Frank, B.Luther, E.Lunderberg, M.Jones, S.Mosby, J.K.Smith, A.Spyrou, M.Thoennessen

Three-body correlations in the ground-state decay of 26O

NUCLEAR REACTIONS 9Be(27F, 26O), E=82 MeV/nucleon, [27F secondary beam produced from projectile fragmentation of a 140 MeV/nucleon 48Ca primary beam]; measured (24O)nn-triple coin, three-body decay energy and angular correlations using MoNA-Sweeper setup at NSCL-MSU; deduced invariant mass and three-body correlations from the 26O ground-state resonance decay. Comparison with Monte-Carlo simulations using a phase-space, model, dineutron model, and three-body decay model. 26O; deduced 1σ upper limit of the ground-state resonance energy of 26O.

doi: 10.1103/PhysRevC.91.034323
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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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2015RO16      Phys.Rev. C 92, 034316 (2015)

W.F.Rogers, S.Garrett, A.Grovom, R.E.Anthony, A.Aulie, A.Barker, T.Baumann, J.J.Brett, J.Brown, G.Christian, P.A.DeYoung, J.E.Finck, N.Frank, A.Hamann, R.A.Haring-Kaye, J.Hinnefeld, A.R.Howe, N.T.Islam, M.D.Jones, A.N.Kuchera, J.Kwiatkowski, E.M.Lunderberg, B.Luther, D.A.Meyer, S.Mosby, A.Palmisano, R.Parkhurst, A.Peters, J.Smith, J.Snyder, A.Spyrou, S.L.Stephenson, M.Strongman, B.Sutherland, N.E.Taylor, M.Thoennessen

Unbound excited states of the N=16 closed shell nucleus 24O

NUCLEAR REACTIONS 9Be(26F, 24O), E=76 MeV/nucleon, [secondary 26F beam from 9Be(48Ca, X), E=140 MeV/nucleon primary reaction]; measured charged-particle spectra, E(n), I(n), (23O)n-coin using MONA-LISA array at NSCL-MSU. 24O; deduced decay energy spectrum, levels, J, π, difference between the first 2+ and 1+ states. Comparison with previous experimental results and theoretical calculations.

doi: 10.1103/PhysRevC.92.034316
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2013KO10      Phys.Rev.Lett. 110, 152501 (2013)

Z.Kohley, T.Baumann, D.Bazin, G.Christian, P.A.DeYoung, J.E.Finck, N.Frank, M.Jones, E.Lunderberg, B.Luther, S.Mosby, T.Nagi, J.K.Smith, J.Snyder, A.Spyrou, M.Thoennessen

Study of Two-Neutron Radioactivity in the Decay of 26O

RADIOACTIVITY 26O(2n) [from 9Be(27F, p), E=82 MeV/nucleon]; measured decay products, En, In; deduced T1/2. Comparison with theoretical calculations.

doi: 10.1103/PhysRevLett.110.152501
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2013KO28      Phys.Rev. C 88, 041601 (2013)

Z.Kohley, G.Christian, T.Baumann, P.A.DeYoung, J.E.Finck, N.Frank, M.Jones, J.K.Smith, J.Snyder, A.Spyrou, M.Thoennessen

Exploiting neutron-rich radioactive ion beams to constrain the symmetry energy

NUCLEAR REACTIONS 9Be(32Mg, X), [secondary 32Mg beam from Be(48Ca, X), E=140 MeV/nucleon primary reaction], E=73 MeV/nucleon; measured neutron spectra by MoNA array and particle spectra by 4 Tm Sweeper magnet, (particle)n-coin at yield of fragments at NSCL, MSU facility; deduced average N/Z vs Z, multiplicity, velocity distribution, density dependence of the symmetry energy by comparison of the experimental data with the constrained molecular dynamics model (CoMD) constraints.

doi: 10.1103/PhysRevC.88.041601
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2013MO12      Nucl.Phys. A909, 69 (2013)

S.Mosby, N.S.Badger, T.Baumann, D.Bazin, M.Bennett, J.Brown, G.Christian, P.A.DeYoung, J.E.Finck, M.Gardner, J.D.Hinnefeld, E.A.Hook, E.M.Lunderberg, B.Luther, D.A.Meyer, M.Mosby, G.F.Peaslee, W.F.Rogers, J.K.Smith, J.Snyder, A.Spyrou, M.J.Strongman, M.Thoennessen

