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NSR database version of March 21, 2024.

Search: Author = J.Gauthier

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2023JE02      Phys.Rev. C 107, 024601 (2023)

A.Jedele, K.Hagel, M.Q.Sorensen, B.Harvey, A.Abbott, J.Gauthier, A.Hannaman, A.A.Hood, Y.-W.Lui, L.McCann, A.B.McIntosh, L.A.McIntosh, S.Schultz, Z.Tobin, R.Wada, M.Youngs, S.Yennello

Investigating the time dependence of neutron-proton equilibration using molecular dynamics simulations

NUCLEAR REACTIONS 70Zn(70Zn, X), E=35 MeV/nucleon; analyzed experimental yields from 2017RO09 (Phys. Rev. C 95, 044604) and and 2017JE01 (Phys. Rev. Lett. 118, 062501); deduced yields charge distributions and mass distribution for heavy and light fragments, fragments velocity distribution, angular distributions, neutron-to-proton ratio in the fragments. Simulations using Constrained Molecular Dynamics (COMD) and Antisymmetrized Molecular Dynamics (AMD) codes, which simulate the collision dynamics by solving time-dependent wave functions. GEMINI code used for de-excitation process.

doi: 10.1103/PhysRevC.107.024601
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2023MC01      Phys.Rev. C 107, 024612 (2023)

A.B.McIntosh, K.Hagel, L.A.McIntosh, R.Wada, J.Gauthier, P.J.Cammarata, A.Keeler, A.Abbott, A.Hannaman, B.Harvey, A.Jedele, Y.W.Lui, L.W.May, M.Sorensen, M.Youngs, A.Zarrella, S.J.Yennello

Apparent temperatures of neutron-poor and neutron-rich compound nuclei

NUCLEAR REACTIONS 12C(78Kr, X), (86Kr, X), E=15, 25, 35 MeV/nucleon; measured reaction products, fusion-evaporation residues, time-of-flight; deduced charged particles multiplicity, temperature of the reaction systems, Albergo temperature for p, d, t, α, 3He, 6He. Comparison to previous measurements and GEMINI++ calculations. QTS (quadrupole-triplet spectrometer) coupled to FAUST array of 68 Si-CsI(Tl)/PD telescopes at Texas AM University Cyclotron Institute.

doi: 10.1103/PhysRevC.107.024612
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2020HA11      Phys.Rev. C 101, 034605 (2020)

A.Hannaman, A.B.McIntosh, A.Jedele, A.Abbott, J.Gauthier, K.Hagel, B.Harvey, Z.Kohley, Y.Lui, L.A.McIntosh, A.Rodriguez Manso, M.Sorensen, Z.Tobin, R.Wada, M.Youngs, S.J.Yennello

Isoscaling and nuclear reaction dynamics

NUCLEAR REACTIONS 70Zn(70Zn, X), 64Zn(64Zn, X), E=35 MeV/nucleon; measured reaction products were measured using the Neutron Ion Multidetector for Reaction Oriented Dynamics (NIMROD), yields and angular distributions of fragments (Z=4 to 8, Z=12 and Z>12) at the K500 Cyclotron facility of Texas A and M University; deduced isoscaling parameters α and β as a function of breakup angle in binary excited projectile-like fragment decays. Comparison with statistical model calculations.

doi: 10.1103/PhysRevC.101.034605
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2020HA36      Phys.Rev. C 102, 064625 (2020)

B.Harvey, M.Youngs, A.B.McIntosh, A.Jedele, A.Abbott, J.Gauthier, K.Hagel, A.Hannaman, A.Hood, K.Krieble, Y.-W.Lui, L.A.McIntosh, A.Rodriguez Manso, M.Sorensen, Z.Tobin, R.Wada, A.Zarrella, S.J.Yennello

Correlation between time and angular alignment in molecular dynamics simulations of heavy ion collisions

