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NSR database version of April 11, 2024.

Search: Author = J.Speer

Found 23 matches.

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2007FO01      Phys.Rev. C 75, 024906 (2007)

A.Forster, F.Uhlig, I.Bottcher, D.Brill, M.Debowski, F.Dohrmann, E.Grosse, P.Koczon, B.Kohlmeyer, S.Lang, F.Laue, M.Mang, M.Menzel, C.Muntz, L.Naumann, H.Oeschler, M.Ploskon, W.Scheinast, A.Schmah, T.J.Schuck, E.Schwab, P.Senger, Y.Shin, J.Speer, H.Strobele, C.Sturm, G.Surowka, A.Wagner, W.Walus, and the KaoS Collaboration

Production of K+ and of K- mesons in heavy-ion collisions from 0.6A to 2.0A GeV incident energy

NUCLEAR REACTIONS C(C, X), Ni(Ni, X), Au(Au, X), E=0.6-2.0 GeV/nucleon; measured charged kaon yields, σ, σ(E, θ); deduced reaction mechanism features.

doi: 10.1103/PhysRevC.75.024906
Citations: PlumX Metrics


2002ST27      J.Phys.(London) G28, 1895 (2002)

C.Sturm, I.Bottcher, M.Debowski, A.Forster, E.Grosse, P.Koczon, B.Kohlmeyer, F.Laue, M.Mang, L.Naumann, H.Oeschler, F.Puhlhofer, E.Schwab, P.Senger, Y.Shin, J.Speer, H.Strobele, G.Surowka, F.Uhlig, A.Wagner, W.Walus, and the KaoS Collaboration

Kaon and Antikaon Production in Dense Nuclear Matter

NUCLEAR REACTIONS Ni(Ni, X), E=1.93 GeV/nucleon; C(C, X), 197Au(197Au, X), E ≈ 0.8-2 GeV/nucleon; analyzed kaon multiplicity, azimuthal distribution; deduced medium effects.

doi: 10.1088/0954-3899/28/7/344
Citations: PlumX Metrics


2001ST01      Phys.Rev.Lett. 86, 39 (2001)

C.Sturm, I.Bottcher, M.Debowski, A.Forster, E.Grosse, P.Koczon, B.Kohlmeyer, F.Laue, M.Mang, L.Naumann, H.Oeschler, F.Puhlhofer, E.Schwab, P.Senger, Y.Shin, J.Speer, H.Strobele, G.Surowka, F.Uhlig, A.Wagner, W.Walus

Evidence for a Soft Nuclear Equation-of-State from Kaon Production in Heavy-Ion Collisions

NUCLEAR REACTIONS C(C, X), E=0.8-2.0 GeV/nucleon; 197Au(197Au, X), E=0.6-1.5 GeV/nucleon; measured pion, kaon production σ(E, θ), multiplicities; deduced soft nuclear equation of state.

doi: 10.1103/PhysRevLett.86.39
Citations: PlumX Metrics


2000LA37      Eur.Phys.J. A 9, 397 (2000)

F.Laue, I.Bottcher, M.Debowski, A.Forster, E.Grosse, P.Koczon, B.Kohlmeyer, M.Mang, M.Menzel, L.Naumann, H.Oeschler, F.Puhlhofer, E.Schwab, P.Senger, Y.Shin, J.Speer, H.Strobele, C.Sturm, G.Surowka, F.Uhlig, A.Wagner, W.Walus, and the KaoS Collaboration

Production of Charged Pions, Kaons and Antikaons in Relativistic C + C and C + Au Collisions

NUCLEAR REACTIONS C, 197Au(C, X), E=1.0, 1.8 GeV/nucleon; measured kaons, antikaons and charged pions production σ(θ), multiplicities, spectra. Dependence on entrance channel discussed. Comparison with Transport calculations.

doi: 10.1007/s100500070024
Citations: PlumX Metrics


2000WA19      Phys.Rev.Lett. 85, 18 (2000)

A.Wagner, C.Muntz, H.Oeschler, C.Sturm, R.Barth, M.Cieslak, M.Debowski, E.Grosse, P.Koczon, F.Laue, M.Mang, D.Miskowiec, E.Schwab, P.Senger, P.Beckerle, D.Brill, Y.Shin, H.Strobele, W.Walus, B.Kohlmeyer, F.Puhlhofer, J.Speer, I.K.Yoo

Emission Pattern of High-Energy Pions: A new probe for the early phase of heavy-ion collisions

NUCLEAR REACTIONS 197Au(197Au, X), E=1 GeV/nucleon; measured charged pions rapidity, transverse momentum, azimuthal distributions; deduced reaction mechanism features.

