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NSR database version of April 11, 2024.

Search: Author = V.Viola

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2012LI37      Phys.Rev. C 86, 024605 (2012)

T.X.Liu, W.G.Lynch, R.H.Showalter, M.B.Tsang, X.D.Liu, W.P.Tan, M.J.van Goethem, G.Verde, A.Wagner, H.F.Xi, H.S.Xu, M.A.Famiano, R.T.de Souza, V.E.Viola, R.J.Charity, L.G.Sobotka

Isospin observables from fragment energy spectra

NUCLEAR REACTIONS 112,124Sn(112Sn, X), (124Sn, X)1H/2H/3H/3He/4He/6He/6Li/7Li/8Li/9Li/7Be/9Be/10Be/11Be/10B/11B/12B/13B/11C/12C/13C/14C/15C/16C/14N/15N/16N/17N/18N/15O/16O/17O/18O/19O/20O, E=50 MeV/nucleon; measured energy spectra of light charged particles and intermediate mass fragments, fragment yields, σ(E) using LASSA, Miniball and Miniwall arrays at NSCL facility; deduced N/Z ratios.

doi: 10.1103/PhysRevC.86.024605
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC1946.


2009SO03      Phys.Rev. C 79, 034607 (2009)

R.A.Soltz, R.J.Newby, J.L.Klay, M.Heffner, L.Beaulieu, T.Lefort, K.Kwiatkowski, V.E.Viola

Centrality dependence of the thermal excitation-energy deposition in 8-15 GeV/c hadron-Au reactions

doi: 10.1103/PhysRevC.79.034607
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2008GI07      Phys.Rev. C 78, 034601 (2008)

D.S.Ginger, K.Kwiatkowski, G.Wang, W.-c.Hsi, S.Hudan, E.Cornell, R.T.de Souza, V.E.Viola, R.G.Korteling

Exclusive studies of 130 - 270 MeV 3He- and 200-MeV proton-induced reactions on 27Al, natAg, and 197Au

NUCLEAR REACTIONS 27Al, Ag, 197Au(3He, α), E=130, 270 MeV; 27Al, Ag, 197Au(p, α), E=200 MeV; measured α-spectra, σ, angular distributions, (particle)(particle)-coin, α-yields, multiplicity distributions, fragment charge distributions, linear momentum distributions of charged particles.

doi: 10.1103/PhysRevC.78.034601
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2006LI21      Europhys.Lett. 74, 806 (2006)

T.X.Liu, W.G.Lynch, M.J.van Goethem, X.D.Liu, R.Shomin, W.P.Tan, M.B.Tsang, G.Verde, A.Wagner, H.F.Xi, H.S.Xu, W.A.Friedman, S.R.Souza, R.Donangelo, L.Beaulieu, B.Davin, Y.Larochelle, T.Lefort, R.T.de Souza, R.Yanez, V.E.Viola, R.J.Charity, L.G.Sobotka

Cooling dynamics in multi-fragmentation processes

NUCLEAR REACTIONS 112Sn(112Sn, X), E not given; measured fragments isotopic yields, kinetic energy spectra; deduced pre-equilibrium effects.

doi: 10.1209/epl/i2006-10040-x
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2006VI01      Phys.Lett. B 637, 176 (2006)

V.E.Viola, K.Kwiatkowski, S.J.Yennello, J.B.Natowitz

Comment on breakup densities of hot nuclei

NUCLEAR REACTIONS 197Au(α, X), E=200 MeV; 197Au(14N, X), E=20-100 MeV/nucleon; 197Au(3He, X), E=4.8 GeV; 197Au(π-, X), E at 8 GeV/c; analyzed intermediate mass fragment multiplicities; deduced breakup densities.

doi: 10.1016/j.physletb.2006.04.034
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2006VI07      Phys.Rep. 434, 1 (2006)

V.E.Viola, K.Kwiatkowski, L.Beaulieu, D.S.Bracken, H.Breuer, J.Brzychczyk, R.T.de Souza, D.S.Ginger, W.-C.Hsi, R.G.Korteling, T.Lefort, W.G.Lynch, K.B.Morley, R.Legrain, L.Pienkowski, E.C.Pollacco, E.Renshaw, A.Ruangma, M.B.Tsang, C.Volant, G.Wang, S.J.Yennello, N.R.Yoder

Light ion-induced multifragmentation: The ISiS project

NUCLEAR REACTIONS 197Au(p, X), (p-bar, X), (π-, X), E at 5-15 GeV/c; Ag, 197Au(3He, X), E=2-5 GeV; measured fragment energies, yields, multiplicity, charge, and angular distributions; deduced phase transition features.

doi: 10.1016/j.physrep.2006.07.005
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2006VI08      Eur.Phys.J. A 30, 215 (2006)

V.E.Viola, R.Bougault

Calorimetry

doi: 10.1140/epja/i2006-10118-5
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2004BR15      Phys.Rev. C 69, 034612 (2004)

D.S.Bracken, K.Kwiatkowski, E.Renshaw Foxford, K.B.Morley, V.E.Viola, N.R.Yoder, J.Brzychczyk, E.C.Pollacco, R.Legrain, C.Volant, R.G.Korteling, H.Breuer

Moving-source and caloric-curve analyses of reactions induced by 1.8-4.8 GeV 3He beams on natAg and 197Au nuclei

NUCLEAR REACTIONS Ag, 197Au(3He, X), E=1.8-4.8 GeV; measured fragment charge distributions, isotopic yield ratios; deduced source features. Moving-source and caloric-curve analyses.

doi: 10.1103/PhysRevC.69.034612
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2004HU16      Phys.Rev. C 70, 031601 (2004)

S.Hudan, R.Alfaro, L.Beaulieu, B.Davin, Y.Larochelle, T.Lefort, V.E.Viola, H.Xu, R.Yanez, R.T.de Souza, R.J.Charity, L.G.Sobotka, T.X.Liu, X.D.Liu, W.G.Lynch, R.Shomin, W.P.Tan, M.B.Tsang, A.Vander Molen, A.Wagner, H.F.Xi

Interplay of initial deformation and Coulomb proximity on nuclear decay

NUCLEAR REACTIONS 92Mo(114Cd, X), E=50 MeV/nucleon; measured Eα, angular distributions following projectile-like fragment decay; deduced deformation and orientation effects, related reaction mechanism features.

doi: 10.1103/PhysRevC.70.031601
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2004LI08      Phys.Rev. C 69, 014603 (2004)

T.X.Liu, M.J.van Goethem, X.D.Liu, W.G.Lynch, R.Shomin, W.P.Tan, M.B.Tsang, G.Verde, A.Wagner, H.F.Xi, H.S.Xu, M.Colonna, M.Di Toro, M.Zielinska-Pfabe, H.H.Wolter, L.Beaulieu, B.Davin, Y.Larochelle, T.Lefort, R.T.de Souza, R.Yanez, V.E.Viola, R.J.Charity, L.G.Sobotka

Isotope yields from central 112, 124Sn + 112, 124Sn collisions: Dynamical emission?

NUCLEAR REACTIONS 112,124Sn(112Sn, X), (124Sn, X), E=50 MeV/nucleon; measured light fragment isotopic yields; deduced reaction mechanism features. Stochastic mean field calculations.

doi: 10.1103/PhysRevC.69.014603
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2004TS01      Phys.Rev.Lett. 92, 062701 (2004)

M.B.Tsang, T.X.Liu, L.Shi, P.Danielewicz, C.K.Gelbke, X.D.Liu, W.G.Lynch, W.P.Tan, G.Verde, A.Wagner, H.S.Xu, W.A.Friedman, L.Beaulieu, B.Davin, R.T.de Souza, Y.Larochelle, T.Lefort, R.Yanez, V.E.Viola, Jr., R.J.Charity, L.G.Sobotka

Isospin Diffusion and the Nuclear Symmetry Energy in Heavy Ion Reactions

NUCLEAR REACTIONS 112,124Sn(112Sn, X), (124Sn, X), E=50 MeV/nucleon; measured Z=1-8 fragments isotopic yields; deduced isospin diffusion effects. Transport model calculations.

doi: 10.1103/PhysRevLett.92.062701
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2004TU04      Phys.Rev. C 70, 014608 (2004)

S.Turbide, L.Beaulieu, P.Danielewicz, V.E.Viola, R.Roy, K.Kwiatkowski, W.-C.Hsi, G.Wang, T.Lefort, D.S.Bracken, H.Breuer, E.Cornell, F.Gimeno-Nogues, D.S.Ginger, S.Gushue, R.Huang, R.Korteling, W.G.Lynch, K.B.Morley, E.Ramakrishnan, L.P.Remsberg, D.Rowland, M.B.Tsang, H.Xi, S.J.Yennello

Effects of in-medium cross sections and optical potential on thermal-source formation in p + 197Au reactions at 6.2-14.6 GeV/c

NUCLEAR REACTIONS 197Au(p, X), E at 6.4-14.6 GeV/c; measured light charged particle spectra, yields, charge distributions; deduced reaction mechanism features. Transport model.