NUCLEAR REACTIONS 70Zn(70Zn, X), E=35, 45 MeV/nucleon; analyzed yield of events as a function of impact parameter, angular alignment distributions, ratio of yields from the flipped peak to the dynamic peak as a function of the charge asymmetry of projectile-like fragments (PLF*) breakup, and angular alignment versus time using event tree method of analyzing molecular dynamics simulations, with constrained molecular dynamics (CoMD) model for accurate distributions of fragment masses and velocities.

doi: 10.1103/PhysRevC.102.064625
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2020NA39      Phys.Rev. C 102, 064621 (2020)

J.B.Natowitz, H.Pais, G.Ropke, J.Gauthier, K.Hagel, M.Barbui, R.Wada

Isotopic equilibrium constants for very low-density and low-temperature nuclear matter

NUCLEAR REACTIONS 241Pu(n, F)1n/1H/2H/3H/4H/3He/4He/5He/6He/7He/8He/9He/7Li/8Li/9Li/11Li/7Be/8Be/9Be/10Be/11Be/12Be/14Be/10B/11B/12B/14B/15B/17B/14C/15C/16C/17C/18C/19C/20C/15N/16N/17N/18N/19N/20N/21N/15O/19O/20O/21O/22O/24O/19F/20F/21F/22F/24F/24Ne/27Ne/24Na/27Na/28Na/30Na/27Mg/28Mg/30Mg/30Al/34Si/35Si/36Si, E=thermal; calculated equilibrium constants for light isotopes, relative yields of the H, He, and Be isotopes produced in the ternary fission of 242Pu. Comparison with available experimental data. Relativistic mean-field model, with a universal medium modification correction for the attractive σ meson coupling.

doi: 10.1103/PhysRevC.102.064621
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2019CA04      Phys.Rev. C 99, 014606 (2019)

X.G.Cao, E.J.Kim, K.Schmidt, K.Hagel, M.Barbui, J.Gauthier, S.Wuenschel, G.Giuliani, M.R.D.Rodriguez, S.Kowalski, H.Zheng, M.Huang, A.Bonasera, R.Wada, N.Blando, G.Q.Zhang, C.Y.Wong, A.Staszczak, Z.X.Ren, Y.K.Wang, S.Q.Zhang, J.Meng, J.B.Natowitz

Examination of evidence for resonances at high excitation energy in the 7 α disassembly of 28Si

NUCLEAR REACTIONS 12C(28Si, X), (28Si, 7α), E=35 MeV/nucleon; measured Eα, Iα, excitation functions for the α-conjugate exit channels using the 4π NIMROD-ISiS array for charged particle detection at the K500 superconducting cyclotron facility of Texas A and M. 28Si; deduced resonances at high excitation energies, shapes of 7α events in the de-excitation of projectile-like nuclei; calculated energies, J, π, configurations, quadrupole deformation of toroidal high-spin isomers using covariant functional PC-PK1 and DD-ME2.

doi: 10.1103/PhysRevC.99.014606
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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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2018BA38      Phys.Rev. C 98, 044601 (2018)

M.Barbui, K.Hagel, J.Gauthier, S.Wuenschel, R.Wada, V.Z.Goldberg, R.T.deSouza, S.Hudan, D.Fang, X.-G.Cao, J.B.Natowitz

Searching for states analogous to the 12C Hoyle state in heavier nuclei using the thick target inverse kinematics technique

NUCLEAR REACTIONS 4He(20Ne, α), (20Ne, 2α), (20Ne, 3α), (20Ne, 4α), E=13 MeV/nucleon; measured Eα, α(θ), αα-coin, and differential σ(θ) for resonant scattering using ΔE-E telescopes and thick target inverse kinematics (TTIK) technique at K150 cyclotron facility of Texas A and M University. 8Be, 12C, 16O, 24Mg; deduced levels, J, π, multi-α condensed states, widths, evidence for a level in 16O at 15.2 MeV analogous to Hoyle state in 12C. Comparison with PACE4 and HIPSE simulations, and with experimental results.

