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Search: Author = W.F.Schneider

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1988ST20      Nucl.Phys. A489, 146 (1988)

H.Stege, H.-J.Keim, H.A.Bosser, B.Kohlmeyer, F.Puhlhofer, W.F.W.Schneider

Evidence for Cluster Emission in Fusion Reactions between 48Ti and 45Sc at 16 MeV/u

NUCLEAR REACTIONS 45Sc(48Ti, X), E=767 MeV; measured evaporation residue like products σ(θ, mass) vs velocity for A(X) ≥ 53; deduced (cm) velocity distributions, relation to the emitted particles.

doi: 10.1016/0375-9474(88)90058-9
Citations: PlumX Metrics

1987KE02      Z.Phys. A327, 101 (1987)

H.-J.Keim, B.Kohlmeyer, H.Stege, H.A.Bosser, F.Puhlhofer, W.F.W.Schneider

Particle Emission in Central Nuclear Collisions between 48Ti and 45Sc at 16 MeV/u

NUCLEAR REACTIONS 45Sc(48Ti, pX), (48Ti, αX), E=16 MeV/nucleon; measured p-spectra, α-spectra, velocity distributions, fragment mass, p(fragment)-, α(fragment)-coin. ΔE-E telescopes.

1987SO09      Nucl.Phys. A467, 349 (1987)

H.Sohlbach, H.Freiesleben, W.F.W.Schneider, D.Schull, P.Braun-Munzinger, B.Kohlmeyer, M.Marinescu, F.Puhlhofer

Excitation Energy Sharing in 86Kr-Induced Quasielastic Reactions on 197Au and 208Pb between 10 and 18.2 MeV/u

NUCLEAR REACTIONS 197Au(86Kr, X), E=13 MeV/nucleon; 208Pb(86Kr, X), E=10, 13, 18.2 MeV/nucleon; measured total kinetic energy loss spectra of projectile-like fragments; deduced fragment mass, charge, average value, fluctuations of excitation energy sharing for quasielastic reactions. Monte Carlo simulation of sequential neutron emission.

doi: 10.1016/0375-9474(87)90534-3
Citations: PlumX Metrics

1987SO14      Z.Phys. A328, 205 (1987)

H.Sohlbach, H.Freiesleben, W.F.W.Schneider, D.Schull, B.Kohlmeyer, M.Marinescu, F.Puhlhofer

Inelastic Excitation and Nucleon Transfer in Quasielastic Reactions between 86Kr and 208Pb at 18.2 MeV/u Beam Energy

NUCLEAR REACTIONS 208Pb(86Kr, 86Kr), (86Kr, 86Kr'), (86Kr, X), (86Kr, xnyp), E=18.2 MeV/nucleon; measured σ(θ), transfer reaction σ(θ), total kinetic energy spectra for fragment mass=81-88, Z=34-37; deduced transfer probabilities for production of 84,85,87,88Kr, 85Br, 87Rb.

1986BA34      Nucl.Phys. A456, 489 (1986)

D.Bangert, F.Busch, B.Kohlmeyer, F.Puhlhofer, H.Freiesleben, B.Heusch, K.D.Hildenbrand, W.F.W.Schneider, D.Schull

Symmetric Fragmentation in the System 132Xe + 56Fe at 5.0, 5.7 and 8.5 MeV/u Beam Energy

NUCLEAR REACTIONS 56Fe(132Xe, X), E=5, 5.7, 8.5 MeV/nucleon; measured σ(fragment θ); deduced fission, capture σ(E), compound nucleus formation mechanisms.

doi: 10.1016/0375-9474(86)90407-0
Citations: PlumX Metrics

1986HE28      J.Less-Common Met. 122, 445 (1986)

F.P.Hessberger, G.Munzenberg, S.Hofmann, P.Armbruster, Y.K.Agarwal, W.Reisdorf, K.Poppensieker, K.-H.Schmidt, J.R.H.Schneider, W.F.W.Schneider, H.J.Schott, C.-C.Sahm, D.Vermeulen, B.Thuma

Experiments on the Synthesis of Neutron-Deficient Isotopes with Atomic Numbers in the Region from Z = 102 to Z = 105

RADIOACTIVITY 258,257Db, 256,255Rf, 254,253Lr(α) [from 206,208Pb(48Ca, xn), E ≈ 15-30 MeV/nucleon; 207,208Pb, 209Bi(50Ti, xn), E=20-35 MeV/nucleon]; measured Eα, T1/2. 256,255Rf(SF); measured total kinetic energy release.