doi: 10.1103/PhysRevC.70.014608
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2004VI03      Nucl.Phys. A734, 487 (2004)

V.E.Viola

The Nuclear Liquid-Gas Phase Transition: Q.E.D

doi: 10.1016/j.nuclphysa.2004.01.091
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2004VI10      Phys.Rev.Lett. 93, 132701 (2004)

V.E.Viola, K.Kwiatkowski, J.B.Natowitz, S.J.Yennello

Breakup Densities of Hot Nuclei

NUCLEAR REACTIONS 197Au(α, X), E=200 MeV; 197Au(14N, X), E=20-100 MeV/nucleon; 197Au(3He, X), E=4.8 GeV; analyzed intermediate mass fragment spectra; deduced breakup densities.

doi: 10.1103/PhysRevLett.93.132701
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2003YA06      Phys.Rev. C 68, 011602 (2003)

R.Yanez, S.Hudan, R.Alfaro, B.Davin, Y.Larochelle, H.Xu, L.Beaulieu, T.Lefort, V.E.Viola, R.T.de Souza, T.X.Liu, X.D.Liu, W.G.Lynch, R.Shomin, W.P.Tan, M.B.Tsang, A.Vander Molen, A.Wagner, H.F.Xi, R.J.Charity, L.G.Sobotka

Excitation and decay of projectilelike fragments formed in dissipative peripheral collisions at intermediate energies

NUCLEAR REACTIONS 92Mo(114Cd, X), E=50 MeV/nucleon; measured Ep, Eα, projectile-like fragments energy, angle, and charge distributions; deduced role of velocity dissipation, other reaction mechanism features.

doi: 10.1103/PhysRevC.68.011602
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2002BB19      Acta Phys.Hung.N.S. 15, 417 (2002)

W.Bauer, M.Kleine Berkenbusch, L.Beaulieu, T.Lefort, R.G.Korteling, K.Kwiatkowski, H.Breuer, S.Pratt, W.-c.Hsi, V.E.Viola, S.J.Yennello

Setting Bounds on Critical Exponents with Event-by-Event Analysis of Nuclear Fragmentation Data

NUCLEAR REACTIONS 197Au(p, X), E=10.2 GeV; analyzed fragments charge yield distributions; deduced phase transition features.

doi: 10.1556/APH.15.2002.3-4.24
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2002DA24      Phys.Rev. C66, 044602 (2002)

C.B.Das, S.Das Gupta, L.Beaulieu, T.Lefort, K.Kwiatkowski, V.E.Viola, S.J.Yennello, L.Pienkowski, R.G.Korteling, H.Breuer

Tracking the phase-transition energy in the disassembly of hot nuclei

NUCLEAR REACTIONS 197Au(π-, X), E at 8 GeV/c; analyzed data; deduced phase transition features.

doi: 10.1103/PhysRevC.66.044602
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2002EL02      Phys.Rev.Lett. 88, 042701 (2002)

J.B.Elliott, L.G.Moretto, L.Phair, G.J.Wozniak, L.Beaulieu, H.Breuer, R.G.Korteling, K.Kwiatkowski, T.Lefort, L.Pienkowski, A.Ruangma, V.E.Viola, S.J.Yennello, and the ISiS Collaboration

Liquid to Vapor Phase Transition in Excited Nuclei

NUCLEAR REACTIONS 197Au(π-, X), E at 8 GeV/c; analyzed fragment charge distributions, mass yields, related data; deduced phase transition features. Fisher's model scaling.

doi: 10.1103/PhysRevLett.88.042701
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2002KL01      Phys.Rev.Lett. 88, 022701 (2002)

M.Kleine Berkenbusch, W.Bauer, K.Dillman, S.Pratt, L.Beaulieu, K.Kwiatkowski, T.Lefort, W.-C.Hsi, V.E.Viola, S.J.Yennello, R.G.Korteling, H.Breuer

Event-by-Event Analysis of Proton-Induced Nuclear Multifragmentation: Determination of the phase transition university class in a system with extreme finite-size constraints

NUCLEAR REACTIONS 197Au(p, X), E at 10.2 GeV/c; analyzed fragment yields; deduced phase transition features. Percolation model.

doi: 10.1103/PhysRevLett.88.022701
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2002PI11      Phys.Rev. C65, 064606 (2002)

L.Pienkowski, K.Kwiatkowski, T.Lefort, W.-C.Hsi, L.Beaulieu, V.E.Viola, A.Botvina, R.G.Korteling, R.Laforest, E.Martin, E.Ramakrishnan, D.Rowland, A.Ruangma, E.Winchester, S.J.Yennello, B.Back, H.Breuer, S.Gushue, L.P.Remsberg

Breakup Time Scale Studied in the 8 GeV/c π- + 197Au Reaction

NUCLEAR REACTIONS 197Au(π-, X), E at 8 GeV/c; measured fragments charge, energy, angular distributions; deduced breakup time scale, related reaction mechanism features.

doi: 10.1103/PhysRevC.65.064606
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2002RU12      Phys.Rev. C66, 044603 (2002)

A.Ruangma, R.Laforest, E.Martin, E.Ramakrishnan, D.J.Rowland, M.Veselsky, E.M.Winchester, S.J.Yennello, L.Beaulieu, W.-c.Hsi, K.Kwiatkowski, T.Lefort, V.E.Viola, A.Botvina, R.G.Korteling, L.Pienkowski, H.Breuer, S.Gushue, L.P.Remsberg, B.Back

Caloric curve of 8 GeV/c π-, p-bar + 197Au reactions

NUCLEAR REACTIONS 197Au(p-bar, X), (π-, X), E at 8 GeV/c; measured fragment spectra, yields ratios; deduced caloric curves. Comparison with model predictions.

doi: 10.1103/PhysRevC.66.044603
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2001BE05      Phys.Rev. C63, 031302 (2001)

L.Beaulieu, T.Lefort, K.Kwiatkowski, W.-c.Hsi, L.Pienkowski, R.G.Korteling, R.Laforest, E.Martin, E.Ramakrishnan, D.Rowland, A.Ruangma, V.E.Viola, E.Winchester, S.J.Yennello

Testing Binomial Reducibility and Thermal Scaling in Hadron-Induced Multifragmentation

NUCLEAR REACTIONS 197Au(π-, X), E at 8 Gev/c; measured charged particle energy spectra, n-fold intermediate mass fragment probability distributions and emission times, single fragment emission probability, binomial parameters.

doi: 10.1103/PhysRevC.63.031302
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2001BE63      Phys.Rev. C64, 064604 (2001)

L.Beaulieu, T.Lefort, K.Kwiatkowski, W.-C.Hsi, G.Wang, D.S.Bracken, E.Cornell, D.S.Ginger, K.B.Morley, V.E.Viola, F.Gimeno-Nogues, R.Laforest, E.Martin, E.Ramakrishnan, D.Rowland, A.Ruangma, E.Winchester, S.J.Yennello, R.G.Korteling, L.Pienkowski, H.Breuer, B.Back, S.Gushue, L.P.Remsberg, M.J.Huang, W.G.Lynch, M.B.Tsang, H.Xi

Thermal Excitation-Energy Deposition in 5-15 GeV/c Hadron-Induced Reactions with 197Au. II. Relation between Excitation Energy and Reaction Variables

NUCLEAR REACTIONS 197Au(p, X), (p-bar, X), (π-, X), E at 5.0-14.6 GeV/c; measured fragments charge distributions, longitudinal and transverse velocity, multiplicities; deduced source excitation energy, reaction mechanism features.

doi: 10.1103/PhysRevC.64.064604
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2001LE42      Phys.Rev. C64, 064603 (2001)

T.Lefort, L.Beaulieu, K.Kwiatkowski, W.-C.Hsi, V.E.Viola, R.Laforest, E.Martin, E.Ramakrishnan, D.Rowland, A.Ruangma, E.Winchester, S.J.Yennello, L.Pienkowski, R.G.Korteling, H.Breuer

Thermal Excitation-Energy Deposition in 5-15 GeV/c Hadron-Induced Reactions with 197Au. I. Reconstruction of the Thermal Source Properties

NUCLEAR REACTIONS 197Au(p, X), (p-bar, X), (π-, X), E at 5.0-14.6 GeV/c; measured charged particle spectra, multiplicities, charge distributions; deduced thermal source excitation energy, related features.

doi: 10.1103/PhysRevC.64.064603
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2001VE02      Nucl.Phys. A681, 299c (2001)

G.Verde, H.S.Xu, T.X.Liu, X.D.Liu, W.G.Lynch, W.P.Tan, M.B.Tsang, A.Vander Molen, A.Wagner, H.F.Xi, C.K.Gelbke, L.Beaulieu, B.Davin, Y.Larochelle, T.Lefort, R.T.de Souza, R.Yanez, V.Viola, R.J.Charity, L.G.Sobotka

Isospin Fractionation in Nuclear Fragmentation

NUCLEAR REACTIONS 112,124Sn(112Sn, X), (124Sn, X), E=50 MeV/nucleon; measured light and intermediate fragments isotopic yields; deduced phase transition features.

