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Search: Author = M.Schumacher

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2011SC10      Nucl.Phys. A858, 48 (2011)

M.Schumacher, M.I.Levchuk

Structure of the nucleon and spin-polarizabilities

NUCLEAR REACTIONS 1n, 1H(γ, X), E=0-2000 MeV; calculated σ, spin, electric, magnetic polarizabilities. Comparison with other calculations.

doi: 10.1016/j.nuclphysa.2011.04.002
Citations: PlumX Metrics


2009SC16      Nucl.Phys. A826, 131 (2009)

M.Schumacher

Polarizabilities of the nucleon and spin dependent photo-absorption

NUCLEAR STRUCTURE 1n, 1H; analyzed electromagnetic and backward spin polarizabilities, resonance contributions, radiative widths and related features in terms of the Gerasimov?Drell?Hearn sum rule. Comparison with data.

doi: 10.1016/j.nuclphysa.2009.05.093
Citations: PlumX Metrics


2007SC12      Eur.Phys.J. A 31, 327 (2007)

M.Schumacher

Electromagnetic polarizabilities and the excited states of the nucleon

NUCLEAR STRUCTURE 1n, 1H; analyzed electromagnetic polarizabilities, resonance contributions, related features.

doi: 10.1140/epja/i2006-10235-1
Citations: PlumX Metrics


2007SC43      Eur.Phys.J. A 34, 293 (2007)

M.Schumacher

Properties of the π0, η, η', σ, f0(980) and a0(980) mesons and their relevance for the polarizabilities of the nucleon

NUCLEAR STRUCTURE 1n, 1H; analyzed electromagnetic and backward spin polarizabilities, related features.

doi: 10.1140/epja/i2007-10506-3
Citations: PlumX Metrics


2006LE27      Phys.Rev. C 74, 014004 (2006)

M.I.Levchuk, A.Yu.Loginov, A.A.Sidorov, V.N.Stibunov, M.Schumacher

Incoherent pion photoproduction on the deuteron in the first resonance region

NUCLEAR REACTIONS 2H(γ, π0p), (γ, π-p), E ≈ 150-500 MeV; calculated σ(θ), σ, asymmetries. Comparison with data.

doi: 10.1103/PhysRevC.74.014004
Citations: PlumX Metrics


2006SC26      Eur.Phys.J. A 30, 413 (2006); Erratum Eur.Phys.J. A 32, 121 (2007)

M.Schumacher

Electromagnetic polarizabilities of the nucleon and properties of the σ-meson pole contribution

NUCLEAR STRUCTURE 1n, 1H; calculated electromagnetic polarizabilities, σ-meson pole contribution.

doi: 10.1140/epja/i2006-10103-0
Citations: PlumX Metrics


2005AH07      Eur.Phys.J. A 26, 135 (2005)

J.Ahrens, S.Altieri, J.R.M.Annand, H.-J.Arends, R.Beck, A.Braghieri, N.d'Hose, H.Dutz, S.Goertz, P.Grabmayr, S.Hasegawa, E.Heid, H.Holvoet, L.Van Hoorebeke, N.Horikawa, T.Iwata, O.Jahn, P.Jennewein, R.Kondratiev, J.Krimmer, M.Lang, B.Lannoy, K.Livingston, J.C.McGeorge, W.Meyer, A.Panzeri, P.Pedroni, T.Pinelli, I.Preobrajenski, G.Reicherz, G.Rosner, M.Rost, T.Rostomyan, D.Ryckbosch, M.Schumacher, B.Seitz, G.Tamas, A.Thomas, R.van de Vyver, Th.Walcher, F.Zapadtka

Measurement of the G asymmetry for the γp → Nπ channels in the Δ(1232) resonance region

NUCLEAR REACTIONS 1H(polarized γ, π0), (polarized γ, π+), e ≈ 340 MeV; measured σ(θ), G asymmetries, related polarization observables. Polarized target.

doi: 10.1140/epja/i2005-10158-3
Citations: PlumX Metrics


2005SC15      Prog.Part.Nucl.Phys. 55, 567 (2005)

M.Schumacher

Polarizability of the nucleon and Compton scattering

doi: 10.1016/j.ppnp.2005.01.033
Citations: PlumX Metrics


2004KO11      Eur.Phys.J. A 19, 391 (2004)

K.Kossert, M.Camen, F.Wissmann, J.Ahrens, J.R.M.Annand, H.-J.Arends, R.Beck, G.Caselotti, P.Grabmayr, O.Jahn, P.Jennewein, M.I.Levchuk, A.I.L'vov, J.C.McGeorge, A.Natter, V.Olmos de Leon, V.A.Petrunkin, G.Rosner, M.Schumacher, B.Seitz, F.Smend, A.Thomas, W.Weihofen, F.Zapadtka

Quasi-free π0 photoproduction from the bound nucleon

NUCLEAR REACTIONS 2H(γ, π0n), (γ, π0p), E=200-400 MeV; 1H(γ, π0), E=200-400 MeV; measured σ(E, θ). 1n(γ, π0), E=300 MeV; deduced quasifree σ(θ).

doi: 10.1140/epja/i2003-10130-3
Citations: PlumX Metrics


2003AH01      Phys.Lett. 551B, 49 (2003)

J.Ahrens, S.Altieri, J.R.M.Annand, G.Anton, H.-J.Arends, K.Aulenbacher, R.Beck, C.Bradtke, A.Braghieri, N.Degrande, N.d'Hose, H.Dutz, S.Goertz, P.Grabmayr, K.Hansen, J.Harmsen, D.von Harrach, S.Hasegawa, T.Hasegawa, E.Heid, K.Helbing, H.Holvoet, L.Van Hoorebeke, N.Horikawa, T.Iwata, O.Jahn, P.Jennewein, T.Kageya, B.Kiel, F.Klein, R.Kondratiev, K.Kossert, J.Krimmer, M.Lang, B.Lannoy, R.Leukel, V.Lisin, T.Matsuda, J.C.McGeorge, A.Meier, D.Menze, W.Meyer, T.Michel, J.Naumann, A.Panzeri, P.Pedroni, T.Pinelli, I.Preobrajenski, E.Radtke, E.Reichert, G.Reicherz, Ch.Rohlof, G.Rosner, T.Rostomyan, C.Rovelli, D.Ryckbosch, M.Sauer, B.Schoch, M.Schumacher, B.Seitz, T.Speckner, N.Takabayashi, G.Tamas, A.Thomas, R.van de Vyver, A.Wakai, W.Weihofen, F.Wissmann, F.Zapadtka, G.Zeitler, and the GDH and A2 Collaborations

