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NSR database version of May 1, 2024.

Search: Author = D.Sperber

Found 37 matches.

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1993ZI02      Phys.Rev. C47, 1683 (1993)

M.Zielinska-Pfabe, J.Stryjewski, D.Sperber, Ch.Gregoire

Study of a Strongly Damped Collision between Heavy Ions

NUCLEAR REACTIONS 98Mo(98Mo, X), E(cm)=14.7 MeV/nucleon; calculated σ(fragment E, Z), charge variance vs total kinetic energy, mass variance vs time, total kinetic energy. Microscopic, macroscopic model.

doi: 10.1103/PhysRevC.47.1683
Citations: PlumX Metrics


1992SA24      Phys.Rev. C46, 2631 (1992)

S.K.Samaddar, J.N.De, D.Sperber

Realistic Estimate of Incomplete Fusion Excitation Function in Nucleus-Nucleus Collisions

NUCLEAR REACTIONS 200Hg, 40Ca(40Ca, X), E ≤ 60 MeV/nucleon; calculated fusion σ(E). 200Hg(40Ca, X), E ≤ 40 MeV/nucleon; calculated hot residues mass, charge vs E, hot composite maximum angular momentum vs E. Promptly emitted particles model.

doi: 10.1103/PhysRevC.46.2631
Citations: PlumX Metrics


1992SP01      Nuovo Cim. 105A, 47 (1992)

D.Sperber

Some Properties of Hot Nuclear Matter and Hot Nuclei

NUCLEAR STRUCTURE A=200; calculated density profile vs temperature. Thomas-Fermi model, hot nuclei.

doi: 10.1007/BF02730738
Citations: PlumX Metrics


1989SP06      Nucl.Phys. A505, 471 (1989)

D.Sperber, J.Stryjewski

The Role of Wall Dissipation and Collective Inertias in Heavy-Ion Scattering

NUCLEAR REACTIONS 40Ca(40Ca, 40Ca), E(cm)=160-480 MeV; 98Mo(98Mo, 98Mo), E(cm)=400-1200 MeV; 238U(238U, 238U), E(cm)=1-3 GeV; calculated deflection function; deduced wall dissipation, collective inertias role. Classical dynamical model.

doi: 10.1016/0375-9474(89)90386-2
Citations: PlumX Metrics


1987SP08      Phys.Lett. 197B, 507 (1987)

D.Sperber, J.Stryjewski, M.Zielinska-Pfabe

The Role of Collective Intertias in Heavy Ion Fusion

NUCLEAR REACTIONS, ICPND 40Ca(40Ca, X), E not given; calculated fusion σ(E); deduced collective inertia role.

doi: 10.1016/0370-2693(87)91044-6
Citations: PlumX Metrics


1987SP10      Nuovo Cim. 97A, 523 (1987)

D.Sperber

Thermodynamical Treatment of Nuclear Surface Energy

NUCLEAR STRUCTURE 238U; calculated surface energy. Thermodynamical treatment.

doi: 10.1007/BF02735154
Citations: PlumX Metrics


1987SP11      Phys.Scr. 36, 880 (1987)

D.Sperber, J.Stryjewski, M.Zielinska-Pfabe

The Role of Deformations, Inertias, and Wall Friction in Heavy Ion Fusion

NUCLEAR REACTIONS, ICPND 40Ca(40Ca, X), 28Si(28Si, X), 16O(16O, X), 56Fe(56Fe, X), E not given; calculated fusion σ(E); deduced wall friction, inertia, deformations role.

doi: 10.1088/0031-8949/36/6/003
Citations: PlumX Metrics


1987SP12      J.Phys.(Paris), Colloq.C-2, 275 (1987)

D.Sperber, J.Stryjewski, M.Zielinska-Pfabe

Wall Dissipation and the Fusion of 28Si + 28Si and 40Ca + 40Ca

NUCLEAR REACTIONS 28Si(28Si, X), 40Ca(40Ca, X), E ≈ 100-200 MeV; calculated fusion σ(E). Fully dynamical treatment.


1983SA23      Lett.Nuovo Cim. 37, 403 (1983)

B.Samanta, D.Sperber, M.Zielinska-Pfabe

Microscopic Treatment of Pauli Blocking in Strongly Damped Collisions

NUCLEAR REACTIONS 209Bi(136Xe, X), E=940, 1422 MeV; calculated fragment charge, energy distributions; deduced Pauli blocking importance. Strongly damped collisions, dynamical-statistical model.

doi: 10.1007/BF02739665
Citations: PlumX Metrics


1982SA06      Phys.Scr. 25, 517 (1982)