doi: 10.1016/S0375-9474(00)00531-5
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2001VI02      Nucl.Phys. A681, 267c (2001)

V.E.Viola, T.Lefort, L.Beaulieu, K.Kwiatkowski, G.Wang, R.de Souza, L.Pienkowski, A.Botvina, H.Breuer, D.Durand, R.G.Korteling, R.Laforest, E.Martin, E.Ramakrishnan, D.Rowland, A.Ruangma, E.Winchester, S.J.Yennello

Signals for the Transition from Liquid to Gas in Hot Nuclei

NUCLEAR REACTIONS 197Au(p, X), (p-bar, X), (π-, X), E at 5-15 GeV/c; measured intermediate mass fragments kinetic energy, correlation functions; deduced nuclear phase transition features.

doi: 10.1016/S0375-9474(00)00526-1
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2000BE27      Phys.Rev.Lett. 84, 5971 (2000)

L.Beaulieu, T.Lefort, K.Kwiatkowski, R.T.de Souza, W.-C.Hsi, L.Pienkowski, B.Back, D.D.Bracken, H.Breuer, E.Cornell, F.Gimeno-Nogues, D.S.Ginger, S.Gushue, R.G.Korteling, R.Laforest, E.Martin, K.B.Morley, E.Ramakrishnan, L.P.Remsberg, D.Rowland, A.Ruangma, V.E.Viola, G.Wang, E.Winchester, S.J.Yennello

Signals for a Transition from Surface to Bulk Emission in Thermal Multifragmentation

NUCLEAR REACTIONS 197Au(π-, X), E at 8-9.2 GeV/c; 197Au(p, X), E at 10.2 GeV/c; measured intermediate mass fragments correlation functions vs excitation energy; deduced transition between surface and bulk emission of fragments.

doi: 10.1103/PhysRevLett.84.5971
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2000LE29      Phys.Rev. C62, 031604 (2000)

T.Lefort, L.Beaulieu, A.Botvina, D.Durand, K.Kwiatkowski, W.-c.Hsi, L.Pienkowski, H.Breuer, R.G.Korteling, R.Laforest, E.Martin, E.Ramakrishnan, D.Rowland, A.Ruangma, V.E.Viola, E.Winchester, S.J.Yennello

Thermal Expansion Effects in the 8 GeV/c π- + 197Au Reaction

NUCLEAR REACTIONS 197Au(π-, X), E at 8 GeV/c; measured fragments charge, kinetic energy spectra; deduced thermal expansion effects. Comparison with statistical multifragmentation models.

doi: 10.1103/PhysRevC.62.031604
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2000PO10      Phys.Lett. 482B, 349 (2000)

E.C.Pollacco, J.Brzychczyk, C.Volant, R.Legrain, R.G.Korteling, D.S.Bracken, K.Kwiatkowski, K.B.Morley, E.Renshaw Foxford, V.E.Viola, N.R.Yoder, H.Breuer, J.Cugnon

Evaporation Residue as a Dominant Exit Channel at High Thermal Energies in 3He + Ag Reactions

NUCLEAR REACTIONS Ag(3He, X), E=1.8 GeV; measured fragments energy, mass, coincidences; deduced heavy fragment excitation, reaction mechnism features.

doi: 10.1016/S0370-2693(00)00551-7
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2000XU05      Phys.Rev.Lett. 85, 716 (2000)

H.S.Xu, M.B.Tsang, T.X.Liu, X.D.Liu, W.G.Lynch, W.P.Tan, A.Vander Molen, G.Verde, A.Wagner, H.F.Xi, C.K.Gelbke, L.Beaulieu, B.Davin, Y.Larochelle, T.Lefort, R.T.de Souza, R.Yanez, V.E.Viola, R.J.Charity, L.G.Sobotka

Isospin Fractionation in Nuclear Multifragmentation

NUCLEAR REACTIONS 112,124Sn(112Sn, X), (124Sn, X), E=50 MeV/nucleon; measured light and intermediate fragments isotopic distributions, relative yields; deduced gass phase isotopic distribution, related reaction mechanism features.

doi: 10.1103/PhysRevLett.85.716
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1999BE49      Phys.Lett. 463B, 159 (1999)

L.Beaulieu, K.Kwiatkowski, W.-C.Hsi, T.Lefort, L.Pienkowski, R.G.Korteling, G.Wang, B.Back, D.S.Bracken, H.Breuer, E.Cornell, F.Gimeno-Nogues, D.S.Ginger, S.Gushue, M.J.Huang, R.Laforest, W.G.Lynch, E.Martin, K.B.Morley, L.P.Remsberg, D.Rowland, E.Ramakrishnan, A.Ruangma, M.B.Tsang, V.E.Viola, E.Winchester, H.Xi, S.J.Yennello

Thermal Excitation of Heavy Nuclei with 5-15 GeV/c Antiproton, Proton and Pion Beams

NUCLEAR REACTIONS 197Au(p, X), (p-bar, X), (π-, X), E at 5-15 GeV/c; measured excitation energy spectra, intermediate mass fragments yields.

doi: 10.1016/S0370-2693(99)01016-3
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1999HS01      Phys.Rev. C60, 034609 (1999)

W.-C.Hsi, K.Kwiatkowski, G.Wang, D.S.Bracken, E.Cornell, D.S.Ginger, V.E.Viola, R.G.Korteling, K.B.Morley, R.Huang, W.G.Lynch, M.B.Tsang, H.Xi, F.Gimeno-Nogues, E.Ramakrishnan, D.Rowland, S.J.Yennello, H.Breuer, S.Gushue, L.P.Remsberg, A.Botvina, W.A.Friedman

Exclusive Studies of Angular Distributions in GeV Hadron-Induced Reactions with 197Au

NUCLEAR REACTIONS 197Au(p, X), E at 6-14.6 GeV/c; 197Au(π-, X), E at 5-9.2 GeV/c; measured intermediate mass fragments σ(E, θ), angular correlations; deduced kinematic-focusing origin of sideways peaking. ISiS array.

doi: 10.1103/PhysRevC.60.034609
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1999KW07      Nucl.Phys. (Supplement) A654, 786c (1999)

K.Kwiatkowski, W.-C.Hsi, G.Wang, T.Lefort, D.S.Bracken, E.Cornell, E.Renshaw Foxford, D.S.Ginger, V.E.Viola, N.R.Yoder, R.G.Korteling, E.C.Pollacco, R.Legrain, C.Volant, F.Gimeno-Nogues, R.Laforest, E.Martin, E.Ramakrishnan, D.Rowland, A.Ruangma, E.Winchester, S.J.Yennello, W.G.Lynch, M.B.Tsang, H.Xi, H.Breuer, K.B.Morley, S.Gushue, L.P.Remsberg, L.Pienkowski, J.Brzychczyk, A.Botvina, W.A.Friedman

Multifragmentation with GeV Light-Ion Beams

NUCLEAR REACTIONS 197Au(3He, X), E=4.8 GeV; measured intermediate mass fragment velocities and correlations, compound excitation energy probabilities. 197Au(p-bar, X), E at 8 GeV/c; measured light charged particles and intermediate mass fragments multiplicity distributions. Comparison between both reactions.

doi: 10.1016/S0375-9474(00)88547-4
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1999LE34      Nucl.Phys. A655, 275c (1999)

T.LeFort, K.Kwiatkowski, W.-C.Hsi, L.Beaulieu, V.E.Viola, L.Pienkowski, R.G.Korteling, R.Laforest, E.Martin, E.Ramakrishnan, D.Rowland, A.Ruangma, E.Winchester, S.J.Yennello, S.Gushue, L.P.Remsberg, B.Back, H.Breuer

Heating Nuclei with 8 GeV/c Antiprotons

NUCLEAR REACTIONS 197Au(p-bar, X), (π-, X), E at 8 GeV/c; measured charged-particle multiplicity, intermediate mass fragments energy distributions; deduced energy deposition features.

doi: 10.1016/S0375-9474(99)00213-4
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1999LE53      Phys.Rev.Lett. 83, 4033 (1999)

T.Lefort, K.Kwiatkowski, W.-C.Hsi, L.Pienkowski, L.Beaulieu, B.Back, H.Breuer, S.Gushue, R.G.Korteling, R.Laforest, E.Martin, E.Ramakrishnan, L.P.Remsberg, D.Rowland, A.Ruangma, V.E.Viola, E.Winchester, S.J.Yennello

Heating 197Au Nuclei with 8 GeV/c Antiproton and π- Beams

NUCLEAR REACTIONS 197Au(p-bar, X), (π-, X), E at 8 GeV/c; measured charged particle and intermediate mass fragment multiplicities, energy deposition and excitation energy probabilities, excitation energy and mass distributions of target-like fragments. Intranuclear cascade calculations.

doi: 10.1103/PhysRevLett.83.4033
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1999VI04      Phys.Rev. C59, 2660 (1999)

