NSR Query Results
Output year order : Descending NSR database version of April 11, 2024. Search: Author = T.Baumann Found 128 matches. Showing 1 to 100. [Next]2024WA19 Phys.Rev. C 109, 035806 (2024) K.-L.Wang, A.Estrade, M.Famiano, H.Schatz, M.Barber, T.Baumann, D.Bazin, K.Bhatt, T.Chapman, J.Dopfer, B.Famiano, S.George, M.Giles, T.Ginter, J.Jenkins, S.Jin, L.Klankowski, S.Liddick, Z.Meisel, N.Nepal, J.Pereira, N.Rijal, A.M.Rogers, O.B.Tarasov, G.Zimba Mass measurements of neutron-rich nuclei near N=70
doi: 10.1103/PhysRevC.109.035806
2023HA31 Phys.Rev. C 108, 034608 (2023) K.Haak, O.B.Tarasov, P.Chowdhury, A.M.Rogers, K.Sharma, T.Baumann, D.Bazin, P.C.Bender, J.Chen, A.Estrade, M.A.Famiano, D.C.Foulds-Holt, N.Fukuda, A.Gade, T.N.Ginter, R.W.Gohier, M.Hausmann, A.M.Hill, D.E.M.Hoff, L.Klankowski, E.Kwan, J.Li, S.N.Liddick, B.Longfellow, S.Lyons, C.Morse, M.Portillo, D.Rhodes, A.L.Richard, S.Samaranayake, B.M.Sherrill, M.K.Smith, M.Spieker, C.S.Sumithrarachchi, H.Suzuki, K.Wang, S.Waniganeththi, D.Weisshaar, S.Zhu Production and discovery of neutron-rich isotopes by fragmentation of 198Pt NUCLEAR REACTIONS 9Be, Ni(198Pt, X)182Yb/183Lu/184Lu/185Lu/186Lu/187Lu/188Lu/189Lu/184Hf/185Hf/186Hf/187Hf/188Hf/189Hf/190Hf/191Hf/192Hf/185Ta/186Ta/187Ta/188Ta/189Ta/190Ta/191Ta/192Ta/193Ta/186W/187W/188W/189W/190W/191W/192W/193W/194W/187Re/188Re/189Re/190Re/191Re/192Re/193Re/194Re/195Re/196Re/190Os/191Os/192Os/193Os/194Os/195Os/196Os/197Os/192Ir/193Ir/194Ir/195Ir/196Ir/197Ir/198Ir, E=85 MeV/nucleon from the NSCL-MSU Coupled Cyclotron Facility (CCF); measured reaction products, particle identification spectra using A1900 fragment separator, S800 spectrograph for fragment analysis, PIN diode telescope of five silicon detectors for particle detection, γ rays using GRETINA array, and LISE+ Monte Carlo calculations of charge state fractions; deduced production cross sections of about 70 nuclei in Z=70-77 region. 189Lu, 191,192Hf; deduced new nuclides. 190W; measured γ-ray spectrum from the emission of a 166-μs isomer. Comparison of measured production cross sections with theoretical calculations using EFAX3 and COFRA codes. Numerical values of production cross sections are listed in the Supplemental Material.
doi: 10.1103/PhysRevC.108.034608
2023NZ01 Phys.Rev. C 107, 064315 (2023) P.Nzabahimana, T.Redpath, T.Baumann, P.Danielewicz, P.Giuliani, P.Gueye Deconvoluting experimental decay energy spectra: The 26O case RADIOACTIVITY 26O(2n); analyzed experimental decay spectra; deducedenergy of the resonances. Richardson-Lucy algorithm, deblurring method used in optics, applied to restoration of the energy spectrum from the three-body decay of 26O. Deep neural network analysis of the experimental spectrum. Analysis of the data obtained with Modular Neutron Array and Large multi-Institutional Scin tillator Array (MoNA-LISA).
doi: 10.1103/PhysRevC.107.064315
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
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
2021DO03 Phys.Rev. C 103, 025810 (2021) A.C.Dombos, A.Spyrou, F.Naqvi, S.J.Quinn, S.N.Liddick, A.Algora, T.Baumann, J.Brett, B.P.Crider, P.A.DeYoung, T.Ginter, J.Gombas, S.Lyons, T.Marketin, P.Moller, W.-J.Ong, A.Palmisano, J.Pereira, C.J.Prokop, P.Sarriguren, D.P.Scriven, A.Simon, M.K.Smith, S.Valenta Total absorption spectroscopy of the β decay of 101, 102Zr and 109Tc RADIOACTIVITY 101,102Zr, 109Tc(β-)[from 9Be(124Sn, X), E=120 MeV/nucleon, followed by separation of fragments using A1900 separator at NSCL-MSU]; measured Eγ, Iγ, implanted ions, (implants)γ-correlations using Summing NaI(Tl) (SuN) detector for total absorption spectroscopy; deduced β feedings as function of excitation energy, B(GT). Comparison with theoretical results from three different quasiparticle random-phase approximation (QRPA) models to investigate the ground-state shapes of the parent nuclei, and to test commonly used models that provide β-decay properties in r-process network calculations.
doi: 10.1103/PhysRevC.103.025810
2021GO10 Phys.Rev. C 103, 035803 (2021) J.Gombas, P.A.DeYoung, A.Spyrou, A.C.Dombos, A.Algora, T.Baumann, B.Crider, J.Engel, T.Ginter, E.Kwan, S.N.Liddick, S.Lyons, F.Naqvi, E.M.Ney, J.Pereira, C.Prokop, W.Ong, S.Quinn, D.P.Scriven, A.Simon, C.Sumithrarachchi β-decay feeding intensity distributions for 103, 104mNb RADIOACTIVITY 103,104mNb(β-)[from 9Be(124Sn, X), E not given, followed by separation of fragments using A1900 separator at NSCL-MSU]; measured reaction products and particle identification plot from 9Be(124Sn, X), Eγ, Iγ, total absorption gamma spectra from the decays of 103Nb and 104mNb using Summing NaI(Tl) (SuN) detector at the NSCL-MSU; deduced Iβ feedings to levels in 103Mo and 104Mo, cumulative B(GT) values. Comparison to predictions of quasiparticle random-phase approximation (QRPA) model. Relevance to antineutrino studies of nuclear reactors, and astrophysical r process.
