NSR Query Results
Output year order : Descending NSR database version of April 11, 2024. Search: Author = J.M.Elson Found 45 matches. 2023CH46 Phys.Rev.Lett. 131, 172501 (2023) R.J.Charity, J.Wylie, S.M.Wang, T.B.Webb, K.W.Brown, G.Cerizza, Z.Chajecki, J.M.Elson, J.Estee, D.E.M.Hoff, S.A.Kuvin, W.G.Lynch, J.Manfredi, N.Michel, D.G.McNeel, P.Morfouace, W.Nazarewicz, C.D.Pruitt, C.Santamaria, S.Sweany, J.Smith, L.G.Sobotka, M.B.Tsang, A.H.Wuosmaa Strong Evidence for 9N and the Limits of Existence of Atomic Nuclei RADIOACTIVITY 9N(p), 8C, 6Be(2p) [from 9Be(13O, X)9N, E=69.5 MeV/nucleon]; measured decay products, Ep, Ip. 9N, 8C; deduced invariant-mass spectra, level diagrams, possible single resonancelike peak in the spectrum. R-matrix fits, comparison with the theoretical predictions of an open-quantum-system approach. The National Superconducting Cyclotron Laboratory at Michigan State University.
doi: 10.1103/PhysRevLett.131.172501
2023DR02 Phys.Rev. C 107, L061303 (2023) N.Dronchi, J.Berkman, R.J.Charity, J.M.Elson, L.G.Sobotka, A.G.Thomas, A.Saastamoinen, M.Barbui, J.Bishop, C.E.Parker, B.T.Roeder, G.V.Rogachev, D.P.Scriven, S.T.Marley, R.M.Shaffer Search for an s-wave resonance in 7Li just above the proton-decay threshold NUCLEAR REACTIONS 2H(6He, n)7Li, E=6.4 MeV/nucleon; measured charged particles from 7Li excited states decay; deduced invariant mass, resonances. 6,7Li, 8Be; deduced energies and widths of the states. Charged particles identified with array of 4 Si-Si telescopes from HIRA array. Secondary beam produced from 7Li(d, 3He)6He reaction at K150 cyclotron (Texas AM University Cyclotron Institute).
doi: 10.1103/PhysRevC.107.L061303
2022GI04 Phys.Rev. C 105, 044321 (2022) S.A.Gillespie, K.W.Brown, R.J.Charity, L.G.Sobotka, A.K.Anthony, J.Barney, A.Bonaccorso, B.A.Brown, J.Crosby, D.Dell'Aquila, J.Elson, J.Estee, A.Gade, M.Ghazali, G.Jhang, Y.Jin, B.Longfellow, W.G.Lynch, J.Pereira, M.Spieker, S.Sweany, F.C.E.Teh, A.Thomas, M.B.Tsang, C.Y.Tsang, D.Weisshaar, H.Y.Wu, K.Zhu Proton decay spectroscopy of 28S and 30Cl NUCLEAR REACTIONS 9Be(29S, n), (31Ar, p), E=150 MeV/nucleon; measured reaction products, Ep, Ip, Eγ, Iγ, (particle)p-coin, pγ-coin; deduced invariant mass, momentum distribution. Setup consisting of S800 spectrograph, Si-CsI(Tl) DSSD array of 128 concentric rings and 128 annular sectors, CAESAR CsI(Na) photon detection array, BC-400-type scintillation fiber detector at A1900 fragment separator (NSCL). RADIOACTIVITY 28S(p), (2p) [from 9Be(29S, n), E=150 MeV/nucleon]; 30Cl(p), (2p) [from 9Be(29S, n), E=150 MeV/nucleon]; measured Ep, Ip, Eγ, Iγ, pγ-coin; deduced total decay kinetic energy, decay energy spectrum. 30Cl; deduced levels, J, π, S(p). 28S; deduced levels, J, π, spectroscopic factors. Comparison to previous experimental results and shell model calculations.
doi: 10.1103/PhysRevC.105.044321
2022ST07 Eur.Phys.J. A 58, 223 (2022) A.I.Stefanescu, V.Panin, L.Trache, T.Motobayashi, H.Otsu, A.Saastamoinen, T.Uesaka, L.Stuhl, J.Tanaka, D.Tudor, I.C.Stefanescu, A.E.Spiridon, K.Yoneda, H.Baba, M.Kurokawa, Y.Togano, Z.Halasz, M.Sasano, S.Ota, Y.Kubota, D.S.Ahn, T.Kobayashi, Z.Elekes, N.Fukuda, H.Takeda, D.Kim, E.Takada, H.Suzuki, K.Yoshida, Y.Shimizu, H.N.Liu, Y.L.Sun, T.Isobe, J.Gibelin, P.J.Li, J.Zenihiro, F.M.Marques, M.N.Harakeh, G.G.Kiss, A.Kurihara, M.Yasuda, T.Nakamura, S.Park, Z.Yang, T.Harada, M.Nishimura, H.Sato, I.S.Hahn, K.Y.Chae, J.M.Elson, L.G.Sobotka, C.A.Bertulani Silicon tracker array for RIB experiments at SAMURAI
doi: 10.1140/epja/s10050-022-00873-w
2021CH19 Phys.Rev.Lett. 126, 132501 (2021) R.J.Charity, T.B.Webb, J.M.Elson, D.E.M.Hoff, C.D.Pruitt, L.G.Sobotka, K.W.Brown, G.Cerizza, J.Estee, W.G.Lynch, J.Manfredi, P.Morfouace, C.Santamaria, S.Sweany, C.Y.Tsang, M.B.Tsang, Y.Zhang, K.Zhu, S.A.Kuvin, D.McNeel, J.Smith, A.H.Wuosmaa, Z.Chajecki Observation of the Exotic Isotope 13F Located Four Neutrons beyond the Proton Drip Line NUCLEAR REACTIONS 9Be(13O, 13F), E=69.5 MeV/nucleon; measured reaction products, Ep, Ip. 13F, 12O, 11N, 10C, 9B, 8Be; deduced 13F resonance parameters, energy levels, J, π, level decays via initial proton emissions.