doi: 10.1103/PhysRevLett.85.18
Citations: PlumX Metrics


1999IW03      Phys.Rev.Lett. 83, 2910 (1999)

N.Iwasa, F.Boue, G.Surowka, K.Summerer, T.Baumann, B.Blank, S.Czajkowski, A.Forster, M.Gai, H.Geissel, E.Grosse, M.Hellstrom, P.Koczon, B.Kohlmeyer, R.Kulessa, F.Laue, C.Marchand, T.Motobayashi, H.Oeschler, A.Ozawa, M.S.Pravikoff, E.Schwab, W.Schwab, P.Senger, J.Speer, C.Sturm, A.Surowiec, T.Teranishi, F.Uhlig, A.Wagner, W.Walus, C.A.Bertulani

Measurement of the Coulomb Dissociation of 8B at 254 MeV/nucleon and the 8B Solar Neutrino Flux

NUCLEAR REACTIONS 208Pb(8B, p7Be), E ≈ 254 MeV/nucleon; measured reaction products yields, relative energy, angular correlations. 7Be(p, γ), E=low; deduced astrophysical S-factors.

doi: 10.1103/PhysRevLett.83.2910
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetA0162.


1999LA03      Phys.Rev.Lett. 82, 1640 (1999)

F.Laue, C.Sturm, I.Bottcher, M.Debowski, A.Forster, E.Grosse, P.Koczon, B.Kohlmeyer, M.Mang, L.Naumann, H.Oeschler, F.Puhlhofer, E.Schwab, P.Senger, Y.Shin, J.Speer, H.Strobele, G.Surowka, F.Uhlig, A.Wagner, W.Walus, and the KaoS Collaboration

Medium Effects in Kaon and Antikaon Production in Nuclear Collisions at Subthreshold Beam Energies

NUCLEAR REACTIONS C(12C, K+X), (12C, K-X), E=0.8-2.0 GeV/nucleon; measured kaon production σ(θ); deduced spectral slopes, antikaon reduced effective mass.

doi: 10.1103/PhysRevLett.82.1640
Citations: PlumX Metrics


1998WA09      Phys.Lett. 420B, 20 (1998)

A.Wagner, C.Muntz, H.Oeschler, C.Sturm, R.Barth, M.Cieslak, M.Dcebowski, E.Grosse, P.Koczon, M.Mang, D.Miskowiec, R.Schicker, E.Schwab, P.Senger, P.Beckerle, D.Brill, Y.Shin, H.Strobele, W.Walus, B.Kohlmeyer, F.Puhlhofer, J.Speer, K.Volkel

Evidence for Different Freeze-Out Radii of High- and Low-Energy Pions Emitted in Au + Au Collisions at 1 A.GeV

NUCLEAR REACTIONS 197Au(197Au, X), E=1 GeV/nucleon; measured pion production σ(θ); deduced reaction volume Coulomb potential.

doi: 10.1016/S0370-2693(97)01549-9
Citations: PlumX Metrics


1997AH02      Phys.Lett. 393B, 31 (1997)

W.Ahner, C.Bormann, R.Barth, P.Beckerle, D.Brill, M.Cieslak, M.Debowski, E.Grosse, W.Henning, P.Koczon, B.Kohlmeyer, D.Miskowiec, C.Muntz, H.Oeschler, F.Puhlhofer, E.Schwab, R.Schicker, P.Senger, Y.Shin, J.Speer, R.Stock, H.Strobele, Ch.Sturm, K.Volkel, A.Wagner, W.Walus

Pion and Kaon Emission from the Fireball Formed in Ne + NaF Collisions at 1-2 GeV/nucleon

NUCLEAR REACTIONS 23Na, 19F(Ne, X), E=1, 2 GeV/nucleon; measured π±, K± production associated σ(θ) vs momentum; deduced inverse slope parameters related features. Maxwell-Boltzmann distributions yield.

doi: 10.1016/S0370-2693(96)01568-7
Citations: PlumX Metrics


1997BR08      Z.Phys. A357, 207 (1997)

D.Brill, P.Beckerle, C.Bormann, E.Schwab, Y.Shin, H.Strobele, P.Baltes, C.Muntz, H.Oeschler, C.Sturm, A.Wagner, R.Barth, M.Cieslak, M.Debowski, E.Grosse, P.Koczon, M.Mang, D.Miskowiec, R.Schicker, P.Senger, B.Kohlmeyer, F.Puhlhofer, J.Speer, K.Volkel, W.Walus

Studies of the Out-of-Plane Emission of Pions in Symmetric Heavy-Ion Collisions

NUCLEAR REACTIONS 209Bi(209Bi, X), E=400-1000 MeV/nucleon; measured mid-rapidity pions production associated triple differential σ; deduced azimuthal emission patterns beam energy, impact parameter dependences.

