NSR Query Results


Output year order : Descending
Format : Normal

NSR database version of April 11, 2024.

Search: Author = J.G.Keller

Found 24 matches.

Back to query form



1996BA17      Phys.Rev. C53, 1734 (1996)

B.B.Back, P.B.Fernandez, B.G.Glagola, D.Henderson, S.Kaufman, J.G.Keller, S.J.Sanders, F.Videbaek, T.F.Wang, B.D.Wilkins

Entrance-Channel Effects in Quasifission Reactions

NUCLEAR REACTIONS 182W(32S, X), (32S, 32S), E=166-260 MeV; 166Er(48Ti, X), (48Ti, 48Ti), E=220-298 MeV; 154Sm(60Ni, X), (60Ni, 60Ni), E=269-421 MeV; measured σ(θ), deep-inelastic, fission like σ(θ) vs fragment mass; deduced complete fusion contribution to fission like σ, entrance channel dependence.

doi: 10.1103/PhysRevC.53.1734
Citations: PlumX Metrics


1996NI02      Nucl.Phys. A598, 418 (1996)

T.Nilsson, F.Humbert, W.Schwab, H.Simon, M.H.Smedberg, M.Zinser, Th.Blaich, M.J.G.Borge, L.V.Chulkov, Th.W.Elze, H.Emling, H.Geissel, K.Grimm, D.Guillemaud-Mueller, P.G.Hansen, R.Holzmann, H.Irnich, B.Jonson, J.G.Keller, H.Klingler, A.A.Korsheninnikov, J.V.Kratz, R.Kulessa, D.Lambrecht, Y.Leifels, A.Magel, M.Mohar, A.C.Mueller, G.Munzenberg, F.Nickel, G.Nyman, A.Richter, K.Riisager, C.Scheidenberger, G.Schrieder, B.M.Sherrill, K.Stelzer, J.Stroth, O.Tengblad, W.Trautmann, E.Wajda, M.V.Zhukov, E.Zude

6He and Neutron Momentum Distributions from 8He in Nuclear Break-Up Reactions at 240 MeV/u

NUCLEAR REACTIONS C(8He, X), E=240 MeV/nucleon; measured 6He, n-momentum distributions, invariant mass spectra; deduced two-neutron removal σ, reaction mechanism. Secondary 8He beam from 9Be(18O, X) reactions.

doi: 10.1016/0375-9474(95)00468-8
Citations: PlumX Metrics


1995HU06      Phys.Lett. 347B, 198 (1995)

F.Humbert, T.Nilsson, W.Schwab, M.Zinser, Th.Blaich, M.J.G.Borge, L.V.Chulkov, Th.W.Elze, H.Emling, B.Franzke, H.Freiesleben, H.Geissel, K.Grimm, D.Guillemaud-Mueller, P.G.Hansen, R.Holzmann, H.Irnich, L.Johannsen, B.Jonson, J.G.Keller, O.Klepper, H.Klingler, J.V.Kratz, R.Kulessa, D.Lambrecht, Y.Leifels, A.Magel, M.Mohar, A.C.Mueller, G.Munzenberg, P.Moller, F.Nickel, G.Nyman, A.Richter, K.Riisager, C.Scheidenberger, G.Schrieder, B.M.Sherrill, H.Simon, K.Stelzer, J.Stroth, O.Tengblad, W.Trautmann, E.Wajda, E.Zude

Longitudinal and Transverse Momentum Distributions of 9Li Fragments from Break-Up of 11Li

NUCLEAR REACTIONS C, 27Al, Pb(11Li, X), E=280 MeV/nucleon; measured 9Li transverse longitudinal momentum distributions following 11Li breakup, two-neutron removal σ.

doi: 10.1016/0370-2693(95)00072-S
Citations: PlumX Metrics


1995NI04      Nucl.Phys. A583, 795c (1995)

T.Nilsson, F.Humbert, W.Schwab, M.Zinser, Th.Blaich, M.J.G.Borge, L.V.Chulkov, H.Eickhoff, Th.W.Elze, H.Emling, B.Franzke, H.Freiesleben, H.Geissel, K.Grimm, D.Guillemaud-Mueller, P.G.Hansen, R.Holzmann, H.Irnich, L.Johannsen, B.Jonson, J.G.Keller, O.Klepper, H.Klingler, J.V.Kratz, R.Kulessa, D.Lambrecht, Y.Leifels, A.Magel, M.Mohar, E.F.Moore, A.C.Mueller, G.Munzenberg, P.Moller, F.Nickel, G.Nyman, A.Richter, K.Riisager, C.Scheidenberger, G.Schrieder, B.M.Sherrill, H.Simon, K.Stelzer, J.Stroth, O.Tengblad, W.Trautmann, E.Wajda, E.Zude, and the S034 Collaboration