V.E.Viola, K.Kwiatkowski, W.A.Friedman

Double Isotope-Ratio Thermometers: The influence of emission time scales

NUCLEAR REACTIONS Ag(p, X), E=480 MeV; Xe(p, X), E=300 GeV; Ag, 116,124Sn, 197Au(α, X), E=180, 200 MeV; Ag(14N, X), E=1140 MeV; 197Au(14N, X), E=1400 MeV; analyzed isotope-ratio thermometer data; deduced fragment emission angular dependence, role of emission time scales.

doi: 10.1103/PhysRevC.59.2660
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1999WA10      Phys.Rev. C60, 014603 (1999)

G.Wang, K.Kwiatkowski, D.S.Bracken, E.Renshaw Foxford, W.-C.Hsi, K.B.Morley, V.E.Viola, N.R.Yoder, C.Volant, R.Legrain, E.C.Pollacco, R.G.Korteling, W.A.Friedman, A.Botvina, J.Brzychczyk, H.Breuer

Source Size and Time Dependence of Multifragmentation Induced by GeV 3He Beams

NUCLEAR REACTIONS Ag, 197Au(3He, X), E=1.8, 3.6, 4.8 GeV; measured intermediate mass fragments velocity, angular, charge distributions, correlations; deduced reaction time evolution features. Comparison with expanding emitting source, statistical multifragmentation models.

doi: 10.1103/PhysRevC.60.014603
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1999YA05      Phys.Rev.Lett. 82, 3585 (1999); Comment Phys.Rev.Lett. 85, 2645 (2000)

R.Yanez, T.A.Bredeweg, E.Cornell, B.Davin, K.Kwiatkowski, V.E.Viola, R.T.de Souza, R.Lemmon, R.Popescu

Experimental Evidence for Dynamical Decay of Finite Nuclear Matter

NUCLEAR REACTIONS 232Th(12C, F), E=22 MeV/nucleon; measured intermediate mass fragments energy, charge distributions, correlations with heavy fragments following ternary fission; deduced dynamical decay features.

doi: 10.1103/PhysRevLett.82.3585
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1998BR20      Phys.Rev. C58, R1372 (1998)

J.Brzychczyk, E.C.Pollacco, C.Volant, D.Lacroix, R.Legrain, K.Kwiatkowski, D.S.Bracken, K.B.Morley, E.Renshaw Foxford, V.E.Viola, N.R.Yoder, J.Cugnon, R.G.Korteling, H.Breuer

Diversity of Fragment Sizes in Multifragmentation of Gold Nuclei Induced by Relativistic 3He Ions

NUCLEAR REACTIONS 197Au(3He, X), E=4.8 GeV; measured fragments charge, multiplicity distributions; deduced possible phase transition.

doi: 10.1103/PhysRevC.58.R1372
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1998HS01      Phys.Rev. C58, R13 (1998)

W.-C.Hsi, K.Kwiatkowski, G.Wang, D.S.Bracken, E.Cornell, D.S.Ginger, V.E.Viola, N.R.Yoder, R.G.Korteling, F.Gimeno-Nogues, E.Ramakrishnan, D.Rowland, S.J.Yennello, R.Huang, W.G.Lynch, M.B.Tsang, H.Xi, H.Breuer, K.B.Morley, S.Gushue, L.P.Remsberg, W.A.Friedman, A.Botvina

Sideways-Peaked Angular Distributions in Hadron-Induced Multifragmentation: Shock waves, geometry, or kinematics ?

NUCLEAR REACTIONS 197Au(p, X), E at 6, 10, 12.8, 14.6 GeV/c; 197Au(π-, X), E at 5, 8.2, 9.2 GeV/c; measured intermediate mass fragments σ(θ), multiplicity; deduced kinematic explanation for sideways peaking.

doi: 10.1103/PhysRevC.58.R13
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1998KW01      Nucl.Phys. A630, 168c (1998)

K.Kwiatkowski, W.-C.Hsi, V.E.Viola, G.Wang, D.S.Bracken, H.Breuer, E.Cornell, E.Renshaw Foxford, F.Gimeno-Nogues, D.S.Ginger, S.Gushue, R.G.Korteling, W.G.Lynch, K.B.Morley, E.C.Pollacco, E.Ramakrishnan, L.P.Remsberg, M.B.Tsang, C.Volant, S.J.Yennello, H.Xi, N.R.Yoder, and the ISiS Collaboration

Multifragmentation: Thermal vs. dynamic effects

NUCLEAR REACTIONS Ag, 197Au(3He, X), E=4.8 GeV; analyzed data; deduced reaction thermal features, dynamic effects. Other reactions discussed.

doi: 10.1016/S0375-9474(97)00753-7
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1998KW02      Phys.Lett. 423B, 21 (1998)

K.Kwiatkowski, A.S.Botvina, D.S.Bracken, E.Renshaw Foxford, W.A.Friedman, R.G.Korteling, K.B.Morley, E.C.Pollacco, V.E.Viola, C.Volant

Heating Nuclear Matter with GeV 3He Beams

NUCLEAR REACTIONS Ag, 197Au(3He, X), E=1.8, 3.6, 4.8 GeV; measured intermediate mass fragments, excitation-energy distributions, H, He isotope ratios; deduced heating curve. Multifragmentation models comparisons.

doi: 10.1016/S0370-2693(97)01554-2
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1998WA13      Phys.Rev. C57, R2786 (1998)

G.Wang, K.Kwiatkowski, D.S.Bracken, E.Renshaw Foxford, W.-C.Hsi, R.G.Korteling, R.Legrain, K.B.Morley, E.C.Pollacco, V.E.Viola, C.Volant

Time Scale for Emission of Soft Ejectiles in the Disassembly of Hot Nuclei

NUCLEAR REACTIONS 197Au(3He, X), E=4.8 GeV; measured intermediate mass fragments spectra, fragment-fragment velocity correlations; deduced brekaup time scale related features.

doi: 10.1103/PhysRevC.57.R2786
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1997HS02      Phys.Rev.Lett. 79, 817 (1997)

W.-C.Hsi, K.Kwiatkowski, G.Wang, D.S.Bracken, E.Cornell, D.S.Ginger, V.E.Viola, N.R.Yoder, R.G.Korteling, F.Gimeno-Nogues, E.Ramakrishnan, D.Rowland, S.J.Yennello, M.J.Huang, W.G.Lynch, M.B.Tsang, H.Xi, Y.Y.Chu, S.Gushue, L.P.Remsberg, K.B.Morley, H.Breuer

Formation of Hot Nuclei with GeV p and π- Beams

NUCLEAR REACTIONS 197Au(p, X), E at 6-14.6 GeV/c; 197Au(π-, X), E at 5-9.2 GeV/c; measured charged particles, intermediate mass fragments probability distributions; deduced deposition energy saturation related features. High acceptance detector array.

doi: 10.1103/PhysRevLett.79.817
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1997VI10      Nucl.Phys. A626, 287c (1997)

V.E.Viola, W.-C.Hsi, K.Kwiatkowski, G.Wang, D.S.Bracken, H.Breuer, J.Brzychczyk, Y.Y.Chu, E.Cornell, E.Renshaw Foxford, F.Gimeno-Nogues, D.Ginger, S.Gushue, M.J.Huang, R.G.Korteling, R.Legrain, W.G.Lynch, K.B.Morley, E.C.Pollacco, E.Ramakrishnan, L.P.Remsberg, D.Rowland, M.B.Tsang, C.Volant, H.Xi, S.J.Yennello, N.R.Yoder

Probing the Nuclear EOS with GeV Light-Ion Beams

NUCLEAR REACTIONS 197Au(p, X), E at 6-14.6 GeV/c; 197Au(π-, X), E at 5-9.2 GeV/c; measured light-, intermediate mass fragment multiplicity distributions; deduced deposition energy saturation features. 197Au(3He, X), E=4.8 GeV; measured fragment correlations, excitation energy distributions; deduced reaction mechanism. Multifragmentation.

doi: 10.1016/S0375-9474(97)00549-6
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1997WA06      Phys.Lett. 393B, 290 (1997)

G.Wang, K.Kwiatkowski, K.B.Morley, D.S.Bracken, E.Renshaw Foxford, W.A.Friedman, R.G.Korteling, R.Legrain, E.C.Pollacco, V.E.Viola, C.Volant

Time Dependence of Multifragmentation in Light-Ion-Induced Reactions

NUCLEAR REACTIONS 197Au(3He, X), E=4.8 GeV; measured intermediate mass fragment pairs relative velocity distributions; deduced multifragmentation time-dependence, emission mechanism.

doi: 10.1016/S0370-2693(96)01627-9
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1997ZH20      Phys.Rev. C56, 1918 (1997)

J.Zhang, K.Kwiatkowski, D.Bonser, M.Fatyga, S.D.Coon, K.Stith, V.E.Viola, L.W.Woo, S.J.Yennello

Complex Fragment Emission in the 200-MeV 4He + (nat)Ag, 197Au Reactions

NUCLEAR REACTIONS Ag, 197Au(α, X), E=200 MeV; measured intermediate mass fragment σ(θ, Z), σ(E, Z) for Z=3-8, isotopic differential σ at 20°; deduced reaction mechanism features. Two-component, moving-source fitting procedure.

