NSR Query Results
Output year order : Descending NSR database version of March 21, 2024. Search: Author = J.Speer Found 23 matches. 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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
1992VO10 J.Phys.(London) G18, 1773 (1992) 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
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
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
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