Search for 21C and constraints on 22C

NUCLEAR REACTIONS 9Be(22C, n21C), E=68 MeV/nucleon; measured En, In(\theta), E(20C fragment), I(20C fragment, \theta). 21,22C calculated double neutron halo nucleus low-lying levels, J, π, spectrometric factor using shell model, Goldhaber model with friction term. 21C deduced non-existence of bound state. 20C+n deduced scattering length.

doi: 10.1016/j.nuclphysa.2013.04.004
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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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2013TH06      Nucl.Phys. A912, 1 (2013)

M.Thoennessen, S.Mosby, N.S.Badger, T.Baumann, D.Bazin, M.Bennett, J.Brown, G.Christian, P.A.DeYoung, J.E.Finck, M.Gardner, E.A.Hook, B.Luther, D.A.Meyer, M.Mosby, W.F.Rogers, J.K.Smith, A.Spyrou, M.J.Strongman

Observation of a low-lying neutron-unbound state in 19C

NUCLEAR REACTIONS 9Be(22N, n18C), (22N, n19C), (22N, n20C), E=68 MeV/nucleon; measured carbon fragments, En, In, (carbon)n-coin. 19C deduced 76 keV resonance, low-lying level scheme near neutron drip line; calculated low-lying levels, J, π using different shell models.

doi: 10.1016/j.nuclphysa.2013.05.001
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2012CH02      Phys.Rev.Lett. 108, 032501 (2012)

G.Christian, N.Frank, S.Ash, T.Baumann, D.Bazin, J.Brown, P.A.DeYoung, J.E.Finck, A.Gade, G.F.Grinyer, A.Grovom, J.D.Hinnefeld, E.M.Lunderberg, B.Luther, M.Mosby, S.Mosby, T.Nagi, G.F.Peaslee, W.F.Rogers, J.K.Smith, J.Snyder, A.Spyrou, M.J.Strongman, M.Thoennessen, M.Warren, D.Weisshaar, A.Wersal

Exploring the Low-Z Shore of the Island of Inversion at N=19

NUCLEAR REACTIONS Be(29Ne, X)28F/27F, E=62 MeV/nucleon; measured reaction products, TOF; deduced 28F ground state energy as resonance in the 27F+n continuum, binding energy. Comparison with USDA/USDB shell model predictions.

doi: 10.1103/PhysRevLett.108.032501
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2012CH12      Phys.Rev. C 85, 034327 (2012)

G.Christian, N.Frank, S.Ash, T.Baumann, P.A.DeYoung, J.E.Finck, A.Gade, G.F.Grinyer, B.Luther, M.Mosby, S.Mosby, J.K.Smith, J.Snyder, A.Spyrou, M.J.Strongman, M.Thoennessen, M.Warren, D.Weisshaar, A.Wersal

Spectroscopy of neutron-unbound 27, 28F

NUCLEAR REACTIONS 9Be(29Ne, X)27F/28F, [29Ne secondary beam from 9Be(48Ca, X), E=140 MeV/nucleon primary beam], E=62 MeV/nucleon; measured particle spectra, energy loss, time-of-flight, (26F)n-, (27F)n-, (26F)nγ-coin, E(n), E(26,27F). MoNA array for neutrons, CAESAR array for γ rays. 28F; deduced ground-state as unbound resonance in 27F+n continuum, binding energy. 27F; deduced neutron-unbound level. Comparison with USDA/USDB shell model predictions.

doi: 10.1103/PhysRevC.85.034327
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2012KO43      Phys.Rev.Lett. 109, 232501 (2012)

Z.Kohley, J.Snyder, T.Baumann, G.Christian, P.A.DeYoung, J.E.Finck, R.A.Haring-Kaye, M.Jones, E.Lunderberg, B.Luther, S.Mosby, A.Simon, J.K.Smith, A.Spyrou, S.L.Stephenson, M.Thoennessen

Unresolved Question of the 10He Ground State Resonance

NUCLEAR REACTIONS C, 2H(14Be, 2n2p)10He, E=59 MeV/nucleon; measured reaction products, En, In; deduced ground state resonance parameters. Comparison with available data, 18O secondary beams.

doi: 10.1103/PhysRevLett.109.232501
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2012LU07      Phys.Rev.Lett. 108, 142503 (2012)