Helicity dependence of the γ(pol)p(pol) → nπ+π0 reaction in the second resonance region

NUCLEAR REACTIONS 1H(polarized γ, π+π0), E=400-800 MeV; measured σ, helicity dependence; deduced resonance features. Polarized target.

doi: 10.1016/S0370-2693(02)03008-3
Citations: PlumX Metrics


2003KO08      Eur.Phys.J. A 16, 259 (2003)

K.Kossert, M.Camen, F.Wissmann, J.Ahrens, J.R.M.Annand, H.-J.Arends, R.Beck, G.Caselotti, P.Grabmayr, O.Jahn, P.Jennewein, M.I.Levchuk, A.I.L'vov, J.C.McGeorge, A.Natter, V.Olmos de Leon, V.A.Petrun'kin, G.Rosner, M.Schumacher, B.Seitz, F.Smend, A.Thomas, W.Weihofen, F.Zapadtka

Quasi-free Compton scattering and the polarizabilities of the neutron

NUCLEAR REACTIONS 1H(γ, γ'), E=200-400 MeV; 2H(γ, γ'n), (γ, γ'p), E=200-400 MeV; measured Eγ, Ep, En, σ(E, θ). 1n(γ, γ'), E=200-400 MeV; deduced σ(E, θ). 1n deduced polarizabilities. Tagged photons.

doi: 10.1140/epja/i2002-10093-9
Citations: PlumX Metrics


2003LU07      Phys.Rev.Lett. 90, 192501 (2003)

M.Lundin, J.-O.Adler, M.Boland, K.Fissum, T.Glebe, K.Hansen, L.Isaksson, O.Kaltschmidt, M.Karlsson, K.Kossert, M.I.Levchuk, P.Lilja, B.Lindner, A.I.Lvov, B.Nilsson, D.E.Oner, C.Poech, S.Proff, A.Sandell, B.Schroder, M.Schumacher, D.A.Sims

Compton Scattering from the Deuteron and Extracted Neutron Polarizabilities

NUCLEAR REACTIONS 2H(γ, γ'), E=55, 66 MeV; measured σ(E, θ); deduced isospin-averaged nucleon polarizabilities. 1n deduced electric and magnetic polarizabilities. Liquid target, tagged photons.

doi: 10.1103/PhysRevLett.90.192501
Citations: PlumX Metrics


2003SC31      Nucl.Phys. A721, 773c (2003)

M.Schumacher

Studies on the electromagnetic structure of the nucleon by free and quasi-free Compton scattering at MAMI (Mainz)

NUCLEAR REACTIONS 1,2H(γ, γ'), E not given; analyzed σ(θ). 1n, 1H deduced polarizability, other structure parameters.

doi: 10.1016/S0375-9474(03)01178-3
Citations: PlumX Metrics


2002CA13      Phys.Rev. C65, 032202 (2002)

M.Camen, K.Kossert, F.Wissmann, J.Ahrens, H.-J.Arends, R.Beck, G.Caselotti, P.Grabmayr, P.D.Harty, O.Jahn, P.Jennewein, R.Kondratiev, M.I.Levchuk, V.Lisin, A.I.Lvov, J.C.McGeorge, A.Natter, V.Olmos de Leon, M.Schumacher, B.Seitz, F.Smend, A.Thomas, W.Weihofen, F.Zapadtka

Backward Spin Polarizability γπ of the Proton

NUCLEAR REACTIONS 1H(γ, γ), E=200-470 MeV; measured Compton scattering σ(θ=136°), pγ-coin. 1H deduced backward spin polarizability. Comparisons with model predictions, previous results.

doi: 10.1103/PhysRevC.65.032202
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetM0730.


2002HE08      Eur.Phys.J. A 13, 493 (2002)

V.Hejny, J.Weiss, P.Achenbach, J.Ahrens, J.R.M.Annand, R.Beck, M.Kotulla, B.Krusche, V.Kuhr, R.Leukel, I.J.D.MacGregor, V.Metag, R.Novotny, V.Olmos de Leon, F.Rambo, A.Schmidt, M.Schumacher, U.Siodlaczek, H.Stroher, F.Wissmann, M.Wolf

Threshold Enhancement in η Photoproduction from 2H and 4He

NUCLEAR REACTIONS 2H, 4He(γ, X), E ≈ 590-680 MeV; measured η meson production σ, σ(θ), momentum distributions; deduced enhancement relative to model prediction. Tagged photons.

doi: 10.1007/s10050-002-8779-0
Citations: PlumX Metrics


2002KO21      Phys.Rev.Lett. 88, 162301 (2002)

K.Kossert, M.Camen, F.Wissmann, J.Ahrens, J.R.M.Annand, H.-J.Arends, R.Beck, G.Caselotti, P.Grabmayr, O.Jahn, P.Jennewein, M.I.Levchuk, A.I.Lvov, J.C.McGeorge, A.Natter, V.Olmos de Leon, V.A.Petrunkin, G.Rosner, M.Schumacher, B.Seitz, F.Smend, A.Thomas, W.Weihofen, F.Zapadtka

Neutron Polarizabilities Investigated by Quasifree Compton Scattering from the Deuteron

NUCLEAR REACTIONS 2H(γ, n), E=200-400 MeV; measured Eγ, nγ-coin. 1n deduced polarizabilities.

doi: 10.1103/PhysRevLett.88.162301
Citations: PlumX Metrics


2002LE24      Phys.Lett. 541B, 87 (2002)