doi: 10.1103/PhysRevLett.126.132501
2021CH45 Phys.Rev. C 104, 024325 (2021) R.J.Charity, T.B.Webb, J.M.Elson, D.E.M.Hoff, C.D.Pruitt, L.G.Sobotka, P.Navratil, G.Hupin, K.Kravvaris, S.Quaglioni, K.W.Brown, G.Cerizza, J.Estee, W.G.Lynch, J.Manfredi, P.Morfouace, C.Santamaria, S.Sweany, M.B.Tsang, T.Tsang, K.Zhu, S.A.Kuvin, D.McNeel, J.Smith, A.H.Wuosmaa, Z.Chajecki Using spin alignment of inelastically excited nuclei in fast beams to assign spins: The spectroscopy of 13O as a test case NUCLEAR REACTIONS 9Be(13O, 13O'), E=69.5 MeV/nucleon, [secondary 13O beam from 9Be(16O, X), E=150 MeV/nucleon primary reaction, followed by separation of fragments using A1900 fragment separator at NSCL-MSU facility]; measured charged particles, angular distribution of protons in 1p- and 2p-decays of the excited states of 13O using High Resolution Array (HiRA) of 14 ΔE-E (Si-CsI(Tl)) telescopes; deduced invariant-mass distributions of the p+12N and 2p+11C events from the decay of 13O excited states. 13O; deduced levels, resonances, J, π, Γ, E(p), possibly rotational bands built on deformed cluster configurations predicted by antisymmetrized molecular dynamics (AMD) calculations. Comparison of p(θ) data with DWBA using FRESCO code, and level structure of 13O with ab initio no-core shell model with continuum (NCSMC), and with the structure of 13B mirror nucleus.
doi: 10.1103/PhysRevC.104.024325
2021JI15 Phys.Rev.Lett. 127, 262502 (2021) Y.Jin, C.Y.Niu, K.W.Brown, Z.H.Li, H.Hua, A.K.Anthony, J.Barney, R.J.Charity, J.Crosby, D.Dell'Aquila, J.M.Elson, J.Estee, M.Ghazali, G.Jhang, J.G.Li, W.G.Lynch, N.Michel, L.G.Sobotka, S.Sweany, F.C.E.Teh, A.Thomas, C.Y.Tsang, M.B.Tsang, S.M.Wang, H.Y.Wu, C.X.Yuan, K.Zhu First Observation of the Four-Proton Unbound Nucleus 18Mg RADIOACTIVITY 18Mg(14O), (2p), (4p) [from 9Be(20Mg, X)18Mg, E=170 MeV/nucleon]; measured decay products, Ep, Ip, 18Mg, 16Ne; deduced decay energy spectra, level scheme, J, π, resonance parameters. Comparison with the Gamow shell model (GSM) calculations.
doi: 10.1103/PhysRevLett.127.262502
2021MA55 Phys.Rev. C 104, 024608 (2021) J.Manfredi, J.Lee, A.M.Rogers, M.B.Tsang, W.G.Lynch, C.Anderson, J.Barney, K.W.Brown, B.Brophy, G.Cerizza, Z.Chajecki, G.Chen, J.Elson, J.Estee, H.Iwasaki, C.Langer, Z.Li, C.Loelius, C.Y.Niu, C.Pruitt, H.Setiawan, R.Showalter, K.Smith, L.G.Sobotka, S.Sweany, S.Tangwancharoen, J.R.Winkelbauer, Z.Xiao, Z.Xu Quenching of single-particle strengths in direct reactions NUCLEAR REACTIONS 1H(46Ar, d)45Ar, (34Ar, d)33Ar, E=70 MeV/nucleon; measured heavy reaction residues, outgoing E(d), I(d), (reaction residues)δ-coin, differential σ(θ) using High Resolution Array (HiRA) for deuterons and S800 spectrograph for residue products at NSCL-MSU facility, CH2 target; deduced spectroscopic factors and reduction factors for the final states, asymmetry dependence of reduction factors. Comparison with results of previous measurements, and theoretical calculations using large-basis shell model (LBSM). Relevance to single-nucleon knockout reactions.
doi: 10.1103/PhysRevC.104.024608
2020PR10 Phys.Rev. C 102, 034601 (2020) C.D.Pruitt, R.J.Charity, L.G.Sobotka, J.M.Elson, D.E.M.Hoff, K.W.Brown, M.C.Atkinson, W.H.Dickhoff, H.Y.Lee, M.Devlin, N.Fotiades, S.Mosby Isotopically resolved neutron total cross sections at intermediate energies NUCLEAR REACTIONS 16,18O, 58,64Ni, 103Rh, 112,124Sn(n, X), E=3-450 MeV; measured E(n), I(n), σ(E) by time-of-flight using wave-form-digitizer technology and BC-400 fast plastic scintillators at the WNR facility of the Los Alamos Neutron Science Center; deduced spectroscopic factors for valence proton and neutron levels through a dispersive optical model (DOM) analyses of σ(θ) data. 16,18O, 58,64Ni, 103Rh, 112,124Sn(p, p), (polarized p, p), (n, n), E=10-200 MeV; analyzed experimental σ(E), σ(θ, E), Ay(θ, E) data in literature; deduced dispersive optical model (DOM) parameters, charge radii and binding energies. Comparison with previous experimental measurements of σ(E) using analog methods.
doi: 10.1103/PhysRevC.102.034601
2020WE08 Phys.Rev. C 101, 044317 (2020) T.B.Webb, R.J.Charity, J.M.Elson, D.E.M.Hoff, C.D.Pruitt, L.G.Sobotka, K.W.Brown, J.Barney, G.Cerizza, J.Estee, W.G.Lynch, J.Manfredi, P.Morfouace, C.Santamaria, S.Sweany, M.B.Tsang, T.Tsang, Y.Zhang, K.Zhu, S.A.Kuvin, D.McNeel, J.Smith, A.H.Wuosmaa, Z.Chajecki Invariant-mass spectrum of 11O NUCLEAR REACTIONS 9Be(13O, 11O), E=69.5 MeV/nucleon; measured Ep, Ip, and invariant mass spectrum of 11O fragments from (9C)2p-coin events with two-proton emission from two states in 11O, longitudinal-momentum distributions using the HiRA array at NSCL-MSU facility. 11O; deduced levels, S(2p) for ground state.