doi: 10.1103/PhysRevC.103.035803
2020CI04 Phys.Rev. C 101, 034305 (2020) A.A.Ciemny, W.Dominik, T.Ginter, R.Grzywacz, Z.Janas, M.Kuich, C.Mazzocchi, M.Pfutzner, M.Pomorski, D.Bazin, T.Baumann, A.Bezbakh, B.P.Crider, M.Cwiok, S.Go, G.Kaminski, K.Kolos, A.Korgul, E.Kwan, S.Liddick, K.Miernik, S.V.Paulauskas, J.Pereira, T.Roginski, K.Rykaczewski, C.Sumithrarachchi, Y.Xiao, H.Schatz, P.Sarriguren First identification of 58Zn β-delayed proton emission RADIOACTIVITY 57,58Zn(β+), (β+p)[from 9Be(78Kr, X), followed by separation of fragments using A1900 separator]; measured reaction products, Ep, Ip, β-delayed proton branching ratio, half-life of 57Zn decay using the Warsaw Optical Time Projection Chamber (OTPC) with energy loss and time-of-flight method for particle identification at the NSCL-MSU facility. 58Cu; deduced levels, J, π, β+p branching ratios, B(GT) for 1+ states. Comparison with experimental B(GT) values from 58Ni(3He, t)58Cu reaction, and with QRPA calculations.
doi: 10.1103/PhysRevC.101.034305
2020GO10 Phys.Rev. C 102, 044331 (2020) S.Go, R.Grzywacz, C.Mazzocchi, S.N.Liddick, M.Alshudifat, J.C.Batchelder, T.Baumann, A.A.Ciemny, T.N.Ginter, C.J.Gross, K.Kolos, A.Korgul, S.V.Paulauskas, C.J.Prokop, M.M.Rajabali, K.P.Rykaczewski, S.Taylor, Y.Xiao Mapping of fragmented νf5/2 → πf7/2 transitions in the 73Co → 73Ni decay RADIOACTIVITY 73,75Co(β-), (β-n)[from 9Be(82Se, X), E=140 MeV/nucleon at NSCL-MSU, followed by separation of reaction products of interest using A1900 fragment separator, and implanted into Ge double-sided strip detector (GeDSSD)]; measured Eγ, Iγ, βγ-, γγ- and βγγ-coin, half-lives of the decays of 73Co and 75Co using eight clover Ge detectors. 73,75Ni; deduced levels, J, π, β feedings. logft, B(GT) values, %β-n for 73Co decay. Comparison with shell-model calculations. Experimental and theoretical systematics of delayed-neutron emission probabilities (Pn) for the decays of 69,71,73,75,77Co. NUCLEAR STRUCTURE 69,71,73,75,77Ni; calculated levels, J, π using fpgpn interaction with 40Ca core, and jj44pna interaction with 56Ni core. Comparison with experimental data.
doi: 10.1103/PhysRevC.102.044331
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
2019DO02 Phys.Rev. C 99, 015802 (2019) A.C.Dombos, A.Spyrou, F.Naqvi, S.J.Quinn, S.N.Liddick, A.Algora, T.Baumann, J.Brett, B.P.Crider, P.A.DeYoung, T.Ginter, J.Gombas, E.Kwan, S.Lyons, W.-J.Ong, A.Palmisano, J.Pereira, C.J.Prokop, D.P.Scriven, A.Simon, M.K.Smith, C.S.Sumithrarachchi β-decay half-lives of neutron-rich nuclides in the A=100--110 mass region RADIOACTIVITY 99Y, 101,102Zr, 102m,103,104mNb, 109Tc(β-)[from 9Be(124Sn, X), E=120 MeV/nucleon, followed by separation of reaction products using A1900 fragment separator]; measured (implants)γ-coin, time-of-flight, total energy loss of fragments, and half-lives from (implants)γ-correlated decay curves using the implantation station installed inside the Summing NaI(Tl) (SuN) detector for the total absorption spectroscopy (TAS) technique at the NSCL-MSU facility. Comparison with previous experimental values; compiled measured and evaluated half-lives in literature for the seven isotopes studied in this work. Relevance to B(GT) distributions, nuclear astrophysics, nuclear structure, and nuclear technology.
doi: 10.1103/PhysRevC.99.015802
2019KA44 Phys.Lett. B 797, 134803 (2019) D.Kahl, P.J.Woods, T.Poxon-Pearson, F.M.Nunes, B.A.Brown, H.Schatz, T.Baumann, D.Bazin, J.A.Belarge, P.C.Bender, B.Elman, A.Estrade, A.Gade, A.Kankainen, C.Lederer-Woods, S.Lipschutz, B.Longfellow, S.-J.Lonsdale, E.Lunderberg, F.Montes, W.J.Ong, G.Perdikakis, J.Pereira, C.Sullivan, R.Taverner, D.Weisshaar, R.Zegers Single-particle shell strengths near the doubly magic nucleus 56Ni and the 56Ni(p, γ)57Cu reaction rate in explosive astrophysical burning NUCLEAR REACTIONS 2H(56Ni, n), (56Ni, p), E=33.6 MeV/nucleon; measured reaction products, Eγ, Iγ. 57Cu; deduced σ, spectroscopic factors, resonance parameters, astrophysical reaction rates.
doi: 10.1016/j.physletb.2019.134803
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
2019WA18 Phys.Rev. C 99, 054625 (2019) D.Walter, S.D.Pain, J.A.Cizewski, F.M.Nunes, S.Ahn, T.Baugher, D.W.Bardayan, T.Baumann, D.Bazin, S.Burcher, K.A.Chipps, G.Cerizza, K.L.Jones, R.L.Kozub, S.J.Lonsdale, B.Manning, F.Montes, P.D.O'Malley, S.Ota, J.Pereira, A.Ratkiewicz, P.Thompson, C.Thornsberry, S.Williams Constraining spectroscopic factors near the r-process path using combined measurements: 86Kr (d, p) 87Kr NUCLEAR REACTIONS 2H(86Kr, p), E=33 MeV/nucleon; measured Ep, Ip, recoils, (recoils)p-coin, differential σ(θ) using the Oak Ridge Rutgers University Barrel Array (ORRUBA) coupled to the S800 magnetic spectrograph at the NSCL-MSU facility. 87Kr; deduced levels, J, π, L-transfer, single-particle asymptotic normalization coefficients (ANCs) and spectroscopic factors for the ground, first 1/2+, and 7/2+ states. Comparison with FR-ADWA analysis with KD optical model parameters, and with previous experimental results at E=5.5 MeV/nucleon.