R.N.Lee, A.I.Milstein, M.Schumacher

Electric Polarizabilities of Proton and Neutron and the Relativistic Center-of-Mass Coordinate

NUCLEAR STRUCTURE 1n, 1H; calculated charge radii, electric polarizabilities. Relativistic correction to center-of-mass vector.

doi: 10.1016/S0370-2693(02)02226-8
Citations: PlumX Metrics


2001GA28      Phys.Lett. 503B, 245 (2001)

G.Galler, V.Lisin, R.Kondratev, A.M.Massone, S.Wolf, J.Ahrens, H.-J.Arends, R.Beck, M.Camen, G.P.Capitani, P.Grabmayr, S.J.Hall, F.Harter, T.Hehl, P.Jennewein, K.Kossert, A.I.Lvov, C.Molinari, P.Ottonello, J.Peise, I.Preobrajenski, S.Proff, A.Robbiano, M.Sanzone, M.Schumacher, M.Schmitz, F.Wissmann

Compton Scattering by the Proton

NUCLEAR REACTIONS 1H(γ, γ'), E=250-800 MeV; measured recoil proton spectra, γ spectra, σ(θ); deduced multipole ratio for resonance production, proton backward spin polarizability. Tagged photons, large-acceptance spectrometer.

doi: 10.1016/S0370-2693(01)00231-3
Citations: PlumX Metrics


2001OL04      Eur.Phys.J. A 10, 207 (2001)

V.Olmos de Leon, F.Wissmann, P.Achenbach, J.Ahrens, H.-J.Arends, R.Beck, P.D.Harty, V.Hejny, P.Jennewein, M.Kotulla, B.Krusche, V.Kuhr, R.Leukel, J.C.McGeorge, V.Metag, R.Novotny, A.Polonsky, F.Rambo, A.Schmidt, M.Schumacher, U.Siodlaczek, H.Stroher, A.Thomas, J.Weiss, M.Wolf

Low-Energy Compton Scattering and the Polarizabilities of the Proton

NUCLEAR REACTIONS 1H(γ, γ'), E=55-165 MeV; measured Eγ, σ(θ). 1H deduced electromagnetic polarizabilities.

doi: 10.1007/s100500170132
Citations: PlumX Metrics


2001WO09      Nucl.Phys. A690, 310c (2001)

S.Wolf, V.Lisin, R.Kondratiev, A.M.Massone, G.Galler, J.Ahrens, H.-J.Arends, R.Beck, M.Camen, G.P.Capitani, P.Grabmayr, S.J.Hall, F.Harter, T.Hehl, P.Jennewein, K.Kossert, A.I.Lvov, C.Molinari, P.Ottonello, J.Peise, I.Preobrajensky, S.Proff, A.Robbiano, M.Sanzone, M.Schumacher, M.Schmitz, F.Wissmann

Structure of the Nucleon Investigated by Compton Scattering

NUCLEAR REACTIONS 1H(γ, γ'), E ≈ 200-800; measured σ(θ); deduced nucleon structure parameters.

doi: 10.1016/S0375-9474(01)00965-4
Citations: PlumX Metrics


2001WO12      Eur.Phys.J. A 12, 231 (2001)

S.Wolf, V.Lisin, R.Kondratiev, A.M.Massone, G.Galler, J.Ahrens, H.-J.Arends, R.Beck, M.Camen, G.P.Capitani, P.Grabmayr, F.Harter, T.Hehl, P.Jennewein, K.Kossert, A.I.Lvov, C.Molinari, P.Ottonello, R.O.Owens, J.Peise, I.Preobrajensky, S.Proff, A.Robbiano, M.Sanzone, M.Schumacher, M.Schmitz, F.Wissmann

Compton Scattering by the Proton using a Large-Acceptance Arrangement

NUCLEAR REACTIONS 1H(γ, γ), E ≈ 250-800 MeV; measured Eγ, σ(θ); deduced backward spin polarizability. Comparison with model predictions. Tagged photon beam, large-acceptance experiment.

doi: 10.1007/s100500170031
Citations: PlumX Metrics


2000HU01      Phys.Rep. 323, 457 (2000)

M.-Th.Hutt, A.I.Lvov, A.I.Milstein, M.Schumacher

Compton Scattering by Nuclei

doi: 10.1016/S0370-1573(99)00041-1
Citations: PlumX Metrics


2000KL12      Eur.Phys.J. A 9, 1 (2000)

V.Kleber, P.Achenbach, J.Ahrens, R.Beck, V.Hejny, J.D.Kellie, M.Kotulla, B.Krusche, V.Kuhr, R.Leukel, V.Metag, R.Novotny, V.Olmos de Leon, R.O.Owens, F.Rambo, A.Schmidt, M.Schumacher, U.Siodlaczek, H.Stroher, J.Weiss, F.Wissmann, M.Wolf

Double-π0 Photoproduction from the Deuteron

NUCLEAR REACTIONS 2H(γ, 2π0X), E=200-820 MeV; measured two-pion production σ, invariant mass distributions. 1n(γ, 2π0X), E=400-820 MeV; deduced two-pion production σ. Tagged photons.

doi: 10.1007/s100500070047
Citations: PlumX Metrics


2000LE26      Nucl.Phys. A675, 621 (2000)

M.I.Levchuk, M.Schumacher, F.Wissmann

The Reaction 2H(γ, π0)np in the Threshold Region

NUCLEAR REACTIONS 2H(γ, π0n), E=142-160 MeV; calculated σ(E, θ). Comparison between Chiral Perturbation and Dispersion Relation theory.

doi: 10.1016/S0375-9474(00)00185-8
Citations: PlumX Metrics


2000SI10      Nucl.Phys. A663-664, 428c (2000)

U.Siodlaczek, P.Achenbach, J.Ahrens, H.-J.Arends, R.Beck, R.Bilger, H.Clement, V.Hejny, M.Kotulla, B.Krusche, V.Kuhr, R.Leukel, V.Metag, R.Novotny, V.Olmos de Leon, F.Rambo, M.Schepkin, A.Schmidt, M.Schumacher, H.Stroher, G.J.Wagner, Th.Walcher, J.Weiss, F.Wissmann, M.Wolf