doi: 10.1103/PhysRevC.101.044317
2019CH16 Phys.Rev. C 99, 044304 (2019) R.J.Charity, K.W.Brown, J.Elson, W.Reviol, L.G.Sobotka, W.W.Buhro, Z.Chajecki, W.G.Lynch, J.Manfredi, R.Shane, R.H.Showalter, M.B.Tsang, D.Weisshaar, J.Winkelbauer, S.Bedoor, D.G.McNeel, A.H.Wuosmaa Invariant-mass spectroscopy of 18Ne 16O, and 10C excited states formed in neutron-transfer reactions NUCLEAR REACTIONS 9Be(17Ne, X), E=58.2 MeV/nucleon;9Be(15O, X), E=48.1 MeV/nucleon, [secondary 17Ne and 15O beams from 9Be(20Ne, X), E=170 MeV primary reaction]; 9Be(9C, X), E=64.6 MeV/nucleon, [secondary 9C beam from 9Be(16O, X), E=150 MeV primary reaction]; measured charged particle spectra, σ(θ), Eγ, Iγ, γ(θ), (particle)γ-coin, excitation-energy spectra with invariant-mass method, center-of-mass velocity distributions, invariant-mass spectroscopy for neutron transfer reactions using the HiRA ΔE-E telescope array for charged particle detection and the CAESAR array for γ detection at NSCL-MSU facility. 10C, 16O, 18Ne; deduced levels, J, π, widths, branching ratios of high-lying states, and IMM fits for A=18 Comparison with theoretical predictions, and with previous experimental results.
doi: 10.1103/PhysRevC.99.044304
2019CH50 Phys.Rev. C 100, 064305 (2019) R.J.Charity, K.W.Brown, J.Okolowicz, M.Ploszajczak, J.M.Elson, W.Reviol, L.G.Sobotka, W.W.Buhro, Z.Chajecki, W.G.Lynch, J.Manfredi, R.Shane, R.H.Showalter, M.B.Tsang, D.Weisshaar, J.R.Winkelbauer, S.Bedoor, A.H.Wuosmaa Invariant-mass spectroscopy of 14O excited states NUCLEAR REACTIONS 9Be(15O, 14O), E=52.1 MeV/nucleon, [secondary 15O beam from 9Be(20Ne, X)15O/17Ne, E=150 MeV/nucleon]; measured reaction products, Eγ, Iγ, (particle)γ-coin using HiRA array for particle detection and CAESAR array for γ rays at the NSCL-MSU facility. 14O; deduced levels, resonances, Jπ, Γ, cross sections and branching ratios for different one-proton and 2-proton emitting channels from excited states in 14O, configuration mixing in resonance spectra. 13N, 12C; deduced levels from 1-proton and 2-proton emissions from excited states in 14O. Comparison with shell model calculations embedded in the continuum (SMEC), treating bound and scattering states in a unified model.
doi: 10.1103/PhysRevC.100.064305
2019WE03 Phys.Rev.Lett. 122, 122501 (2019) T.B.Webb, S.M.Wang, K.W.Brown, R.J.Charity, J.M.Elson, J.Barney, G.Cerizza, Z.Chajecki, J.Estee, D.E.M.Hoff, S.A.Kuvin, W.G.Lynch, J.Manfredi, D.McNeel, P.Morfouace, W.Nazarewicz, C.D.Pruitt, C.Santamaria, J.Smith, L.G.Sobotka, S.Sweany, C.Y.Tsang, M.B.Tsang, A.H.Wuosmaa, Y.Zhang, K.Zhu first Observation of Unbound 11O, the Mirror of the Halo Nucleus 11Li RADIOACTIVITY 11,12O(2p) [from 9Be(13O, xn)11O/12O, E<69.5 MeV/nucleon]; measured decay products, Ep, Ip; deduced an invariant-mass spectrum, resonant state widths, two-nucleon density distributions. Comparison with theoretical calculations.
doi: 10.1103/PhysRevLett.122.122501
2019WE11 Phys.Rev. C 100, 024306 (2019); Erratum Phys.Rev. C 102, 019904 (2020) T.B.Webb, R.J.Charity, J.M.Elson, D.E.M.Hoff, C.D.Pruitt, L.G.Sobotka, K.W.Brown, J.Barney, G.Cerizza, J.Estee, G.Jhang, W.G.Lynch, J.Manfredi, P.Morfouace, C.Santamaria, S.Sweany, M.B.Tsang, T.Tsang, S.M.Wang, Y.Zhang, K.Zhu, S.A.Kuvin, D.McNeel, J.Smith, A.H.Wuosmaa, Z.Chajecki Particle decays of levels in 11, 12N and 12O investigated with the invariant-mass method NUCLEAR REACTIONS 9Be(13O, 12O), (13O, 12N), (13O, 11N), E=69.5 MeV/nucleon, [secondary 13O beam from 9Be(16O, 12O), E=150 MeV/nucleon primary reaction, followed by separation of ion beam using A1900 magnetic separator]; measured charged particles, (particle)(particle)-coin, cross sections using the High Resolution Array (HiRA) of 14 ΔE-E Si-CsI(Tl) telescopes at NSCL, MSU facility. 12,13O, 12N; deduced levels, J, π, 2p-, 3p-, 1p- and 2p+α-decay branches, p+10C, p+11C, 2p+10C invariance mass spectra, widths, total decay energy spectrum and invariant-mass spectra from coincident 4p+2α events. Comparison with Gamow coupled-channel (GCC) calculations, and with previous experimental data in the ENSDF database.