S.K.Samaddar, D.Sperber, M.Zielinska-Pfabe, M.I.Sobel

Role of Thermal Fluctuations in a Classical Dynamical Model for Fission

RADIOACTIVITY, Fission 252Cf(SF); calculated fragment yields, total kinetic energy vs mass, mass, energy distribution moments; deduced thermal fluctuations role. Dynamical model.

doi: 10.1088/0031-8949/25/4/005
Citations: PlumX Metrics


1982SA14      Z.Phys. A306, 307 (1982)

S.K.Samaddar, B.C.Samanta, D.Sperber, M.Zielinska-Pfabe

Dynamical Model for Neck Formation in the Entrance Channel of a Heavy Ion Collision

NUCLEAR REACTIONS 40Ca(40Ca, X), E=186, 266, 506 MeV; 16O(16O, X), E=52, 84, 180 MeV; 84Kr(84Kr, X), E=460, 628, 1132 MeV; 208Pb(208Pb, X), E=1676, 2092, 3340 MeV; calculated neck radius vs L, E, mass, charge. Classical dynamical model.

doi: 10.1007/BF01432371
Citations: PlumX Metrics


1981MO01      Phys.Lett. 98B, 240 (1981)

P.Mooney, W.W.Morison, S.K.Samaddar, D.Sperber, M.Zielinska-Pfabe

Nucleon Spectra in Heavy Ion Collision Prior to Equilibrium

NUCLEAR REACTIONS 197Au(16O, p), E=315 MeV; 197Au(6Li, p), E=74.8 MeV; calculated σ(Ep, θ); deduced prompt, interface localized emission components. Fermi gas model, convection hot spot preequilibrium decay.

doi: 10.1016/0370-2693(81)90005-8
Citations: PlumX Metrics


1981MO04      Phys.Lett. 99B, 205 (1981)

W.W.Morison, S.K.Samaddar, D.Sperber, M.Zielinska-Pfabe

A Classical Dynamical Model for Fusion and Incomplete Fusion in Heavy Ion Collisions

NUCLEAR REACTIONS 159Tb(14N, α), (14N, 5He), (14N, 6He), (14N, 5Li), (14N, 6Li), (14N, 7Li), (14N, 8Li), (14N, 7Be), (14N, 8Be), (14N, 9Be), (14N, 10Be), (14N, 10B), (14N, 11B), (14N, 12B), (14N, 11C), (14N, 12C), (14N, 13C), E=140 MeV; calculated σ(θ), σ(fusion), σ(incomplete fusion) vs incident L. Classical dynamical model, random single particle transfer.

doi: 10.1016/0370-2693(81)91108-4
Citations: PlumX Metrics


1981SA02      Phys.Lett. 98B, 340 (1981)

S.K.Samaddar, D.Sperber, M.Zielinska-Pfabe

Role of Single Particle Transfer in Heavy Ion Fusion

NUCLEAR REACTIONS 27Al(16O, X), E=50, 80, 160, 120 MeV; 109Ag(40Ar, X), E=175, 250, 450 MeV; calculated σ(fusion, E); deduced energy dependence of nucleon transfer effects. Classical dynamical model, random single particle transfer.

doi: 10.1016/0370-2693(81)90920-5
Citations: PlumX Metrics


1981SA03      Phys.Rev. C23, 760 (1981)

S.K.Samaddar, D.Sperber, M.Zielinska-Pfabe, M.I.Sobel, S.I.A.Garpman

Thermal Flucatuations in a Classical Theory with Shape Degrees of Freedom for Heavy Ion Collisions

NUCLEAR REACTIONS 209Bi(136Xe, X), E=1130 MeV; 209Bi(84Kr, X), E=600 MeV; 197Au(63Cu, X), E=443 MeV; calculated σ(fragment θ, E, mass, Z), deflection, function, second moments for energy loss, deflection function, fragment mass. Classical dynamical model, Fokker-Planck equation.

doi: 10.1103/PhysRevC.23.760
Citations: PlumX Metrics


1981SA11      Phys.Scr. 23, 231 (1981)

S.K.Samaddar, A.Sherman, D.Sperber, M.Zielinska-Pfabe, J.N.De

The Role of Deformation, Thermal Fluctuations and Single Particle Transfer in Strongly Damped Collisions

NUCLEAR REACTIONS 209Bi(136Xe, X), E=1130 MeV; 209Bi(84Kr, X), E=600 MeV; calculated σ(fragment Z), deflection function, final kinetic energy vs incident L, σ(fragment θ); deduced role of deformation, thermal fluctuations, single particle transfer. Dynamical model, strongly damped collisions.

doi: 10.1088/0031-8949/23/3/003
Citations: PlumX Metrics


1980GA05      Phys.Lett. 90B, 53 (1980)

S.I.A.Garpman, D.Sperber, M.Zielinska-Pfabe

Nucleon Emission from a Hot Zone in Heavy Ion Reactions

NUCLEAR REACTIONS 154Sm(16O, p), (16O, n), E=153 MeV; 197Au(16O, p), E=315 MeV; calculated σ(Ep, θp), σ(En, θn). Localized hot zone model.