NUCLEAR REACTIONS 206,208Pb(48Ca, xn), E ≈ 15-30 MeV/nucleon; 207,208Pb, 209Bi(50Ti, xn)258Db/257Db/255Rf/256Rf/254Lr/253Lr, E ≈ 20-35 MeV/nucleon; measured evaporation residue, Z=104, 105, Lr isotope production σ(E).

doi: 10.1016/0022-5088(86)90440-6
Citations: PlumX Metrics

1985AR02      Phys.Rev.Lett. 54, 406 (1985)

P.Armbruster, Y.K.Agarwal, W.Bruchle, M.Brugger, J.P.Dufour, H.Gaggeler, F.P.Hessberger, S.Hofmann, P.Lemmertz, G.Munzenberg, K.Poppensieker, W.Reisdorf, M.Schadel, K.-H.Schmidt, J.H.R.Schneider, W.F.W.Schneider, K.Summerer, D.Vermeulen, G.Wirth, A.Ghiorso, K.E.Gregorich, D.Lee, M.Leino, K.J.Moody, G.T.Seaborg, R.B.Welch, P.Wilmarth, S.Yashita, C.Frink, N.Greulich, G.Herrmann, U.Hickmann, N.Hildebrand, J.V.Kratz, N.Trautmann, M.M.Fowler, D.C.Hoffman, W.R.Daniels, H.R.von Gunten, H.Dornhofer

Attempts to Produce Superheavy Elements by Fusion of 48Ca with 248Cm in the Bombarding Energy Range of 4.5-5.2 MeV/u

NUCLEAR REACTIONS 248Cm(48Ca, X), E=4.5-5.2 MeV/nucleon; measured superheavy production σ upper limits vs T1/2. Different separation techniques.

doi: 10.1103/PhysRevLett.54.406
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1985HE17      Z.Phys. A322, 309 (1985)

B.Heusch, H.Freiesleben, W.F.W.Schneider, B.Kohlmeyer, H.Stege, F.Puhlhofer

A Fast-Fission Component with Small Mass Drift in the Reaction 84Kr + 27Al at E(lab) = 5.9 MeV/u

NUCLEAR REACTIONS 27Al(84Kr, X), E=5.94 MeV/nucleon; measured σ(fragment θ) for fragment Z=10-41; deduced total, reaction, deep inelastic, quasielastic, evaporation, fast fission σ, maximum (L).

doi: 10.1007/BF01411896
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1985HE22      Z.Phys. A322, 557 (1985)

F.P.Hessberger, G.Munzenberg, S.Hofmann, Y.K.Agarwal, K.Poppensieker, W.Reisdorf, K.-H.Schmidt, J.R.H.Schneider, W.F.W.Schneider, H.J.Schott, P.Armbruster, B.Thuma, C.-C.Sahm, D.Vermeulen

The New Isotopes 258105, 257105, 254Lr and 253Lr

RADIOACTIVITY 258Db, 257Db, 253,254Lr(α) [from 209Bi(50Ti, X), E=4.65-4.95 MeV/nucleon]; measured Eα, Iα, T1/2. 258Rf(SF) [from 258Db(EC-decay)]; measured T1/2, fission fragment total kinetic energy.

NUCLEAR REACTIONS 209Bi(50Ti, X), E=4.65-4.95 MeV/nucleon; measured Eα, Iα, evaporation residue σ(E) for one-, two-neutron emission; deduced evidence for 258Db, 257Db, 253,254Lr.