doi: 10.1103/PhysRevC.100.024306
2018CH25 Phys.Rev. C 97, 054318 (2018) R.J.Charity, K.W.Brown, J.Okolowicz, M.Ploszajczak, J.M.Elson, W.Reviol, L.G.Sobotka, W.W.Buhro, Z.Chajecki, W.G.Lynch, J.Manfredi, R.Shane, R.H.Showalter, M.B.Tsang, D.Weisshaar, J.R.Winkelbauer, S.Bedoor, A.H.Wuosmaa Spin alignment following inelastic scattering of 17Ne, lifetime of 16F, and its constraint on the continuum coupling strength NUCLEAR REACTIONS 9Be(17Ne, 17Ne'), E=62.9 MeV/nucleon [17Ne secondary beam from 150 MeV/nucleon 16O primary beam]; measured reaction products, Ep and Ip(θ) of first and second protons in sequential two-proton decay of the second excited state of Jπ=5/2- in 17Ne using the High Resolution Array (HiRA) at NSCL-MSU. 17Ne; deduced excitation-energy spectra reconstructed from 2p+15O events from excited state of 17Ne, magnetic substate probability distribution, distribution of the relative emission angle between the sequential protons, and spin alignment of 17Ne excited state. 16F; deduced invariant mass spectra, widths of the first 0-, 1-, 2-, and 3- resonances, and compared with calculations using shell model embedded in the continuum (SMEC). RADIOACTIVITY 16F(p)[from proton decay of excited state in 17Ne]; deduced width of the ground state from magnitude of the final-state interactions between the protons emitted by the excited state of 17Ne. Comparison with previous direct measurement of the width of the ground state.
doi: 10.1103/PhysRevC.97.054318
2018JO01 Phys.Rev. C 97, 024327 (2018) M.D.Jones, A.O.Macchiavelli, M.Wiedeking, L.A.Bernstein, H.L.Crawford, C.M.Campbell, R.M.Clark, M.Cromaz, P.Fallon, I.Y.Lee, M.Salathe, A.Wiens, A.D.Ayangeakaa, D.L.Bleuel, S.Bottoni, M.P.Carpenter, H.M.Davids, J.Elson, A.Gorgen, M.Guttormsen, R.V.F.Janssens, J.E.Kinnison, L.Kirsch, A.C.Larsen, T.Lauritsen, W.Reviol, D.G.Sarantites, S.Siem, A.V.Voinov, S.Zhu Examination of the low-energy enhancement of the γ-ray strength function of 56Fe NUCLEAR REACTIONS 56Fe(p, p'), E=16 MeV; measured Eγ, Iγ, γ(θ) for discrete and continuum γ rays, γ(linear polarization) for primary γ rays, pγγ-coin using GRETINA (Gamma-Ray Energy Tracking In-beam Nuclear Array) for γ detection and Washington University Phoswich Wall for protons; deduced multipolarity of continuum γ rays, γ-ray strength function (γSF) with the model-independent ratio method, low-energy enhancement, identical shapes for γSFs constructed with 2+ and 4+ final states consistent with Brink hypothesis. Comparison with previous experimental results.
doi: 10.1103/PhysRevC.97.024327
2018RE09 Phys.Rev. C 98, 014328 (2018) W.Reviol, D.G.Sarantites, J.M.Elson, J.E.Kinnison, A.Gargano, R.V.F.Janssens, J.M.Allmond, A.D.Ayangeakaa, S.Bottoni, M.P.Carpenter, H.M.David, A.Galindo-Uribarri, N.Itaco, T.Lauritsen, E.Padilla-Rodal, S.Zhu Low-spin structure of the N=82 nucleus 137Cs NUCLEAR REACTIONS 10B(136Xe, 9Be), E=560 MeV; measured Eγ, Iγ, particle spectra, γγ- and (9Be)γ-coin, γ(θ) using Gammasphere array for γ detection and Phoswich Wall array for charged particle detection at ATLAS-ANL. 137Cs; deduced levels, J, π, multipolarities, configurations. Comparison of level spectra with shell-model calculations. Systematics of level energies in N=82 133Sb, 135I, and 137Cs isotones.
doi: 10.1103/PhysRevC.98.014328
2017BR07 Phys.Rev. C 95, 044326 (2017) K.W.Brown, R.J.Charity, J.M.Elson, W.Reviol, L.G.Sobotka, W.W.Buhro, Z.Chajecki, W.G.Lynch, J.Manfredi, R.Shane, R.H.Showalter, M.B.Tsang, D.Weisshaar, J.R.Winkelbauer, S.Bedoor, A.H.Wuosmaa Proton-decaying states in light nuclei and the first observation of 17Na NUCLEAR REACTIONS 9Be(17Ne, 17Na), (17Ne, 17Ne), (17Ne, 16F), E=58 MeV/nucleon, [secondary 17Ne beam from 9Be(20Ne, X), E=170 MeV/nucleon primary reaction at NSCL-MSU accelerator facility]; 9Be(9C, 9C), (9C, 9B), (9C, 8B), E=68 MeV/nucleon, [secondary 9C beam from 9Be(16O, X), E=150 MeV/nucleon primary reaction]; measured charged-particle reaction products using HiRA array of 14 ΔE-E telescopes, and γ rays by CAESAR array of 158 CsI(Na), (particle)γ-coin; analyzed invariant mass spectra, R-matrix fits. 17Na, 17Ne, 16F, 9C, 8,9B; deduced levels, upper limit of mass for 17Na, proton unbound levels, widths, J, π, three-proton decay of 17Na, one- and two-proton decay branches of other nuclei. First identification of unbound 17Na nucleus.
doi: 10.1103/PhysRevC.95.044326
2016RE15 Phys.Rev. C 94, 034309 (2016) W.Reviol, D.G.Sarantites, J.M.Elson, J.E.Kinnison, A.Gargano, S.Bottoni, R.V.F.Janssens, J.M.Allmond, A.D.Ayangeakaa, M.P.Carpenter, H.M.David, A.Galindo-Uribarri, N.Itaco, T.Lauritsen, E.Padilla-Rodal, S.Zhu One-neutron transfer study of 137Xe and systematics of 13/2+1 and 13/2+2 levels in N=83 nuclei NUCLEAR REACTIONS 13C(136Xe, 12C)137Xe, 9Be(136Xe, 8Be)137Xe, E=560 MeV; measured particle spectra, Eγ, Iγ, γ(θ), (particle)γ-, (particle)γγ-coin using Phoswich Wall and Digital Gammasphere arrays at ATLAS-ANL facility. 137Xe; deduced levels, J, π, multipolarity, relative yields. One-neutron transfer reactions. Comparison with systematics of first and second 13/2+ states in N=83 isotones, and with shell-model calculations. 135,137Xe, 137Cs, 139,140Ba, 142Ce; observed γ rays from contaminants.