doi: 10.1103/PhysRevC.98.044601
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2018WU05      Phys.Rev. C 97, 064602 (2018)

S.Wuenschel, K.Hagel, M.Barbui, J.Gauthier, X.G.Cao, R.Wada, E.J.Kim, Z.Majka, R.Planeta, Z.Sosin, A.Wieloch, K.Zelga, S.Kowalski, K.Schmidt, C.Ma, G.Zhang, J.B.Natowitz

Experimental survey of the production of α-decaying heavy elements in 238U+232Th reactions at 7.5-6.1 MeV/nucleon

NUCLEAR REACTIONS 232Th(238U, X), (197Au, X), E=6.1 MeV/nucleon; measured reaction products, Eα, α(θ), Eα(t) of reaction product decays, (recoil)α-coin, differential σ(θ) using Big-Sol Superconducting-Solenoid Time of Flight Spectrometer at Texas A and M; deduced α-decay and spontaneous fission T1/2 of recoils and α-decay T1/2 of daughter nuclides, and of correlated pairs, thick target differential cross sections. Comparison with previous experimental results, and theoretical predictions.

doi: 10.1103/PhysRevC.97.064602
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2017SC09      Phys.Rev. C 95, 054618 (2017)

K.Schmidt, X.Cao, E.J.Kim, K.Hagel, M.Barbui, J.Gauthier, S.Wuenschel, G.Giuliani, M.R.D.Rodrigues, H.Zheng, M.Huang, N.Blando, A.Bonasera, R.Wada, C.Botosso, G.Liu, G.Viesti, S.Moretto, G.Prete, S.Pesente, D.Fabris, Y.El Masri, T.Keutgen, S.Kowalski, A.Kumar, G.Zhang, J.B.Natowitz

α-conjugate neck structures in the collisions of 35 MeV/nucleon 40Ca with 40Ca

NUCLEAR REACTIONS 40Ca(40Ca, X), E=35 MeV/nucleon; measured reaction products, yields of the heaviest fragments, average excitation energy vs exit channel separation energy, events for α particles and α-conjugate nuclei, excitation energy distributions, excitation functions, and projectile-like fragments in the exit channels using the NIMROD-ISiS 4π array at the K500 superconducting cyclotron of the Texas A and M University; deduced hierarchy effect, dominance of α-conjugate exit channels in a subset of events with a total α-conjugate A=40 and Z=20, source-frame-invariant velocity plots for α-like and two fragment α-like exit channels, parallel velocity distributions for α-conjugate exit channels, de-excitation of α-conjugate nuclei, and the dynamics of collisions leading to projectile-like fragment exit channels.

doi: 10.1103/PhysRevC.95.054618
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2015GR16      Phys.Rev. C 92, 064606 (2015)

D.Gruyer, J.D.Frankland, E.Bonnet, A.Chbihi, G.Ademard, M.Boisjoli, B.Borderie, R.Bougault, E.Galichet, J.Gauthier, D.Guinet, P.Lautesse, N.Le Neindre, E.Legouee, I.Lombardo, O.Lopez, L.Manduci, P.Marini, K.Mazurek, P.N.Nadtochy, M.Parlog, M.F.Rivet, R.Roy, E.Rosato, G.Spadaccini, G.Verde, E.Vient, M.Vigilante, J.P.Wieleczko, for the INDRA Collaboration

Coulomb chronometry to probe the decay mechanism of hot nuclei

NUCLEAR REACTIONS Sn(129Xe, X), E=8, 12, 15, 18, 20, 25 MeV/nucleon; measured particle spectra using INDRA 4π charged product multidetector at GANIL accelerator facility; deduced correlations between cosine of the flow angle and the total detected charge, light charged particle multiplicities as function of beam energy, Dalitz plots of central collisions, normalized charge distributions, distribution of the intersplitting angle, Coulomb distortion parameter as function of intersplitting time, mean intersplitting time as function of beam energy and estimated excitation energy of the initial composite systems, Coulomb chronometer for three-fragment exit channel and strong Coulomb proximity effects, and multifragmentation.

