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NSR database version of April 11, 2024.

Search: Author = Z.Chajecki

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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
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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
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2686. Data from this article have been entered in the XUNDL database. For more information, click here.


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
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Data from this article have been entered in the XUNDL database. For more information, click here.


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
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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
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Data from this article have been entered in the XUNDL database. For more information, click here.


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
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Data from this article have been entered in the XUNDL database. For more information, click here.


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
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2437. Data from this article have been entered in the XUNDL database. For more information, click here.


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
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Data from this article have been entered in the XUNDL database. For more information, click here.


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
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Data from this article have been entered in the XUNDL database. For more information, click here.


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
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Data from this article have been entered in the XUNDL database. For more information, click here.


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
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Data from this article have been entered in the XUNDL database. For more information, click here.


2017TS02      Phys.Rev. C 95, 044614 (2017)

M.B.Tsang, J.Estee, H.Setiawan, W.G.Lynch, J.Barney, M.B.Chen, G.Cerizza, P.Danielewicz, J.Hong, P.Morfouace, R.Shane, S.Tangwancharoen, K.Zhu, T.Isobe, M.Kurata-Nishimura, J.Lukasik, T.Murakami, Z.Chajecki, for the S|pRIT Collaboration

Pion production in rare-isotope collisions

NUCLEAR REACTIONS 132Sn(124Sn, X), 108Sn(112Sn, X), E=300, 200 MeV/nucleon; calculated center-of-mass energy spectra for neutrons, protons, tritons, 3He, π- and π+ particles emitted in central collisions, comparison of π-+ spectral and isoscaling ratios in the two reactions, pion energy spectra. Simulations used the Boltzmann-Uehling-Uhlenbeck transport model.

doi: 10.1103/PhysRevC.95.044614
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2017WU03      Phys.Rev. C 95, 014310 (2017)

A.H.Wuosmaa, S.Bedoor, K.W.Brown, W.W.Buhro, Z.Chajecki, R.J.Charity, W.G.Lynch, J.Manfredi, S.T.Marley, D.G.McNeel, A.S.Newton, D.V.Shetty, R.H.Showalter, L.G.Sobotka, M.B.Tsang, J.R.Winkelbauer, R.B.Wiringa

Ground-state properties of 5H from the 6He (d, 3He) 5H reaction

NUCLEAR REACTIONS 2H(6He, 3He), (6He, t), E=55 MeV/nucleon, [secondary 6He beam from 9Be(18O, X), E=120 MeV/nucleon and using A1900 fragment separator at NSCL-MSU facility]; measured particle identification (PID) spectra, kinetic-energy spectra of low-energy 3He and 3H particles using High Resolution Array (HiRA) of charged-particle-detector telescopes and CsI(Tl) scintillator crystals; deduced correlations between E(3He) and E(3H), and E(3H) and E(4He), Q-value dependence of cross sections from DWBA calculations, 3H recoil-energy distributions from the decay of 5H, beam-like recoils and two-neutron correlations. 5H, 5He; deduced energies and widths of resonances corresponding to the ground state. Comparison with previous experimental results, shell-model and ab initio nuclear-structure calculations.

COMPILATION 5H; compiled theoretical and previous (1968-2005) experiments for identification, and results of resonance energy and width of ground-state resonance of 5H.

doi: 10.1103/PhysRevC.95.014310
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Data from this article have been entered in the XUNDL database. For more information, click here.


2016CO12      Phys.Rev. C 94, 011601 (2016)

D.D.S.Coupland, M.Youngs, Z.Chajecki, W.G.Lynch, M.B.Tsang, Y.X.Zhang, M.A.Famiano, T.K.Ghosh, B.Giacherio, M.A.Kilburn, Jenny Lee, H.Liu, F.Lu, P.Morfouace, P.Russotto, A.Sanetullaev, R.H.Showalter, G.Verde, J.Winkelbauer