doi: 10.1007/s002180050235
Citations: PlumX Metrics


1997MU12      Z.Phys. A357, 399 (1997)

C.Muntz, P.Baltes, H.Oeschler, C.Sartorius, C.Sturm, A.Wagner, C.Bormann, D.Brill, Y.Shin, J.Stein, H.Strobele, W.Ahner, R.Barth, M.Cieslak, M.Debowski, E.Grosse, W.Henning, P.Koczon, M.Mang, D.Miskowiec, R.Schicker, P.Senger, B.Kohlmeyer, H.Poppl, F.Puhlhofer, J.Speer, K.Volkel, W.Walus

Pion Production in Mass-Symmetric Heavy Ion Collisions at 0.8-1.8 AGeV

NUCLEAR REACTIONS 23Na, 19F(Ne, X), Ni(Ni, X), 197Au(197Au, X), Pb(209Bi, X), E=0.8-1.8 GeV/nucleon; measured charged pions, proton σ(θ) vs momentum; deduced multiple energetic baryon-baryon collisions role in high energy pion productions.

doi: 10.1007/s002180050259
Citations: PlumX Metrics


1996BR19      Z.Phys. A355, 61 (1996)

D.Brill, P.Beckerle, C.Bormann, E.Schwab, Y.Shin, R.Stock, H.Strobele, P.Baltes, C.Muntz, H.Oeschler, C.Sturm, A.Wagner, R.Barth, M.Cieslak, M.Debowski, E.Grosse, P.Koczon, M.Mang, D.Miskowiec, R.Schicker, P.Senger, B.Kohlmeyer, F.Puhlhofer, J.Speer, K.Volkel, W.Walus

Study of the Out-of-Plane Emission of Protons and Light Fragments in Symmetric Heavy-Ion Collisions

NUCLEAR REACTIONS 209Bi(209Bi, X), E=0.4-1 GeV/nucleon; measured protons midrapidity, light fragments production related features; deduced anisotropy vs E.

doi: 10.1007/s002180050078
Citations: PlumX Metrics


1996SE17      Acta Phys.Pol. B27, 2993 (1996)

P.Senger, W.Ahner, R.Barth, D.Brill, M.Debowski, E.Grosse, P.Koczon, B.Kohlmeyer, F.Laue, M.Mang, D.Miskowiec, Ch.Muntz, H.Oeschler, F.Puhlhofer, E.Schwab, Y.Shin, J.Speer, R.Stock, H.Strobele, Ch.Sturm, A.Wagner, W.Walus, for the KaoS Collaboration

Kaon Production in Relativistic Nucleus-Nucleus Collisions


1996WA41      Acta Phys.Pol. B27, 3081 (1996)

A.Wagner, R.Barth, P.Beckerle, D.Brill, M.Cieslak, M.Debowski, E.Grosse, W.Henning, P.Koczon, B.Kohlmeyer, F.Laue, M.Mang, D.Miskowiec, C.Muntz, W.Prokopowicz, F.Puhlhofer, H.Oeschler, E.Schwab, P.Senger, Y.Shin, J.Speer, R.Stock, H.Strobele, C.Sturm, K.Volkel, W.Walus, I.K.Yoo

On the Size of the Pion Emitting Source in Heavy Ion Collisions at 1 AGeV


1995MU12      Z.Phys. A352, 175 (1995)

C.Muntz, P.Baltes, H.Oeschler, A.Sartorius, A.Wagner, W.Ahner, R.Barth, M.Cieslak, M.Debowski, E.Grosse, W.Henning, P.Koczon, D.Miskowiec, R.Schicker, P.Senger, C.Bormann, D.Brill, Y.Shin, J.Stein, R.Stock, H.Strobele, B.Kohlmeyer, H.Poppl, F.Puhlhofer, J.Speer, K.Volkel, W.Walus

Properties of High-Energy Pions Emitted from Heavy-Ion Collisions at 1 GeV/nucleon

NUCLEAR REACTIONS 23Na, 19F(Ne, X), 197Au(197Au, X), E=1 GeV/nucleon; measured pion, proton production σ(θ) vs momentum; deduced resonance decay kinematics role.


