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NSR database version of May 24, 2024.

Search: Author = L.Heilborn

Found 15 matches.

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2019MA72      Phys.Rev. C 100, 044612 (2019)

A.Rodriguez Manso, A.B.McIntosh, J.Gauthier, K.Hagel, L.Heilborn, A.Jedele, Z.Kohley, A.Wakhle, A.Zarrella, S.J.Yennello

Dynamical ternary decays of excited projectile-like fragments

NUCLEAR REACTIONS 70Zn(70Zn, X), E=35 MeV/nucleon; measured reaction products using 4π charged-particle array NIMROD at the K500 Cyclotron at Texas A and M University; deduced normalized yields of fragments as function of Z, Dalitz plot for fragment sizing correlation, normalized velocity distributions and normalized angular distributions of fragments for the different rupture scenarios, correlation between the angles of the first and second breaks for each rupture scenario, and angular correlation between the relative velocities of fragments; investigated neutron-proton equilibration in dynamically deformed nuclear systems by analyzing composition of fragments produced from the projectile-like fragments (PLF*) in semiperipheral collisions.

doi: 10.1103/PhysRevC.100.044612
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2018MA62      Phys.Rev. C 98, 044602 (2018)

L.W.May, A.Wakhle, A.B.McIntosh, Z.Kohley, S.Behling, A.Bonasera, G.Bonasera, P.Cammarata, K.Hagel, L.Heilborn, A.Jedele, A.Raphelt, A.Rodriguez Manso, G.Souliotis, R.Tripathi, M.D.Youngs, A.Zarrella, S.J.Yennello

Neutron-proton equilibration in 35 MeV/υ collisions of 64, 70Zn + 64, 70Zn and 64Zn, 64Ni + 64Zn, 64Ni quantified using triplicate probes

NUCLEAR REACTIONS 64,70Zn(70Zn, X), (64Zn, X), 64Zn, 64Ni(64Zn, X), (64Ni, X), E=35 MeV/nucleon; measured reaction products, isobaric yield ratios, isospin transport ratios of quasiparticle fragments using 4π NIMROD array for fragment detection at K150 cyclotron facility of Texas A and M University; deduced fractional neutron-proton equilibration width, quasiprojectile asymmetry, isoscaling parameter. Comparison with previous experimental data.

doi: 10.1103/PhysRevC.98.044602
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2017JE01      Phys.Rev.Lett. 118, 062501 (2017)

A.Jedele, A.B.McIntosh, K.Hagel, M.Huang, L.Heilborn, Z.Kohley, L.W.May, E.McCleskey, M.Youngs, A.Zarrella, S.J.Yennello

Characterizing Neutron-Proton Equilibration in Nuclear Reactions with Subzeptosecond Resolution

NUCLEAR REACTIONS 70Zn(70Zn, X), E=35 MeV/nucleon; measured reaction products, Eα, Iα; deduced fragment yields, neutron-proton equilibration. Comparison with available data.

doi: 10.1103/PhysRevLett.118.062501
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2017RO09      Phys.Rev. C 95, 044604 (2017)

A.Rodriguez Manso, A.B.McIntosh, A.Jedele, K.Hagel, L.Heilborn, Z.Kohley, L.W.May, A.Zarrella, S.J.Yennello

Detailed characterization of neutron-proton equilibration in dynamically deformed nuclear systems

NUCLEAR REACTIONS 70Zn(70Zn, X), 64Zn(64Zn, X), (64Ni, X), 64Ni(64Ni, X), E=35 MeV/nucleon; measured heavy fragment (HF) and light fragment (LF) using the NIMROD detector system at the K-500 cyclotron facility of Texas A and M; deduced normalized yields as functions of velocity, angular in-plane and out-of-plane distributions, average compositions as function of the decay alignment, rate constants as function of the atomic number, time dependence of neutron-proton equilibration in dynamically deformed nuclear systems. Comparison to a statistical model, and GEMINI++ simulations.

doi: 10.1103/PhysRevC.95.044604
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2017YO02      Nucl.Phys. A962, 61 (2017)

M.Youngs, A.B.McIntosh, K.Hagel, L.Heilborn, M.Huang, A.Jedele, Z.Kohley, L.W.May, E.McCleskey, A.Zarrella, S.J.Yennello