Probing effective nucleon masses with heavy-ion collisions

NUCLEAR REACTIONS 124Sn(124Sn, X), 112Sn(112Sn, X), E=50, 120 MeV/nucleon; measured free neutron and proton spectra, coalescence invariant (CI) neutron and proton spectra using Large Area Neutron Array (LANA) for neutrons and Large Area Silicon Strip Array (LASSA) for protons at NSCL-MSU; deduced differential cross sections. Comparison with calculations using quantum molecular dynamics (QMD) transport model with standard Skyrme interactions (ImQMD-Sky).

doi: 10.1103/PhysRevC.94.011601
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2016FR01      Phys.Rev. C 93, 014321 (2016)

A.Fritsch, S.Beceiro Novo, D.Suzuki, W.Mittig, J.J.Kolata, T.Ahn, D.Bazin, F.D.Becchetti, B.Bucher, Z.Chajecki, X.Fang, M.Febbraro, A.M.Howard, Y.Kanada-En'yo, W.G.Lynch, A.J.Mitchell, M.Ojaruega, A.M.Rogers, A.Shore, T.Suhara, X.D.Tang, R.Torres-Isea, H.Wang

One-dimensionality in atomic nuclei: A candidate for linear-chain α clustering in 14C

NUCLEAR REACTIONS 4He(10Be, α), E=39.7 MeV, [secondary 10Be beam from 13C(11B, 10B), E=46 MeV primary reaction]; measured particle spectra, differential cross sections for elastic and inelastic scattering, angular distributions using the prototype active target-time projection chamber (PAT-TPC) at Notre Dame TwinSol facility. 14C; deduced levels, α-resonances, J, π, band, α-widths, L-transfers, spectroscopic factors. R-matrix analysis. Comparison with predictions of antisymmetrized molecular dynamics (AMD) theory, and evidence for a 3α-linear chain structure in 14C.

doi: 10.1103/PhysRevC.93.014321
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Data from this article have been entered in the XUNDL database. For more information, click here.


2016RU03      Phys.Rev. C 94, 034608 (2016)

P.Russotto, S.Gannon, S.Kupny, P.Lasko, L.Acosta, M.Adamczyk, A.Al-Ajlan, M.Al-Garawi, S.Al-Homaidhi, F.Amorini, L.Auditore, T.Aumann, Y.Ayyad, Z.Basrak, J.Benlliure, M.Boisjoli, K.Boretzky, J.Brzychczyk, A.Budzanowski, C.Caesar, G.Cardella, P.Cammarata, Z.Chajecki, M.Chartier, A.Chbihi, M.Colonna, M.D.Cozma, B.Czech, E.De Filippo, M.Di Toro, M.Famiano, I.Gasparic, L.Grassi, C.Guazzoni, P.Guazzoni, M.Heil, L.Heilborn, R.Introzzi, T.Isobe, K.Kezzar, M.Kis, A.Krasznahorkay, N.Kurz, E.La Guidara, G.Lanzalone, A.Le Fevre, Y.Leifels, R.C.Lemmon, Q.F.Li, I.Lombardo, J.Lukasik, W.G.Lynch, P.Marini, Z.Matthews, L.May, T.Minniti, M.Mostazo, A.Pagano, E.V.Pagano, M.Papa, P.Pawlowski, S.Pirrone, G.Politi, F.Porto, W.Reviol, F.Riccio, F.Rizzo, E.Rosato, D.Rossi, S.Santoro, D.G.Sarantites, H.Simon, I.Skwirczynska, Z.Sosin, L.Stuhl, W.Trautmann, A.Trifiro, M.Trimarchi, M.B.Tsang, G.Verde, M.Veselsky, M.Vigilante, Y.Wang, A.Wieloch, P.Wigg, J.Winkelbauer, H.H.Wolter, P.Wu, S.Yennello, P.Zambon, L.Zetta, M.Zoric

Results of the ASY-EOS experiment at GSI: The symmetry energy at suprasaturation density

NUCLEAR REACTIONS 197Au(197Au, X), E=400 MeV/nucleon; measured directed and elliptic flow of neutrons and charged particles as a function of rapidity and transverse momentum in central and semi-central collisions using Large Area Neutron Detector (LAND), parts of CHIMERA multidetector, ALADIN Time-of-flight Wall, KRATTA telescopes, and Washington University Microball detector as part of ASY-EOS experimental campaign at GSI facility; deduced density dependence of nuclear symmetry energy, equation-of-state (EOS) of neutron-rich matter. Comparison with UrQMD transport model calculations.

doi: 10.1103/PhysRevC.94.034608
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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
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Data from this article have been entered in the XUNDL database. For more information, click here.