1995WI05      Phys.Rev. C51, 680 (1995)

M.Wilpert, B.Gebauer, Th.Wilpert, W.von Oertzen, H.G.Bohlen, J.Speer

Cold Multinucleon Transfer and Formation of a Dinuclear Complex

NUCLEAR REACTIONS 54Fe(86Kr, 86Kr), (86Kr, X), E=291, 310 MeV; 56Fe(82Se, 82Se), (82Se, X), E=267 MeV; measured σ(θ), energy loss spectra, 1-4 proton transfers; deduced dinuclear complexes T1/2.

doi: 10.1103/PhysRevC.51.680
Citations: PlumX Metrics


1994MI09      Phys.Rev.Lett. 72, 3650 (1994)

D.Miskowiec, W.Ahner, R.Barth, M.Cieslak, M.Debowski, E.Grosse, W.Henning, P.Koczon, R.Schicker, E.Schwab, P.Senger, P.Baltes, Ch.Muntz, H.Oeschler, S.Sartorius, Ch.Sturm, A.Wagner, P.Beckerle, Ch.Bormann, D.Brill, Y.Shin, J.Stein, R.Stock, H.Strobele, B.Kohlmeyer, H.Poppl, F.Puhlhofer, J.Speer, K.Volkel, W.Walus

Observation of Enhanced Subthreshold K+ Production in Central Collisions between Heavy Nuclei

NUCLEAR REACTIONS 197Au(197Au, X), E=1 GeV/nucleon; measured σ(θ) vs momentum for p, π+, K+; deduced sub-thredhold K+ production evidence. Central collisions.

doi: 10.1103/PhysRevLett.72.3650
Citations: PlumX Metrics


1992KI14      Nucl.Phys. A541, 318 (1992)

J.Kiesewetter, K.-Th.Brinkmann, F.M.Baumann, M.Bergmann, H.Freiesleben, H.Gassel, B.Kohlmeyer, D.Schull, H.Sohlbach, J.Speer

Primary and Secondary Quasielastic Cross Sections from Reactions of 8A.MeV 116Sn with 48Ti

NUCLEAR REACTIONS 48Ti(116Sn, X), E=8 MeV/nucleon; measured primary, secondary fragment σ(θ, A, Z) vs total kinetic energy for quasielastic collisions, coincidence setup, identified sequential decay; deduced mean proton, neutron numbers, variances. Comparison of primary, secondary quantities; calculated potential energy surfaces, influence on mean values.

doi: 10.1016/0375-9474(92)90099-6
Citations: PlumX Metrics


1992VO10      J.Phys.(London) G18, 1773 (1992)

W.von Oertzen, J.Speer

Four-Nucleon and α-Particle Transfer between Heavy Nuclei

NUCLEAR REACTIONS 144Sm(208Pb, X), E=5.5, 5.8 MeV/nucleon; analyzed data; deduced two-, four-nucleon transfer function vs overlap parameter. Comparison with other data.

doi: 10.1088/0954-3899/18/11/010
Citations: PlumX Metrics


1991SP02      Phys.Lett. 259B, 422 (1991)

J.Speer, W.von Oertzen, D.Schull, M.Wilpert, H.G.Bohlen, B.Gebauer, B.Kohlmeyer, F.Puhlhofer

Cold Multi-Proton-Pair Transfer between 144Sm and 208Pb

NUCLEAR REACTIONS 144Sm(208Pb, X), E=5.5, 5.8 MeV/nucleon; measured multi-nucleon transfer probabilities; deduced cold multi-proton transfer evidence.

doi: 10.1016/0370-2693(91)91650-K
Citations: PlumX Metrics


1990KU03      Z.Phys. A336, 71 (1990)

R.Kunkel, W.von Oertzen, H.G.Bohlen, B.Gebauer, H.A.Bosser, B.Kohlmeyer, J.Speer, F.Puhlhofer, D.Schull

Pairing Effects in Nucleon Transfer Reactions in the System 144Sm + 88Sr at 4.7 MeV/u

NUCLEAR REACTIONS 88Sr(144Sm, X), (144Sm, 144Sm), E=4.7 MeV/nucleon; measured elastic σ(θ), product energy spectra, σ(fragment θ); deduced nucleon transfer probabilities, dominant transfer mechanism. DWBA analysis.


1988RY02      Z.Phys. A329, 123 (1988)

D.Rychel, B.v.Kruchten, M.Rech, J.Speer, B.Schurmann, C.A.Wiedner

Inelastic α-Scattering from 100Mo

NUCLEAR REACTIONS 100Mo(α, α'), E=32.2 MeV; measured σ(θ). 100Mo deduced levels, J, π, deformation length. DWBA calculations.


1987SC31      Nucl.Phys. A475, 361 (1987)

B.Schurmann, D.Rychel, B.van Kruchten, J.Speer, C.A.Wiedner

Inelastic Alpha-Scattering from the Stable Even Germanium Isotopes

NUCLEAR REACTIONS, MECPD 70,72,74,76Ge(α, α'), E=31.5 MeV; measured σ(θ). 70,72,74,76Ge deduced levels, J, π, isoscalar B(λ). Enriched targets. DWBA analysis.

doi: 10.1016/0375-9474(87)90171-0
Citations: PlumX Metrics


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