doi: 10.1103/PhysRevC.94.034309
2015BR11 Phys.Rev. C 92, 034329 (2015) K.W.Brown, R.J.Charity, L.G.Sobotka, L.V.Grigorenko, T.A.Golubkova, S.Bedoor, W.W.Buhro, Z.Chajecki, J.M.Elson, W.G.Lynch, J.Manfredi, D.G.McNeel, W.Reviol, R.Shane, R.H.Showalter, M.B.Tsang, J.R.Winkelbauer, A.H.Wuosmaa Interplay between sequential and prompt two-proton decay from the first excited state of 16Ne NUCLEAR REACTIONS 9Be(17Ne, 16Ne), E=57.6 MeV/nucleon; analyzed results of experimental measurements reported in their 2014Br19 work carried out at NSCL-MSU. 16Ne; analyzed relative energy spectra and few-body correlations of 14O+2p and 13N+3p events; deduced level energies and widths of g.s. and first 2+ state from kinematic analysis of 14O+p+p events, and those of higher levels from analysis of the 13N+p+p+p events. Sequential and diprotonlike decays deduced from correlation pattern reproduced in three-body 14O+p+p calculations. 15F, 14O, 13N; deduced levels, J, π from particle decays of states in 16Ne.
doi: 10.1103/PhysRevC.92.034329
2015CH12 Phys.Rev. C 91, 024610 (2015) R.J.Charity, J.M.Elson, J.Manfredi, R.Shane, L.G.Sobotka, Z.Chajecki, D.Coupland, H.Iwasaki, M.Kilburn, Jenny Lee, W.G.Lynch, A.Sanetullaev, M.B.Tsang, J.Winkelbauer, M.Youngs, S.T.Marley, D.V.Shetty, A.H.Wuosmaa Spin alignment of excited projectiles due to target spin-flip interactions NUCLEAR REACTIONS 9Be(6Li, X), E=36.6 MeV/nucleon; 9Be(7Be, X), E=65.2 MeV/nucleon, [6Li, 7Be secondary beams from 9Be(16O, X), E=150 MeV/nucleon primary reaction]; measured particle spectra, angular distributions of reaction products using HiRA array of ΔE-E telescopes at NSCL-MSU facility; deduced sequential breakup of projectiles, spin alignments, and molecular structure of 9Be.
doi: 10.1103/PhysRevC.91.024610
2014BR15 Phys.Rev. C 90, 027304 (2014) K.W.Brown, W.W.Buhro, R.J.Charity, J.M.Elson, W.Reviol, L.G.Sobotka, Z.Chajecki, W.G.Lynch, J.Manfredi, R.Shane, R.H.Showalter, M.B.Tsang, D.Weisshaar, J.R.Winkelbauer, S.Bedoor, A.H.Wuosmaa Two-proton decay from the isobaric analog state in 8B NUCLEAR REACTIONS 9Be(9C, 8B), E=68 MeV/nucleon, [9C secondary beam from 9Be(16O, X), E=150 MeV/nucleon primary fragmentation reaction]; measured Ep, Ip, 6Li-p-p correlated events from IAS of 8C g.s. in 8B by analyzing complete kinematics of 2p+6Li decay products, gamma decay of IAS in 6Li; deduced isospin-allowed 2p decay between isobaric analog states, three-body energy and angular correlations, branching ratios. Experiments carried out at NSCL-MSU facility using A1900 fragment separator and High Resolution Array of Si-CsI(Tl) telescopes.
doi: 10.1103/PhysRevC.90.027304
2014BR19 Phys.Rev.Lett. 113, 232501 (2014) K.W.Brown, R.J.Charity, L.G.Sobotka, Z.Chajecki, L.V.Grigorenko, I.A.Egorova, Yu.L.Parfenova, M.V.Zhukov, S.Bedoor, W.W.Buhro, J.M.Elson, W.G.Lynch, J.Manfredi, D.G.McNeel, W.Reviol, R.Shane, R.H.Showalter, M.B.Tsang, J.R.Winkelbauer, A.H.Wuosmaa Observation of Long-Range Three-Body Coulomb Effects in the Decay of 16Ne RADIOACTIVITY 16Ne(2p) [from Be(17Ne, X), E=57.6 MeV/nucleon]; measured decay products, Ep, Ip; deduced resonance width limit, correlations between the momenta of the three decay products, dependence on the long-range nature of the Coulomb interaction. Comparison with theoretical calculations, available data.
doi: 10.1103/PhysRevLett.113.232501
2013SO11 Phys.Rev. C 87, 054329 (2013) L.G.Sobotka, W.W.Buhro, R.J.Charity, J.M.Elson, M.F.Jager, J.Manfredi, M.H.Mahzoon, A.M.Mukhamedzhanov, V.Eremenko, M.McCleskey, R.G.Pizzone, B.T.Roeder, A.Spiridon, E.Simmons, L.Trache, M.Kurokawa, P.Navratil Proton decay of excited states in 12N and 13O and the astrophysical 11C(p, γ)12N reaction rate NUCLEAR REACTIONS 9Be(13O, X), E=30.3 MeV/nucleon, [13O secondary beam from 1H(14N, X), E=38 MeV/nucleon primary reaction]; measured particle spectra, E(p), I(p), widths using MARS spectrometer at Texas AM cyclotron facility. Invariant mass method. R-matrix analysis. 11C, 12N, 13O; deduced levels, J, π, one-proton and two-proton decay branching ratios. 11C(p, γ)12N; deduced astrophysical reaction rates and S(E) factors.
doi: 10.1103/PhysRevC.87.054329
2012EG03 Phys.Rev.Lett. 109, 202502 (2012) I.A.Egorova, R.J.Charity, L.V.Grigorenko, Z.Chajecki, D.Coupland, J.M.Elson, T.K.Ghosh, M.E.Howard, H.Iwasaki, M.Kilburn, Jenny Lee, W.G.Lynch, J.Manfredi, S.T.Marley, A.Sanetullaev, R.Shane, D.V.Shetty, L.G.Sobotka, M.B.Tsang, J.Winkelbauer, A.H.Wuosmaa, M.Youngs, M.V.Zhukov Democratic Decay of 6Be Exposed by Correlations NUCLEAR REACTIONS Be(7Be, X)6Be, E=70 MeV/nucleon; measured reaction products, Eα, Iα, Ep, Ip; deduced three-body energy-angular correlations, three-body democratic decay. Comparison with a three-cluster-model calculations.