doi: 10.1103/PhysRevC.56.1918
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1996CH35      Phys.Rev. C54, R2114 (1996)

S.L.Chen, R.T.de Souza, E.Cornell, B.Davin, T.M.Hamilton, D.Hulbert, K.Kwiatkowski, Y.Lou, V.E.Viola, R.G.Korteling, J.L.Wile

Emission of Intermediate Mass Fragments During Fission

NUCLEAR REACTIONS 232Th(α, F), E=200 MeV; measured intermediate mass fission fragments (Z=3-8) energy, σ(θ, E). Coulomb trajectory model.

doi: 10.1103/PhysRevC.54.R2114
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1996MO05      Phys.Rev. C54, 737 (1996)

K.B.Morley, K.Kwiatkowski, D.S.Bracken, E.Renshaw Foxford, V.E.Viola, L.W.Woo, N.R.Yoder, R.Legrain, E.C.Pollacco, C.Volant, R.G.Korteling, H.Breuer, J.Brzychczyk

4π Studies of the 1.8-4.8 GeV 3He + (nat)Ag, 197Au Reactions. I. Energy Deposition

NUCLEAR REACTIONS Ag, 197Au(3He, X), E=1.8-4.8 GeV; measured ejectile multiplicity, total event kinetic energy distributions; deduced deposition energy saturation related features. 4π detector. Intranuclear cascade model.

doi: 10.1103/PhysRevC.54.737
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1996RE12      Phys.Rev. C54, 749 (1996)

E.Renshaw Foxford, K.Kwiatkowski, D.S.Bracken, K.B.Morley, V.E.Viola, N.R.Yoder, C.Volant, E.C.Pollacco, R.Legrain, R.G.Korteling, W.A.Friedman, J.Brzychczyk, H.Breuer

4π Studies of the 1.8-4.8 GeV 3He + (nat)Ag, 197Au Reactions. II. Multifragmentation

NUCLEAR REACTIONS Ag, 197Au(3He, X), E=1.8-4.8 GeV; measured intermediate mass fragment multiplicity, σ(fragment θ, E); deduced emission mechanism. 4π detector array.

doi: 10.1103/PhysRevC.54.749
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1996WA07      Phys.Rev. C53, 1811 (1996)

G.Wang, K.Kwiatkowski, V.E.Viola, W.Bauer, P.Danielewicz

Cavitation and Penetration in Central Collisions with Light Ions

NUCLEAR REACTIONS 197Au(3He, X), E=4.8 GeV; 197Au(p, X), E=5 GeV; 108Ag(3He, X), E ≤ 6 GeV; calculated density profiles time evolution related features. Ag(3He, X), E=1.8-4.8 GeV; calculated intermediate mass fragment multiplicity distributions. BUU calculations.

doi: 10.1103/PhysRevC.53.1811
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1995KW01      Phys.Rev.Lett. 74, 3756 (1995)

K.Kwiatkowski, K.B.Morley, E.Renshaw Foxford, D.S.Bracken, V.E.Viola, N.R.Yoder, R.Legrain, E.C.Pollacco, C.Volant, W.A.Friedman, R.G.Korteling, J.Brzychczyk, H.Breuer

Multifragmentation in the 4.8-GeV 3He + (nat)Ag, 197Au Reactions

NUCLEAR REACTIONS Ag, 197Au(3He, X), E=4.8 GeV; measured intermediate mass fragment multiplicity distributions; deduced emitting source kinetic equilibrium features. Rapidity, moving source analyses.

doi: 10.1103/PhysRevLett.74.3756
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1995KW02      Nucl.Instrum.Methods Phys.Res. A360, 571 (1995)

K.Kwiatkowski, D.S.Bracken, K.B.Morley, J.Brzychczyk, E.Renshaw Foxford, K.Komisarcik, V.E.Viola, N.R.Yoder, J.Dorsett, J.Poehlman, N.Madden, J.Ottarson

The Indiana Silicon Sphere 4π Charged-Particle Detector Array

NUCLEAR REACTIONS 197Au, Ag(3He, X), E=1.8-4.8 GeV; measured intermediate mass fragment multiplicity, charge, thermal energy, distributions. Silicon sphere 4π charged particle detector array.

doi: 10.1016/0168-9002(95)00011-9
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1995MO34      Phys.Lett. 355B, 52 (1995)

K.B.Morley, K.Kwiatkowski, D.S.Bracken, H.Breuer, J.Brzychczyk, R.G.Korteling, R.Legrain, E.C.Pollacco, E.Renshaw Foxford, V.Viola, C.Volant, L.W.Woo, N.R.Yoder

Saturation of Deposition Energy in Relativistic 3He-Induced Reactions

NUCLEAR REACTIONS Hg, 197Au(3He, X), E=1.8-4.8 GeV; measured intermediate mass fragment, light charged particle production, multiplicities; deduced deposition energy saturation features. Intranuclear cascade model predictions.

doi: 10.1016/0370-2693(95)00625-U
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1994KW01      Phys.Rev. C49, 1516 (1994)

K.Kwiatkowski, W.A.Friedman, L.W.Woo, V.E.Viola, E.C.Pollacco, C.Volant, S.J.Yennello

Energy Dissipation and Multifragment Decay in the 3He + (nat)Ag System

NUCLEAR REACTIONS Ag(3He, X), E ≈ 0.2-3.6 GeV; calculated fragment multiplicity, charge distributions, σ(E(12C), θ(12C)); deduced Δ role in energy dissipation. Intranuclear cascade followed by an expanding emitting source.

doi: 10.1103/PhysRevC.49.1516
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1994KW04      Nucl.Instrum.Methods Phys.Res. A353, 212 (1994)

K.Kwiatkowski, A.Alexander, D.S.Bracken, J.Brzychczyk, J.Dorsett, R.Ensman, E.Renshaw Foxford, T.Hamilton, K.Komisarcik, K.N.McDonald, K.B.Morley, J.Poehlman, C.Powell, V.E.Viola, N.R.Yoder, J.Ottarson, N.Madden

A 4π Charged-Particle Detector Array for Light-Ion-Induced Nuclear Fragmentation Studies

NUCLEAR REACTIONS Ag, 197Au(3He, X), E=1.8-4.8 GeV; measured particle spectra; deduced He, Li fragments separation, detector characteristics. 4π charged particle detector array.

doi: 10.1016/0168-9002(94)91640-3
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1994LI19      Phys.Rev. C49, 2788 (1994)

M.A.Lisa, W.G.Gong, C.K.Gelbke, N.Carlin, R.T.de Souza, Y.D.Kim, W.G.Lynch, T.Murakami, G.Poggi, M.B.Tsang, H.M.Xu, K.Kwiatkowski, V.E.Viola, Jr., S.J.Yennello

Proton Evaporation Time Scales from Longitudinal and Transverse Two-Proton Correlation Functions

NUCLEAR REACTIONS 27Al(129Xe, X), E=31 MeV/nucleon; analyzed pp-correlations data; deduced evidence for emission from long-lived composite system.

doi: 10.1103/PhysRevC.49.2788
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1994SC15      Phys.Rev. C49, 3316 (1994)

C.Schwarz, W.G.Gong, N.Carlin, C.K.Gelbke, Y.D.Kim, W.G.Lynch, T.Murakami, G.Poggi, R.T.de Souza, M.B.Tsang, H.M.Xu, K.Kwiatkowski, V.E.Viola, S.J.Yennello

Anomalous Populations of Particle-Unbound States in 10B

NUCLEAR REACTIONS 27Al, 197Au(14N, X), E=75 MeV/nucleon; 122Sn, 27Al(129Xe, X), E=31 MeV/nucleon; measured B fragments inclusive yields, (9Be)(p)-correlation functions. 10B deduced particle unstable states relative populations. Statistical calculations.

doi: 10.1103/PhysRevC.49.3316
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1994ZH06      Phys.Lett. 322B, 43 (1994)

F.Zhu, M.J.Huang, W.G.Lynch, T.Murakami, Y.D.Kim, T.K.Nayak, R.Pelak, M.B.Tsang, H.M.Xu, W.G.Gong, K.Kwiatkowski, R.Planeta, S.Rose, V.E.Viola, Jr., L.W.Woo, S.Yennello, J.Zhang

Excited State Populations for Equilibrium and Preequilibrium Emission

NUCLEAR REACTIONS Ag(3He, X), E=200 MeV; measured (particle)(particle)-coin; deduced 5,6Li excited state population ratio temperature dependence; deduced forward, backward fragment emission mechanisms difference.

doi: 10.1016/0370-2693(94)90489-8
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1993BR02      Phys.Rev. C47, 1553 (1993)

J.Brzychczyk, D.S.Bracken, K.Kwiatkowski, K.B.Morley, E.Renshaw, V.E.Viola

Isotopic Yields of Intermediate-Mass Fragments Emitted in E/A = 50 MeV 4He + 116,124Sn Reactions

