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NSR database version of April 27, 2024.

Search: Author = D.Utley

Found 16 matches.

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1997CI01      Phys.Rev. C55, 264 (1997)

J.Cibor, Z.Majka, T.Kozik, P.Staszel, Z.Sosin, K.Hagel, J.Li, L.Lou, R.Tezkratt, D.Utley, R.Wada, B.Xiao, J.B.Natowitz

Study of the Violent Collisions between ⁶³Cu + ²³²Th at 35 MeV/nucleon

NUCLEAR REACTIONS ²³²Th(⁶³Cu, X), (⁶³Cu, F), E=35 MeV/nucleon; measured fission (fragment)(fragment)(θ), intermediate mass fragment-, neutron-, α-multiplicities; deduced hot, heavy composite nuclei decay, other aspects.

doi: 10.1103/PhysRevC.55.264
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1997MD01      Nucl.Phys. A627, 137 (1997)

N.Mdeiwayeh, R.Wada, K.Hagel, J.Li, Y.Lou, R.Tezkratt, D.Utley, B.Xiao, J.B.Natowitz, J.Cibor, Z.Majka

The Dependence of Fission Time-Scales on Fragment Mass Asymmetry in the ²⁰Ne + ¹⁶⁵Ho Reaction at 50A MeV

NUCLEAR REACTIONS ¹⁶⁵Ho(²⁰Ne, F), E=50 MeV/nucleon; fission (fragment)(α)-coin, multiplicities; deduced compound nucleus initial, scission energies. ¹⁷⁸W deduced pre-scission times at high excitation. Monte Carlo simulation.

doi: 10.1016/S0375-9474(97)00408-9
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1997WA01      Phys.Rev. C55, 227 (1997)

R.Wada, R.Tezkratt, K.Hagel, F.Haddad, A.Kolomiets, Y.Lou, J.Li, M.Shimooka, S.Shlomo, D.Utley, B.Xiao, N.Mdeiwayeh, J.B.Natowitz, Z.Majka, J.Cibor, T.Kozik, Z.Sosin

Excitation Energies and Temperatures of Hot Nuclei Produced in the Reactions of ⁶³Cu + ¹⁹⁷Au at 35A MeV

NUCLEAR REACTIONS ¹⁹⁷Au(⁶³Cu, X), E=35 MeV/nucleon; measured energy, multiplicity of n, p, d, t, ³He, α, intermediate mass fragment (Z ≤ 10) heavy fragments (60 ≤ A ≤ 170)-coin, mass and velocity of heavy fragments; deduced temperatures, excitation energies of primary heavy fragments. Dynamical plus statistical model, QMD model simulations.

doi: 10.1103/PhysRevC.55.227
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1996CI07      Phys.Lett. 383B, 372 (1996)

M.Cinausero, G.Prete, D.Fabris, G.Nebbia, G.Viesti, G.X.Dai, K.Hagel, J.Li, Y.Lou, J.B.Natowitz, D.Utley, R.Wada, N.Gelli, F.Lucarelli, M.Colonna

Entrance Channel Mass Asymmetry and the Decay of Hot Nuclei

NUCLEAR REACTIONS ⁷⁶Ge(⁸⁶Kr, X), E=10 MeV/nucleon; ¹⁵⁰Sm(¹⁶O, X), E=27 MeV/nucleon; measured α(evaporation residue)-coin, Eα, Iα; ¹⁰⁰Mo(⁶⁰Ni, X), E=655 MeV; analyzed data; deduced α-decay entrance channel mass asymmetry independence.

doi: 10.1016/0370-2693(96)00793-9
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1995DA33      Chin.J.Nucl.Phys. 17, No 3, 228 (1995)

G.X.Dai, J.B.Natowitz, R.Wada, K.Hagel, Q.Z.Luo, Z.Y.He, J.Blackadar, S.Lee, J.T.Li, Y.N.Lou, D.Utley, B.Xiao

Projectile Fragmentation in ²⁰Ne + ¹⁶⁵Ho Reaction at 45 MeV/u

NUCLEAR REACTIONS ¹⁶⁵Ho(²⁰Ne, X), E at 45 MeV/nucleon; measured fragment velocity energy, spectra for ^3,4He, ⁶Li, ^7,9Be, ¹⁰B, ¹²C, ¹⁴N, ¹⁶O; measured Fermi momentum reduced width. Projectile fragmentation.