Dissociation of 8He into 6He + n + X at 240 MeV/u

NUCLEAR REACTIONS C, Pb(8He, X), E=240 MeV/nucleon; measured (6He+n) projectile breakup, product transverse momentum distribution.

doi: 10.1016/0375-9474(94)00760-K
Citations: PlumX Metrics


1995ZI03      Phys.Rev.Lett. 75, 1719 (1995)

M.Zinser, F.Humbert, T.Nilsson, W.Schwab, Th.Blaich, M.J.G.Borge, L.V.Chulkov, H.Eickhoff, Th.W.Elze, H.Emling, B.Franzke, H.Freiesleben, H.Geissel, K.Grimm, D.Guillemaud-Mueller, P.G.Hansen, R.Holzmann, H.Irnich, B.Jonson, J.G.Keller, O.Klepper, H.Klingler, J.V.Kratz, R.Kulessa, D.Lambrecht, Y.Leifels, A.Magel, M.Mohar, A.C.Mueller, G.Munzenberg, F.Nickel, G.Nyman, A.Richter, K.Riisager, C.Scheidenberger, G.Schrieder, B.M.Sherrill, H.Simon, K.Stelzer, J.Stroth, O.Tengblad, W.Trautmann, E.Wajda, E.Zude

Study of the Unstable Nucleus 10Li in Stripping Reactions of the Radioactive Projectiles 11Be and 11Li

NUCLEAR REACTIONS C(11Li, X), E=280 MeV/nucleon; (11Be, X), E=460 MeV/nucleon; measured neutron radial momentum distributions in coincidence with fragment following projectile breakup. 10Li deduced possible level. 11Li deduced neutron halo related features.

doi: 10.1103/PhysRevLett.75.1719
Citations: PlumX Metrics


1994LA28      Z.Phys. A350, 115 (1994)

D.Lambrecht, T.Blaich, T.W.Elze, H.Emling, H.Freiesleben, K.Grimm, W.Henning, R.Holzmann, J.G.Keller, H.Klingler, J.V.Kratz, R.Kulessa, S.Lange, Y.Leifels, E.Lubkiewicz, E.F.Moore, W.Prokopowicz, R.Schmidt, C.Schutter, H.Spies, K.Stelzer, J.Stroth, E.Wajda, W.Walus, M.Zinser, E.Zude, and the FOPI-Collaboration

Energy Dependence of Collective Flow of Neutrons and Protons in 197Au + 197Au Collisions

NUCLEAR REACTIONS 197Au(197Au, X), E=400-800 MeV/nucleon; measured mid-rapidity azimuthal distributions for neutrons, protons; deduced collective nucleon flow energy dependence.

doi: 10.1007/BF01290679
Citations: PlumX Metrics


1993LE12      Phys.Rev.Lett. 71, 963 (1993)

Y.Leifels, Th.Blaich, Th.W.Elze, H.Emling, H.Freiesleben, K.Grimm, W.Henning, R.Holzmann, J.G.Keller, H.Klingler, J.V.Kratz, R.Kulessa, D.Lambrecht, S.Lange, E.Lubkiewicz, E.F.Moore, W.Prokopowicz, R.Schmidt, C.Schutter, H.Spies, K.Stelzer, J.Stroth, E.Wajda, W.Walus, M.Zinser, E.Zude, and the FOPI Collaboration

Exclusive Studies of Neutron and Charged Particle Emission in Collisions of 197Au + 197Au at 400 MeV/Nucleon

NUCLEAR REACTIONS 197Au(197Au, X), E=400 MeV/nucleon; measured σ(φn); deduced neutron squeezeout evidence.

doi: 10.1103/PhysRevLett.71.963
Citations: PlumX Metrics


1993SC07      Phys.Rev.Lett. 70, 1767 (1993)