NUCLEAR REACTIONS 116,124Sn(α, X), E=50 MeV/nucleon; measured fragment yields vs mass, σ(fragment θ, Z), σ(fragment θ, E) for Z=3-10. Statistical, accreting source calculations.

doi: 10.1103/PhysRevC.47.1553
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1993GO01      Phys.Rev. C47, R429 (1993)

W.G.Gong, P.Danielewicz, C.K.Gelbke, N.Carlin, R.T.de Souza, Y.D.Kim, W.G.Lynch, T.Murakami, G.Poggi, M.B.Tsang, H.M.Xu, S.Pratt, K.Kwiatkowski, V.E.Viola, Jr., S.J.Yennello, J.C.Shillcock

Two-Deuteron Correlation Functions in 14N + 27Al Collisions at E/A = 75 MeV

NUCLEAR REACTIONS 27Al(14N, X), E=75 MeV/nucleon; measured dd-, pp-correlation functions; deduced ejectile time span differences. Microscopic transport model.

doi: 10.1103/PhysRevC.47.R429
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1993SC21      Phys.Rev. C48, 676 (1993)

C.Schwarz, W.G.Gong, N.Carlin, C.K.Gelbke, Y.D.Kim, W.G.Lynch, T.Murakami, G.Poggi, R.T.de Souza, M.B.Tsang, H.M.Xu, D.E.Fields, K.Kwiatkowski, V.E.Viola, Jr., S.J.Yennello

Emission Temperatures from Widely Separated States in 14N- and 129Xe-Induced Reactions

NUCLEAR REACTIONS 27Al, 197Au(14N, X), E=75 MeV/nucleon; 27Al, 122Sn(129Xe, X), E=31 MeV/nucleon; measured light charged particle relative momentum correlation functions, inclusive σ(fragment θ, E) for α, 6Li, 7Be; deduced nuclear temperatures of 4He, 5Li, and 8Be.

doi: 10.1103/PhysRevC.48.676
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1993VI03      Phys.Rev. C47, 3001 (1993)

V.E.Viola, K.Kwiatkowski, H.Breuer, R.Planeta

Comment on ' Energy Partition in Near-Barrier Strongly Damped Collisions 58Ni + 208Pb '

NUCLEAR REACTIONS 208Pb(58Ni, X), E=6.5 MeV/nucleon; analyzed data; deduced nonvalidity of previous conclusions regarding energy partition.

doi: 10.1103/PhysRevC.47.3001
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1993WO01      Phys.Rev. C47, 267 (1993)

L.W.Woo, K.Kwiatkowski, W.G.Wilson, V.E.Viola, H.Breuer, G.J.Mathews

Cross Sections for A = 6-30 Fragments from the 4He + 28Si Reaction at 117 and 198 MeV

NUCLEAR REACTIONS 28Si(α, X), E=117.4, 198.5 Mev; measured σ(fragment θ, E), fragment mass, energy distribution for mass 6-30; deduced implications to cosmic ray, astrophysics data. Intranuclear cascade, followed by residues statistical decay model analysis.

doi: 10.1103/PhysRevC.47.267
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1993YE01      Phys.Rev. C48, 1092 (1993)

S.J.Yennello, K.Kwiatkowski, E.C.Pollacco, C.Volant, Y.Cassagnou, R.Dayras, D.E.Fields, S.Harar, E.Hourani, R.Legrain, E.Norbeck, R.Planeta, J.L.Wile, N.R.Yoder, V.E.Viola

Studies of Intermediate-Mass Fragment Emission in the 3He + (nat)Ag, 197Au Reactions between 0.48 and 3.6 GeV

NUCLEAR REACTIONS Ag, 197Au(3He, X), E=0.48-3.6 GeV; measured σ(fragment θ, E) for fragment Z=4-9; deduced energy dissipation, emitting source expansion features. Models comparison.

doi: 10.1103/PhysRevC.48.1092
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1992FI05      Phys.Rev.Lett. 69, 3713 (1992)

D.E.Fields, K.Kwiatkowski, K.B.Morley, E.Renshaw, J.L.Wile, S.J.Yennello, V.E.Viola, R.G.Korteling

Neck Emission of Intermediate-Mass Fragments in the Fission of Hot Heavy Nuclei

NUCLEAR REACTIONS 232Th(3He, F), E=270 MeV; measured fission fragment spectra, (fragment)(fragment)(θ); deduced neck emission of intermediate mass fission fragments.

doi: 10.1103/PhysRevLett.69.3713
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1992WI04      Phys.Rev. C45, 2300 (1992)

J.L.Wile, D.E.Fields, K.Kwiatkowski, S.J.Yennello, K.B.Morley, E.Renshaw, V.E.Viola, C.K.Gelbke, W.G.Lynch, N.Carlin, H.M.Xu, W.G.Gong, M.B.Tsang, J.Pochodzalla, R.T.deSouza, D.J.Fields, S.M.Austin

Excitation Functions for Complex Fragment Emission in the E/A = 20-100 MeV 14N + (nag)Ag, 197Au Reactions

NUCLEAR REACTIONS Ag, 197Au(14N, X), E=20-100 MeV/nucleon; measured σ(fragment θ, E); deduced fragment emission mechanism. Three-source model.

doi: 10.1103/PhysRevC.45.2300
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1991GO05      Phys.Rev. C43, 1804 (1991)

W.G.Gong, C.K.Gelbke, W.Bauer, N.Carlin, R.T.de Souza, Y.D.Kim, W.G.Lynch, T.Murakami, G.Poggi, D.P.Sanderson, M.B.Tsang, H.M.Xu, D.E.Fields, K.Kwiatkowski, R.Planeta, V.E.Viola, Jr., S.J.Yennello, S.Pratt

Space-Time Evolution of the Reactions 14N + 27Al, 197Au at E/A = 75 MeV and 129Xe + 27Al, 122Sn at E/A = 31 MeV Probed by Two-Proton Intensity Interferometry

NUCLEAR REACTIONS 27Al, 197Au(14N, 2p), E=75 MeV/nucleon; 27Al, 122Sn(129Xe, 2p), E=31 MeV/nucleon; measured two-proton correlation function; deduced reaction mechanism.

doi: 10.1103/PhysRevC.43.1804
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1991RE07      Phys.Rev. C44, 2618 (1991)

E.Renshaw, S.J.Yennello, K.Kwiatkowski, R.Planeta, L.W.Woo, V.E.Viola

Analyzing Powers and Isotope Ratios for the (nat)Ag(p(pol), Intermediate-Mass Fragment) Reaction at 200 MeV

NUCLEAR REACTIONS Ag(polarized p, X), E=200 MeV; measured σ(fragment θ, E), analyzing power vs θ, fragment Z=3-11, mass=6-15; deduced charge distribution. Coalesence, accreting source analyses.

doi: 10.1103/PhysRevC.44.2618
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1991WI16      Phys.Lett. 264B, 26 (1991)

J.L.Wile, D.E.Fields, K.Kwiatkowski, K.B.Morley, E.Renshaw, S.J.Yennello, V.E.Viola, N.Carlin, C.K.Gelbke, W.G.Gong, W.G.Lynch, R.T.de Souza, M.B.Tsang, H.M.Xu

Complex Fragment Emission in the E/A = 60-100 MeV 14N + (nat)Ag, 197Au Reactions

NUCLEAR REACTIONS Ag, 197Au(14N, X), E=60-100 MeV/nucleon; measured fragment production σ(E) for fragment Z=3-15. Three-source model.

doi: 10.1016/0370-2693(91)90697-O
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1991YE04      Phys.Rev.Lett. 67, 671 (1991)

S.J.Yennello, E.C.Pollacco, K.Kwiatkowski, C.Volant, R.Dayras, Y.Cassagnou, R.Legrain, E.Norbeck, V.E.Viola, J.L.Wile, N.R.Yoder

Multifragment Emission in Reactions Induced by 0.90 and 3.6 GeV 3He Ions on (nat)Ag

NUCLEAR REACTIONS Ag(3He, X), E=0.9, 3.6 GeV; measured intermediate mass fragment multiplicities, σ(fragment θ), σ(fragment, E); deduced emitting source Coulomb field modification.

doi: 10.1103/PhysRevLett.67.671
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1991ZH14      Phys.Rev. C44, R582 (1991)

F.Zhu, W.G.Lynch, T.Murakami, C.K.Gelbke, Y.D.Kim, T.K.Nayak, R.Pelak, M.B.Tsang, H.M.Xu, W.G.Gong, W.Bauer, K.Kwiatkowski, R.Planeta, S.Rose, V.E.Viola, Jr., L.W.Woo, S.Yennello, J.Zhang

Light Particle Correlations for the 3He + Ag Reaction at 200 MeV

NUCLEAR REACTIONS Ag(3He, 2pX), E=200 MeV; measured σ(Ep, θp), proton-proton correlation; deduced nuclear reaction source size, energy dependence.

doi: 10.1103/PhysRevC.44.R582
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1990GO16      Phys.Lett. 246B, 21 (1990)

