NSR Query Results
Output year order : Descending NSR database version of April 26, 2024. Search: Author = N.Frank Found 50 matches. 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
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
2019SW04 Phys.Rev. C 100, 034323 (2019) C.Sword, J.Brett, T.Baumann, B.A.Brown, N.Frank, J.Herman, M.D.Jones, H.Karrick, A.N.Kuchera, M.Thoennessen, J.A.Tostevin, M.Tuttle-Timm, P.A.DeYoung Observation of three-neutron sequential emission from 25O* NUCLEAR REACTIONS 2H(27Ne, 2p)25O*, E=101.3 MeV/nucleon, [secondary 27Ne beam mixed with other light nuclei from fragmentation of 140 MeV/nucleon 48Ca primary beam from the Coupled Cyclotron Facility, and separated by A1900 Fragment Separator at NSCL-MSU]; measured E(n), 22O fragments, (22O)n-coin, four-body (22O+3n), three-body (22O+2n), and two-body (22O+1n) ungated and gated decay-energy and hit-multiplicity spectra using the Modular Neutron Array (MoNA) and Large multi-Institutional Scintillator Array (LISA); deduced mass of 25O from the invariant of the sum of the energy-momentum four-vectors of an 22O fragment and the three associated neutrons emitted from the excited states of 25O. 25O; deduced neutron-unbound levels, resonances, decay via three-neutron sequential emission to levels in 24O, 23O and 22O. Comparison with shell-model and eikonal calculations for two-proton removal reaction from 27Ne. NUCLEAR STRUCTURE 23,24,25O; calculated levels using Gamow shell model with the density-matrix renormalization-group (GSM-DMRG) method, and a continuum shell model (CSM). Comparison with experimental data.
doi: 10.1103/PhysRevC.100.034323
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
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
2016SM03 Nucl.Phys. A955, 27 (2016) J.K.Smith, T.Baumann, D.Bazin, J.Brown, P.A.DeYoung, N.Frank, M.D.Jones, Z.Kohley, B.Luther, B.Marks, A.Spyrou, S.L.Stephenson, M.Thoennessen, A.Volya Neutron correlations in the decay of the first excited state of 11Li NUCLEAR REACTIONS 9Be(13B, 11Li), E=71 MeV/nucleon; measured charged fragments using Sweeper high-field dipole magnet, En, In using MoNA-LISA array of plastic scintillators; deduced unnormalized three- and two-body 11Li-decay energy spectrum, 10Li resonances energy, width; calculated, simulated decay energy spectra, coincident energy spectra.
doi: 10.1016/j.nuclphysa.2016.05.023
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
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
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
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
2015MA62 Phys.Rev. C 92, 054320 (2015) B.R.Marks, P.A.DeYoung, J.K.Smith, T.Baumann, J.Brown, N.Frank, J.Hinnefeld, M.Hoffman, M.D.Jones, Z.Kohley, A.N.Kuchera, B.Luther, A.Spyrou, S.Stephenson, C.Sullivan, M.Thoennessen, N.Viscariello, S.J.Williams Population of 13Be in a nucleon exchange reaction NUCLEAR REACTIONS 9Be(13B, 13Be), E=71 MeV/nucleon, [secondary 13B beam from 9Be(18O, X), E=120 MeV/nucleon primary reaction]; measured E(n), I(n) from the decay of 13Be into 12B+n, decay energy spectrum reconstructed by invariant-mass method using A1900 fragment separator and MoNA-LISA array at NSCL-MSU. Nucleon (-1p, +1n) exchange reaction. 13Be; deduced levels, resonances, J, π, widths, relative populations. Comparison with previous experimental data.