doi: 10.1103/PhysRevC.99.054625
2019WO01 Phys.Rev.Lett. 122, 232701 (2019) C.Wolf, C.Langer, F.Montes, J.Pereira, W.-J.Ong, T.Poxon-Pearson, S.Ahn, S.Ayoub, T.Baumann, D.Bazin, P.C.Bender, B.A.Brown, J.Browne, H.Crawford, R.H.Cyburt, E.Deleeuw, B.Elman, S.Fiebiger, A.Gade, P.Gastis, S.Lipschutz, B.Longfellow, Z.Meisel, F.M.Nunes, G.Perdikakis, R.Reifarth, W.A.Richter, H.Schatz, K.Schmidt, J.Schmitt, C.Sullivan, R.Titus, D.Weisshaar, P.J.Woods, J.C.Zamora, R.G.T.Zegers Constraining the Neutron Star Compactness: Extraction 23Al(p, γ) Reaction Rate for the rp Process NUCLEAR REACTIONS 2H(23Al, n), E=48 MeV/nucleon; measured reaction products, En, In, Eγ, Iγ; deduced J, π, σ, σ(θ), resonance widths and spectroscopic strengths, reaction rates.
doi: 10.1103/PhysRevLett.122.232701
2018DI09 Phys.Rev. C 98, 024306 (2018) D.A.Divaratne, C.R.Brune, H.N.Attanayake, T.Baumann, D.Bazin, A.Gade, S.M.Grimes, P.M.King, M.Thoennessen, J.A.Tostevin One- and two-neutron removal cross sections of 24O NUCLEAR REACTIONS 9Be(24O, 23O), (24O, 22O), E=92.3 MeV/nucleon, [secondary 24O beam from 9Be(48Ca, X), E=140 MeV/nucleon primary reaction, and using A1900 fragment separator at NSCL-MSU]; measured reaction products using S800 magnetic spectrograph, time of flight, parallel momentum distributions, and inclusive σ for one- and two-neutron removals. 22,23O; deduced levels, J, π, spectroscopic factors. 24O; deduced spherical, doubly-magic structure. Comparison with eikonal reaction model plus shell model calculations using USD-B interaction and the sd model space.
doi: 10.1103/PhysRevC.98.024306
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
2016CI01 Eur.Phys.J. A 52, 89 (2016) A.A.Ciemny, W.Dominik, T.Ginter, R.Grzywacz, Z.Janas, M.Kuich, C.Mazzocchi, K.Miernik, M.Pfutzner, M.Pomorski, D.Bazin, T.Baumann, A.Bezbakh, B.P.Crider, M.Cwiok, S.Go, G.Kaminski, K.Kolos, A.Korgul, E.Kwan, S.N.Liddick, S.V.Paulauskas, J.Pereira, K.P.Rykaczewski, C.Sumithrarachchi, Y.Xiao First measurement of 60Ge β-decay RADIOACTIVITY 60Ge(β+)[from 78Kr+9Be fragmentation at 150 MeV/nucleon]; measured reaction products using OTPC (Optical Time Projection Chamber) plus GEM (Gas Electron Multiplier) for each βp decay event; deduced T1/2. Compared with Moeller measurement and with calculations using three different mass formulae.
doi: 10.1140/epja/i2016-16089-x
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
2015BR10 Phys.Rev. C 92, 034306 (2015) T.Braunroth, A.Dewald, H.Iwasaki, S.M.Lenzi, M.Albers, V.M.Bader, T.Baugher, T.Baumann, D.Bazin, J.S.Berryman, C.Fransen, A.Gade, T.Ginter, A.Gottardo, M.Hackstein, J.Jolie, A.Lemasson, J.Litzinger, S.Lunardi, T.Marchi, V.Modamio, C.Morse, D.R.Napoli, A.Nichols, F.Recchia, S.R.Stroberg, R.Wadsworth, D.Weisshaar, K.Whitmore, K.Wimmer Reduced transition strengths of low-lying yrast states in chromium isotopes in the vicinity of N=40 NUCLEAR REACTIONS 9Be(59Mn, 58Cr), E=92.1 MeV/nucleon; 9Be(61Mn, 60Cr), E=91.9 MeV/nucleon; 9Be(63Mn, 62Cr), E=98 MeV/nucleon, [secondary 59,61,63Mn beams from 9Be(82Se, X), E=140 MeV/nucleon primary reaction using A1900 separator at NSCL-MSU]; measured Eγ, Iγ, beam-like recoil particle spectra and yields, (particle)γ-coin, level half-lives by recoil-distance Doppler-shift (RDDS) method using S800 spectrograph and SeGA array. 58,60,62Cr; deduced levels, J, π, B(E2), intrinsic quadrupole moments Q0 and deformation parameter β2. Comparison with calculations using shell-model with LNPS interactions, realistic shell-model, and IBM-2. Systematics of energies and B(E2) for first 2+ states in N=22-52, Ti, Cr, Fe, Ni, Se and Kr nuclei. Systematics of ratios of energies and B(E2) values for first 2+, 4+ and 6+ states in 52,54,56,58,60,62Cr, and E(5) limit.
doi: 10.1103/PhysRevC.92.034306
2015CI06 Phys.Rev. C 92, 014622 (2015) A.A.Ciemny, W.Dominik, T.Ginter, R.Grzywacz, Z.Janas, M.Kuich, C.Mazzocchi, M.Pfutzner, M.Pomorski, F.Zarzynski, D.Bazin, T.Baumann, A.Bezbakh, B.P.Crider, M.Cwiok, S.Go, G.Kaminski, K.Kolos, A.Korgul, E.Kwan, S.Liddick, K.Miernik, S.V.Paulauskas, J.Pereira, K.Rykaczewski, C.Sumithrarachchi, Y.Xiao First observation of 59Ge NUCLEAR REACTIONS 9Be(78Kr, X)59Ge/60Ge/61Ge/62Ge, E=150 MeV/nucleon; measured production cross sections using A1900 separator and Optical Time Projection Chamber (OTPC) at NSCL-MSU facility; deduced new 59Ge isotope. Comparison with EPAX3 theoretical calculations. Relevance to 2p radioactivity.