W.G.Gong, C.K.Gelbke, N.Carlin, R.T.de Souza, Y.D.Kim, W.G.Lynch, T.Murakami, G.Poggi, D.Sanderson, M.B.Tsang, H.M.Xu, D.E.Fields, K.Kwiatkowski, R.Planeta, V.E.Viola, Jr., S.J.Yennello, S.Pratt

Two-Proton Correlation Functions for Equilibrium and Non-Equilibrium Emission

NUCLEAR REACTIONS 122Sn, 197Au, 27Al(129Xe, 2p), E=31 MeV/nucleon; measured 2p-correlation functions; deduced emission process time scale differences.

doi: 10.1016/0370-2693(90)91301-Q
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1990GO32      Phys.Rev.Lett. 65, 2114 (1990)

W.G.Gong, W.Bauer, C.K.Gelbke, N.Carlin, R.T.de Souza, Y.D.Kim, W.G.Lynch, T.Murakami, G.Poggi, D.P.Sanderson, M.B.Tsang, H.M.Xu, S.Pratt, D.E.Fields, K.Kwiatkowski, R.Planeta, V.E.Viola, Jr., S.J.Yennello

Intensity-Interferometric Test of Nuclear Collision Geometries Obtained from the Boltzmann-Uehling-Uhlenbeck Equation

NUCLEAR REACTIONS 27Al(14N, X), E=75 MeV/nucleon; measured pp-correlation. Boltzmann-Uehling-Uhlenbeck equation based analysis.

doi: 10.1103/PhysRevLett.65.2114
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1990KW01      Phys.Rev. C41, 958 (1990); Erratum Phys.Rev. C42, 1158 (1990)

K.Kwiatkowski, R.Planeta, S.H.Zhou, V.E.Viola, H.Breuer, M.A.McMahan, A.C.Mignerey

Heat Partition in the E/A = 8.5 MeV 74Ge + 165Ho Reaction

NUCLEAR REACTIONS 165Ho(74Ge, X), E=8.5 MeV/nucleon; analyzed data; deduced heat partition features. Statistical evaporation model.

doi: 10.1103/PhysRevC.41.958
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1990KW02      Nucl.Instrum.Methods Phys.Res. A299, 166 (1990)

K.Kwiatkowski, K.Komisarcik, J.L.Wile, S.J.Yennello, D.E.Fields, V.E.Viola, B.G.Glagola

A Logarithmic, Large-Solid-Angle Detector Telescope for Nuclear Fragmentation

NUCLEAR REACTIONS 238U(p, F), E=135 MeV; measured fission fragment position spectra. Logarithmic, large solid angle detector telescope.

doi: 10.1016/0168-9002(90)90769-3
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1990PL01      Phys.Rev. C41, 942 (1990); Erratum Phys.Rev C42, 1158 (1990)

R.Planeta, K.Kwiatkowski, S.H.Zhou, V.E.Viola, H.Breuer, M.A.McMahan, W.Kehoe, A.C.Mignerey

Nucleon Exchange Properties of the E/A = 8.5 MeV 74Ge + 165Ho Reaction

NUCLEAR REACTIONS 165Ho(74Ge, X), E=8.5 MeV/nucleon; measured σ(fragment Z, A), (fragment)(fragment)(θ); deduced mass, charge distribution variances. Nucleon exchange model.

doi: 10.1103/PhysRevC.41.942
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1990PO10      Nucl.Phys. A519, 197c (1990)

E.C.Pollacco, C.Volant, R.Dayras, Y.Cassagnou, S.Harar, R.Legrain, C.Mazur, S.J.Yennello, K.Kwiatkowski, N.R.Yoder, V.E.Viola, R.Planeta, J.L.Wile, D.E.Fields, E.Hourani, E.Norbeck

Search for the Onset of Multifragmentation in the Reaction 3He + (nat)Ag

NUCLEAR REACTIONS Ag(3He, X), E=0.48-3.6 GeV; measured σ(fragment θ, E).

doi: 10.1016/0375-9474(90)90626-W
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1990YE02      Phys.Rev. C41, 79 (1990)

S.J.Yennello, K.Kwiatkowski, S.Rose, L.W.Woo, S.H.Zhou, V.E.Viola

Intermediate Mass Fragment Emission in the 161-MeV p + Ag Reaction

NUCLEAR REACTIONS Ag(p, X), E=161 MeV; measured σ(fragment θ, E), σ(fragment Z); deduced reaction mechanism.

doi: 10.1103/PhysRevC.41.79
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1990YE05      Phys.Lett. 246B, 26 (1990)

S.J.Yennello, K.Kwiatkowski, D.E.Fields, R.Planeta, V.E.Viola, Jr., E.C.Pollacco, C.Volant, R.Dayras, R.Legrain, Y.Cassagnou, S.Harar, E.Hourani

Complex Fragment Emission from the 3He + (nat)Ag System between 0.48 and 3.6 GeV

NUCLEAR REACTIONS Ag(3He, X), E=0.48-3.6 GeV; measured σ(fragment θ, E); deduced reaction mechanisms energy dependence.

doi: 10.1016/0370-2693(90)91302-R
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1989FI05      Phys.Lett. 220B, 356 (1989)

D.E.Fields, K.Kwiatkowski, D.Bonser, R.W.Viola, V.E.Viola, W.G.Lynch, J.Pochodzalla, M.B.Tsang, C.K.Gelbke, D.J.Fields, S.M.Austin

Non-Equilibrium versus Equilibrium Emission of Complex Fragments Emitted in 14N Induced Reactions on Ag and Au at E/A = 20-50 MeV

NUCLEAR REACTIONS 197Au, Ag(14N, X), E=20-50 MeV/nucleon; measured σ(fragment θ, E) for fragment Z=3-12; deduced reaction mechanism.

doi: 10.1016/0370-2693(89)90887-3
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1989PL01      Phys.Rev. C39, 1197 (1989)

R.Planeta, K.Kwiatkowski, S.H.Zhou, V.E.Viola, H.Breuer, M.A.McMahan, J.Randrup, A.C.Mignerey

Nucleon Exchange and Heat Partition in Damped Collisions

NUCLEAR REACTIONS 165Ho(74Ge, X), E=8.5 MeV/nucleon; measured fragment charge, mass, energy distribution, (fragment)(fragment)-coin; deduced primary, secondary mass distributions, secondary charge distributions, projectile fragment excitation energy.

doi: 10.1103/PhysRevC.39.1197
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1989SK01      Phys.Lett. 218B, 7 (1989)

W.Skulski, M.Fatyga, K.Kwiatkowski, H.Karwowski, L.W.Woo, V.E.Viola

Emission of Energetic Protons at Backward Angles in Central Collisions

NUCLEAR REACTIONS 238U(3He, xp), E=21-90 MeV/nucleon; measured σ(θ(p), E(p)). 238U(16O, xp), E=20 MeV/nucleon; 238U(α, pX), E=40 MeV/nucleon; 238U(6Li, pX), E=25 MeV/nucleon; analyzed σ(θ(p), E(p)); deduced reaction mechanism. Intranuclear cascade, precompound decay.

doi: 10.1016/0370-2693(89)90465-6
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1989SK04      Phys.Rev. C40, 1279 (1989)

W.Skulski, M.Fatyga, H.J.Karwowski, K.Kwiatkowski, V.E.Viola, Jr., K.Hicks, R.Ristinen

Linear Momentum Transfer in the Reaction of 64-269 MeV 3He with 238U

NUCLEAR REACTIONS 238U(3He, F), E=64-269 MeV; measured fission (fragment)(light particle)-coin; deduced linear momentum transfer, missing momentum.

doi: 10.1103/PhysRevC.40.1279
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1988BE33      Phys.Rev. C38, 1207 (1988)

D.R.Benton, H.Breuer, F.Khazaie, K.Kwiatkowski, V.E.Viola, S.Bradley, A.C.Mignerey, A.P.Weston-Dawkes

Distribution of Excitation Energy in the 505 MeV 56Fe + 165Ho Reaction

NUCLEAR REACTIONS 165Ho(56Fe, X), E=505 MeV; measured fragment mass, charge, angle, energy; deduced excitation energy averages, widths vs energy loss, mass distribution, pre-evaporation fragment mass and charge. Coincidence method. Evaporation code.

doi: 10.1103/PhysRevC.38.1207
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1988DE13      Phys.Rev. C37, 1783 (1988)

R.T.de Souza, W.U.Schroder, J.R.Huizenga, R.Planeta, K.Kwiatkowski, V.E.Viola, H.Breuer

Evolution of Mass and Charge Asymmetry in Damped Heavy-Ion Reactions

NUCLEAR REACTIONS 238U(40Ca, X), (48Ca, X), (58Ni, X), (64Ni, X), E=8.5 MeV/nucleon; measured fragment spectra; deduced fragment Z, N first, second moments.

doi: 10.1103/PhysRevC.37.1783
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1988PL01      Phys.Rev. C38, 195 (1988)