doi: 10.1103/PhysRevC.92.054320
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
2015SM02 Nucl.Phys. A940, 235 (2015) J.K.Smith, T.Baumann, J.Brown, P.A.DeYoung, N.Frank, J.Hinnefeld, Z.Kohley, B.Luther, B.Marks, A.Spyrou, S.L.Stephenson, M.Thoennessen, S.J.Williams Selective population of unbound states in 10Li NUCLEAR REACTIONS 9Be(12B, 2p), E=71 MeV/nucleon. 10Li measured halo nucleus decay to 9Li plus neutron; calculated one-state and three-state decay; deduced resonances.
doi: 10.1016/j.nuclphysa.2015.04.011
2014SM03 Phys.Rev. C 90, 024309 (2014) J.K.Smith, T.Baumann, D.Bazin, J.Brown, S.Casarotto, P.A.DeYoung, N.Frank, J.Hinnefeld, M.Hoffman, M.D.Jones, Z.Kohley, B.Luther, B.Marks, N.Smith, J.Snyder, A.Spyrou, S.L.Stephenson, M.Thoennessen, N.Viscariello, S.J.Williams Low-lying neutron unbound states in 12Be NUCLEAR REACTIONS 9Be(13B, 12Be), E=71 MeV/nucleon, [secondary 13B beam from 9Be(18O, X), E=120 MeV/nucleon primary reaction; measured particle and neutron spectra, (12Be)n-, (11Be)2n-coin using A1900 fragment separator and MoNA-LISA array for neutron and fragment detection at NSCL-MSU facility. 12Be; deduced decay energy, level energy, resonance, L-value, J, π, width, one-neutron decay, no evidence for the 2n-decay channel to 10Be. Comparison with previous experimental results, and with continuum shell model calculation.
doi: 10.1103/PhysRevC.90.024309
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
2005ST29 Phys.Lett. B 627, 32 (2005) A.Stolz, T.Baumann, N.H.Frank, T.N.Ginter, G.W.Hitt, E.Kwan, M.Mocko, W.Peters, A.Schiller, C.S.Sumithrarachchi, M.Thoennessen First observation of 60Ge and 64Se NUCLEAR REACTIONS 9Be(78Kr, X)60Ge/61Ge/62Ge/63Ge/64Ge/64Se/65Se/66Se/67Se/68Se, E=140 MeV/nucleon; measured production σ, isotopic yields; deduced no evidence for 59Ga, 63As. 60Ge, 64Se deduced T1/2 lower limits. 59Ga, 63As deduced T1/2 upper limits.
doi: 10.1016/j.physletb.2005.08.130
2005ST34 Eur.Phys.J. A 25, Supplement 1, 335 (2005) A.Stolz, T.Baumann, N.H.Frank, T.N.Ginter, G.W.Hitt, E.Kwan, M.Mocko, W.Peters, A.Schiller, C.S.Sumithrarachchi, M.Thoennessen Discovery of 60Ge and 64Se NUCLEAR REACTIONS 9Be(78Kr, X)60Ge/61Ge/62Ge/63Ge/64Ge/64Se/65Se/66Se/67Se/68Se, E=140 MeV/nucleon; measured production σ, isotopic yields; deduced no evidence for 59Ga, 63As.
doi: 10.1140/epjad/i2005-06-192-y
2004CL02 Phys.Rev.Lett. 92, 172502 (2004) R.R.C.Clement, D.Bazin, W.Benenson, B.A.Brown, A.L.Cole, M.W.Cooper, P.A.DeYoung, A.Estrade, M.A.Famiano, N.H.Frank, A.Gade, T.Glasmacher, P.T.Hosmer, W.G.Lynch, F.Montes, W.F.Mueller, G.F.Peaslee, P.Santi, H.Schatz, B.M.Sherrill, M.-J.van Goethem, M.S.Wallace New Approach for Measuring Properties of rp-Process Nuclei NUCLEAR REACTIONS H, C(34Ar, 33ArX), E=84 MeV/nucleon; measured Eγ, Iγ, (particle)γ-coin following neutron removal. 33Ar deduced levels, J, π, spectroscopic factors. 32Cl(p, γ), E=low; calculated astrophysical reaction rates.