doi: 10.1103/PhysRevC.92.064606
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2014GA22      Phys.Rev. C 90, 034618 (2014)

J.Gauthier, R.Roy, P.St-Onge, B.Wallace, M.F.Rivet, B.Borderie, D.Gruyer, J.D.Frankland, A.Chbihi, M.Boisjoli, E.Legouee, M.Parlog, R.Bougault, N.Le Neindre, P.Marini, E.Rosato, D.Guinet

Quasiprojectile and intermediate velocity isotopic ratios for light fragments emitted in the 36Ar + 58Ni and 58Ni + 58Ni reactions between 32A and 84A MeV

NUCLEAR REACTIONS 58Ni(36Ar, X), E=32, 40, 52, 63, 74, 84 MeV/nucleon; 58Ni(58Ni, X), E=32, 40, 52, 64, 74, 82 MeV/nucleon; measured particle spectra, σ(E, θ) using INDRA multidetector at GANIL facility; deduced yields, quasi-projectile (QP) rapidity, N/Z of H, He, Li and Be isotopes as a function of beam energy. Comparison to antisymmetrized molecular dynamics simulations.

doi: 10.1103/PhysRevC.90.034618
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2013BR05      Phys.Rev. C 87, 061601 (2013)

K.Brown, S.Hudan, R.T.deSouza, J.Gauthier, R.Roy, D.V.Shetty, G.A.Souliotis, S.J.Yennello

Timescale for equilibration of N/Z gradients in dinuclear systems

NUCLEAR REACTIONS 27Al, 64Zn, 209Bi(64Zn, X), E=45 MeV/nucleon; measured particle spectra, angular distributions of binary fragments at Texas AM facility;deduced average neutron to proton (N/Z) ratios for fragments as function of the decay angle, dependence of average neutron number on the parallel and transverse components of relative velocity, dependence of the average differential neutron number on time. Binary breakup of projectile-like fragment. Dinuclear complex.

doi: 10.1103/PhysRevC.87.061601
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2012HU05      Phys.Rev. C 86, 021603 (2012)

S.Hudan, A.B.McIntosh, R.T.de Souza, S.Bianchin, J.Black, A.Chbihi, M.Famiano, M.O.Fregeau, J.Gauthier, D.Mercier, J.Moisan, C.J.Metelko, R.Roy, C.Schwarz, W.Trautmann, R.Yanez

Tracking saddle-to-scission dynamics using N/Z in projectile breakup reactions

NUCLEAR REACTIONS 112,124Sn(124Xe, X), (136Xe, X), E=50 MeV/nucleon; analyzed angular distribution of binary splits, isotopic composition of Z=4-8 fragments as a function of their decay angle, relative fragment velocity, and on time.

doi: 10.1103/PhysRevC.86.021603
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2010MC03      Phys.Rev. C 81, 034603 (2010)

A.B.McIntosh, S.Hudan, J.Black, D.Mercier, C.J.Metelko, R.Yanez, R.T.de Souza, A.Chbihi, M.Famiano, M.O.Fregeau, J.Gauthier, J.Moisan, R.Roy, S.Bianchin, C.Schwarz, W.Trautmann

Short-lived binary splits of an excited projectile-like fragment induced by transient deformation

NUCLEAR REACTIONS 124Sn(124Xe, X), E=50 MeV/nucleon; measured isotopic yields, angular distributions, parallel velocity distribution of fragments, mass distributions in the binary breakup of an excited projectile-like fragment (PLF). Comparison with schematic one-dimensional Langevin model.

doi: 10.1103/PhysRevC.81.034603
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2009HU16      Phys.Rev. C 80, 064611 (2009)

S.Hudan, A.B.McIntosh, J.Black, D.Mercier, C.J.Metelko, R.Yanez, R.T.de Souza, A.Chbihi, M.Famiano, M.O.Fregeau, J.Gauthier, J.Moisan, R.Roy, S.Bianchin, C.Schwarz, W.Trautmann, A.S.Botvina