doi: 10.1103/PhysRevC.92.014622
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
2014PO05 Phys.Rev. C 90, 014311 (2014) M.Pomorski, M.Pfutzner, W.Dominik, R.Grzywacz, A.Stolz, T.Baumann, J.S.Berryman, H.Czyrkowski, R.Dabrowski, A.Fijalkowska, T.Ginter, J.Johnson, G.Kaminski, N.Larson, S.N.Liddick, M.Madurga, C.Mazzocchi, S.Mianowski, K.Miernik, D.Miller, S.Paulauskas, J.Pereira, K.P.Rykaczewski, S.Suchyta Proton spectroscopy of 48Ni, 46Fe, and 44Cr RADIOACTIVITY 48Ni(2p); 44Cr, 46Fe(β+p); 46Fe(β+2p); [44Cr, 46Fe, 48Ni activities from Ni(58Ni, X), E=160 MeV/nucleon]; measured Ep, Ip, half-lives of ground states of 44Cr, 46Fe, 48Ni, proton branching ratios using an optical time projection chamber (OPTC). Reconstruction of the four 2p-decay events from decay of 48Ni; deduced Q(2p). Comparison previous experimental results. NUCLEAR REACTIONS Ni(58Ni, X)44Cr/46Fe/48Ni, E=160 MeV/nucleon; measured fragment spectra, time-of-flight, energy loss and production σ using A1900 separator and standard acquisition system at NSCL-MSU facility. LISE++ analysis. Comparison with EPAX-3 and EPAX-2.1 parametrizations.
doi: 10.1103/PhysRevC.90.014311
2014RA20 J.Phys.(London) G41, 115104 (2014) M.M.Rajabali, R.Grzywacz, S.N.Liddick, C.Mazzocchi, J.C.Batchelder, T.Baumann, C.R.Bingham, I.G.Darby, T.N.Ginter, S.V.Ilyushkin, M.Karny, W.Krolas, P.F.Mantica, K.Miernik, M.Pfutzner, K.P.Rykaczewski, D.Weisshaar, J.A.Winger β decay of 72Co and microsecond isomers in even-mass neutron-rich nickel isotopes RADIOACTIVITY 72Co(β-) [from 9Be(86Kr, X), E=140 MeV/nucleon]; measured decay products, Eγ, Iγ. 76Ni; deduced energy levels, J, π, isomeric state T1/2. Comparison with shell model calculations, available data.
doi: 10.1088/0954-3899/41/11/115104
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
2014VO05 Phys.Rev. C 90, 014301 (2014) P.Voss, T.Baumann, D.Bazin, A.Dewald, H.Iwasaki, D.Miller, A.Ratkiewicz, A.Spyrou, K.Starosta, M.Thoennessen, C.Vaman, J.A.Tostevin 19Mg two-proton decay lifetime RADIOACTIVITY 19Mg(2p)[from 9Be(20Mg, X), E=170 MeV/nucleon]; measured energy-loss spectra in coincidence with incoming 20Mg on the target and outgoing 17Ne, two-proton decay half-life as a function of 17Ne production mechanism. Experiments carried out at NSCL-MSU facility. Comparison with previous experimental results. NUCLEAR REACTIONS 9Be(20Mg, X)10C/14O/16O/17Ne/18Ne/20Na/19Mg/20Mg/21Mg/, E=170 MeV/nucleon; measured reaction products, yields using A1900 separator and S800 magnetic spectrograph at NSCL-MSU facility.
doi: 10.1103/PhysRevC.90.014301
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
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
2013SN02 Phys.Rev. C 88, 031303 (2013) J.Snyder, T.Baumann, G.Christian, R.A.Haring-Kaye, P.A.DeYoung, Z.Kohley, B.Luther, M.Mosby, S.Mosby, A.Simon, J.K.Smith, A.Spyrou, S.Stephenson, M.Thoennessen First observation of 15Be NUCLEAR REACTIONS 2H(14Be, 15Be), E=59 MeV/nucleon, [secondary 14Be from 9Be(18O, X), E=120 MeV/nucleon primary reaction]; measured 14Be, and neutron spectra from decay of 15Be, TOF, production σ, (14Be)n-coin using MoNA array at NSCL-MSU facility. Decay energy spectrum of 15Be fitted with energy-dependent Breit-Wigner distribution. 15Be; deduced level, J, π, neutron-unbound resonance, width. Shell-model calculations.
doi: 10.1103/PhysRevC.88.031303
2013TA14 Phys.Rev. C 87, 054612 (2013) O.B.Tarasov, M.Portillo, D.J.Morrissey, A.M.Amthor, L.Bandura, T.Baumann, D.Bazin, J.S.Berryman, B.A.Brown, G.Chubarian, N.Fukuda, A.Gade, T.N.Ginter, M.Hausmann, N.Inabe, T.Kubo, J.Pereira, B.M.Sherrill, A.Stolz, C.Sumithrarachchi, M.Thoennessen, D.Weisshaar Production cross sections from 82Se fragmentation as indications of shell effects in neutron-rich isotopes close to the drip-line NUCLEAR REACTIONS Be, W(82Se, X), E=139 MeV/nucleon; measured fragment spectra using A1900 fragment separator at NSCL facility. Z=11, A=27-33; Z=12, A=29-37; Z=13, A=31-39; Z=14, A=29-42; Z=15, A=31-45; Z=16, A=33-48; Z=17, A=35-50; Z=18, A=38-52; Z=19, A=39-55; Z=20, A=41-58; Z=21, A=43-61; Z=22, A=46-64; Z=23, A=47-67; Z=24, A=50-70; Z=25, A=52-72; Z=26, A=54-60; Z=26, A=63-75; Z=27, A=56-62; Z=27, A=65-76; Z=28, A=60-63; Z=28, A=67-78; Z=29, A=62-65; Z=29, A=70-78; Z=30, A=64-68; Z=30, A=73-80; Z=31, A=75-81; Z=32, A=79-82; Z=33, A=81-83; measured production cross sections for 334 isotopes, and longitudinal momentum distributions for 126 isotopes. 64Ti, 67V, 69,70Cr, 72Mn, 75Fe; measured production cross sections for isotopes first identified in this study. Comparison with calculations using abrasion-ablation model. Evidence for subshell closure at N=34 around Z=20.
doi: 10.1103/PhysRevC.87.054612
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
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
2013TH07 Nucl.Instrum.Methods Phys.Res. A729, 207 (2013) M.Thoennessen, G.Christian, Z.Kohley, T.Baumann, M.Jones, J.K.Smith, J.Snyder, A.Spyrou Novel techniques to search for neutron radioactivity RADIOACTIVITY 16B(2n); measured decay products, En, In; deduced new technique, T1/2 sensitivity. Decay in Target (DiT) and Decay in a Magnetic Field (DiMF) methods.