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
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Data from this article have been entered in the XUNDL database. For more information, click here.


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
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Data from this article have been entered in the XUNDL database. For more information, click here.


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
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2014WI07      Phys.Rev. C 90, 064615 (2014)

K.Wimmer, D.Bazin, A.Gade, J.A.Tostevin, T.Baugher, Z.Chajecki, D.Coupland, M.A.Famiano, T.K.Ghosh, G.F.Grinyer, M.E.Howard, M.Kilburn, W.G.Lynch, B.Manning, K.Meierbachtol, P.Quarterman, A.Ratkiewicz, A.Sanetullaev, R.H.Showalter, S.R.Stroberg, M.B.Tsang, D.Weisshaar, J.Winkelbauer, R.Winkler, M.Youngs

Elastic breakup cross sections of well-bound nucleons

NUCLEAR REACTIONS 9Be(28Mg, 27Na), E=93 MeV/nucleon, [28Mg secondary beam from 9Be(40ar, X), E=140 MeV/nucleon primary reaction]; measured fragment spectra, (light charged particles)fragment-coin using A1900 fragment separator, S800 magnetic spectrograph and high-resolution array HiRA at NSCL-MSU facility; deduced missing-mass spectra of the one-proton removal reaction residues 7Be, 8B and 27Na, and percentage contributions to proton removal cross section from the elastic and inelastic nucleon removal mechanisms. Comparison of experimental breakup fractions with eikonal reaction model predictions, and previous experimental results.

doi: 10.1103/PhysRevC.90.064615
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2143.


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
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Data from this article have been entered in the XUNDL database. For more information, click here.


2012HE03      Phys.Rev. C 85, 014606 (2012)

V.Henzl, M.A.Kilburn, Z.Chajecki, D.Henzlova, W.G.Lynch, D.Brown, A.Chbihi, D.D.S.Coupland, P.Danielewicz, R.T.deSouza, M.Famiano, C.Herlitzius, S.Hudan, J.Lee, S.Lukyanov, A.M.Rogers, A.Sanetullaev, L.G.Sobotka, Z.Y.Sun, M.B.Tsang, A.Vander Molen, G.Verde, M.S.Wallace, M.Youngs

Angular dependence in proton-proton correlation functions in central 40Ca+40Ca and 48Ca+48Ca reactions

NUCLEAR REACTIONS 40Ca(40Ca, X), 48Ca(48Ca, X), E=80 MeV/nucleon; measured proton spectra, proton-proton angular correlation functions using HiRA and 4π arrays at the NSCL facility; deduced angular momentum dependence on reconstructed source distribution by imaging method, and Gaussian fitting procedure. Comparison with Boltzmann-Uehling-Uhlenbeck (BUU) transport model simulations.

doi: 10.1103/PhysRevC.85.014606
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2012WI06      Phys.Rev. C 85, 051603 (2012)

K.Wimmer, D.Bazin, A.Gade, J.A.Tostevin, T.Baugher, Z.Chajecki, D.Coupland, M.A.Famiano, T.K.Ghosh, G.F.Grinyer, R.Hodges, M.E.Howard, M.Kilburn, W.G.Lynch, B.Manning, K.Meierbachtol, P.Quarterman, A.Ratkiewicz, A.Sanetullaev, S.R.Stroberg, M.B.Tsang, D.Weisshaar, J.Winkelbauer, R.Winkler, M.Youngs

Probing elastic and inelastic breakup contributions to intermediate-energy two-proton removal reactions