Charge correlations and isotopic distributions of projectile fragmentation events in 124Xe+112Sn at E/A=50 MeV

NUCLEAR REACTIONS 112Sn(124Xe, X), E=50 MeV/nucleon; measured fission fragments; deduced correlation function between heavy-light, heavy-medium fragments, Dalitz diagrams, and isotopic distributions for Z=4-14 symmetric ternary events. Comparison of measured charge correlations in fragmentation reactions with calculations using GEMINI code and statistical multifragmentation model (SMM).

doi: 10.1103/PhysRevC.80.064611
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2006TH11      Phys.Rev. C 74, 051602 (2006)

D.Theriault, J.Gauthier, F.Grenier, F.Moisan, C.St-Pierre, R.Roy, B.Davin, S.Hudan, T.Paduszynski, R.T.de Souza, E.Bell, J.Garey, J.Iglio, A.L.Keksis, S.Parketon, C.Richers, D.V.Shetty, S.N.Soisson, G.A.Souliotis, B.C.Stein, S.J.Yennello

Neutron-to-proton ratios of quasiprojectile and midrapidity emission in the 64Zn + 64Zn reaction at 45 MeV/nucleon

NUCLEAR REACTIONS 64Zn(64Zn, X), E=45 MeV/nucleon; measured charged particle and neutron spectra, σ(Eθ); deduced rapidity dependence of neutron-to-proton ratios, related features.

doi: 10.1103/PhysRevC.74.051602
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2005PA77      Nucl.Instrum.Methods Phys.Res. A547, 464 (2005)

T.Paduszynski, P.Sprunger, R.T.de Souza, S.Hudan, A.Alexander, B.Davin, G.Fleener, A.Mcintosh, C.Metelko, R.Moore, N.Peters, J.Poehlman, J.Gauthier, F.Grenier, R.Roy, D.Theriault, E.Bell, J.Garey, J.Iglio, A.L.Keksis, S.Parketon, C.Richers, D.V.Shetty, S.N.Soisson, G.A.Souliotis, B.Stein, S.J.Yennello

Resolving multiple particles in a highly segmented silicon array

NUCLEAR REACTIONS 64Zn(64Zn, X), E = 45 MeV/nucleon; measured charge particle multiplicity distributions.

doi: 10.1016/j.nima.2005.04.011
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2004MO24      Nucl.Phys. A739, 15 (2004)

R.Moustabchir, L.Beaulieu, L.Gingras, R.Roy, M.Samri, G.Boudreault, J.Gauthier, G.P.Gelinas, F.Grenier, R.Ibbotson, Y.Larochelle, E.Martin, J.Moisan, D.Ouerdane, D.Rowland, A.Ruangma, C.St-Pierre, D.Theriault, A.Vallee, E.Winchester, S.J.Yennello

Target proximity effect and dynamical projectile breakup at intermediate energies

NUCLEAR REACTIONS 12C, 24Mg, 197Au(58Ni, X), E=34.5 MeV/nucleon; 70Zn(58Ni, X), E=40 MeV/nucleon; measured fragments angular distributions, charge and velocity distributions, correlation functions; deduced quasi-projectile breakup mechanism, related features.

doi: 10.1016/j.nuclphysa.2004.03.149
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2003SA22      Phys.Rev. C 68, 014609 (2003)

M.Samri, L.Gingras, F.Grenier, L.Beaulieu, J.Gauthier, G.P.Gelinas, Y.Larochelle, J.Moisan, R.Moustabchir, R.Roy, C.St-Pierre, D.Theriault, A.Vallee

Emission time and sequence in a 58Ni+12C fusionlike source at 34.5 MeV/nucleon

NUCLEAR REACTIONS 12C(58Ni, X), E=34.5 MeV; measured particle spectra, two-particle correlations; deduced α-emission time, related features. Statistical discriminant method.

doi: 10.1103/PhysRevC.68.014609
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