Measurement of Coherent and Incoherent π0 Photoproduction Off the Deuteron with Tagged Photons Up to the Δ Region

NUCLEAR REACTIONS 2H(γ, π0), E=130-306 MeV; measured pions missing energy spectra, σ(θ). Tagged photons.

doi: 10.1016/S0375-9474(99)00675-2
Citations: PlumX Metrics


2000WI05      Nucl.Phys. A663-664, 397c (2000)

F.Wissmann, P.Achenbach, J.Ahrens, H.-J.Arends, R.Beck, R.Bilger, M.Camen, G.P.Capitani, G.Caselotti, G.Galler, P.Grabmayr, F.Harter, T.Hehl, E.Heid, V.Hejny, O.Jahn, P.Jennewein, R.Kondratev, K.Kossert, M.Kotulla, B.Krusche, V.Kuhr, M.Lang, R.Leukel, M.I.Levchuk, V.Lisin, A.I.Lvov, A.M.Massone, V.Metag, A.Natter, R.Novotny, V.Olmos de Leon, P.Ottonello, J.Peise, A.Polonsky, I.Preobrashenskij, S.Proff, F.Rambo, A.Robbiano, D.Rosenkranz, M.Sanzone, E.Schilling, A.Schmidt, M.Schumacher, B.Seitz, U.Siodlaczek, F.Smend, H.Stroher, H.Vorwerk, Th.Walcher, J.Weiss, M.Wolf, S.Wolf, F.Zapadtka

Compton Scattering from the Free and Bound Proton Above π-Threshold

NUCLEAR REACTIONS 1,2H(γ, γ'X), E=200-800 MeV; measured σ(θ).

doi: 10.1016/S0375-9474(99)00626-0
Citations: PlumX Metrics


2000WO12      Eur.Phys.J. A 9, 5 (2000)

M.Wolf, J.Ahrens, R.Beck, V.Hejny, J.D.Kellie, M.Kotulla, B.Krusche, V.Kuhr, R.Leukel, V.Metag, J.C.Nacher, R.Novotny, V.Olmos de Leon, R.O.Owens, F.Rambo, A.Schmidt, M.Schumacher, U.Siodlaczek, H.Stroher, J.Weiss, F.Wissmann

Photoproduction of Neutral Pion Pairs from the Proton

NUCLEAR REACTIONS 1H(γ, 2π0X), E=300-820 MeV; measured two-pion production σ, invariant mass distributions. Tagged photons.

doi: 10.1007/s100500070048
Citations: PlumX Metrics


1999HE27      Eur.Phys.J. A 6, 83 (1999)

V.Hejny, P.Achenbach, J.Ahrens, R.Beck, S.J.Hall, M.Kotulla, B.Krusche, V.Kuhr, R.Leukel, V.Metag, R.Novotny, V.Olmos de Leon, R.O.Owens, F.Rambo, A.Schmidt, M.Schumacher, U.Siodlaczek, H.Stroher, F.Wissmann, J.Weiss, M.Wolf

Near Threshold Photoproduction of η Mesons from 4He

NUCLEAR REACTIONS 4He(γ, X), E=threshold-818 MeV; measured η meson exclusive and inclusive production σ, σ(θ); deduced neutron, proton, coherent contributions. Tagged photons.

doi: 10.1007/s100500050320
Citations: PlumX Metrics


1999PR01      Nucl.Phys. A646, 67 (1999)

S.Proff, C.Poch, T.Glebe, J.-O.Adler, K.Fissum, K.Hansen, M.-Th.Hutt, O.Kaltschmidt, M.Lundin, B.Nilsson, B.Schroder, M.Schumacher, D.Sims, F.Smend, F.Wissmann

Electromagnetic Polarizabilities of Nucleons Bound in 40Ca, 16O and 4He

NUCLEAR REACTIONS 40Ca(γ, γ), E=58, 74 MeV; 4He, 16O(γ, γ), E=61 MeV; measured σ(θ); deduced nucleons in-medium electromagnetic polarizabilities.

doi: 10.1016/S0375-9474(98)00636-8
Citations: PlumX Metrics


1999RA29      Nucl.Phys. A660, 69 (1999)

F.Rambo, P.Achenbach, J.Ahrens, H.-J.Arends, R.Beck, S.J.Hall, V.Hejny, P.Jennewein, S.S.Kamalov, M.Kotulla, B.Krusche, V.Kuhr, R.Leukel, V.Metag, R.Novotny, V.Olmos de Leon, A.Schmidt, M.Schumacher, U.Siodlaczek, F.Smend, H.Stroher, J.Weiss, F.Wissmann, M.Wolf

Coherent π0 Photoproduction from 4He

NUCLEAR REACTIONS 4He(γ, π0), E=200-400 MeV; measured σ, σ(θ); deduced in-medium modification of Δ resonance parameters. Tagged coherent bremsstrahlung beam, DWIA analysis.

doi: 10.1016/S0375-9474(99)00383-8
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetM0752.