NUCLEAR REACTIONS 9Be(28Mg, 26Ne), [28Mg secondary beam from 9Be(40Ar, X), E=140 MeV/nucleon primary reaction], E=93 MeV/nucleon; measured particle spectra, energy loss, time of flight, (26Ne)(particle)(particle)-coin, relative cross sections, σ(θ), relative and absolute yields using Coupled Cyclotron facility at NSCL; deduced missing mass spectrum for 26Ne and two proton coincidence events. Importance of stripping, diffraction-stripping, and diffraction two-proton removal mechanisms. Comparison with predictions of reaction model based on eikonal dynamics, and sd-shell structure amplitudes.

doi: 10.1103/PhysRevC.85.051603
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2012WI10      Phys.Rev.Lett. 109, 202505 (2012)

K.Wimmer, D.Bazin, A.Gade, J.A.Tostevin, T.Baugher, Z.Chajecki, D.Coupland, M.A.Famiano, T.K.Ghosh, G.F.Grinyer, R.Hodges, M.E.Howard, M.Kilburn, W.G.Lynch, B.Manning, K.Meierbachtol, P.Quarterman, A.Ratkiewicz, A.Sanetullaev, E.C.Simpson, S.R.Stroberg, M.B.Tsang, D.Weisshaar, J.Winkelbauer, R.Winkler, M.Youngs

Correlations in Intermediate Energy Two-Proton Removal Reactions

NUCLEAR REACTIONS 9Be(28Mg, X)26Ne, E=93 MeV/nucleon; measured reaction products; deduced σ(E), σ(θ, E), Dalitz plots. Comparison with calculations and available data.

doi: 10.1103/PhysRevLett.109.202505
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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
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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
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2011TS01      Prog.Part.Nucl.Phys. 66, 400 (2011)

M.B.Tsang, Z.Chajecki, D.Coupland, P.Danielewicz, F.Famiano, R.Hodges, M.Kilburn, F.Lu, W.G.Lynch, J.Winkelbauer, M.Youngs, Y.X.Zhang

Constraints on the density dependence of the symmetry energy from heavy-ion collisions

doi: 10.1016/j.ppnp.2011.01.041
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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
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2009CH13      Phys.Rev. C 79, 034908 (2009); Publishers note Phys.Rev. C 80, 019901 (2009)

Z.Chajecki, M.Lisa

Conservation laws and multiplicity evolution of spectra at energies available at the BNL Relativistic Heavy Ion Collider

doi: 10.1103/PhysRevC.79.034908
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2009CH52      Nucl.Phys. A830, 199c (2009)

Z.Chajecki, M.Lisa

Do p+p Collisions Flow at RHIC? Understanding One-Particle Distributions, Multiplicity Evolution, and Conservation Laws

doi: 10.1016/j.nuclphysa.2009.10.094
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2008CH32      Phys.Rev. C 78, 064903 (2008)

Z.Chajecki, M.Lisa

Global conservation laws and femtoscopy of small systems

NUCLEAR REACTIONS p(p, π), E not given; calculated correlation functions.

doi: 10.1103/PhysRevC.78.064903
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2007CH16      Eur.Phys.J. C 49, 81 (2007)

Z.Chajecki, and the STAR Collaboration

Femtoscopy in p+p vs. heavy ion collisions in STAR

NUCLEAR REACTIONS 1H(p, X), Cu(Cu, X), 197Au(d, X), (197Au, X), E(cm)=200 GeV/nucleon; compiled, analyzed pion correlation data, transverse mass dependence.

doi: 10.1140/epjc/s10052-006-0087-4
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2006CH67      Nucl.Phys. A774, 599 (2006)

Z.Chajecki, and the STAR Collaboration

Identical Particle Correlations in STAR

NUCLEAR REACTIONS 1H(p, X), Au(d, X), Cu(Cu, X), E(cm)=200 GeV/nucleon; Au(Au, X), E(cm)=62, 200 GeV/nucleon; measured identical-particle correlations; analyzed transverse mass dependence of the HBT radii with system size. Comparison with Glauber model.

doi: 10.1016/j.nuclphysa.2006.06.095
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