1985RE03      Nucl.Phys. A438, 212 (1985)

W.Reisdorf, F.P.Hessberger, K.D.Hildenbrand, S.Hofmann, G.Munzenberg, K.-H.Schmidt, J.H.R.Schneider, W.F.W.Schneider, K.Summerer, G.Wirth, J.V.Kratz, K.Schlitt

Fusion Near the Threshold: A comparative study of the system 40Ar + 112,116,112Sn and 40Ar + 144,148,154Sm

NUCLEAR REACTIONS 112,116,122Sn, 144,148,154Sm(40Ar, X), (40Ar, F), E=125-179 MeV; measured evaporation residues, fission; deduced fusion σ around, below Coulomb barrier. 152,156,162Er, 184,188,194Hg, 144,148,154Sm deduced barrier height, barrier fluctuation, role of coupling to inelastic, transfer channels, partial wave distribution above barrier. Enriched targets, velocity filter, K X-ray and γ-ray activation method, ionization chamber.

doi: 10.1016/0375-9474(85)90125-3
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1985RE11      Nucl.Phys. A444, 154 (1985)

W.Reisdorf, F.P.Hessberger, K.D.Hildenbrand, S.Hofmann, G.Munzenberg, K.-H.Schmidt, W.F.W.Schneider, K.Summerer, G.Wirth, J.V.Kratz, K.Schlitt, C.-C.Sahm

Fusability and Fissionability in 86Kr-Induced Reactions Near and Below the Fusion Barrier

NUCLEAR REACTIONS 70,76Ge, 92,100Mo, 99,102,104Ru(86Kr, X), E=257-369 MeV; measured evaporation residues; deduced evaporation residue σ at, below Coulomb barrier, barrier height, barrier fluctuation, role of coupling to inelastic channels. 156,162Er, 178,186Pt, 185,188,190Hg deduced effective fission barriers. Enriched targets, velocity filter, K X-ray activation method.

doi: 10.1016/0375-9474(85)90296-9
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1985SO04      Phys.Lett. 153B, 386 (1985)

H.Sohlbach, H.Freiesleben, P.Braun-Munzinger, W.F.W.Schneider, D.Schull, B.Kohlmeyer, M.Marinescu, F.Puhlhofer

Channel-Dependent Sharing of the Excitation Energy in Quasielastic Reactions between 208Pb + 86Kr

NUCLEAR REACTIONS 208Pb(86Kr, 84Kr), (86Kr, 85Kr), (86Kr, 86Kr), (86Kr, 87Kr), E=18.2 MeV/nucleon; measured ejectile spectra; deduced primary fragment excitation energy sharing. Monte Carlo simulation.

doi: 10.1016/0370-2693(85)90478-2
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1984MU07      Z.Phys. A315, 145 (1984)

G.Munzenberg, W.Reisdorf, S.Hofmann, Y.K.Agarwal, F.P.Hessberger, K.Poppensieker, J.R.H.Schneider, W.F.W.Schneider, K.-H.Schmidt, H.-J.Schott, P.Armbruster, C.-C.Sahm, D.Vermeulen

Evidence for Element 109 from One Correlated Decay Sequence following the Fusion of 58Fe with 209Bi

RADIOACTIVITY 266Mt(SF) [from 209Bi(58Fe, X), E=5.15 MeV/nucleon]; measured Eα, Iα, αα-coin, SF-decay.

NUCLEAR REACTIONS 209Bi(58Fe, X), E=4.95, 5.05, 5.15 MeV/nucleon; measured σ(fragment) vs mass, Eα, Iα, SF-decay; deduced evidence for compound nucleus 266Mt.

1982MU15      Z.Phys. A309, 89 (1982)

G.Munzenberg, P.Armbruster, F.P.Hessberger, S.Hofmann, K.Poppensieker, W.Reisdorf, J.H.R.Schneider, W.F.W.Schneider, K.-H.Schmidt, C.-C.Sahm, D.Vermeulen

Observation of One Correlated α-Decay in the Reaction 58Fe on 209Bi → 267109

RADIOACTIVITY 266Mt [from 209Bi(58Fe, n), E=4.95-5.15 MeV/nucleon]; measured Eα, time correlated α-spectra; deduced α-decay chain correlation followed by 258Rf fission. Evaporation residue implantation technique.