1999WI15      Nucl.Phys. A660, 232 (1999)

F.Wissmann, V.Kuhr, O.Jahn, H.Vorwerk, P.Achenbach, J.Ahrens, H.-J.Arends, R.Beck, M.Camen, G.Caselotti, E.Heid, V.Hejny, P.Jennewein, R.Kondratev, K.Kossert, M.Kotulla, B.Krusche, M.Lang, R.Leukel, M.I.Levchuk, V.Lisin, V.Metag, R.Novotny, V.Olmos de Leon, A.Polonsky, I.Preobrashenskij, F.Rambo, D.Rosenkranz, E.Schilling, A.Schmidt, M.Schumacher, B.Seitz, U.Siodlaczek, H.Stroher, A.Thomas, Th.Walcher, J.Weiss, M.Wolf, F.Zapadtka

Compton Scattering from the Free and Bound Proton at Backward Angles Above π-Threshold

NUCLEAR REACTIONS 1H(γ, γ'), E=200-410 MeV; 2H(γ, γ'), E=200-290 MeV; measured Eγ, σ(θ); deduced proton spin polarizabilities. Dispersion theory.

doi: 10.1016/S0375-9474(99)00419-4
Citations: PlumX Metrics


1998BE59      Nucl.Phys. A639, 209c (1998)

C.Bennhold, S.Goers, J.Barth, W.Braun, R.Burgwinkel, J.Ernst, K.H.Glander, J.Hannappel, N.Jopen, H.Kalinowsky, U.Kirch, F.Klein, F.J.Klein, E.Klempt, A.Kozela, R.Lawall, Z.Li, J.Link, T.Mart, D.Menze, W.Neuerburg, M.Paganetti, E.Paul, H.van Pee, R.Plotzke, M.Schumacher, W.J.Schwille, F.Smend, J.Smyrski, H.-N.Tran, M.Q.Tran, F.Wehnes, B.Wiegers, F.W.Wieland, J.Wisskirchen

K0+ Photoproduction with SAPHIR

NUCLEAR REACTIONS 1H(γ, K0), E=1.0-1.6 GeV; measured hyperon production σ(θ), σ. Model comparisons.

doi: 10.1016/S0375-9474(98)00275-9
Citations: PlumX Metrics


1998ER03      Nucl.Phys. A639, 213c (1998)

J.Ernst, H.Jungst, H.Kalinowsky, E.Klempt, J.Link, H.van Pee, R.Plotzke, J.Barth, W.Braun, R.Burgwinkel, K.H.Glander, S.Goers, J.Hannappel, N.Jopen, U.Kirch, F.Klein, F.-J.Klein, R.Lawall, D.Menze, W.Neuerburg, M.Paganetti, E.Paul, W.-J.Schwille, M.Q.Tran, F.Wehnes, B.Wiegers, F.W.Wieland, J.Wisskirchen, M.Schumacher, F.Smend, H.-N.Tran, A.Kozela, J.Smyrski, C.Bennhold

First Results of η' Photoproduction with SAPHIR

NUCLEAR REACTIONS 1H(γ, X), E=1.5-2.5 GeV; measured preliminary η' production σ.

doi: 10.1016/S0375-9474(98)00276-0
Citations: PlumX Metrics


1998KR13      Phys.Lett. 432B, 45 (1998)

A.Kraus, O.Selke, F.Wissmann, J.Ahrens, H.-J.Arends, R.Beck, G.Galler, M.-Th.Hutt, B.Korfgen, J.Peise, M.Schumacher, F.Smend, R.Wichmann

Angular and Polarization Dependence of Compton Scattering from 4He in the Δ-Resonance Region

NUCLEAR REACTIONS 4He(polarized γ, γ'), E=150-500 MeV; measured σ(Eγ, θ), asymmetry; deduced Δ-hole model failure at large scattering angles. Polarized tagged photons.

doi: 10.1016/S0370-2693(98)00635-2
Citations: PlumX Metrics


1998RA12      Phys.Rev. C58, 489 (1998)

F.Rambo, J.Ahrens, H.-J.Arends, R.Beck, G.Galler, J.D.Kellie, H.-P.Krahn, A.Kraus, U.Ludwig, J.Peise, A.Schmidt, M.Schumacher, F.Smend, F.Wissmann, S.Wolf

Enhancement of the Linear Polarization of Coherent Bremsstrahlung by Collimation of the Photon Beam

NUCLEAR REACTIONS 4He(polarized γ, π0), E=200-400 MeV bremsstrahlung; analyzed asymmetry; deduced beam polarization, collimation effect. Coherent bremsstrahlung from diamond crystals.

doi: 10.1103/PhysRevC.58.489
Citations: PlumX Metrics


1998SC06      Nucl.Phys. A629, 334c (1998)

M.Schumacher

Studies on the Structure of the Free and Bound Nucleon using the Real-Photon Facilities at MAX (Lund), MAMI (Mainz) and ELSA (Bonn)

doi: 10.1016/S0375-9474(97)00707-0
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1998TR06      Phys.Lett. 445B, 20 (1998)

M.Q.Tran, J.Barth, C.Bennhold, M.Bockhorst, W.Braun, A.Budzanowski, G.Burbach, R.Burgwinkel, J.Ernst, K.H.Glander, S.Goers, B.Guse, K.-M.Haas, J.Hannappel, K.Heinloth, K.Honscheid, T.Jahnen, N.Jopen, H.Jungst, H.Kalinowsky, U.Kirch, F.J.Klein, F.Klein, E.Klempt, D.Kostrewa, A.Kozela, R.Lawall, L.Lindemann, J.Link, J.Manns, T.Mart, D.Menze, H.Merkel, R.Merkel, W.Neuerburg, M.Paganetti, E.Paul, R.Plotzke, U.Schenk, J.Scholmann, I.Schulday, M.Schumacher, P.Schutz, W.J.Schwille, F.Smend, J.Smyrski, W.Speth, H.N.Tran, H.van Pee, W.Vogel, R.Wedemeyer, F.Wehnes, B.Wiegers, F.W.Wieland, J.Wisskirchen, A.Wolf, and the SAPHIR Collaboration

Measurement of γp → K+ Λ and γp → K+Σ0 at Photon Energies up to 2 GeV

NUCLEAR REACTIONS 1H(γ, K+X), E=0.8-2 GeV; measured Λ, Σ0 hyperon production σ(θ), σ, polarizations. Tagged photons.

doi: 10.1016/S0370-2693(98)01393-8
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1998WI06      Eur.Phys.J. A 1, 193 (1998)

F.Wissmann, M.I.Levchuk, M.Schumacher

On Approaches to Measure the Electromagnetic Polarizabilities of the Neutron

NUCLEAR REACTIONS 2H(γ, nγ'), E=150-300 MeV; calculated σ(En, θ); deduced neutron polarizability contributions.

doi: 10.1007/s100500050048
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1997HO07      Phys.Rev.Lett. 78, 4697 (1997)