doi: 10.1103/PhysRevLett.92.172502
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
2004TH13 Nucl.Phys. A746, 536c (2004) M.Thoennessen, T.Baumann, B.A.Brown, J.Enders, N.H.Frank, P.G.Hansen, P.Heckman, B.A.Luther, J.P.Seitz, A.Stolz, E.Tryggestad Single proton knock-out from 24F NUCLEAR REACTIONS 12C(24F, X)20O/21O/22O/23O, E=46.7 MeV/nucleon; measured single proton knock-out yields, spectroscopic strengths. 23O deduced ground-state configuration.
doi: 10.1016/j.nuclphysa.2004.09.109
2003BA47 Phys.Rev. C 67, 061303 (2003) T.Baumann, N.Frank, B.A.Luther, D.J.Morrissey, J.P.Seitz, B.M.Sherrill, M.Steiner, J.Stetson, A.Stolz, M.Thoennessen, I.Wiedenhover First search for 16Be NUCLEAR REACTIONS Be(40Ar, X)6He/8He/9Li/11Li/12Be/14Be/17B/19B/20C, E=140 MeV/nucleon; measured yields; deduced no evidence for 16Be. Fragment separator.
doi: 10.1103/PhysRevC.67.061303
2003EN05 Phys.Rev. C 67, 064301 (2003) J.Enders, T.Baumann, B.A.Brown, N.H.Frank, P.G.Hansen, P.R.Heckman, B.M.Sherrill, A.Stolz, M.Thoennessen, J.A.Tostevin, E.J.Tryggestad, S.Typel, M.S.Wallace Spectroscopic factors measured in inclusive proton-knockout reactions on 8B and 9C at intermediate energies NUCLEAR REACTIONS 12C(9C, 8BX), (9C, 7BeX), (8B, 7BeX), E ≈ 77 MeV/nucleon; measured proton-knockout σ. 8B, 9C deduced spectroscopic factors. Comparisons with previous results, model predictions. Astrophysical implications discussed.
doi: 10.1103/PhysRevC.67.064301
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
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
2003TH07 Phys.Rev. C 68, 044318 (2003) M.Thoennessen, T.Baumann, B.A.Brown, J.Enders, N.Frank, P.G.Hansen, P.Heckman, B.A.Luther, J.Seitz, A.Stolz, E.Tryggestad Single proton knock-out reactions from 24, 25, 26F NUCLEAR REACTIONS 12C(24F, X), (25F, X), (26F, X)20O/21O/22O/23O/24O, E ≈ 50 MeV/nucleon; measured production σ. 12C(24F, 23O), (25F, 24O), (26F, 25O), E ≈ 50 MeV/nucleon; measured one-proton knock-out σ; deduced spectroscopic factors. 25O deduced particle instability. Comparisons with model predictions.
doi: 10.1103/PhysRevC.68.044318
2003TH10 Nucl.Phys. A722, 61c (2003) M.Thoennessen, T.Baumann, J.Enders, N.H.Frank, P.Heckman, J.P.Seitz, A.Stolz, E.Tryggestad Investigation of neutron-rich oxygen and fluorine isotopes NUCLEAR REACTIONS 12C(24F, X)19O/20O/21O/22O/23O, E=46.7 MeV/nucleon; 12C(25F, X), (26F, X)20O/21O/22O/23O/24O, E ≈ 50 MeV/nucleon; measured yields; deduced no evidence for 25O.
doi: 10.1016/S0375-9474(03)01336-8
1995FR26 Nucl.Instrum.Methods Phys.Res. B101, 258 (1995) A Simplified Procedure for the Measurement of 231Pa in Mn Encrustations RADIOACTIVITY 231Pa(α); 233Pa(β-); measured α-, β-spectra; deduced utilization in measuring high resolution profiles in Mn crusts. One-ion exchange step followed by Pa electrodeposition.
doi: 10.1016/0168-583X(95)00502-1
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