NUCLEAR REACTIONS 209Bi(58Fe, n), E=4.95-5.15 MeV/nucleon; measured Eα, time correlated α-spectra; deduced evidence for 266Mt. Evaporation residue implantation technique.

1982RE18      Phys.Rev.Lett. 49, 1811 (1982)

W.Reisdorf, F.P.Hessberger, K.D.Hildenbrand, S.Hofmann, G.Munzenberg, K.-H.Schmidt, J.H.R.Schneider, W.F.W.Schneider, K.Summerer, G.Wirth, J.V.Kratz, K.Schlitt

Influence of Collective Surface Motion on the Threshold Behavior of Nuclear Fusion

NUCLEAR REACTIONS, ICPND 112,116,122Sn, 144,148,154Sm(40Ar, X), E=3.2-4.5 MeV/nucleon; measured fusion σ vs E; deduced barrier fluctuation effects.

doi: 10.1103/PhysRevLett.49.1811
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1981KO21      Z.Phys. A301, 349 (1981)

B.Kohlmeyer, F.Puhlhofer, G.Sletten, H.Freiesleben, W.Schafer, W.F.W.Schneider, R.Bock

Search for Delayed α-Decay of High Spin Isomers in Heavy-Ion Induced Fusion Reactions

NUCLEAR REACTIONS 12C, 16O, 24Mg, 27Al, 28Si, 51V, 55Mn, 56Fe, 58Ni, 63Cu(132Xe, α), E=5.4 MeV/nucleon; 56Fe, Zr, Mo, 100Mo, 102,104Ru, 103Rh, 104,106,108,110Pd, 107,109Ag, 112Cd, 116Sn(50Ti, α), E=4.8 MeV/nucleon; measured compound nuclear recoil, possible delayed α-emission; deduced no α-decaying high-spin isomers.

doi: 10.1007/BF01421700
Citations: PlumX Metrics

1979BU04      Z.Phys. A290, 167 (1979)

F.Busch, M.J.Canty, W.Pfeffer, B.Kohlmeyer, W.Schafer, W.F.W.Schneider, H.Freiesleben, F.Puhlhofer

A Study of the Influence of Shell Effects in Nuclear Level Densities on the Decay of the Compound Nucleus 58Ni

NUCLEAR REACTIONS 12C(46Ti, xnyα), E=5.8 MeV/nucleon; measured fragment mass, charge distribution, σ(fusion), σ(θ) of evaporation residues for X=2-4, y=1, 2. Monte Carlo calculations.

doi: 10.1007/BF01408111
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1979FR10      Z.Phys. A292, 171 (1979)

H.Freiesleben, K.D.Hildenbrand, F.Puhlhofer, W.F.W.Schneider, R.Bock, D.v.Harrach, H.J.Specht

The Reaction 238U + 238U at 7.42 MeV/u

NUCLEAR REACTIONS 238U(238U, 238U), 238U(238U, X), E=1766 MeV; measured σ(θ), σ(Eα), α(X-ray)-coin; deduced production σ for 208,210Po, 211At, 222Rn, 223,224,225Ra, 225,226Ac, 227,228Th, 230U, 230Pa, superheavy nuclei.

doi: 10.1007/BF01441624
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1978HE20      Z.Phys. A288, 391 (1978)

B.Heusch, C.Volant, H.Freiesleben, R.P.Chestnut, K.D.Hildenbrand, F.Puhlhofer, W.F.W.Schneider, B.Kohlmeyer, W.Pfeffer

The Reaction Mechanism in the System 132Xe + 56Fe at 5.73 MeV/u: Evidence for a New Type of Strongly Damped Collisions

NUCLEAR REACTIONS 56Fe(132Xe, X), E=5.73 MeV/nucleon; measured σ(E, θ) for target-, projectile-like fragments; deduced evidence for a new type of damped collision.

doi: 10.1007/BF01417723
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1978HI09      Nukleonika 23, 347 (1978)

K.D.Hildenbrand, H.Freiesleben, F.Puhlhofer, W.F.W.Schneider, R.Bock, D.v.Harrach, H.J.Specht

Reactions Induced by 238U on 238U at 1766 MeV

NUCLEAR REACTIONS 238U(238U, X), E=1766 MeV; measured σ(E(A), Z, θ).