1995LO02      Nucl.Phys. A581, 373 (1995)

Y.Lou, M.Gonin, R.Wada, K.Hagel, J.Li, B.Xiao, M.Gui, D.Utley, R.Tezkratt, L.Cooke, T.Botting, B.Hurst, D.O'Kelly, G.Mouchaty, R.P.Schmitt, W.Turmel, J.B.Natowitz, D.Fabris, G.Nebbia, G.Viesti, J.Ruiz, R.Burch, F.Gramegna, M.Poggi, G.Prete, M.E.Brandan, A.Menchaca-Rocha

Light-Particle Evaporation as a Function of Neutron Excess for Medium-Mass Compound Nuclei with E(x) ≈ 2 MeV/u

NUCLEAR REACTIONS ^92,100Mo(⁶³Cu, F), E=10 MeV/nucleon; ^144,148,154Sm(²⁰Ne, F), E=20 MeV/nucleon; measured fission (fragment)α-coin, proton, neutron, α-multiplicities, mass, total kinetic energy, linear momentum transfer distributions; deduced dynamic fission role. Statistical model analysis.

doi: 10.1016/0375-9474(94)00482-3
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1995SC55      Nucl.Instrum.Methods Phys.Res. A354, 487 (1995)

R.P.Schmitt, L.Cooke, G.Derrig, D.Fabris, B.Hurst, J.B.Natowitz, G.Nebbia, D.O'Kelly, B.K.Srivastava, W.Turmel, D.Utley, H.Utsunomiya, R.Wada

A Flexible 4π Neutron Detector for In-Beam Studies: The Texas A and M neutron ball

RADIOACTIVITY ²⁵²Cf(SF); measured neutron multiplicity distribution; deduced detector response. 4π ' neutron ball '. Monte Carlo simulations.

doi: 10.1016/0168-9002(94)01029-3
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1994HA34      Phys.Rev. C50, 2017 (1994)

K.Hagel, M.Gonin, R.Wada, J.B.Natowitz, F.Haddad, Y.Lou, M.Gui, D.Utley, B.Xiao, J.Li, G.Nebbia, D.Fabris, G.Prete, J.Ruiz, D.Drain, B.Chambon, B.Cheynis, D.Guinet, X.C.Hu, A.Demeyer, C.Pastor, A.Giorni, A.Lleres, P.Stassi, J.B.Viano, P.Gonthier

Violent Collisions and Multifragment Final States in the ⁴⁰Ca + ⁴⁰Ca Reaction at 35 MeV/nucleon

NUCLEAR REACTIONS ⁴⁰Ca(⁴⁰Ca, X), (⁴⁰Ar, X), E=35 MeV/nucleon; measured fragment yield distributions, energy spectra, σ(fragment, θ), charged particle, neutron multiplicity; deduced charge distribution moments, multi-fragment probability, inpact parameter distributions. Quantum molecular dynamics model analysis. AMPHORA 4π charged particle detector, neutron ball.

doi: 10.1103/PhysRevC.50.2017
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1994UT01      Phys.Rev. C49, R1737 (1994)

D.Utley, R.Wada, K.Hagel, J.Li, X.Bin, M.Gui, Y.Lou, R.Tezkratt, J.B.Natowitz, M.Gonin

Excitation Energy Deposition in Central Collisions of 40A MeV ⁴⁰Ar with ²³²Th

NUCLEAR REACTIONS ²³²Th(⁴⁰Ar, X), E=40 MeV/nucleon; measured (fragment)n-coin; deduced excitation energy deposition features, reaction mechanism.

doi: 10.1103/PhysRevC.49.R1737
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1993GU09      Phys.Rev. C48, 1791 (1993)

M.Gui, K.Hagel, R.Wada, Y.Lou, D.Utley, B.Xiao, J.Li, J.B.Natowitz, G.Enders, W.Kuhn, V.Metag, R.Novotny, O.Schwalb, R.J.Charity, R.Freifelder, A.Gobbi, W.Henning, K.D.Hildenbrand, R.Mayer, R.S.Simon, J.P.Wessels, G.Casini, A.Olmi, A.A.Stefanini

Mass Asymmetry Dependence of Scission Times in the Reactions of 18.5 A MeV ¹³⁶Xe + ⁴⁸Ti

NUCLEAR REACTIONS ⁴⁸Ti(¹³⁶Xe, X), (¹³⁶Xe, F), E=18.5 MeV/nucleon; measured (fragment)(fragment)-coin, σ(fragment A) vs total kinetic energy, fission (fragment)α-, (fragment)p-coin, multiplicities; deduced energies at scission.

doi: 10.1103/PhysRevC.48.1791
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1993NA14      Phys.Rev. C48, 2074 (1993)

J.B.Natowitz, J.C.Hagel, R.Wada, X.Bin, J.Li, Y.Lou, D.Utley

Intercalibration of ⁴He and ⁵Li Nuclear Thermometers for Hot Nuclei

NUCLEAR STRUCTURE A ≈ 120; analyzed different nuclear temperature determination methods; deduced state ratio method utility, ⁴He, ⁵Li detection based calibration features.