P.Hoffmann-Rothe, M.Krebeck, J.Hey, M.Breuer, G.von Edel, E.Hourany, M.Rigney, J.Ajaka, G.Anton, J.Arends, G.Berrier-Ronsin, W.Beulertz, G.Blanpied, A.Bock, J.-P.Didelez, K.Helbing, R.Maass, G.Noldeke, B.Preedom, B.Richie, L.Rosier, B.Saghai, M.Schumacher, F.Smend

Break-Up and Coherent Photoproduction of η Mesons on the Deuteron

NUCLEAR REACTIONS 2H(γ, X), E ≈ 0.710-0.8 GeV bremsstrahlung; measured σ(θ(η)), coherent production; deduced neutron to proton differential σ, isoscalar, isovector amplitude ratio.

doi: 10.1103/PhysRevLett.78.4697
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1997HU05      Nucl.Phys. A618, 483 (1997)

M.-Th.Hutt, A.I.Milstein, M.Schumacher

Model for Analytical Calculation of Nuclear Photoabsorption at Intermediate Energies

NUCLEAR REACTIONS 12C, 208Pb(γ, X), E ≈ 50-400 MeV; analyzed photoabsorption σ/A vs E. 4He(γ, X), E ≈ 150-500 MeV; analyzed photoabsorption σ(θ) vs E. Fermi gas model of nuclear matter.

doi: 10.1016/S0375-9474(97)00063-8
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1997HU08      Nucl.Phys. A620, 385 (1997)

A.Hunger, J.Peise, A.Robbiano, J.Ahrens, I.Anthony, H.-J.Arends, R.Beck, G.P.Capitani, B.Dolbilkin, H.Falkenberg, G.Galler, S.J.Hall, J.D.Kellie, R.Kondratev, R.Kordsmeier, V.Lisin, A.I.L'vov, G.J.Miller, C.Molinari, P.Ottonello, A.R.Reolon, M.Sanzone, M.Schmitz, M.Schneider, M.Schumacher, O.Selke, Th.Walcher, F.Wissmann, S.Wolf, A.Zucchiatti

Compton Scattering by the Proton Through θ(cms) = 75° and 90° in the Δ-Resonance Region

NUCLEAR REACTIONS 1H(γ, γ), E=200-500 MeV; measured Compton scattering σ(θ); deduced multipole distribution. Dispersion relations. Δ-resonance.

doi: 10.1016/S0375-9474(97)00184-X
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1997KR13      Phys.Rev.Lett. 79, 3834 (1997)

A.Kraus, O.Selke, F.Rambo, G.Galler, M.Schumacher, F.Smend, R.Wichmann, S.Wolf, J.Ahrens, H.-J.Arends, R.Beck, J.Peise

Beam Asymmetry of Coherent π0 Photoproduction on 4He in the Δ(1232) Range Measured using Coherent Bremsstrahlung

NUCLEAR REACTIONS 4He(polarized γ, π0), E=200-500 MeV bremsstrahlung; measured π0 photoproduction σ(θ) beam asymmetry; deduced beam polarization, collimation effect.

doi: 10.1103/PhysRevLett.79.3834
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1997LV01      Phys.Rev. C55, 359 (1997)

A.I.Lvov, V.A.Petrunkin, M.Schumacher

Dispersion Theory of Proton Compton Scattering in the First and Second Resonance Regions

NUCLEAR REACTIONS 1H(γ, γ), E ≤ 1.2 GeV; calculated σ(θ) vs E. 1H(polarized γ, γ), E=750 MeV; calculated beam asymmetry vs θ. 1H(polarized γ, γ), E ≤ 1 GeV; calculated proton polarization. Compton scattering, dispersion theory.

doi: 10.1103/PhysRevC.55.359
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1996HU12      Nucl.Instrum.Methods Phys.Res. A372, 135 (1996)

A.Hunger, R.Kordsmeier, M.Schumacher, O.Selke, J.Ahrens, J.Peise, M.Schmitz, M.Schneider, F.Wissmann, B.Dolbilkin, R.Kondratev, V.Lisin, A.Polonsky

A High Angular-Resolution and Time-of-Flight Detector System for Recoil Protons from the Reactions p(γ, γ)p and p(γ, π0)p

NUCLEAR REACTIONS 1H(γ, γ), (γ, π0), E ≤ 350 MeV; measured proton trajectories, π0 photoproduction scatter plots; deduced Compton scattering, π0 background separation related features. High angular resolution recoil proton tof detector.

doi: 10.1016/0168-9002(95)01280-X
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1996LE18      Z.Phys. A355, 317 (1996)

M.I.Levchuk, V.A.Petrunkin, M.Schumacher

π0 Photoproduction on Quasi-Free Neutrons in the Reaction γd → π0np in the Δ Region

NUCLEAR REACTIONS 2H(polarized γ, nπ0), (γ, nπ0), E=250-400 MeV; calculated σ(En, θn, θ(π)), asymmetry; deduced 1n(γ, π0n) reaction mechanism. Diagrammatic approach.

doi: 10.1007/s002180050114
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1996MO04      Phys.Lett. 371B, 181 (1996)

C.Molinari, P.Ottonello, A.Robbiano, M.Sanzone, A.Zucchiatti, G.P.Capitani, A.R.Reolon, H.Falkenberg, A.Hunger, R.Kordsmeier, M.Schumacher, J.Ahrens, H.J.Arends, R.Beck, J.Peise, F.Wissmann, B.Dolbilkin, R.Kondratev, V.Lisin, I.Anthony, J.D.Kellie, S.J.Hall, G.J.Miller

Scattering of Photons by the Proton Through θ(cms) = 90° in the Δ-Resonance Region

NUCLEAR REACTIONS 1H(γ, γ), E=250-500 MeV; measured σ(θγ), recoil proton spectra. Dispersion theories comparison.

doi: 10.1016/0370-2693(96)00020-2
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1996PE19      Phys.Lett. 384B, 37 (1996)