doi: 10.1016/j.nima.2013.07.035
2012BA05 Rep.Prog.Phys. 75, 036301 (2012) T.Baumann, A.Spyrou, M.Thoennessen Nuclear structure experiments along the neutron drip line
doi: 10.1088/0034-4885/75/3/036301
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
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
2012LO08 Phys.Rev. C 86, 014313 (2012) G.Lorusso, A.Becerril, A.Amthor, T.Baumann, D.Bazin, J.S.Berryman, B.A.Brown, R.H.Cyburt, H.L.Crawford, A.Estrade, A.Gade, T.Ginter, C.J.Guess, M.Hausmann, G.W.Hitt, P.F.Mantica, M.Matos, R.Meharchand, K.Minamisono, F.Montes, G.Perdikakis, J.Pereira, M.Portillo, H.Schatz, K.Smith, J.Stoker, A.Stolz, R.G.T.Zegers β-delayed proton emission in the 100Sn region RADIOACTIVITY 89Ru, 91,92Rh, 93Pd, 95,96,96mAg, 96,97,97mCd, 98,98m,99,100In, 100,101Sn[from 9Be(112Sn, X), E=140 MeV/nucleon](β+), (EC), (β+p); measured Eγ, Iγ, β spectra, E(p), I(p), βγ-coin, βp-coin, γβp-coin, fragment yields, half-lives, β-delayed proton emission branching ratios using NSCL Beta Counting System and SeGA array. Discussed rp-process implications. Comparison with previous studies and theoretical calculations. X-ray bursts calculations.
doi: 10.1103/PhysRevC.86.014313
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
2012PO03 Acta Phys.Pol. B43, 267 (2012) M.Pomorski, M.Pfutzner, W.Dominik, R.Grzywacz, T.Baumann, J.Berryman, H.Czyrkowski, R.Dabrowski, T.Ginter, L.Grigorenko, J.Johnson, G.Kaminski, A.Kuzniak, N.Larson, S.N.Liddick, M.Madurga, C.Mazzocchi, S.Mianowski, K.Miernik, D.Miller, S.Palauskas, J.Pereira, K.P.Rykaczewski, A.Stolz, S.Suchyta Studies of 48Ni Using the Optical Time Projection Chamber RADIOACTIVITY 48Ni(2p) [from Ni(58Ni, X)48Ni/46Fe/44Cr, E=160 MeV/nucleon]; measured decay products, Ep, Ip; deduced proton energy distribution, T1/2. NUCLEAR REACTIONS Ni(58Ni, X)48Ni/46Fe/44Cr, E=160 MeV/nucleon; measured reaction products. 48Ni; deduced production σ.
doi: 10.5506/APhysPolB.43.267
2012QU01 Phys.Rev. C 85, 035807 (2012) M.Quinn, A.Aprahamian, J.Pereira, R.Surman, O.Arndt, T.Baumann, A.Becerril, T.Elliot, A.Estrade, D.Galaviz, T.Ginter, M.Hausmann, S.Hennrich, R.Kessler, K.-L.Kratz, G.Lorusso, P.F.Mantica, M.Matos, F.Montes, B.Pfeiffer, M.Portillo, H.Schatz, F.Schertz, L.Schnorrenberger, E.Smith, A.Stolz, W.B.Walters, A.Wohr β decay of nuclei around 90Se: Search for signatures of a N=56 subshell closure relevant to the r process NUCLEAR REACTIONS 9Be(136Xe, X)86As/87As/88As/88Se/89Se/90Se/90Br/91Br/92Br/93Br/91Kr/92Kr/93Kr/94Kr/95Kr/93Rb/94Rb/95Rb/96Rb/97Rb/95Sr/96Sr/97Sr/98Sr/99Sr/97Y/98Y/99Y/100Y/101Y/100Zr/101Zr/102Zr/103Zr, E=120 MeV/nucleon; measured fragment spectra by energy loss and time-of-flight, total kinetic energies (TKE) of 97,98,99Sr fragments in 36+, 37+, 38+ charge states, half-lives by fragment-β correlations. Beta Counting System (BCS) at NSCL. RADIOACTIVITY 87,88As, 88,89,90Se, 90,91,92,93Br, 93,94,95Kr, 95,96,97Rb, 96,97,98,99Sr, 99,100,101Y(β-)[from 9Be(136Xe, X), E=120 MeV/nucleon]; measured Eβ, Eγ, (fragment)β correlations, half-lives. Beta Counting System (BCS) at NSCL and SEGA array. Maximum likelihood and least-squares analyses for half-lives. Comparison of measured half-lives with QRPA calculations used in r process, and with previous measurements. Role of g9/2 proton and h11/2 neutron intruders. No evidence of N=56 subshell closure in 90Se. Relevance to r-process nuclei.
doi: 10.1103/PhysRevC.85.035807
2012RA10 Phys.Rev. C 85, 034326 (2012) M.M.Rajabali, R.Grzywacz, S.N.Liddick, C.Mazzocchi, J.C.Batchelder, T.Baumann, C.R.Bingham, I.G.Darby, T.N.Ginter, S.V.Ilyushkin, M.Karny, W.Krolas, P.F.Mantica, K.Miernik, M.Pfutzner, K.P.Rykaczewski, D.Weisshaar, J.A.Winger β decay of 71, 73Co: Probing single-particle states approaching doubly magic 78Ni RADIOACTIVITY 71,73Co(β-)[from 9Be(86Kr, X), E=140 MeV/nucleon]; measured Eγ, Iγ, Eβ, Iβ, γγ-, βγ-, (implant ions)βγ-coin, half-lives, β-delayed neutron probability. SeGA array. 71,73Ni; deduced levels, J, π, logft values, isomer, three-particle cluster states. Comparisons with shell-model calculations, and with 69Co to 69Ni decay scheme. NUCLEAR STRUCTURE 69,71,73,75,77Ni; calculated levels, J, π, and configuration amplitudes using shell model with NR78 interaction. Three-nucleon/hole cluster effect.
doi: 10.1103/PhysRevC.85.034326
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
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
2011BE34 Phys.Rev. C 84, 041303 (2011) A.D.Becerril, G.Lorusso, A.M.Amthor, T.Baumann, D.Bazin, J.S.Berryman, B.A.Brown, H.L.Crawford, A.Estrade, A.Gade, T.Ginter, C.J.Guess, M.Hausmann, G.W.Hitt, P.F.Mantica, M.Matos, R.Meharchand, K.Minamisono, F.Montes, G.Perdikakis, J.Pereira, M.Portillo, H.Schatz, K.Smith, J.Stoker, A.Stolz, R.G.T.Zegers High-spin μs isomeric states in 96Ag NUCLEAR REACTIONS 9Be(112Sn, X), E=120 MeV/nucleon; measured Eγ, Iγ, γγ-, (fragment)γγ-coin, isomer T1/2. 96Ag; deduced levels, J, π. A1900 Fragment Separator and SeGA array at NSCL. Comparison with shell-model calculations.