R.Schmidt, Th.Blaich, Th.W.Elze, H.Emling, H.Freiesleben, K.Grimm, W.Henning, R.Holzmann, J.G.Keller, H.Klingler, R.Kulessa, J.V.Kratz, D.Lambrecht, J.S.Lange, Y.Leifels, E.Lubkiewicz, E.F.Moore, E.Wajda, W.Prokopowicz, Ch.Schutter, H.Spies, K.Stelzer, J.Stroth, W.Walus, H.J.Wollersheim, M.Zinser, E.Zude

Electromagnetic Excitation of the Double Giant Dipole Resonance in 136Xe

NUCLEAR REACTIONS Pb(136Xe, 136Xe'), E=700 MeV/nucleon; measured projectile neutron decay, response to electromagnetic excitation; deduced isovector GDR excitation σ for projectile. 136Xe deduced double isovector GDR energy, width.

doi: 10.1103/PhysRevLett.70.1767
Citations: PlumX Metrics


1989MU09      Z.Phys. A333, 163 (1989)

G.Munzenberg, P.Armbruster, S.Hofmann, F.P.Hessberger, H.Folger, J.G.Keller, V.Ninov, K.Poppensieker, A.B.Quint, W.Reisdorf, K.-H.Schmidt, J.R.H.Schneider, H.-J.Schott, K.Summerer, I.Zychor, M.E.Leino, D.Ackermann, U.Gollerthan, E.Hanelt, W.Morawek, D.Vermeulen, Y.Fujita, T.Schwab

Element 107

NUCLEAR REACTIONS 209Bi(54Cr, xn), E=4.87-5.07 MeV/nucleon; measured α-spectra; deduced evidence for 261,262,262mBh, formation σ, reaction σ(E).

RADIOACTIVITY 261,262,262mBh(α) [from 209Bi(54Cr, xn), E=4.87-5.07 MeV/nucleon]; measured α-spectra, αα-correlations, T1/2; deduced no SF-decay evidence.


1987KE04      Phys.Rev. C36, 1364 (1987)

J.G.Keller, B.B.Back, B.G.Glagola, D.Henderson, S.B.Kaufman, S.J.Sanders, R.H.Siemssen, F.Videbaek, B.D.Wilkins, A.Worsham

Distribution of Reaction Strength in 32S + 182W Collisions

NUCLEAR REACTIONS 182W(32S, 32S), (32S, X), E=166, 177, 222, 260 MeV; measured σ(θ); deduced reaction, deep inelastic, fission σ(E), fission product mass, reaction strength distributions.

doi: 10.1103/PhysRevC.36.1364
Citations: PlumX Metrics


1987SA52      Phys.Rev.Lett. 59, 2856 (1987)

S.J.Sanders, D.G.Kovar, B.B.Back, C.Beck, B.K.Dichter, D.Henderson, R.V.F.Janssens, J.G.Keller, S.Kaufman, T.-F.Wang, B.Wilkins, F.Videbaek

Asymmetric Fission of 56Ni

NUCLEAR REACTIONS, ICPND 24Mg(32S, X), E=141.8 MeV; measured mass, velocity spectra, binary reaction σ(A); deduced fission reaction yield characteristics. 56Ni deduced fission mechanism.

doi: 10.1103/PhysRevLett.59.2856
Citations: PlumX Metrics


1986KE03      Nucl.Phys. A452, 173 (1986)

J.G.Keller, K.-H.Schmidt, F.P.Hessberger, G.Munzenberg, W.Reisdorf, H.-G.Clerc, C.-C.Sahm

Cold Fusion in Symmetric 90Zr-Induced Reactions

RADIOACTIVITY 172,173,174,175,176,177Ir, 175Pt, 178,179,180Au, 181Hg, 182Tl, 181,182,183Pb(α); measured E(α); deduced α-branching ratios.