R.Planeta, S.H.Zhou, K.Kwiatkowski, W.G.Wilson, V.E.Viola, H.Breuer, D.Benton, F.Khazaie, R.J.McDonald, A.C.Mignerey, A.Weston-Dawkes, R.T.de Souza, J.R.Huizenga, W.U.Schroder

N/Z Equilibration in Damped Collisions Induced by E/A = 8.5 MeV 58Ni and 64Ni on 238U

NUCLEAR REACTIONS 238U(58Ni, X), (64Ni, X), E=8.5 MeV/nucleon; measured projectile fragment yields; deduced centroids, variances, correlation coefficients.

doi: 10.1103/PhysRevC.38.195
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1987BE05      Phys.Lett. 185B, 326 (1987)

D.R.Benton, H.Breuer, F.Khazaie, K.Kwiatkowski, V.E.Viola, S.Bradley, A.C.Mignerey, A.P.Weston-Dawkes, R.J.McDonald

Excitation Energy Division in the 9 MeV/Nucleon 56Fe + 165Ho Reaction

NUCLEAR REACTIONS 165Ho(56Fe, X), E=9 MeV/nucleon; measured damped fragment excitation energy distribution centroids, widths. Tof spectrometer, position sensitive gas ionization chamber.

doi: 10.1016/0370-2693(87)91008-2
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1987FA01      Phys.Rev. C35, 568 (1987)

M.Fatyga, H.J.Karwowski, K.Kwiatkowski, L.Nowicki, V.E.Viola, K.Hicks

Linear Momentum Transfer and Light Particle Emission in the E/A = 25 MeV 6Li + 238U Reaction

NUCLEAR REACTIONS 238U(6Li, pF), (6Li, dF), (6Li, tF), (6Li, 3HeF), (6Li, αF), E=150 MeV; measured fission fragment(light particle)-coin, σ(fragment θ, mass) vs linear momentum transfer; deduced complete fussion σ upper limit. Position sensitive multi-wire chamber, surface barrier detector.

doi: 10.1103/PhysRevC.35.568
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1987FA03      Phys.Lett. 185B, 321 (1987)

M.Fatyga, R.C.Byrd, K.Kwiatkowski, W.G.Wilson, L.W.Woo, V.E.Viola, Jr., H.J.Karwowski, J.Jastrzebski, W.Skulski

Source Properties of Intermediate Mass Fragments Emitted in the 270 MeV 3He + 232Th Reaction

NUCLEAR REACTIONS 232Th(3He, X), (3He, F), E=270 MeV; measured fission probability following intermediate mass fragmentation; deduced reaction mechanism. ΔE-E telescopes.

doi: 10.1016/0370-2693(87)91007-0
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1987FA09      Phys.Rev.Lett. 58, 2527 (1987)

M.Fatyga, K.Kwiatkowski, V.E.Viola, W.G.Wilson, M.B.Tsang, J.Pochodzalla, W.G.Lynch, C.K.Gelbke, D.J.Fields, C.B.Chitwood, Z.Chen, T.Nayak

Source Properties of Intermediate-Mass Fragments Emitted in the Reaction 14N + 232Th at E/A = 35 MeV

NUCLEAR REACTIONS 232Th(14N, xF), E=35 MeV/nucleon; measured fission fragment(X)-coin for X=Be, C, O, Ne vs fragment θ, fragment energy spectra; deduced fragment emission θ projectile momentum dependence. Position-sensitive avalanche detectors, ΔE-E silicon telescopes, triple coincidences.

doi: 10.1103/PhysRevLett.58.2527
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1987VI14      Nucl.Phys. A471, 53c (1987)

V.E.Viola

Mechanisms of Momentum and Energy Transfer in Intermediate-Energy Collisions

NUCLEAR REACTIONS 238U(6Li, X), E=25 MeV/nucleon; analyzed momentum transfer data; deduced reaction mechanism. Other data included.

doi: 10.1016/0375-9474(87)90243-0
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1986KW01      Phys.Lett. 171B, 41 (1986)

K.Kwiatkowski, J.Bashkin, H.Karwowski, M.Fatyga, V.E.Viola

Intermediate-Mass-Fragment Production in the Reaction of 200 MeV 3He with Ag

NUCLEAR REACTIONS Ag(3He, X), E=198.6 MeV; measured σ(fragment θ, E, Z); deduced nonequilibrium component. Two-component moving source model.

doi: 10.1016/0370-2693(86)90994-9
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1985FA04      Phys.Rev.Lett. 55, 1376 (1985)

M.Fatyga, K.Kwiatkowski, V.E.Viola, C.B.Chitwood, D.J.Fields, C.K.Gelbke, W.G.Lynch, J.Pochodzalla, M.B.Tsang, M.Blann

Evolution of Nucleus-Nucleus Collision Mechanisms from the Barrier to beyond the Fermi Energy

NUCLEAR REACTIONS 238U(14N, F), E=30-45 MeV/nucleon; 238U(12C, F), E=20-35 MeV/nucleon; 238U(6Li, F), E=30, 35 MeV/nucleon; measured fission (fragment)(fragment)-coin, σ(fragment θ) vs fragment-fragment θ(relative); deduced linear momentum transfer limitation, reaction mechanism.

doi: 10.1103/PhysRevLett.55.1376
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1985FA07      Phys.Rev. C32, 1496 (1985)

M.Fatyga, K.Kwiatkowski, H.J.Karwowski, L.W.Woo, V.E.Viola

Linear Momentum Transfer in 40-150 MeV Proton-Induced Reactions with 238U

NUCLEAR REACTIONS 238U(p, F), E=40, 90, 150 MeV; measured fission (fragment)(fragment)(θ), σ(θ1, θ2); deduced linear momentum transfer distribution. Intranuclear cascade, precompound emission models.

doi: 10.1103/PhysRevC.32.1496
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1985VI04      Phys.Rev. C31, 1550 (1985)

V.E.Viola, K.Kwiatkowski, M.Walker

Systematics of Fission Fragment Total Kinetic Energy Release

NUCLEAR STRUCTURE 52Fe, 49Cr, 46V, 265Db, 283Nh, 286Fl, 296Og, 302120, 128Ba, 186Os, 242Pu, 252No; analyzed fission data; deduced total kinetic energy release Coulomb parameter dependence.

doi: 10.1103/PhysRevC.31.1550
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1985WA15      Phys.Rev. C31, 1934 (1985)

B.J.Wagner, T.E.Ward, V.E.Viola, Jr.

Radiochemical Measurements of 200-MeV Proton-Induced Fission of 133Cs

NUCLEAR REACTIONS 133Cs(p, F)42K/65Ni/66Ni/67Cu/72Zn/77As, E=200 MeV; measured cumulative fission yields of residuals; deduced fission σ. Radiochemical techniques.

doi: 10.1103/PhysRevC.31.1934
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1985WO11      Phys.Rev. C32, 706 (1985)

L.W.Woo, K.Kwiatkowski, S.H.Zhou, V.E.Viola

Cross Sections for He, Li, and Be Isotopes Produced in the α + α Reaction at 198.4 MeV

NUCLEAR REACTIONS 4He(α, α), (α, p), (α, n), (α, nα), (α, d), E=198.4 MeV; measured σ(θ), residuals production σ; deduced optical model parameters, Li nucleosynthesis by galactic cosmic rays.

doi: 10.1103/PhysRevC.32.706
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1984GO03      Phys.Rev. C29, 1595 (1984)

A.Gokmen, H.Breuer, A.C.Mignerey, B.G.Glagola, K.Kwiatkowski, V.E.Viola, Jr.

Fragment Mass, Energy, and Angular Distributions for the 12C(4He, Heavy Ion) Reaction between 49 and 159 MeV

NUCLEAR REACTIONS, ICPND 12C(α, X), E=49, 61, 80, 121, 159 MeV; measured σ(fragment θ, E), fragment production σ(E) for fragment mass 7, 9, 11, 13, reaction σ(E); deduced astrophysical implications.

doi: 10.1103/PhysRevC.29.1595
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1984GO04      Phys.Rev. C29, 1606 (1984)

A.Gokmen, G.J.Mathews, V.E.Viola, Jr.

Intranuclear Cascade and Fermi Breakup Calculations of 1H- and 4He-Induced Reactions on Light Target Nuclei

NUCLEAR REACTIONS, ICPND 12C(α, X), E=61, 80.1, 159.3 MeV; calculated σ(fragment θ) for fragment mass 6-15; 16O(α, X), E=81.9 MeV; calculated σ(fragment θ) for fragment mass 12-19; 16O(p, X), E=75 MeV; 12C(p, X), E=100 MeV; calculated σ(fragment θ) for fragment mass 6-11. 12C(α, X), E=61 MeV; calculated σ(fragment θ, E) for fragment mass A=11, 14; 12C(α, X), E=80.1 MeV; calculated σ(fragment θ, E) for fragment mass A=6, 11; 12C(α, X), E=159.3 MeV; calculated σ(fragment θ) for A=9, 11; 12C(α, X), E=80.1 MeV; calculated σ vs fragment mass.

doi: 10.1103/PhysRevC.29.1606
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