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

Evidence for the Ground-State Resonance of 26O

RADIOACTIVITY 26O(2n) [from Be(27F, p)26O, E=82 MeV/nucleon];measured decay products, En, In. 26O; deduced decay energy spectrum, evidence for the ground state or resonance in neutron unbound nucleus, T1/2 limit. Comparison with theoretical calculations.

doi: 10.1103/PhysRevLett.108.142503
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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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2012SM08      Phys.Rev. C 86, 057302 (2012)

J.K.Smith, T.Baumann, B.A.Brown, G.Christian, J.E.Finck, C.R.Hoffman, Z.Kohley, S.Mosby, J.F.Novak, S.J.Quinn, J.Snyder, A.Spyrou, M.J.Strongman, M.Thoennessen

Neutron unbound states in 28Ne and 25F

NUCLEAR REACTIONS 9Be(29Na, 28Ne), (26F, 25F), [secondary 29Na and 26F beam from 9Be(48Ca, X), E=140 MeV/nucleon primary reaction], E=102 MeV/nucleon; measured charged fragment spectra by TOF and energy loss, neutron spectra using MONA array at NSCL facility, decay energy spectra for 28Ne and 25F reconstructed from the 27Ne+n and 24F+n systems. 25F, 28Ne; deduced unbound levels, J, π, spectroscopic factors, Breit-Wigner resonance. Glauber reaction model analysis. Comparison with shell model calculations.

NUCLEAR STRUCTURE 28Ne, 25F; calculated bound and unbound levels, J, π, spectroscopic factors for 27Ne+n system, widths. Shell model. Comparison with experimental data.

doi: 10.1103/PhysRevC.86.057302
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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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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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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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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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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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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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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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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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2000YO09      Phys.Rev. C62, 044604 (2000)

G.H.Yoo, G.M.Crawley, J.H.Kelley, N.A.Orr, J.C.Stasko, J.S.Winfield, S.Gales, S.Fortier, H.Laurent, T.Suomijarvi, J.E.Finck

Proton Decay following the Transfer Reaction (7Li, 6He) on 40Ca and 90Zr

NUCLEAR REACTIONS 40Ca, 90Zr(7Li, 6He), E=50 MeV/nucleon; measured E(6He), proton spectra and angular distribution following residual nucleus decay, (helium)p-coin; deduced reaction mechanism features. Comparison with model predictions.

doi: 10.1103/PhysRevC.62.044604
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1999AI02      Phys.Rev. C60, 034614 (1999)

N.Aissaoui, N.Added, N.Carlin, G.M.Crawley, S.Danczyk, J.Finck, M.M.de Moura, D.Hirata, D.J.Morrissey, S.J.Sanders, J.Stasko, M.Steiner, A.A.P.Suaide, E.M.Szanto, A.Szanto de Toledo, M.Thoennessen, J.A.Winger

Strong Absorption Radii from Reaction Cross Section Measurements for Neutron-Rich Nuclei

NUCLEAR REACTIONS Si(30Al, X), (31Al, X), (32Al, X), (33Al, X), (32Si, X), (33Si, X), (34Si, X), (35Si, X), (36Si, X), (34P, X), (35P, X), (36P, X), (37P, X), (38P, X), (39P, X), (36S, X), (37S, X), (38S, X), (39S, X), (40S, X), (41S, X), (39Cl, X), (40Cl, X), (41Cl, X), (42Cl, X), (43Cl, X), (44Cl, X), (41Ar, X), (42Ar, X), (43Ar, X), (44Ar, X), (45Ar, X), (46Ar, X), (44K, X), (45K, X), (46K, X), (47K, X), (48K, X), (46Ca, X), (47Ca, X), (48Ca, X), (49Ca, X), (50Ca, X), (49Sc, X), (50Sc, X), (51Sc, X), (52Sc, X), (53Ti, X), (54Ti, X), E ≈ 38-80 MeV/nucleon; measured mean energy-integrated reaction σ. 30,31,32,33Al, 32,33,34,35,36Si, 34,35,36,37,38,39P, 36,37,38,39,40,41S, 39,40,41,42,43,44Cl, 41,42,43,44,45,46Ar, 44,45,46,47,48K, 46,47,48,49,50Ca, 49,50,51,52Sc, 53,54Ti deduced strong absorption radii. Secondary beams from 55Mn fragmentation.

doi: 10.1103/PhysRevC.60.034614
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1997LI15      Phys.Rev. C56, 250 (1997)