1977HI08      Phys.Rev.Lett. 39, 1065 (1977)

K.D.Hildenbrand, H.Freiesleben, W.F.W.Schneider, R.Bock, D.v.Harrach, H.J.Specht

Reaction between 238U and 238U at 7.42 MeV/Nucleon

NUCLEAR REACTIONS 238U(238U, X), E=7.42 MeV/nucleon; measured σ(A, Z); deduced upper limit σ for production of superheavy elements.

doi: 10.1103/PhysRevLett.39.1065
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1977PU05      Phys.Rev. C16, 1010 (1977)

F.Puhlhofer, W.F.W.Schneider, F.Busch, J.Barrette, P.Braun-Munzinger, C.K.Gelbke, H.E.Wegner

Isotope and Element Distributions of the Evaporation Residues from Fusion of 160 MeV 32S with 24,25,26Mg and 27Al

NUCLEAR REACTIONS 24,25,26Mg, 27Al(32S, X), E=160 MeV; measured σ(A, Z, θ) for fusion products. Systematics of nuclide distributions as function of compound-nucleus mass are discussed. Comparison with evaporation calculations; shell effects in level densities.

doi: 10.1103/PhysRevC.16.1010
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1976ST18      Phys.Rev. C14, 1824 (1976)

R.Stock, U.Jahnke, D.L.Hendrie, J.Mahoney, C.F.Maguire, W.F.W.Schneider, D.K.Scott, G.Wolschin

Contribution of Alpha Cluster Exchange to Elastic and Inelastic 16O + 20Ne Scattering

NUCLEAR REACTIONS 16O(20Ne, 16O), (20Ne, 20Ne), E=50 MeV; measured σ(θ). Optical model, DWBA, CCBA analyses.

doi: 10.1103/PhysRevC.14.1824
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1975PU02      Nucl.Phys. A244, 329 (1975)

F.Puhlhofer, W.Pfeffer, B.Kohlmeyer, W.F.W.Schneider

Mass Distributions of Fusion Products in Reactions between 19F and 12C

NUCLEAR REACTIONS 12C(19F, X), E=50, 63.2, 76 MeV; measured σ(E, E(fragment mass), θ), A=11-30, total fusion, direct cross section.

doi: 10.1016/0375-9474(75)90063-9
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1975SC35      Nucl.Phys. A251, 331 (1975)

W.F.W.Schneider, B.Kohlmeyer, F.Puhlhofer, R.Bock

Interfering Transfer Processes in Heavy-Ion Reactions

NUCLEAR REACTIONS 14C(16O, 17O), (16O, 18O), E=20, 25, 30 MeV; measured σ(θ). 11B(16O, 15N), E=27-35 MeV; analyzed σ(θ). DWBA analysis of interference structure in σ(θ). Enriched targets.

doi: 10.1016/0375-9474(75)90075-5
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1975SC42      Z.Phys. A275, 249 (1975)

W.F.W.Schneider, B.Kohlmeyer, F.Puhlhofer

Single-Nucleon Transfer Reactions Induced by 16O on 14C

NUCLEAR REACTIONS 14C(16O, 15N), (16O, 17O), E=20, 25, 30 MeV; measured σ(θ). DWBA analysis.

doi: 10.1007/BF01409292
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1973SC24      Phys.Lett. 46B, 195 (1973)

W.F.W.Schneider, B.Kohlmeyer, F.Puhlhofer, R.Bock

Interference of Two-Neutron and α-Transfer in the Reaction 14C(16O, 18O)12C

NUCLEAR REACTIONS 14C(16O, 18O), E=20, 25, 30 MeV; measured σ(θ).

doi: 10.1016/0370-2693(73)90682-5
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