J.Peise, A.Hunger, J.Ahrens, I.Anthony, H.-J.Arends, R.Beck, G.P.Capitani, B.Dolbilkin, H.Falkenberg, S.J.Hall, P.Jennewein, J.D.Kellie, R.Kondratev, R.Kordsmeier, V.Lisin, A.I.Lvov, G.J.Miller, C.Molinari, A.R.Reolon, A.Robbiano, M.Sanzone, M.Schmitz, M.Schneider, M.Schumacher, O.Selke, Th.Walcher, F.Wissmann

Compton Scattering by the Proton Through θ(cms) = 75° in the Δ-Resonance Region

NUCLEAR REACTIONS 1H(γ, γ), E=200-410 MeV; measured Compton scattering σ(θ); deduced Δ-photo excitation reduced M1 strength.

doi: 10.1016/0370-2693(96)00709-5
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1996SE02      Phys.Lett. 369B, 207 (1996)

O.Selke, A.Hunger, A.Kraus, M.Schumacher, R.Wichmann, J.Ahrens, H.J.Arends, R.Beck, J.Peise, M.Schneider, F.Wissmann

Compton Scattering from 4He in the Δ(1232) Resonance Region

NUCLEAR REACTIONS 4He(γ, γ), E=120-510 MeV; measured Compton scattering σ(θ). Schematic model analysis.

doi: 10.1016/0370-2693(95)01580-9
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1996WI10      Z.Phys. A355, 169 (1996)

R.Wichmann, J.Ahrens, H.J.Arends, R.Beck, G.Galler, A.Hunger, A.Kraus, I.J.D.MacGregor, J.Peise, B.Seitz, M.Schmitz, M.Schneider, O.Selke, M.Schumacher, F.Wissmann

Photoemission of Protons from 4He in the Δ-Resonance Region

NUCLEAR REACTIONS 4He(γ, p), E=130-525 MeV; measured proton spectra; deduced three separate reaction channels.

doi: 10.1007/s002180050095
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1995FU07      Nucl.Phys. A591, 1 (1995)

K.Fuhrberg, D.Hager, T.Glebe, B.-E.Andersson, K.Hansen, M.Hutt, B.Nilsson, L.Nilsson, D.Ryckbosch, B.Schroder, M.Schumacher, R.Van de Vyver

Compton Scattering of 87 MeV Photons by 4He

NUCLEAR REACTIONS 4He(γ, γ), E=87 MeV; measured σ(θ); deduced bound nucleon electromagnetic polarizabilities.

doi: 10.1016/0375-9474(95)00177-3
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1995HA23      Nucl.Phys. A595, 287 (1995)

D.Hager, K.Fuhrberg, T.Glebe, M.Hutt, M.Ludwig, M.Schumacher, B.E.Andersson, K.Hansen, B.Nilsson, B.Schroder, L.Nilsson, H.Freiesleben, E.Kuhlmann

Elastic Scattering of 58 and 75 MeV Photons by 12C and 16O and Electromagnetic Polarizabilities of the Bound Nucleon

NUCLEAR REACTIONS 16O, 12C(γ, γ), E=58, 75 MeV; measured σ(θ); deduced bound nucleon electromagnetic polarizabilities. Tagged photon beam.

doi: 10.1016/0375-9474(95)00379-4
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1994FR03      Nucl.Phys. A567, 266 (1994)

H.Friedrichs, D.Hager, P.von Brentano, R.D.Heil, R.-D.Herzberg, U.Kneissl, J.Margraf, G.Muller, H.H.Pitz, B.Schlitt, M.Schumacher, C.Wesselborg, A.Zilges

Low-Lying E1 and M1 Strengths in the Deformed Nucleus 160Gd

NUCLEAR REACTIONS 160Gd(γ, γ'), E=3.7 MeV bremsstrahlung; measured Eγ, Iγ, linear polarization, asymmetry. 160Gd deduced levels, J, π, K, Γ0, (Γ0)2/Γ, B(λ). Enriched target.

doi: 10.1016/0375-9474(94)90148-1
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1994LO19      Nucl.Instrum.Methods Phys.Res. A343, 494 (1994)

D.Lohmann, J.Peise, J.Ahrens, I.Anthony, H.-J.Arends, R.Beck, R.Crawford, A.Hunger, K.H.Kaiser, J.D.Kellie, Ch.Klumper, P.Krahn, A.Kraus, U.Ludwig, M.Schumacher, O.Selke, M.Schmitz, M.Schneider, F.Wissmann, S.Wolf

Linearly Polarized Photons at MAMI (Mainz)

doi: 10.1016/0168-9002(94)90230-5
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1994SC29      Nucl.Phys. A576, 603 (1994)

M.Schumacher, A.I.Milstein, H.Falkenberg, K.Fuhrberg, T.Glebe, D.Hager, M.Hutt

The Enhancement of Giant-Dipole Strength and Its Consequences for the Effective Mass of the Nucleon and the Electromagnetic Polarizabilities and Quadrupole Sum-Rule of the Nucleus

NUCLEAR REACTIONS 208Pb(γ, X), E ≤ 40 MeV; calculated photoabsorption σ(E); deduced mesonic currents, isovector vibrations induced enhancement effects. Compton scattering (below pion threshold) data input.

doi: 10.1016/0375-9474(94)90746-3
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1994WI13      Phys.Lett. 335B, 119 (1994)

F.Wissmann, J.Peise, M.Schmitz, M.Schneider, J.Ahrens, I.Anthony, R.Beck, B.Dolbilkin, S.J.Hall, F.Harter, S.Herdade, J.Herrmann, A.Hunger, P.Jennewein, J.D.Kellie, R.Kondratev, H.-P.Krahn, K.-H.Krause, V.Kusnetzov, V.Lisin, G.J.Miller, A.Polonsky, M.Schumacher, J.Sobolewski, Th.Walcher, A.Zabrodin

Elastic and Inelastic Photon Scattering from 12C

NUCLEAR REACTIONS 12C(γ, γ), (γ, γ'), E=200-500 MeV; measured σ(θ) vs Eγ. Simple static ansatz, Δ-hole models comparison.