I.Licot, N.Added, N.Carlin, G.M.Crawley, S.Danczyk, J.Finck, D.Hirata, H.Laurent, D.J.Morrissey, M.M.de Moura, H.R.Schelin, J.Stasko, M.Steiner, A.A.P.Suaide, A.Szanto de Toledo, E.M.Szanto, M.Thoennessen, J.A.Winger

Reaction Cross Sections and Radii for f-p Shell Exotic Neutron-Rich Nuclei

NUCLEAR REACTIONS, ICPND Si(41Ar, X), (42Ar, X), (43Ar, X), (44Ar, X), (45Ar, X), (46Ar, X), (44K, X), (45K, X), (46K, X), (47K, X), (48K, X), (49K, X), (46Ca, X), (47Ca, X), (48Ca, X), (49Ca, X), (50Ca, X), (51Ca, X), (49Sc, X), (50Sc, X), (51Sc, X), (52Sc, X), (53Sc, X), E=52-69 MeV/nucleon; measured reaction σ. 41,42,43,44,45,46Ar, 44,45,46,47,48,49K, 46,47,48,49,50,51Ca, 49,50,51,52,53Sc deduced strong absorption radii, neutron separation energies. Comparison to Glauber model, RMF theory.

doi: 10.1103/PhysRevC.56.250
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1996LH02      Phys.Rev. C54, 593 (1996)

I.Lhenry, T.Suomijarvi, Y.Blumenfeld, Ph.Chomaz, N.Frascaria, J.P.Garron, J.C.Roynette, J.A.Scarpaci, D.Beaumel, S.Fortier, S.Gales, H.Laurent, A.Gillibert, G.M.Crawley, J.Finck, G.Yoo, J.Barreto

One-Nucleon Transfer Reactions to Continuum States Induced by Heavy Ion Projectiles

NUCLEAR REACTIONS 207Pb, 209Bi, 59Co(20Ne, 19Ne), (20Ne, 21Na), (20Ne, 19F), E=48 MeV/nucleon; 207Pb, 209Bi, 63Cu(36Ar, 35Ar), (36Ar, 37K), E=42 MeV/nucleon; measured σ(E, θ); deduced structure, particle-hole states, collective strength. RPA, DWBA calculations, Bonaccorso-Brink single-particle transfer model.

doi: 10.1103/PhysRevC.54.593
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1995LH02      Nucl.Phys. A583, 115c (1995)

I.Lhenry, D.Beaumel, S.Fortier, S.Gales, H.Laurent, J.M.Maison, F.Azaiez, Y.Blumenfeld, J.Guillot, H.Langevin-Joliot, T.Suomijarvi, S.Brandenburg, G.M.Crawley, J.Finck, J.Stasko

A Search for the Isovector Monopole Resonance in 208Pb

NUCLEAR REACTIONS 208Pb(13C, 13N), E=60 MeV/nucleon; measured σ(θ), missing energy spectra. 208Tl deduced level, neutron decay features.

doi: 10.1016/0375-9474(94)00643-2
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1994LA10      Nucl.Phys. A569, 297c (1994)

H.Laurent, S.Gales, D.Beaumel, G.M.Crawley, J.E.Finck, S.Fortier, J.M.Maison, C.P.Massolo, D.J.Mercer, J.S.Winfield, G.H.Yoo

Spin-Isospin Multipole Excitations by Means of the (6Li, 6He) Reaction at 100 A.MeV

NUCLEAR REACTIONS 12,13C, 58Ni, 90Zr, 208Pb(6Li, 6He), E=100 MeV/nucleon; measured σ(θ, E(6He)). 13,12N, 58Cu, 90Nb, 208Bi deduced spin-isospin multipole excitation features.

doi: 10.1016/0375-9474(94)90120-1
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1993YO01      Phys.Rev. C47, 1200 (1993)

G.H.Yoo, G.M.Crawley, N.A.Orr, J.S.Winfield, J.E.Finck, S.Gales, Ph.Chomaz, I.Lhenry, T.Suomijarvi

High-Lying Resonances Observed in Heavy-Ion Transfer Reactions

NUCLEAR REACTIONS 207,208Pb, 209Bi, 89Y, 90,91Zr(7Li, 6Li), (7Li, 6He), (12C, 13C), (12C, 13N), E=30 MeV/nucleon; measured σ(θ, E); deduced structure.