doi: 10.1016/0370-2693(80)90049-0
Citations: PlumX Metrics


1980MO15      Phys.Lett. 93B, 379 (1980)

W.W.Morison, S.K.Samaddar, D.Sperber, M.Zielinska-Pfabe

Nucleon Emission from the Interface of Two Colliding Heavy Ions

NUCLEAR REACTIONS 197Au(16O, p), (16O, n), E=315 MeV; calculated σ(θp, Ep), σ(θn, En). Contact point hot region model.

doi: 10.1016/0370-2693(80)90347-0
Citations: PlumX Metrics


1979GA14      Phys.Lett. 87B, 1 (1979)

S.I.A.Garpman, D.Sperber, M.Zielinska-Pfabe, N.K.Glendenning, Y.Karant

Radiation of Pions from an Expanding Fireball

NUCLEAR REACTIONS K(40Ar, π-), E=350-800 MeV/nucleon; calculated pion multiplicity σ. Expanding fireball model.

doi: 10.1016/0370-2693(79)90002-9
Citations: PlumX Metrics


1979SA36      Nucl.Phys. A332, 210 (1979)

S.K.Samaddar, M.I.Sobel, J.N.De, S.I.A.Garpman, D.Sperber, M.Zielinska-Pfabe, S.Moller

A Classical Dynamical Model with Shape Deformation for Strongly Damped Collisions

NUCLEAR REACTIONS 209Bi(136Xe, X), E=1130 MeV; 209Bi(84Kr, X), E=600 MeV; calculated scattering angle, energy loss, mass transfer. Classical dynamical model, damped HI collisions.

doi: 10.1016/0375-9474(79)90106-4
Citations: PlumX Metrics


1978BI05      Phys.Rev.Lett. 40, 1123 (1978)

J.R.Birkelund, J.R.Huizenga, J.N.De, D.Sperber

Heavy-Ion Fusion Based on the Proximity Potential and One-Body Friction

NUCLEAR REACTIONS 27Al(16O, X), 58,60,62,64Ni, 112,116,120,124Sn(35Cl, X), 109Ag(40Ar, X); calculated fusion σ.

doi: 10.1103/PhysRevLett.40.1123
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1978DE06      Phys.Lett. 72B, 293 (1978)

J.N.De, D.Sperber

The Role of Deformation and Transfer in the Analysis of Strongly Damped Collisions

NUCLEAR REACTIONS 209Bi(136Xe, X), E=712, 1130 MeV; calculated σ(Z), σ(θ).

doi: 10.1016/0370-2693(78)90122-3
Citations: PlumX Metrics


1978DE24      Phys.Lett. 78B, 13 (1978)

J.N.De, S.I.A.Garpman, A.Sherman, D.Sperber, K.Tam

A Stochastic Model for Strongly Damped Collisions with Liquid Drop Driving Forces

NUCLEAR REACTIONS 209Bi(136Xe, X), E=1130 MeV; calculated σ(E(Z), θ).

doi: 10.1016/0370-2693(78)90335-0
Citations: PlumX Metrics


1978DE40      S.Afr.J.Phys. 1, 239 (1978)

J.N.De, A.Sherman, D.Sperber, J.R.Birkelund, J.R.Huizenga

Fusion-Excitation Functions as a Test of the Radial Dependence of the Proximity Potential

NUCLEAR REACTIONS 27Al(35Cl, X), E(cm)=50-300 MeV; 232Th(40Ar, X), E(cm)=20-55 MeV; calculated σ(fusion, E); deduced radial dependence of ion-ion potential. Proximity potential model.


1976LI12      Phys.Rev.Lett. 37, 327 (1976)

L.Lin, A.Sherman, D.Sperber

Time-Dependent Quantum Treatment of Heavy-Ion Scattering

NUCLEAR REACTIONS 209Bi(84Kr, X), E=600, 700 MeV; calculated σ.

doi: 10.1103/PhysRevLett.37.327
Citations: PlumX Metrics


1975BO08      Phys.Rev. C11, 1265 (1975)

J.P.Bondorf, J.R.Huizenga, M.I.Sobel, D.Sperber

Classical Model for Strongly Damped Collisions in Heavy-Ion Reactions

NUCLEAR REACTIONS 209Bi(84Kr, X), E=600 MeV; analyzed reaction.

doi: 10.1103/PhysRevC.11.1265
Citations: PlumX Metrics


1975SE05      Phys.Rev. C11, 1227 (1975)

E.Seglie, D.Sperber, A.Sherman

Determination of the Critical Angular Momentum for Heavy-Ion Fusion Using the Proximity Potential