doi: 10.1103/PhysRevC.84.041303
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
2011LO09 Phys.Lett. B 699, 141 (2011) G.Lorusso, A.Becerril, A.Amthor, T.Baumann, D.Bazin, J.S.Berryman, B.A.Brown, R.H.Cyburt, H.L.Crawford, A.Estrade, A.Gade, T.Ginter, C.J.Guess, M.Hausmann, G.W.Hitt, P.F.Mantica, M.Matos, R.Meharchand, K.Minamisono, F.Montes, G.Perdikakis, J.Pereira, M.Portillo, H.Schatz, K.Smith, J.Stoker, A.Stolz, R.G.T.Zegers Half-lives of ground and isomeric states in 97Cd and the astrophysical origin of 96Ru RADIOACTIVITY 97Cd(β+), (β+p) [from 9Be(112Sn, X), E=120 MeV/nucleon]; measured proton spectra, Eγ, Iγ; deduced evidence for a high spin isomer (25/2+), T1/2, level energies, J, π. Comparison with nuclear shell model and astrophysical overproduction factors calculations.
doi: 10.1016/j.physletb.2011.03.043
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
2011PO09 Phys.Rev. C 83, 061303 (2011) M.Pomorski, M.Pfutzner, W.Dominik, R.Grzywacz, T.Baumann, J.S.Berryman, H.Czyrkowski, R.Dabrowski, T.Ginter, J.Johnson, G.Kaminski, A.Kuzniak, N.Larson, S.N.Liddick, M.Madurga, C.Mazzocchi, S.Mianowski, K.Miernik, D.Miller, S.Paulauskas, J.Pereira, K.P.Rykaczewski, A.Stolz, S.Suchyta First observation of two-proton radioactivity in 48Ni RADIOACTIVITY 48Ni(2p), (β+p)[from Ni(58Ni, X), E=160 MeV/nucleon]; measured E(p), I(p), time-of-flight using optical time-projection chamber (OPTC), half-life; deduced branching ratios for the two-proton and delayed-proton decay modes. 46Fe(β+p); measured E(p), I(p).
doi: 10.1103/PhysRevC.83.061303
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
2010FR07 J.Phys.:Conf.Ser. 205, 012043 (2010) C.Fransen, A.Dewald, T.Baumann, D.Bazin, A.Blazhev, B.A.Brown, A.Chester, A.Gade, T.Glasmacher, P.T.Greenlees, M.Hackstein, S.Harissopulos, U.Jakobsson, J.Jolie, P.M.Jones, R.Julin, S.Juutinen, S.Ketelhut, T.Konstaninopoulos, A.Lagoyannis, M.Leino, P.Nieminen, M.Nyman, P.Petkov, P.Peura, T.Pissulla, P.Rahkila, W.Rother, P .Ruotsalainen, J.Saren, C.Scholey, J.Sorri, K.Starosta, A.Stolz, J.Uusitalo, P.Voss, D.Weisshaar New developments on the recoil distance doppler-shift method
doi: 10.1088/1742-6596/205/1/012043
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
2009TA05 Phys.Rev.Lett. 102, 142501 (2009) O.B.Tarasov, D.J.Morrissey, A.M.Amthor, T.Baumann, D.Bazin, A.Gade, T.N.Ginter, M.Hausmann, N.Inabe, T.Kubo, A.Nettleton, J.Pereira, M.Portillo, B.M.Sherrill, A.Stolz, M.Thoennessen Evidence for a Change in the Nuclear Mass Surface with the Discovery of the Most Neutron-Rich Nuclei with 17 ≤ Z ≤ 25 NUCLEAR REACTIONS 9Be(76Ge, X)50Cl/53Ar/55K/56K/57Ca/58Ca/59Sc/60Sc/61Sc/62Ti/63Ti/65V/66V/68Cr/70Mn/52Ar, E=132 MeV/nucleon; measured cross sections.
doi: 10.1103/PhysRevLett.102.142501
2009TA24 Phys.Rev. C 80, 034609 (2009) O.B.Tarasov, M.Portillo, A.M.Amthor, T.Baumann, D.Bazin, A.Gade, T.N.Ginter, M.Hausmann, N.Inabe, T.Kubo, D.J.Morrissey, A.Nettleton, J.Pereira, B.M.Sherrill, A.Stolz, M.Thoennessen Production of very neutron-rich nuclei with a 76Ge beam NUCLEAR REACTIONS 9Be, W(76Ge, X)50Cl/53Ar/55K/56K/57Ca/58Ca/59Sc/60Sc/61Sc/62Ti/63Ti/65V/66V/68Cr/70Mn/52Ar, E=132 MeV/nucleon; measured fragment yields, production σ for A=33-74, Z=13-29 nuclides, longitudinal momentum distributions for Z=17-25 nuclides, time-of-flight. Comparison with various model calculations.
doi: 10.1103/PhysRevC.80.034609
2008BA53 Phys.Rev.Lett. 101, 252501 (2008) D.Bazin, F.Montes, A.Becerril, G.Lorusso, A.Amthor, T.Baumann, H.Crawford, A.Estrade, A.Gade, T.Ginter, C.J.Guess, M.Hausmann, G.W.Hitt, P.Mantica, M.Matos, R.Meharchand, K.Minamisono, G.Perdikakis, J.Pereira, J.Pinter, M.Portillo, H.Schatz, K.Smith, J.Stoker, A.Stolz, R.G.T.Zegers Production and β Decay of rp-Process Nuclei 96Cd, 98In, and 100Sn NUCLEAR REACTIONS 9Be(112Sn, X)96Cd/98In/100Sn, E=120 MeV/nucleon; measured cross sections. RADIOACTIVITY 96Cd, 98In, 100Sn; measured decay spectra, half-lives.