doi: 10.1103/PhysRevC.47.1200
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1985FI05      Nucl.Phys. A441, 57 (1985)

J.E.Finck, G.M.Crawley, D.Weber, P.A.Smith

The 206,204Pb(p, α)203,201Tl Reactions at 35 MeV

NUCLEAR REACTIONS 204,206Pb(p, α), E=35 MeV; measured σ(Eα), σ(θ). 201,203Tl deduced levels, J, π. Cluster model, DWBA analysis.

doi: 10.1016/0375-9474(85)90167-8
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1983FI10      Nucl.Phys. A407, 163 (1983)

J.E.Finck, G.M.Crawley, J.A.Nolen, Jr., R.T.Kouzes

A Study of 206Pb by Inelastic Scattering of 35 MeV Protons

NUCLEAR REACTIONS 206Pb(p, p'), E=35 MeV; measured σ(Ep'), σ(θ). 206Pb deduced levels, L, deformation β(L). Collective, microscopic models, RPA, TDA wave functions.

doi: 10.1016/0375-9474(83)90313-5
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1981FI07      Phys.Lett. 107B, 182 (1981)

J.E.Finck, G.M.Crawley, J.A.Nolen, Jr., R.Kouzes

Systematics of Collective States in Lead Nuclei from Inelastic Proton Scattering

NUCLEAR REACTIONS 206Pb(p, p'), E=35 MeV; measured σ(θ). 206Pb deduced levels, transition strengths. Collective DWBA analysis.

doi: 10.1016/0370-2693(81)90808-X
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1981IW02      Phys.Rev. C23, 1960 (1981)

Y.Iwasaki, G.M.Crawley, J.E.Finck

Core Excitations in 63Cu by the 63Cu(p, p')63Cu and 65Cu(p, t)63Cu Reactions

NUCLEAR REACTIONS 65Cu(p, t), 63Cu(p, p'), E=40 MeV; measured σ(θ), momentum spectra. 63Cu levels deduced L, J, π, configuration. DWBA analysis, core-particle coupling interpretation.

doi: 10.1103/PhysRevC.23.1960
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1979IW03      Phys.Rev. C20, 861 (1979)

Y.Iwasaki, G.M.Crawley, R.G.Markham, J.E.Finck, J.H.Kim

Octupole States in 63Cu and the Weak-Coupling Picture

NUCLEAR REACTIONS 63Cu(p, p'), E=400 MeV; measured σ(Ep', θ). 63Cu deduced levels, octupole transitions. Weak coupling model.

doi: 10.1103/PhysRevC.20.861
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1979KI14      Phys.Rev. C20, 2084 (1979)

C.H.King, J.E.Finck, G.M.Crawley, J.A.Nolen, Jr., R.M.Ronningen

Multipole Moments of 154Sm, 176Yb, 232Th, and 238U from Proton Inelastic Scattering

NUCLEAR REACTIONS 154Sm, 176Yb, 232Th, 238U(p, p'), E=35 MeV; measured σ(Ep', θ); deduced optical model, β2, β4 parameters. Enriched targets, emulsion plates, proportional counter. Coupled channels calculations, rotation model.

doi: 10.1103/PhysRevC.20.2084
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1979SU01      Nucl.Phys. A313, 141 (1979)

T.Suehiro, J.E.Finck, J.A.Nolen, Jr.

A Study of the 54Fe(p, d)53Fe Reaction at 40 MeV

NUCLEAR REACTIONS 54Fe(p, d), E=40.16 MeV; measured σ(θ, Ed). 53Fe deduced levels, L, S. 54Fe enriched target.

doi: 10.1016/0375-9474(79)90572-4
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1976ST11      Nucl.Phys. A266, 424 (1976)

W.F.Steele, P.A.Smith, J.E.Finck, G.M.Crawley

A Survey of the (3He, 7Be) Reaction at 70 MeV

NUCLEAR REACTIONS 12,13C, 16O, 24,26Mg, 40,42,44Ca, 58,60,62,64Ni, 90Zr, 120,124Sn, 144Sm, 206Pb(3He, 7Be), E=70 MeV; measured σ(θ); deduced S α. 60Fe, 120Cd deduced mass excess. 8,9Be, 12C, 20,22Ne, 36,38,40Ar, 54,56,58,60Fe, 86Sr, 116,120Cd deduced levels.

doi: 10.1016/0375-9474(76)90368-7
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