doi: 10.1103/PhysRevLett.109.202502
2012JA11 Phys.Rev. C 86, 011304 (2012);Erratum Phys.Rev. C 86, 059902 (2012) M.F.Jager, R.J.Charity, J.M.Elson, J.Manfredi, H.Mohammad, L.G.Sobotka, M.McCleskey, R.G.Pizzone, B.T.Roeder, A.Spiridon, E.Simmons, L.Trache, M.Kurokawa Two-proton decay of 12O and its isobaric analog state in 12N NUCLEAR REACTIONS 9Be(13O, 12O), (13O, 12N), [13O secondary beam from 1H(14N, X), E=38 MeV/nucleon primary reaction], E=30.3 MeV/nucleon]; measured excitation energy spectra for p+11C, p+12C, 2p+10C, 2p+10B events. Two proton decay modes of g.s. of 12O and excited states of 12O and 12N. 12O, 12N; deduced levels, J, π, widths, IAS of 12O g.s. in 12N. 10B; deduced level, IAS in 10B from 2p decay of IAS in 12N. 13N; deduced level, J, π. RADIOACTIVITY 12O(2p)[9Be(13O, 12O), E=30.3 MeV/nucleon](2p); measured total excitation energy spectra for decay of g.s. of 12O. ATOMIC MASSES 12O, 12N; analyzed isobaric multiplet mass equation (IMME) for A=12 quintet; deduced mass excesses using the invariant mass method.
doi: 10.1103/PhysRevC.86.011304
2011CH32 Phys.Rev. C 84, 014320 (2011) R.J.Charity, J.M.Elson, J.Manfredi, R.Shane, L.G.Sobotka, B.A.Brown, Z.Chajecki, D.Coupland, H.Iwasaki, M.Kilburn, J.Lee, W.G.Lynch, A.Sanetullaev, M.B.Tsang, J.Winkelbauer, M.Youngs, S.T.Marley, D.V.Shetty, A.H.Wuosmaa, T.K.Ghosh, M.E.Howard Investigations of three-, four-, and five-particle decay channels of levels in light nuclei created using a 9C beam NUCLEAR REACTIONS 9Be(9C, X), E=70 MeV/nucleon, [secondary 9C beam from 9Be(16O, X), E=150 MeV/nucleon primary beam]; measured particle spectra using HiRA array, angular correlations between the particles in particle-decay channels. 8Be, 7,8,9B, 8,10C; deduced levels, width, J, π, isospin, branching ratios, excitation spectra of outgoing particles from many-particle decays of ground and excited states.
doi: 10.1103/PhysRevC.84.014320
2011CH53 Phys.Rev. C 84, 051308 (2011) R.J.Charity, J.M.Elson, J.Manfredi, R.Shane, L.G.Sobotka, Z.Chajecki, D.Coupland, H.Iwasaki, M.Kilburn, J.Lee, W.G.Lynch, A.Sanetullaev, M.B.Tsang, J.Winkelbauer, M.Youngs, S.T.Marley, D.V.Shetty, A.H.Wuosmaa, T.K.Ghosh, M.E.Howard Isobaric multiplet mass equation for A=7 and 8 ATOMIC MASSES 7,8He, 7,8Li, 7,8Be, 7,8B, 8C; analyzed deviations from isobaric multiplet mass equation (IMME) for A=7, T=3/2 quartet and A=8, T=2 quintet; deduced coefficients from quadric, cubic, and quartic fits.
doi: 10.1103/PhysRevC.84.051308
2011RO18 Phys.Rev.Lett. 106, 252503 (2011) A.M.Rogers, M.A.Famiano, W.G.Lynch, M.S.Wallace, F.Amorini, D.Bazin, R.J.Charity, F.Delaunay, R.T.de Souza, J.Elson, A.Gade, D.Galaviz, M.-J.van Goethem, S.Hudan, J.Lee, S.Lobastov, S.Lukyanov, M.Matos, M.Mocko, H.Schatz, D.Shapira, L.G.Sobotka, M.B.Tsang, G.Verde Ground-State Proton Decay of 69Br and Implications for the 68Se Astrophysical Rapid Proton-Capture Process Waiting Point RADIOACTIVITY 69Br(p) [from Be(78Kr, X), E=140 MeV/nucleon]; measured reaction products, proton spectrum. 69Br, 68Se; deduced proton separation energy. Astrophysical implications, comparison with theoretical calculations.
doi: 10.1103/PhysRevLett.106.252503
2011RO55 J.Phys.:Conf.Ser. 312, 042020 (2011) A.M.Rogers, W.G.Lynch, M.A.Famiano, M.S.Wallace, F.Amorini, D.Bazin, R.J.Charity, F.Delaunay, R.T.de Souza, J.Elson, A.Gade, D.Galaviz, S.Hudan, J.Lee, S.Lobostov, S.Lukyanov, M.Matos, M.Mocko, M.B.Tsang, D.Shapira, L.G.Sobotka, G.Verde Ground-state proton decay of 69Br and implications for the rp-process 68Se waiting-point RADIOACTIVITY 69Br(p); measured in-flight Ep, Ip(θ), E(Se), I(Se), (Se)p-coin using HiRA telescopes; deduced p-spectra, proton separation energy, implications for 2p capture of rp process.
