NSR Query Results
Output year order : Descending NSR database version of April 24, 2024. Search: Author = P.Wilhelm Found 25 matches. 1998AR05 Nucl.Phys. A631, 612c (1998) H.Arenhovel, G.Kress, R.Schmidt, P.Wilhelm On the Gerasimov-Drell-Hearn Sum Rule for the Deuteron
doi: 10.1016/S0375-9474(98)00077-3
1998SC13 Nucl.Phys. A631, 583c (1998) M.Schwamb, H.Arenhovel, P.Wilhelm, Th.Wilbois Explicit Pionic Degrees of Freedom in Deuteron Photodisintegration in the Δ-Resonance Region NUCLEAR REACTIONS 2H(γ, p), E=200-440 MeV; calculated total σ, σ(θ), photon asymmetries. Retarded potentials, coupled channels approach. Comparison with data.
doi: 10.1016/S0375-9474(98)00071-2
1998SC17 Phys.Lett. 420B, 255 (1998) M.Schwamb, H.Arenhovel, P.Wilhelm, Th.Wilbois Meson Retardation in Deuteron Photodisintegration Above π-Threshold NUCLEAR REACTIONS 2H(γ, n), E=200-440 MeV; analyzed σ(θ), σ; deduced meson retardation role.
doi: 10.1016/S0370-2693(97)01532-3
1998WI03 Phys.Rev. C57, 295 (1998) Th.Wilbois, P.Wilhelm, H.Arenhovel Extraction of Electromagnetic Properties of the Δ(1232) Excitation from Pion Photoproduction
doi: 10.1103/PhysRevC.57.295
1997AR16 Phys.Lett. 407B, 1 (1997) H.Arenhovel, G.Kress, R.Schmidt, P.Wilhelm The Spin Response of the Deuteron and Its Implication for the Gerasimov-Drell-Hearn Sum Rule NUCLEAR REACTIONS 2H(γ, X), E ≤ 550 MeV; calculated pion production photodisintegration σ. Gerasimov-Drell-Hearn sum rule.
doi: 10.1016/S0370-2693(97)00697-7
1997PE08 Phys.Rev.Lett. 78, 4011 (1997) A.Pellegrino, H.Arenhovel, H.P.Blok, D.van Dierendonck, G.E.Dodge, W.H.A.Hesselink, E.Jans, N.Kalantar-Nayestanaki, W.-J.Kasdorp, L.Lapikas, J.J.van Leeuwe, W.Leidemann, A.Misiejuk, C.J.G.Onderwater, G.van der Steenhoven, R.Starink, J.J.M.Steijger, J.A.Templon, J.L.Visschers, T.Wilbois, P.Wilhelm, H.W.Willering, D.M.Yeomans Deuteron Electrodisintegration in the Δ-Resonance Region NUCLEAR REACTIONS 2H(e, e'p), E=525 MeV; measured σ(θ(e), θ(np)) vs electron momentum, transverse-transverse interference structure function; deduced Δ excitation role dominance.
doi: 10.1103/PhysRevLett.78.4011
1997WI14 Phys.Rev. C56, R1215 (1997) Unitarity Constraint for Threshold Coherent Pion Photoproduction on the Deuteron NUCLEAR REACTIONS 2H(γ, π0), E not given; calculated reaction amplitudes; deduced absorptive two-step process role.
doi: 10.1103/PhysRevC.56.R1215
1997WI26 Z.Phys. A359, 467 (1997) P.Wilhelm, H.Arenhovel, C.Giusti, F.D.Pacati Treatment of the Δ Current in Electromagnetic Two-Nucleon Knockout Reactions NUCLEAR REACTIONS 16O(γ, 2p), E=50-400 MeV; calculated σ(E, θ); deduced Δ-current dependence.