NUCLEAR REACTIONS 89Y, 90,92,96Zr, 94Mo(90Zr, xn), E=321-390 MeV; measured evaporation residue σ above, around, below the fusion barriers; deduced fusion probabilities, barrier distributions. 179Au, 180,182Hg, 184Pb deduced γ-transitions. Enriched targets, velocity filter, parallel-plate avalanche counter, surface-barrier detectors.

doi: 10.1016/0375-9474(86)90514-2
Citations: PlumX Metrics


1986SC07      Phys.Lett. 168B, 39 (1986)

K.-H.Schmidt, R.S.Simon, J.-G.Keller, F.P.Hessberger, G.Munzenberg, B.Quint, H.-G.Clerc, W.Schwab, U.Gollerthan, C.-C.Sahm

Gamma-Spectroscopic Investigations in the Radiative Fusion Reaction 90Zr + 90Zr

NUCLEAR REACTIONS 90Zr(90Zr, X), E=358 MeV; measured radiative fusion Eγ, Iγ; deduced reaction mechanism. 180Hg deduced statistical deexcitation, E1 transition strength.

doi: 10.1016/0370-2693(86)91456-5
Citations: PlumX Metrics


1985HO29      Nucl.Phys. A447, 335c (1985)

S.Hofmann, P.Armbruster, G.Munzenberg, W.Reisdorf, K.-H.Schmidt, H.G.Burkhard, F.P.Hessberger, H.-J.Schott, Y.K.Agarwal, G.Berthes, U.Gollerthan, H.Folger, R.Hingmann, J.G.Keller, M.E.Leino, P.Lemmertz, M.Montoya, K.Poppensieker, B.Quint, I.Zychor

The Influence of the Surprising Decay Properties of Element 108 on Search Experiments for New Elements

RADIOACTIVITY 260Sg(α) [from 208Pb(54Cr, 2n), E=4.92 MeV/nucleon]; measured T1/2; deduced SF(T1/2) limit, branching ratio. 256Rf(SF) [from 260Sg(α-decay)]; measured T1/2. 260Sg, 256Rf deduced mass excess.

doi: 10.1016/0375-9474(86)90615-9
Citations: PlumX Metrics


1985SA21      Nucl.Phys. A441, 316 (1985)

C.-C.Sahm, H.-G.Clerc, K.-H.Schmidt, W.Residorf, P.Armbruster, F.P.Hessberger, J.G.Keller, G.Munzenberg, D.Vermeulen

Fusion Probability of Symmetric Heavy, Nuclear Systems Determined from Evaporation-Residue Cross Sections

NUCLEAR REACTIONS 172,173,176Yb(48Ca, X), E=196-225 MeV; 121,123Sb(86Kr, X), E=337-389 MeV; 90,92,94,96Zr(124Sn, X), E=472-569 MeV; measured evaporation residue σ; deduced fusion probabilities. Enriched targets, velocity filter, secondary electron detector, surface-barrier detectors, delayed coincidences.

doi: 10.1016/0375-9474(85)90036-3
Citations: PlumX Metrics


1984CL03      Nucl.Phys. A419, 571 (1984)

H.-G.Clerc, J.G.Keller, C.-C.Sahm, K.-H.Schmidt, H.Schulte, D.Vermeulen

Fusion-Fission and Neutron-Evaporation-Residue Cross Sections in 40Ar- and 50Ti- Induced Fusion Reactions

NUCLEAR REACTIONS 165Ho, 169Tm, 174Yb, 175Lu, 176,177,178,179,180Hf, 181Ta, 208Pb(40Ar, X), E=170-208 MeV; 208Pb, 209Bi(50Ti, X), E=235-260 MeV; measured fusion σ(E), neutron evaporation residue σ(E); deduced fusion barriers, fusion radii. Enriched targets.

doi: 10.1016/0375-9474(84)90634-1
Citations: PlumX Metrics


1984KE03      Phys.Rev. C29, 1569 (1984)

J.G.Keller, K.-H.Schmidt, H.Stelzer, W.Reisdorf, Y.K.Agarwal, F.P.Hessberger, G.Munzenberg, H.-G.Clerc, C.-C.Sahm

Fusion of the System 90Zr + 90Zr

NUCLEAR REACTIONS, ICPND 90Zr(90Zr, X), E(cm) ≈ 172-195 MeV; measured compound residue σ(E); deduced fusion barrier, fluctuations.

doi: 10.1103/PhysRevC.29.1569
Citations: PlumX Metrics


1984SA24      Z.Phys. A319, 113 (1984)

C.-C.Sahm, H.-G.Clerc, K.-H.Schmidt, W.Reisdorf, P.Armbruster, F.P.Hessberger, J.G.Keller, G.Munzenberg, D.Vermeulen