doi: 10.1103/PhysRevLett.101.252501
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
2008DE30 Phys.Rev. C 78, 051302 (2008) A.Dewald, K.Starosta, P.Petkov, M.Hackstein, W.Rother, P.Adrich, A.M.Amthor, T.Baumann, D.Bazin, M.Bowen, A.Chester, A.Dunomes, A.Gade, D.Galaviz, T.Glasmacher, T.Ginter, M.Hausmann, J.Jolie, B.Melon, D.Miller, V.Moeller, R.P.Norris, T.Pissulla, M.Portillo, Y.Shimbara, A.Stolz, C.Vaman, P.Voss, D.Weisshaar Collectivity of neutron-rich palladium isotopes and the valence proton symmetry NUCLEAR REACTIONS 9Be(110Pd, 110Pd'), E=66 MeV/nucleon; 9Be(114Pd, 114Pd'), E=69 MeV/nucleon; measured Eγ, Iγ, half-lives using recoil distance doppler shift method. 110,114Pd; deduced levels, J, π, B(E2). 102,104,106,108,112,116Pd, 104,106,108,110,112,114,116,118Cd, 96,98,100,102,104,106,108,110,112,114Ru; systematics of B(E2) values. Coulomb excitation. Comparisons with Interacting Boson Model.
doi: 10.1103/PhysRevC.78.051302
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
2007BA71 Nature(London) 449, 1022 (2007) T.Baumann, A.M.Amthor, D.Bazin, B.A.Brown, C.M.Folden III, A.Gade, T.N.Ginter, M.Hausmann, M.Matos, D.J.Morrissey, M.Portillo, A.Schiller, B.M.Sherrill, A.Stolz, O.B.Tarasov, M.Thoennessen Discovery of 40Mg and 42Al suggests neutron drip-line slant towards heavier isotopes NUCLEAR REACTIONS W(48Ca, X)40Mg/42Al, E=141 MeV/nucleon; measured fragment energies, charge and mass distributions.
doi: 10.1038/nature06213
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
2007ST16 Phys.Rev.Lett. 99, 042503 (2007) K.Starosta, A.Dewald, A.Dunomes, P.Adrich, A.M.Amthor, T.Baumann, D.Bazin, M.Bowen, B.A.Brown, A.Chester, A.Gade, D.Galaviz, T.Glasmacher, T.Ginter, M.Hausmann, M.Horoi, J.Jolie, B.Melon, D.Miller, V.Moeller, R.P.Norris, T.Pissulla, M.Portillo, W.Rother, Y.Shimbara, A.Stolz, C.Vaman, P.Voss, D.Weisshaar, V.Zelevinsky Shape and Structure of N=Z 64Ge: Electromagnetic Transition Rates from the Application of the Recoil Distance Method to a Knockout Reaction NUCLEAR REACTIONS 93Nb(65Ge, n), (63Zn, n), E not given; measured Eγ, Iγ and transition rates using recoil distance method. 64Ge, 62Zn deduced B(E2) and lifetimes.
doi: 10.1103/PhysRevLett.99.042503
2007TA15 Phys.Rev. C 75, 064613 (2007) O.B.Tarasov, T.Baumann, A.M.Amthor, D.Bazin, C.M.Folden III, A.Gade, T.N.Ginter, M.Hausmann, M.Matos, D.J.Morrissey, A.Nettleton, M.Portillo, A.Schiller, B.M.Sherrill, A.Stolz, M.Thoennessen New isotope 44Si and systematics of the production cross sections of the most neutron-rich nuclei NUCLEAR REACTIONS 184W, 9Be(48Ca, X)36Mg/37Mg/38Mg/41Si/42Si/43Si/44Si, E=142 MeV/nucleon; measured production cross sections. Compared results to model calculations.
doi: 10.1103/PhysRevC.75.064613
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
2005CO19 J.Phys.(London) G31, S1629 (2005) D.Cortina-Gil, J.Fernandez-Vazquez, T.Aumann, T.Baumann, J.Benlliure, M.J.G.Borge, L.V.Chulkov, U.Datta Pramanik, C.Forssen, L.M.Fraile, H.Geissel, J.Gerl, F.Hammache, K.Itahashi, R.Janik, B.Jonson, S.Mandal, K.Markenroth, M.Meister, M.Mocko, G.Muenzenberg, T.Ohtsubo, A.Ozawa, Y.Prezado, K.Riisager, H.Scheit, R.Schneider, G.Schrieder, H.Simon, B.Sitar, A.Stolz, P.Strmen, K.Suemmerer, I.Szarka, H.Weick Structure of neutron-rich oxygen isotopes NUCLEAR STRUCTURE 21,23O; analyzed longitudinal momentum distributions, related data following one-neutron removal. 23O deduced ground-state J, π, configuration.
doi: 10.1088/0954-3899/31/10/045
2005CO24 Eur.Phys.J. A 25, Supplement 1, 343 (2005) D.Cortina-Gil, J.Fernandez-Vazquez, T.Aumann, T.Baumann, J.Benlliure, M.J.G.Borge, L.V.Chulkov, U.Datta Pramanik, C.Forssen, L.M.Fraile, H.Geissel, J.Gerl, F.Hammache, K.Itahashi, R.Janik, B.Jonson, S.Mandal, K.Markenroth, M.Meister, M.Mocko, G.Munzenberg, T.Ohtsubo, A.Ozawa, Y.Prezado, V.Pribora, K.Riisager, H.Scheit, R.Schneider, G.Schrieder, H.Simon, B.Sitar, A.Stolz, P.Strmen, K.Summerer, I.Szarka, H.Weick One-neutron knockout of 23O NUCLEAR REACTIONS C(23O, 22OX), E=938 MeV/nucleon; measured longitudinal momentum distributions, one-neutron removal σ. 23O deduced ground-state J, π, configuration.
doi: 10.1140/epjad/i2005-06-149-2
2005HE08 Nucl.Phys. A750, 175 (2005) P.Heckman, B.B.Back, T.Baumann, M.P.Carpenter, I.Dioszegi, D.J.Hofman, T.L.Khoo, S.Mitsuoka, V.Nanal, T.Pennington, J.P.Seitz, M.Thoennessen, E.Tryggestad, R.L.Varner Temperature and spin dependence of the giant dipole resonance width NUCLEAR REACTIONS 100Mo(17O, xnyp), E=78.8 MeV; 100Mo(18O, xnyp), E=95.0 MeV; measured Eγ, Iγ, (evaporation residue)γ-coin. 117,118Sn deduced GDR widths, temperature and spin dependence features. Comparison with model predictions.