doi: 10.1007/s002180050428
1996SC23 Z.Phys. A355, 421 (1996) R.Schmidt, H.Arenhovel, P.Wilhelm Quasifree Pion Photoproduction on the Deuteron in the Δ Region NUCLEAR REACTIONS 1n(γ, π-), 1H(γ, π+), (γ, π0), E=threshold-500 MeV; 2H(γ, π-p), (γ, π+n), (γ, π0p), E=threshold-500 MeV; calculated σ(E). 2H(γ, π-p), E=250-350 MeV; calculated σ(θ). Spectator nucleon model, quasifree pion photoproduction.
doi: 10.1007/s002180050132
1996WI03 Nucl.Phys. A597, 613 (1996) P.Wilhelm, J.A.Niskanen, H.Arenhovel Signatures from Polarization Observables for Photon Absorption on a 1S0 Proton Pair
doi: 10.1016/0375-9474(95)00458-0
1996WI13 Phys.Rev. C54, 1423 (1996) P.Wilhelm, Th.Wilbois, H.Arenhovel Unitary Ambiguity in the Extraction of the E2/M1 Ratio for the γN → Δ Δ → γN Transition
doi: 10.1103/PhysRevC.54.1423
1996WI19 Nucl.Phys. A609, 469 (1996) Rescattering Effects in Coherent Pion Photoproduction on the Deuteron in the Δ Resonance Region NUCLEAR REACTIONS 2H(π, π), E=142-254 MeV; calculated σ(θ). 2H(γ, π0), (polarized γ, π0), E=200-440 MeV; calculated σ(E), σ(θ), photon, tensor target asymmetry. Dynamical model, rescattering effects.
doi: 10.1016/S0375-9474(96)00277-1
1996WI21 Phys.Rev. C54, 3311 (1996) Th.Wilbois, P.Wilhelm, H.Arenhovel Comment on ' Multinucleon Mechanisms in (γ, N) and (γ, NN) Reactions ' NUCLEAR REACTIONS 2H(γ, X), E=200-400 MeV; calculated photodisintegration σ vs E; deduced Δ-propagation associated ansatz related features.
doi: 10.1103/PhysRevC.54.3311
1995BL13 Phys.Rev. C52, R455 (1995) G.Blanpied, M.Blecher, A.Caracappa, C.Djalali, M.-A.Duval, G.Giordano, K.Hicks, S.Hoblit, M.Khandaker, O.C.Kistner, G.Matone, L.Miceli, W.K.Mize, B.M.Preedom, D.Rebreyend, A.M.Sandorfi, C.Schaerf, R.M.Sealock, C.E.Thorn, S.T.Thornton, K.Vaziri, C.S.Whisnant, X.Zhao, P.Wilhelm, H.Arenhovel, and the LEGS Collaboration New Measurements of 2H(polarized γ, p)n and Spin Problems in Coupled NΔ/NN Interactions NUCLEAR REACTIONS, ICPND 2H(polarized γ, p), E=113-315 MeV; measured σ(θ) vs E, σ(E). Tagged beam. NΔ/NN coupled-channel analysis.
doi: 10.1103/PhysRevC.52.R455
1995NI07 Nucl.Phys. A586, 693 (1995) J.A.Niskanen, P.Wilhelm, H.Arenhovel Quasifree Photoabsorption on Neutron-Proton Pairs in 3He NUCLEAR REACTIONS 3He(γ, np), (polarized γ, np), E=200-400 MeV; calculated photoabsorption σ(E), σ(θp), proton polarization, analyzing power, asymmetry vs θ. Quasifree absorption, nucleonic, meson exchange currents, Δ(1232)-isobar excitation.
doi: 10.1016/0375-9474(95)00037-2
1995NI13 Phys.Lett. 359B, 295 (1995) Pion vs. Photon Absorption on the Deuteron NUCLEAR REACTIONS 2H(π+, p), E not given; calculated absorption σ vs pion momentum. 2H(γ, n), E=140-440 MeV; calculated photodisintegration σ(E).
doi: 10.1016/0370-2693(95)01105-Y
1995SC58 Few-Body Systems 19, 121 (1995) M.Schwamb, H.Arenhovel, P.Wilhelm Role of the D13 and S11 Resonances in Deuteron Photodisintegration NUCLEAR REACTIONS 2H(γ, p), E ≤ 800 MeV; analyzed σ(θ), proton polarization vs θ; deduced D13, S11 resonances role.