Hindrance of Fusion in Central Collisions of Heavy, Symmetric Nuclear Systems

NUCLEAR REACTIONS 92,94,96Zr(124Sn, xn), (86Kr, xn), E not given; measured evaporation σ(E), fusion probability vs residual excitation; deduced fusion hindrance in symmetric system central collisions.

doi: 10.1007/BF01415623
Citations: PlumX Metrics


1984SC07      Z.Phys. A315, 159 (1984)

K.-H.Schmidt, J.G.Keller, D.Vermeulen

Temperature-Induced Deformation - A Possible Mechanism for Washing Out Spherical Shell Effects in the Nuclear Level Density

NUCLEAR STRUCTURE 216Th, 252Fm; calculated level density; deduced shell effect washout. Shell, rotational motion interplay.

doi: 10.1007/BF01419374
Citations: PlumX Metrics


1984VE09      Z.Phys. A318, 157 (1984)

D.Vermeulen, H.-G.Clerc, C.-C.Sahm, K.-H.Schmidt, J.G.Keller, G.Munzenberg, W.Reisdorf

Cross Sections for Evaporation Residue Production near the N = 126 Shell Closure

NUCLEAR REACTIONS 165Ho, 169Tm, 175Lu, 171,174Yb, 181Ta, 177,178,179,180,176Hf(40Ar, X), E=192 MeV; measured evaporation residue production σ, fragment α-decay, Eα, Iα; deduced low shell stabilizing influence, superheavy production optimum conditions.

doi: 10.1007/BF01413464
Citations: PlumX Metrics


1983HI08      Nucl.Phys. A404, 51 (1983)

R.Hingmann, H.-G.Clerc, C.-C.Sahm, D.Vermeulen, K.-H.Schmidt, J.G.Keller

Evidence for an Isomeric State in 216Th

NUCLEAR REACTIONS 180Hf(40Ar, 4n), (40Ar, 5n), E=165-200 MeV; measured residuals production σ(E). 180Hf(40Ar, X), E=180 MeV; measured Eα, Iα from evaporation residue decay; deduced evidence for 216mTh.

RADIOACTIVITY 216mTh [from 178,179,180Hf(40Ar, xn), E=165-200 MeV]; measured Eα, T1/2; deduced Iα, Iγ. Comparison with 217mPa decay.

doi: 10.1016/0375-9474(83)90413-X
Citations: PlumX Metrics


1983HI12      Z.Phys. A313, 141 (1983)

R.Hingmann, H.-G.Clerc, C.-C.Sahm, D.Vermeulen, K.-H.Schmidt, J.G.Keller

Identification of 222U and 221Pa by α-Correlation Chains

RADIOACTIVITY 222U(α) [from W(40Ar, 4n), E=4.5 MeV/nucleon]; 221Pa(α) [from 186W(40Ar, 4np), E=4.72 MeV/nucleon]; measured αα-correlation; deduced T1/2.

NUCLEAR REACTIONS W(40Ar, 4n), E=4.5 MeV/nucleon; 186W(40Ar, 4np), E=4.72 MeV/nucleon; measured αα-correlation; deduced evidence for 222U, 221Pa.

doi: 10.1007/BF02115854
Citations: PlumX Metrics


1983KE01      Z.Phys. A311, 243 (1983)

J.G.Keller, H.-G.Clerc, K.-H.Schmidt, Y.K.Agarwal, F.P.Hessberger, R.Hingmann, G.Munzenberg, W.Reisdorf, C.C.Sahm

Observation of Radiative Capture in the Reaction 90Zr + 90Zr

NUCLEAR REACTIONS 90Zr(90Zr, X), E=351, 360 MeV; measured Eα, Iα following evaporation residue decay; deduced heavy system radiative capture.

doi: 10.1007/BF01415109
Citations: PlumX Metrics


1982HI14      Z.Phys. A309, 27 (1982)

R.Hingmann, H.-G.Clerc, C.-C.Sahm, D.Vermeulen, K.-H.Schmidt, J.G.Keller

Alpha Decay Properties of 199Rn and 199mRn

NUCLEAR REACTIONS 86Kr(116Sn, X), (116Sn, 2n), (116Sn, 3n), E=345-385 MeV; measured residual production σ vs E, (evaporation residue)(α)(t), αα(t). 199m,199Rn levels deduced α-decay T1/2, decay characteristics, possible J, π. Correlation analysis, shell model.

doi: 10.1007/BF01420147
Citations: PlumX Metrics


Back to query form