NUCLEAR REACTIONS 27Al, 63Cu, 107Ag, 209Bi(Ne, γ), 77Se, 121Sb, 232Th, 165Ho(Ar, γ), 209Bi(Kr, γ), E=4-10 MeV/nucleon; calculated fusion σ.

doi: 10.1103/PhysRevC.11.1227
Citations: PlumX Metrics


1975SE15      Phys.Rev. C12, 1236 (1975)

E.Seglie, D.Sperber

Energy and Angular Momentum Dependence of Complete Fusion Cross Sections

NUCLEAR REACTIONS 27Al, 59Co, 63Cu, 107Ag, 154Sm, 197Au(16O, F), 27Al, 48Ti, 58Ni, 63Cu, 107Ag, 158Gd, 197Au(12C, F), 27Al, 63Cu, 107Ag, 209Bi(20Ne, F), 77Se, 121Sb, 165Ho, 238U(40Ar, F), 152Sm(11B, F), 103Rh, 107Ag(14N, F); calculated σ.

doi: 10.1103/PhysRevC.12.1236
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1975SH23      Phys.Lett. 59B, 205 (1975)

A.Sherman, D.Sperber, E.Seglie

Role of Barrier Penetration in Complete Fusion of Heavy Ions

NUCLEAR REACTIONS 27Al, 63Cu, 107Ag, 209Bi(20Ne, F), 77Se(40Ar, F), E ≈ 200 MeV; 232Th, 165Ho(40Ar, F), E < 390 MeV; 209Bi(84Kr, F), E=500, 600 MeV; calculated critical angular momentum.

doi: 10.1016/0370-2693(75)90026-X
Citations: PlumX Metrics


1973SP04      Nuovo Cim. 13A, 373 (1973)

D.Sperber

Statistical Theory of Isomer Ratios for Shape (Fission) Isomers in (n, γ) Reactions

NUCLEAR REACTIONS 233,235U, 239Pu, 241Am(n, γ); calculated isomer ratios.

doi: 10.1007/BF02827341
Citations: PlumX Metrics


1973SP05      Phys.Lett. 47B, 209 (1973)

D.Sperber

Theory of Isomer Ratios of Shape Isomers in Heavy Ion Induced Reactions

NUCLEAR REACTIONS 238U(11B, α3n), E=0-80 MeV; calculated σ(E), isomer ratios.

doi: 10.1016/0370-2693(73)90710-7
Citations: PlumX Metrics


1972SP08      Phys.Lett. 41B, 574 (1972)

D.Sperber, A.Aframe

Statistical Theory for the Ratio of Isomer to Prompt and Neutron to Prompt Cross Sections

doi: 10.1016/0370-2693(72)90637-5
Citations: PlumX Metrics


1972SP10      Nuovo Cim. 11A, 380 (1972)

D.Sperber

Excitation Function and Isomer Ratios for Heavy-Ion-Induced Reactions

NUCLEAR REACTIONS Dy(40Ar, xn), E=162-280 MeV; calculated σ(E), isomeric ratio.

doi: 10.1007/BF02728883
Citations: PlumX Metrics


1971LI05      Phys.Rev. C3, 167 (1971)

G.Liggett, D.Sperber

Angular Distribution of Particles Evaporated in Nuclear Reactions

NUCLEAR REACTIONS 56Fe(α, p), E not given; 63Cu(12C, p), E not given; measured nothing; analyzed σ(θ).

doi: 10.1103/PhysRevC.3.167
Citations: PlumX Metrics


1971LI07      Phys.Rev. C3, 447 (1971)

G.Liggett, D.Sperber

Isomer Ratio for (b, xn, yp, γ) Reactions

NUCLEAR REACTIONS 74Se, 59Co, 87Sr, 90Zr, 92Mo, 107Ag, 113,115In, 121Sb(n, 2n), E=14 MeV; 55Mn(α, n), E=5-30 MeV; 88Sr(p, 2n), E=18-34 MeV; 85Rb(α, 2n), E=14-30 MeV; calculated isomeric σ ratio.

doi: 10.1103/PhysRevC.3.447
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1969SP06      Phys.Rev. 184, 1201 (1969)

D.Sperber

Statistical Theory of (n, γ) and (p, γ) Excitation Functions

NUCLEAR REACTIONS 127I(n, γ), E = 2-14 MeV; 209Bi(p, γ), E = 3-22 MeV; calculated σ(E).

doi: 10.1103/PhysRev.184.1201
Citations: PlumX Metrics


1967SP01      Nucl.Phys. A90, 665 (1967)

D.Sperber

Calculation of the Ratio of Isomeric Cross Sections

NUCLEAR STRUCTURE 197Hg; measured not abstracted; deduced nuclear properties.

doi: 10.1016/0375-9474(67)90072-3
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