Observation of different isoscaling behavior between emitted fragments and residues

NUCLEAR REACTIONS 70Zn(70Zn, x), E=35 MeV/nucleon;76Zn(76Zn, x), E=35 MeV/nucleon; measured reaction products; deduced yield ratios vs energy of emitted particles for Z=5-12 and separately for fixed N-Z, slopes of the fit lines, isoscaling parameters for light particles and projectile-like fragments.

doi: 10.1016/j.nuclphysa.2017.03.009
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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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2015MA46      Phys.Rev. C 92, 024605 (2015)

J.Mabiala, H.Zheng, A.Bonasera, P.Cammarata, K.Hagel, L.Heilborn, Z.Kohley, L.W.May, A.B.McIntosh, M.D.Youngs, A.Zarrella, S.J.Yennello

Novel technique to extract experimental symmetry free energy information for nuclear matter

NUCLEAR REACTIONS 64Zn(64Zn, X), 70Zn(70Zn, X), 64Ni(64Ni, X), E=35 MeV/nucleon; measured charged particles and free neutron spectra using 4π NIMROD-ISiS array at K-500 cyclotron facility of Texas A and M University; deduced symmetry free energy coefficient as a function of fragment's neutron-proton asymmetry, temperature and density. Data fitted with Landau's equations.

doi: 10.1103/PhysRevC.92.024605
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2014MA68      Phys.Rev. C 90, 027602 (2014)

J.Mabiala, H.Zheng, A.Bonasera, P.Cammarata, K.Hagel, L.Heilborn, Z.Kohley, L.W.May, A.B.McIntosh, M.D.Youngs, A.Zarrella, S.J.Yennello

Coulomb corrections to experimental temperatures and densities in Fermi-energy heavy-ion collisions

NUCLEAR REACTIONS 64Zn(64Zn, X), 70Zn(70Zn, X), 64Ni(64Ni, X), E=35 MeV/nucleon; measured charged particle and neutron spectra using the 4p NIMROD-ISiS array at Texas A-M cyclotron facility; deduced temperatures and densities as function of excitation energy per nucleon with and without Coulomb correction, and for different values of neutron-proton asymmetry, correlation between density and temperature.

doi: 10.1103/PhysRevC.90.027602
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2014MC02      Eur.Phys.J. A 50, 35 (2014)

A.B.McIntosh, J.Mabiala, A.Bonasera, P.Cammarata, K.Hagel, Z.Kohley, L.Heilborn, L.W.May, P.Marini, A.Raphelt, G.A.Souliotis, S.Wuenschel, A.Zarrella, H.Zheng, S.J.Yennello

How much cooler would it be with some more neutrons? - Exploring the asymmetry dependence of the nuclear caloric curve and the liquid-gas phase transition

NUCLEAR REACTIONS 64Ni(64Ni, X), E=35 MeV/nucleon;64Zn(64Zn, X), E=35 MeV/nucleon;70Zn(70Zn, X), E=35 MeV/nucleon; calculated temperature vs E*/mass using light charged particle emission (proton to 9Be) and three thermometer methods; deduced thermodynamic quantities.

doi: 10.1140/epja/i2014-14035-8
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2014ST04      J.Phys.(London) G41, 025108 (2014)

B.C.Stein, A.Bonasera, G.A.Souliotis, H.Zheng, P.J.Cammarata, A.J.Echeverria, L.Heilborn, A.L.Keksis, Z.Kohley, J.Mabiala, P.Marini, L.W.May, A.B.McIntosh, C.Richers, D.V.Shetty, S.N.Soisson, R.Tripathi, S.Wuenschel, S.J.Yennello

Quantum suppression of fluctuations and temperatures of reconstructed A ∼ 30 quasi-projectiles

NUCLEAR REACTIONS 112Sn(32S, X)1H/3H/3He, E=45 MeV/nucleon; measured reaction products, Ep, Ip; deduced fragment multiplicities, proton temperature, energy density, supression of multiplicity fluctuations. Comparison with available data.

doi: 10.1088/0954-3899/41/2/025108
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2013MA06      Phys.Rev. C 87, 017603 (2013)