doi: 10.1103/PhysRevC.48.2074
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1992HA09      Phys.Rev.Lett. 68, 2141 (1992)

K.Hagel, M.Gonin, R.Wada, J.B.Natowitz, B.H.Sa, Y.Lou, M.Gui, D.Utley, G.Nebbia, D.Fabris, G.Prete, J.Ruiz, D.Drain, B.Chambon, B.Cheynis, D.Guinet, X.C.Hu, A.Demeyer, C.Pastor, A.Giorni, A.Lleres, P.Stassi, J.B.Viano, P.Gonthier

Multifragmentation of ⁴⁰Ca + ⁴⁰Ca

NUCLEAR REACTIONS ⁴⁰Ca(⁴⁰Ca, X), E=35 MeV/nucleon; measured fragment emission probability vs charge for different number of fragments; deduced multi-fragmentation mechanism. Different models.

doi: 10.1103/PhysRevLett.68.2141
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1992WA05      Nucl.Phys. A539, 316 (1992)

R.Wada, M.Gonin, M.Gui, K.Hagel, Y.Lou, D.Utley, J.B.Natowitz, G.Nebbia, D.Fabris, R.Billerey, B.Cheynis, A.Demeyer, D.Drain, D.Guinet, C.Pastor, L.Vagneron, K.Zaid, J.Alarja, A.Giorni, D.Heuer, C.Morand, B.Viano, C.Mazur, C.Ngo, S.Leray, R.Lucas, M.Ribrag, E.Tomasi

Mechanisms of Non-Equilibrium Light-Particle Emission in ³²S + Ag Reactions at 30 A.MeV

NUCLEAR REACTIONS Ag(³²S, X), E=30 MeV/nucleon; measured (fragment)(fragment)-coin, left-right asymmetries. Moving source fit, recoil effect, classical dynamical model. Solid state detector telescope, CSI(Tl) single crystal detectors.

doi: 10.1016/0375-9474(92)90273-M
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1992WA27      Nucl.Phys. A548, 471 (1992)

R.Wada, M.Gonin, M.Gui, K.Hagel, Y.Lou, D.Utley, B.Xiao, D.Miller, J.B.Natowitz, D.Fabris, G.Nebbia, R.Zanon, B.Chambon, B.Cheynis, A.Demeyer, D.Drain, D.Guinet, X.C.Hu, C.Pastor, K.Zaid, J.Alarja, R.Bertholet, A.Giorni, A.Lleres, C.Morand, P.Stassi, L.Schussler, B.Viano, P.Gonthier

Dynamical Aspects of Intermediate Mass Fragment Emission in the Reactions of ³²S + Ag at 30 A.MeV

NUCLEAR REACTIONS Ag(³²S, X), E=30 MeV/nucleon; measured σ(fragment θ, E), charge distribution of complex fragments, azimuthal angle correction. 4π detector. Statistical model, classical dynamical model calculations.

doi: 10.1016/0375-9474(92)90696-H
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1990NA26      Phys.Lett. 247B, 242 (1990)

J.B.Natowitz, M.Gonin, M.Gui, K.Hagel, Y.Lou, D.Utley, R.Wada

The Determination of Fission Time Scales from Excitation Function Data

NUCLEAR REACTIONS, ICPND ¹⁷⁵Lu, ¹⁹⁷Au, ¹⁶⁵Ho, ¹⁴¹Pr(¹⁶O, F), ¹⁵⁹Tb(²²Ne, F), ¹⁶⁹Tm(¹²C, F), E not given; analyzed fission σ(E); deduced fission probabilities, time distribution.

doi: 10.1016/0370-2693(90)90890-I
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1989GO11      Nucl.Phys. A495, 139c (1989)

M.Gonin, L.Cooke, B.Fornal, P.Gonthier, M.Gui, Y.Lou, J.B.Natowitz, G.Nardelli, G.Nebbia, G.Prete, R.P.Schmitt, B.Srivastava, W.Turmel, D.Utley, H.Utsunomiya, G.Viesti, R.Wada, B.Wilkins, R.Zanon

Thermal Properties and Dynamics of Hot Nuclei

NUCLEAR REACTIONS ¹⁰⁰Mo(⁶⁰Ni, X), E=655 MeV; calculated evaporated particle temperatures, α-, d-, p-, n-spectra. Ag(³²S, X), (¹⁶O, X), E=30 MeV/nucleon; ¹⁵⁴Sm(¹⁴N, X), E=19, 35 MeV/nucleon; calculated α-particle multiplicities.

doi: 10.1016/0375-9474(89)90314-X
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