doi: 10.1016/j.nuclphysa.2004.12.065
2005SC20 Phys.Rev. C 72, 037601 (2005) A.Schiller, T.Baumann, J.Dietrich, S.Kaiser, W.Peters, M.Thoennessen Search for particle-bound 26O and 28F in p-stripping reactions NUCLEAR REACTIONS C(27F, X), (29Ne, X), E ≈ 90 MeV/nucleon; measured fragment yields, production σ upper limits; deduced no evidence for 26O, 28F.
doi: 10.1103/PhysRevC.72.037601
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
2004CO11 Phys.Rev.Lett. 93, 062501 (2004) D.Cortina-Gil, J.Fernandez-Vazquez, T.Aumann, T.Baumann, J.Benlliure, M.J.G.Borge, L.V.Chulkov, U.Datta Pramanik, C.Forssen, L.M.Fraile, H.Geissel, J.Gerl, F.Hammache, K.Itahashi, R.Janik, B.Jonson, S.Mandal, K.Markenroth, M.Meister, M.Mocko, G.Munzenberg, T.Ohtsubo, A.Ozawa, Y.Prezado, V.Pribora, K.Riisager, H.Scheit, R.Schneider, G.Schrieder, H.Simon, B.Sitar, A.Stolz, P.Strmen, K.Summerer, I.Szarka, H.Weick Shell Structure of the Near-Dripline Nucleus 23O NUCLEAR REACTIONS C(23O, 22OX), E=938 MeV/nucleon; measured one-neutron removal σ, Eγ, Iγ, (particle)γ-coin, longitudinal momentum distribution. 23O deduced ground-state J, π. 22O deduced levels, J, π. C(19O, X), (20O, X), (21O, X), (22O, X), E ≈ 935 MeV/nucleon; measured one-neutron removal σ.
doi: 10.1103/PhysRevLett.93.062501
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
2003CO06 Nucl.Phys. A720, 3 (2003) D.Cortina-Gil, J.Fernandez-Vazquez, F.Attallah, T.Baumann, J.Benlliure, M.J.G.Borge, L.Chulkov, C.Forssen, L.M.Fraile, H.Geissel, J.Gerl, K.Itahashi, R.Janik, B.Jonson, S.Karlsson, H.Lenske, S.Mandal, K.Markenroth, M.Meister, M.Mocko, G.Munzenberg, T.Ohtsubo, A.Ozawa, Yu.Parfenova, V.Pribora, A.Richter, K.Riisager, R.Schneider, H.Scheit, G.Schrieder, N.Shulgina, H.Simon, B.Sitar, A.Stolz, P.Strmen, K.Summerer, I.Szarka, S.Wan, H.Weick, M.V.Zhukov Nuclear and Coulomb breakup of 8B NUCLEAR REACTIONS C, Pb(8B, p7Be), E=936 MeV/nucleon; measured fragments longitudinal momentum distributions, one-proton removal σ, Eγ, Iγ. 7Be deduced transition. 8B deduced core-excited component of ground state. Comparisons with model predictions.
doi: 10.1016/S0375-9474(03)00671-7
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
2003ME16 Nucl.Phys. A718, 431c (2003) M.Meister, D.Cortina-Gil, J.Fernandez-Vazquez, K.Markenroth, F.Attallah, T.Baumann, J.Benlliure, M.J.G.Borge, L.V.Chulkov, U.Datta Pramanik, C.Forssen, L.M.Fraile, H.Geissel, J.Gerl, F.Hammache, K.Itahashi, R.Janik, B.Jonson, S.Karlsson, H.Lenske, S.Mandal, M.Mocko, G.Munzenberg, T.Ohtsubo, A.Ozawa, Y.Parfenova, V.Pribora, K.Riisager, H.Scheit, R.Schneider, K.Schmidt, G.Schrieder, H.Simon, B.Sitar, A.Stolz, P.Strmen, K.Summerer, I.Szarka, S.Wan, H.Weick, M.Zhukov High-energy breakup of 8B NUCLEAR REACTIONS C, Pb(8B, p7Be), E=936 MeV/nucleon; measured one-proton removal σ, fragments longitudinal momentum distributions, Eγ, Iγ. 8B deduced core-excited component, astrophysical S-factor.
doi: 10.1016/S0375-9474(03)00822-4
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
2003TR05 Phys.Rev. C 67, 064309 (2003) E.Tryggestad, T.Baumann, P.Heckman, M.Thoennessen, T.Aumann, D.Bazin, Y.Blumenfeld, J.R.Beene, T.A.Lewis, D.C.Radford, D.Shapira, R.L.Varner, M.Chartier, M.L.Halbert, J.F.Liang Low-lying E1 strength in 20O NUCLEAR REACTIONS 208Pb(18O, 18O'), (20O, 20O'), E=100 MeV/nucleon; measured Eγ, Iγ, (particle)γ-coin following projectile Coulomb excitation. 18,20O deduced levels, J, π, B(E1). Comparison with model predictions.
doi: 10.1103/PhysRevC.67.064309
2002BA61 Nucl.Phys. A701, 282c (2002) T.Baumann, M.J.Chromik, R.R.C.Clement, C.Freigang, P.Heckman, J.P.Seitz, B.M.Sherrill, M.Thoennessen, E.J.Tryggestad Stopping Energetic Beams in Gas
doi: 10.1016/S0375-9474(01)01599-8
2002CO04 Phys.Lett. 529B, 36 (2002) D.Cortina-Gil, K.Markenroth, F.Attallah, T.Baumann, J.Benlliure, M.J.G.Borge, L.V.Chulkov, U.D.Pramanik, J.Fernandez-Vazquez, C.Forssen, L.M.Fraile, H.Geissel, J.Gerl, F.Hammache, K.Itahashi, R.Janik, B.Jonson, S.Karlsson, H.Lenske, S.Mandal, M.Meister, M.Mocko, G.Munzenberg, T.Ohtsubo, A.Ozawa, Y.Parfenova, V.Pribora, K.Riisager, H.Scheit, R.Schneider, K.Schmidt, G.Schrieder, H.Simon, B.Sitar, A.Stolz, P.Strmen, K.Summerer, I.Szarka, S.Wan, H.Weick, M.Zhukov Experimental Evidence for the 8B Ground State Configuration NUCLEAR REACTIONS C(8B, 7BeX), E=936 MeV/nucleon; measured Eγ, fragments parallel momentum distribution, (fragment)γ-coin; deduced fragment excitation. 8B deduced ground state configuration. Fragment separator, comparison with model predictions.
doi: 10.1016/S0370-2693(02)01245-5
Back to query form [Next] |