J.Mabiala, A.Bonasera, H.Zheng, A.B.McIntosh, L.W.May, P.Cammarata, Z.Kohley, K.Hagel, L.Heilborn, A.Raphelt, G.A.Souliotis, A.Zarrella, S.J.Yennello

Investigation of the nuclear phase transition using the Landau free-energy approach

NUCLEAR REACTIONS 64Zn(64Zn, X), 64Ni(64Ni, X), 70Zn(70Zn, X), E=35 MeV/nucleon; analyzed fragment yields, pairing coefficients for N=Z nuclei, temperature of quasiprojectile (QP) sources, dependence of nuclear equation of state on the proton and neutron concentration of the fragmenting system. Landau free-energy approach.

doi: 10.1103/PhysRevC.87.017603
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2013MA09      Phys.Rev. C 87, 024603 (2013)

P.Marini, A.Bonasera, G.A.Souliotis, P.Cammarata, S.Wuenschel, R.Tripathi, Z.Kohley, K.Hagel, L.Heilborn, J.Mabiala, L.W.May, A.B.McIntosh, S.J.Yennello

Systematic study of the symmetry energy within the approach of the statistical multifragmentation model

NUCLEAR REACTIONS 58Ni(78Kr, X), 64Ni(86Kr, X), E=35 MeV/nucleon; calculated symmetry energy coefficients, isoscaling and isobaric yield ratios of secondary fragments. Statistical multifragmentation model (SMM). Comparison with experimental data.

doi: 10.1103/PhysRevC.87.024603
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2013MC03      Phys.Rev. C 87, 034617 (2013)

A.B.McIntosh, A.Bonasera, Z.Kohley, P.J.Cammarata, K.Hagel, L.Heilborn, J.Mabiala, L.W.May, P.Marini, A.Raphelt, G.A.Souliotis, S.Wuenschel, A.Zarrella, S.J.Yennello

Using light charged particles to probe the asymmetry dependence of the nuclear caloric curve

NUCLEAR REACTIONS 70Zn(70Zn, X), 64Zn(64Zn, X), 64Ni(64Ni, X), E=35 MeV/nucleon; measured charged particle (proton, deuteron, triton, 3,4He), neutron spectra, momentum quadrupole fluctuation temperatures using NIMROD-ISiS 4π detector array at Texas AM; deduced caloric curves for light charged particles, Albergo yield ratio temperatures, dependence of nuclear temperatures on neutron-proton asymmetry. Momentum quadrupole fluctuation (MQF) thermometer.

doi: 10.1103/PhysRevC.87.034617
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2012MA08      Phys.Rev. C 85, 034617 (2012)

P.Marini, A.Bonasera, A.McIntosh, R.Tripathi, S.Galanopoulos, K.Hagel, L.Heilborn, Z.Kohley, L.W.May, M.Mehlman, S.N.Soisson, G.A.Souliotis, D.V.Shetty, W.B.Smith, B.C.Stein, S.Wuenschel, S.J.Yennello

Constraining the symmetry term in the nuclear equation of state at subsaturation densities and finite temperatures

NUCLEAR REACTIONS 64Zn(64Zn, X), 70Zn(70Zn, X), 64Ni, (64Ni, X), E=35 MeV/nucleon; measured charged-particle spectra using 4π NIMROD-ISiS array and Neutron Ball at Texas A reconstructed quasiprojectile distributions; deduced isotopic and isobaric yield ratios, isoscaling parameter, symmetry energy (enthalpy) coefficient. isoscaling, m-scaling, and the isobaric yield ratio methods for analysis of data.

doi: 10.1103/PhysRevC.85.034617
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2012SO16      J.Phys.(London) G39, 115104 (2012)

S.N.Soisson, A.Botvina, G.A.Souliotis, B.C.Stein, L.Heilborn, A.L.Keksis, Z.Kohley, L.W.May, D.V.Shetty, S.Wuenschel, S.J.Yennello

Multifragmentation of reconstructed quasi-projectiles in the mass region A ∼ 30

NUCLEAR REACTIONS 112Sn(32S, X), E=45 MeV/nucleon; analyzed available data; calculated charge and mass distribution of fragments, N/Z, yield ratios. Statistical multifragmentation model, comparison with available data.

doi: 10.1088/0954-3899/39/11/115104
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