doi: 10.1007/s006010050021
1995WI14 Phys.Rev.Lett. 74, 1034 (1995) P.Wilhelm, H.Arenhovel, J.A.Niskanen Comment on ' Total Cross Section for Photon Absorption by Two Protons in 3He ' NUCLEAR REACTIONS 3He(γ, X), E ≈ 200-500 MeV; analyzed, reanalyzed σ(E) data analyses; deduced nonnegligible E1 multipole contribution.
doi: 10.1103/PhysRevLett.74.1034
1995WI16 Phys.Rev. C51, 2841 (1995) P.Wilhelm, J.A.Niskanen, H.Arenhovel Photon Absorption on a Proton-Proton Pair in 3He NUCLEAR REACTIONS 3He(γ, 2p), E=100-500 MeV; analyzed σ(E); deduced various multipole contributions, photon absorption mechanism, Δ role. Different models.
doi: 10.1103/PhysRevC.51.2841
1995WI22 Nucl.Phys. A593, 435 (1995) Coherent Pion Photoproduction on the Deuteron in the Δ Resonance Region NUCLEAR REACTIONS 2H(γ, π0), E ≈ 200-400 MeV; calculated coherent pion production σ(E), σ(θ). 2H(polarized γ, π0), (γ, π0), E=300 MeV; calculated photon asymmetry, target vector, tensor asymmetry vs θ. Time-ordered perturbation theory based nonrelativistic model, no rescattering.
doi: 10.1016/0375-9474(95)00348-5
1994WI12 Phys.Lett. 335B, 109 (1994) P.Wilhelm, J.A.Niskanen, H.Arenhovel Photon Absorption on a Neutron-Proton Pair in 3He NUCLEAR REACTIONS 3He(γ, np), E=245 MeV; calculated σ(θ); deduced spectator role importance. Quasifree two-body model.
doi: 10.1016/0370-2693(94)91399-4
1993WI20 Phys.Lett. 318B, 410 (1993) Photodisintegration of the Deuteron in the Δ-Resonance Region NUCLEAR REACTIONS, ICPND 2H(γ, p), (polarized γ, p), E=140-500 keV; calculated σ vs E, σ(θp), neutron, proton polarization vs θ. Final state interactions, NN-NΔ coupled channels approach, pion degrees of freedom.
doi: 10.1016/0370-2693(93)91532-R
1992DE04 Phys.Rev. C45, 860 (1992) A.De Graeve, R.Van de Vyver, A.Zieger, C.Van den Abeele, L.Van Hoorebeke, D.Ryckbosch, H.Ferdinande, F.De Smet, B.Ziegler, P.Wilhelm, H.Arenhovel Absolute Total Cross Sections for Deuteron Photodisintegration between 7 and 19 MeV NUCLEAR REACTIONS 2H(γ, p), E=7-19 MeV; measured σ(E, θ), θ=0°, 90°, 180°; deduced absolute total photodisintegration σ.
doi: 10.1103/PhysRevC.45.860
1991SC31 Few-Body Systems 10, 105 (1991) K.-M.Schmitt, P.Wilhelm, H.Arenhovel Deuteron Photodisintegration at Low Energies NUCLEAR REACTIONS 2H(γ, p), E < 40 MeV; analyzed σ(θ), other data. Conventional model analysis.
doi: 10.1007/BF01083045
1990SC04 Phys.Rev. C41, 841 (1990) K.-M.Schmitt, P.Wilhelm, H.Arenhovel, A.Cambi, B.Mosconi, P.Ricci Gauge Dependence of Nonrelativistic Calculations of Deuteron Photodisintegration NUCLEAR REACTIONS 2H(γ, p), (γ, n), E=30-140 MeV; calculated photodisintegration σ(θ); deduced gauge dependence. Nonrelativistic model.
doi: 10.1103/PhysRevC.41.841
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