doi: 10.1088/1742-6596/312/4/042020
2010CH42 Phys.Rev. C 82, 041304 (2010) R.J.Charity, J.M.Elson, J.Manfredi, R.Shane, L.G.Sobotka, Z.Chajecki, D.Coupland, H.Iwasaki, M.Kilburn, J.Lee, W.G.Lynch, A.Sanetullaev, M.B.Tsang, J.Winkelbauer, M.Youngs, S.T.Marley, D.V.Shetty, A.H.Wuosmaa, T.K.Ghosh, M.E.Howard 2p-2p decay of 8C and isospin-allowed 2p decay of the isobaric-analog state in 8B NUCLEAR REACTIONS 9Be(9C, 8B), [9C beam from 9Be(16O, X) fragmentation], E=70 MeV/nucleon; measured Ep, Ip, 6Li-p-p correlated events from an excited state (IAS of 8C g.s.) in 8B by analyzing complete kinematics of 2p+6Li decay products; deduced 2p decay (isospin-allowed 2p decay between isobaric analog states). 9Be(9C, 8C), [9C beam from 9Be(16O, X) fragmentation], E=70 MeV/nucleon; measured Ep, Ip, 6Be-p-p and α-p-p-p-p correlated events from 8C g.s. by analyzing complete kinematics of 2p+6Be and α+2p+2p events. RADIOACTIVITY 8C(2p); measured Ep, Ip, Eα, Iα, α-p-p-p-p coin, α-p-p coin from the decay of 8C g.s.
doi: 10.1103/PhysRevC.82.041304
2010HE16 Nucl.Phys. A834, 552c (2010) V.Henzl, D.Henzlova, M.Kilburn, G.Verde, D.Brown, A.Chbihi, D.Coupland, J.Elson, M.Famiano, C.Herlitzius, S.Hudan, J.Lee, S.Lukyanov, W.Lynch, A.Rogers, A.Sanetullaev, L.Sobotka, R.T.de Souza, Z.Y.Sun, B.Tsang, M.Wallace, K.Xu, M.Youngs Isospin effects in 40, 48Ca+40, 48Ca collisions NUCLEAR REACTIONS 40Ca(40Ca, 2p), 48Ca(48Ca, 2p), E=80 MeV/nucleon; measured Ep, Ip(θ), pp-coin, Z(particle), A(particle), particle multiplicity, total transverse energy; deduced pp correlation function, emitting source size.
doi: 10.1016/j.nuclphysa.2010.01.088
2010SH03 Nucl.Instrum.Methods Phys.Res. A614, 468 (2010) R.Shane, R.J.Charity, J.M.Elson, L.G.Sobotka, M.Devlin, N.Fotiades, J.M.O'Donnell Total neutron cross-sections for rare isotopes using a digital-signal-processing technique: Case study 48Ca NUCLEAR REACTIONS 40,48Ca(n, X), E=15-300 Mev; measured TOF, En, In; deduced σ.
doi: 10.1016/j.nima.2010.01.005
2009GR07 Phys.Lett. B 677, 30 (2009) L.V.Grigorenko, T.D.Wiser, K.Miernik, R.J.Charity, M.Pfutzner, A.Banu, C.R.Bingham, M.Cwiok, I.G.Darby, W.Dominik, J.M.Elson, T.Ginter, R.Grzywacz, Z.Janas, M.Karny, A.Korgul, S.N.Liddick, K.Mercurio, M.Rajabali, K.Rykaczewski, R.Shane, L.G.Sobotka, A.Stolz, L.Trache, R.E.Tribble, A.H.Wuosmaa, M.V.Zhukov Complete correlation studies of two-proton decays: 6Be and 45Fe NUCLEAR REACTIONS 1H(10B, n), E not given; Ni(58Ni, X)45Fe, E=161 MeV/nucleon; measured Ep, Ip, Eα, Iα, product energy and angular correlation distributions in a kinematically complete experiment. Comparison with three-body cluster model. RADIOACTIVITY 6Be, 45Fe(2p); measured energy and angular correlation distributions.
doi: 10.1016/j.physletb.2009.04.085
2009GR11 Phys.Rev. C 80, 034602 (2009) L.V.Grigorenko, T.D.Wiser, K.Mercurio, R.J.Charity, R.Shane, L.G.Sobotka, J.M.Elson, A.H.Wuosmaa, A.Banu, M.McCleskey, L.Trache, R.E.Tribble, M.V.Zhukov Three-body decay of 6Be NUCLEAR REACTIONS 1H(10B, n)10C, E=15 MeV/nucleon; measured Ep, Ip, Eα, Iα, energy and angular correlation distributions in a kinematically complete experiment. Comparison with three-body cluster model. RADIOACTIVITY 6Be(2p)[from 10C(α)]; measured Ep, Iπ, angular distributions. NUCLEAR STRUCTURE 6Be, 6He; calculated densities and radial properties of ground-state wave functions. Three-body hyperspherical-harmonics cluster model.
doi: 10.1103/PhysRevC.80.034602
2008ME11 Phys.Rev. C 78, 031602 (2008) K.Mercurio, R.J.Charity, R.Shane, L.G.Sobotka, J.M.Elson, M.Famiano, A.H.Wuosmaa, A.Banu, C.Fu, L.Trache, R.E.Tribble, A.M.Mukhamedzhanov Correlated two-proton decay from 10C NUCLEAR REACTIONS Be, C(10C, 10C'), E=10.7 MeV; measured proton spectra, α spectra, αp-, pp-coin from excited states. 10C; deduced levels, correlated 2p decay mode.
doi: 10.1103/PhysRevC.78.031602
2007CH39 Phys.Rev. C 75, 051304 (2007) R.J.Charity, K.Mercurio, L.G.Sobotka, J.M.Elson, M.Famiano, A.Banu, C.Fu, L.Trache, R.E.Tribble Decay of 10C excited states above the 2p + 2α threshold and the contribution from "democratic" two-proton emission NUCLEAR REACTIONS 9Be(10C, 10C), E=10.7 MeV/nucleon; measured Ep, Eα, 2p2α decay of the excited states; 10C; deduced level energies and intrinsic widths for particle unbound states.
doi: 10.1103/PhysRevC.75.051304
2005RE07 Nucl.Instrum.Methods Phys.Res. A541, 478 (2005) W.Reviol, D.G.Sarantites, R.J.Charity, C.J.Chiara, J.Elson, M.Montero, O.L.Pechenaya, S.K.Ryu, L.G.Sobotka "HERCULES": Design, instrumentation, and performance characteristics of a high-efficiency evaporation-residue counter under a lot of elastic scattering for spectroscopic studies with Gammasphere NUCLEAR REACTIONS 126Te(48Ti, xnypzα), E=238 MeV; 142Nd(48Ti, xnypzα), E=230 MeV; measured Eγ, Iγ, γγ-, (particle)γ-coin, evaporation residue energy and angular distribution. Gammasphere, Hercules arrays.
doi: 10.1016/j.nima.2004.12.028
2004SA43 Nucl.Instrum.Methods Phys.Res. A530, 473 (2004) D.G.Sarantites, W.Reviol, C.J.Chiara, R.J.Charity, L.G.Sobotka, M.Devlin, M.Furlotti, O.L.Pechenaya, J.Elson, P.Hausladen, S.Fischer, D.Balamuth, R.M.Clark "Neutron Shell": a high efficiency array of neutron detectors for γ-ray spectroscopic studies with Gammasphere NUCLEAR REACTIONS 28Si(32S, xnyp), E=130 MeV; measured Eγ, En, γγ-, nγ-, (charged particle)nγ-coin, neutron angular distributions. Gammasphere, Microball, "Neutron Shell" arrays.
doi: 10.1016/j.nima.2004.04.243
2000ID01 Phys.Lett. 492B, 245 (2000) E.Ideguchi, B.Cederwall, R.Wyss, T.Back, K.Lagergren, A.Johnson, W.Klamra, J.Cederkall, M.Devlin, J.Elson, D.R.LaFosse, F.Lerma, D.G.Sarantites, V.Tomov, M.Hausmann, A.Jungclaus, D.R.Napoli, M.P.Carpenter, R.V.F.Janssens, F.G.Kondev, T.Lauritsen, C.J.Lister, D.Seweryniak, I.Wiedenhoever, R.M.Clark, P.Fallon, I.Y.Lee, A.O.Macchiavelli, R.W.Macleod Superdeformation in 91Tc NUCLEAR REACTIONS 58Ni(40Ca, 3pα), E=185 MeV; measured Eγ, Iγ, γγ-, (charged particle)γ-, (neutron)γ-, (recoil)γ-coin. 91Tc deduced high-spin levels, superdeformed band, transition quadrupole moment, configurations. Gammasphere, Microball arrays, cranked mean-field calculations. Comparisons with other sperdeformed nuclides.
doi: 10.1016/S0370-2693(00)01114-X
1999BB13 Eur.Phys.J. A 6, 391 (1999) T.Back, B.Cederwall, R.Wyss, A.Johnson, J.Cederkall, M.Devlin, J.Elson, D.R.LaFosse, F.Lerma, D.G.Sarantites, R.M.Clark, P.Fallon, I.Y.Lee, A.O.Macchiavelli, R.W.Macleod Observation of Superdeformed States in 88Mo NUCLEAR REACTIONS 58Ni(40Ca, 2p2α), E=185 MeV; measured Eγ, Iγ, γγ-, (charged particle)γ-coin, fractional Doppler shifts. 88Mo deduced superdeformed band transitions, transition quadrupole moments, configurations, deformation. Gammasphere, Microball arrays. Cranked mean-field calculations.
doi: 10.1007/s100500050361
1999CE09 Eur.Phys.J. A 6, 251 (1999) B.Cederwall, T.Back, R.Wyss, A.Johnson, J.Cederkall, M.Devlin, J.Elson, D.R.LaFosse, F.Lerma, D.G.Sarantites, R.M.Clark, P.Fallon, I.Y.Lee, A.O.Macchiavelli, R.W.Macleod Favoured Superdeformed States in 89Tc NUCLEAR REACTIONS 58Ni(40Ca, p2α), E=185 MeV; measured Eγ, Iγ, γγ-, (charged particle)γ-coin, residual Doppler shift. 89Tc deduced superdeformed band, transition quadrupole moment, configuration. Gammasphere, Microball arrays. NUCLEAR STRUCTURE 89Tc, 88Ru, 88Mo; calculated energy vs spin, total Routhian surfaces. Cranked mean-field approach.
doi: 10.1007/s100500050343
1999JO01 Nucl.Phys. A645, 47 (1999) K.Jonsson, B.Cederwall, A.Johnson, R.Wyss, T.Back, J.Cederkall, M.Devlin, J.Elson, D.R.LaFosse, F.Lerma, D.G.Sarantites, R.M.Clark, I.Y.Lee, A.O.Macchiavelli, R.W.Macleod Collective Excitations and Band Termination in 85Nb NUCLEAR REACTIONS 58Ni(40Ca, p3α), E=185 MeV; measured Eγ, Iγ, γγ-, (charged particle)γ-coin. 85Nb deduced high-spin levels, J, π, rotational bands features, B(M1)/B(E2). Cranked mean field calculations.
doi: 10.1016/S0375-9474(98)00603-4
1996SA51 Nucl.Instrum.Methods Phys.Res. A381, 418 (1996) D.G.Sarantites, P.-F.Hua, M.Devlin, L.G.Sobotka, J.Elson, J.T.Hood, D.R.LaFosse, J.E.Sarantites, M.R.Maier ' The Microball ' Design, Instrumentation and Response Characteristics of a 4π-Multidetector Exit Channel-Selection Device for Spectroscopic and Reaction Mechanism Studies with Gammasphere NUCLEAR REACTIONS 58Ni(28Si, xnypzα), E=130 MeV; measured Eγ, Iγ, γγ-, (particle)γ-coin; deduced charged particle detector array characteristics. Other reactions discussed.
doi: 10.1016/S0168-9002(96)00785-1
1990ST27 Nucl.Instrum.Methods Phys.Res. A294, 485 (1990) D.W.Stracener, D.G.Sarantites, L.G.Sobotka, J.Elson, J.T.Hood, Z.Majka, V.Abenante, A.Chbihi, D.C.Hensley Dwarf Ball and Dwarf Wall: Design, intrumentation, and response characteristics of a 4π CsI(Tl) plastic phoswich multidetector system for light charged particle and intermediate mass fragment spectrometry NUCLEAR REACTIONS 100Mo(48Ti, X), E=19 MeV/nucleon; measured light charged particle emission. 52Cr(34S, 2α), (34S, 2nα), E=130 MeV; measured ααγ-coin. 4π CsI(Tl) plastic phoswich multi-detector, dwarf(ball-wall) design.
doi: 10.1016/0168-9002(90)90290-M
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