doi: 10.1016/0370-2693(94)91401-X
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1993FR06      Nucl.Phys. A553, 553c (1993)

H.Friedrichs, S.Lindenstruth, B.Schlitt, C.Wesselborg, I.Bauske, R.D.Heil, U.Kneissl, J.Margraf, H.H.Pitz, D.Hager, G.Muller, M.Schumacher, P.von Brentano, R.D.Herzberg, A.Zilges

Identification of Strong E1 and M1 Groundstate Transitions in Deformed Rare Earth Nuclei

NUCLEAR REACTIONS 160Gd, 162Dy(γ, γ'), E=4.3 MeV bremsstrahlung; measured γ asymmetry. 150Nd, 160Gd, 162Dy deduced transition γ-multipolarity, B(λ), levels, widths.

doi: 10.1016/0375-9474(93)90658-K
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1992BA05      Nucl.Phys. A536, 87 (1992)

A.Baumann, P.Rullhusen, K.W.Rose, M.Ludwig, M.Schumacher, A.I.Milstein, J.M.Henneberg, N.Wieloch-Laufenberg, B.Ziegler

Delbruck Scattering of 30-100 MeV Photons by Pb through Angles of 15°-30°

NUCLEAR REACTIONS Pb(γ, γ), E=30-100 MeV; measured coherent scattering σ(θ). Comparison with different predictions for Delbruck scattering including the large-angle high-energy approximation. Natural target.

doi: 10.1016/0375-9474(92)90247-H
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1992FR02      Phys.Rev. C45, R892 (1992)

H.Friedrichs, B.Schlitt, J.Margraf, S.Lindenstruth, C.Wesselborg, R.D.Heil, H.H.Pitz, U.Kneissl, P.von Brentano, R.D.Herzberg, A.Zilges, D.Hager, G.Muller, M.Schumacher

Evidence for Enhanced Electric Dipole Excitations in Deformed Rare Earth Nuclei Near 2.5 MeV

NUCLEAR REACTIONS 150Nd, 162Dy(γ, γ'), E ≤ 2.8 MeV bremsstrahlung; measured Eγ, Iγ, asymmetry, linear polarization. 150Nd, 162Dy deduced levels, J, π, Γ0, (Γ0)2/Γ, K-quantum number, B(λ).

doi: 10.1103/PhysRevC.45.R892
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1992FU06      Nucl.Phys. A548, 579 (1992)

K.Fuhrberg, G.Martin, D.Hager, M.Ludwig, M.Schumacher, B.-E.Andersson, K.I.Blomqvist, H.Ruijter, A.Sandell, B.Schroder, E.Hayward, L.Nilsson, R.Zorro

Compton Scattering by Mesons in Nuclei: Experiment on 208Pb

NUCLEAR REACTIONS 208Pb(γ, γ), E=58, 73 MeV; measured σ(θ) for elastic photon scattering, θ from 60° to 150°. Predicted exchange seagull amplitudes are compared with experimental data, Compton scattering by mesons in nuclei.

doi: 10.1016/0375-9474(92)90643-X
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1992LU01      Phys.Lett. 274B, 275 (1992)

M.Ludwig, B.-E.Andersson, A.Baumann, K.I.Blomqvist, K.Fuhrberg, E.Hayward, G.Miller, D.Nilsson, A.Sandell, B.Schroder, M.Schumacher

Electromagnetic Polarizabilities of Nucleons Bound in 12C and 16O

NUCLEAR REACTIONS 12C, 16O(γ, γ), E=61, 77 MeV; measured σ(θ), Compton scattering; deduced bound nucleon electromagnetic polarizabilities.

doi: 10.1016/0370-2693(92)91986-J
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1991BA36      Nucl.Phys. A530, 267 (1991)

N.Baron, G.Baur, M.Schumacher

Nuclear Photon Scattering Below and Above the Giant Resonances

NUCLEAR REACTIONS 208Pb(γ, γ), E ≤ 50 MeV; calculated σ(θ) vs E, Compton scattering. 208Pb(γ, X), E=20-140 MeV; calculated photoabsorption σ(E). Microscopic operator based matrix elements.

doi: 10.1016/0375-9474(91)90803-E
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1991MO17      Nucl.Phys. A531, 237 (1991)

G.Mondry, F.Wissmann, G.Muller, F.Schroder, P.Rullhusen, F.Smend, M.Schumacher, P.Fettweis, R.Carchon

Rotational Raman Scattering in 127I

NUCLEAR REACTIONS 181Ta, 127I(γ, γ), (γ, γ'), E=11.4 MeV; measured elastic, Raman scattering σ(θ). Natural targets.

doi: 10.1016/0375-9474(91)90611-9
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1991SC13      Nucl.Phys. A528, 189 (1991)

K.P.Schelhaas, J.M.Henneberg, N.Wieloch-Laufenberg, U.Zurmuhl, B.Ziegler, M.Schumacher, F.Wolf

Nuclear Photon Scattering by Si

NUCLEAR REACTIONS 28Si(γ, γ), (γ, γ'), E=15-140 MeV; measured σ(E, θ). 28Si deduced E1, E2 resonance parameters, radius parameters.

doi: 10.1016/0375-9474(91)90423-4
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1990HE03      Nucl.Phys. A506, 223 (1990)

R.D.Heil, B.Kasten, W.Scharfe, P.A.Butler, H.Friedrichs, S.D.Hoblit, U.Kneissl, S.Lindenstruth, M.Ludwig, G.Muller, H.H.Pitz, K.W.Rose, M.Schumacher, U.Seemann, J.Simpson, P.von Brentano, Th.Weber, C.Wesselborg, A.Zilges

Parity Assignments in Nuclear Resonance Fluorescence Experiments Using Compton Polarimeters

NUCLEAR REACTIONS 142,150Nd, 232Th(γ, γ'), E=4.1 MeV bremsstrahlung; measured Eγ, Iγ, asymmetry, linear polarization. 142,150Nd, 232Th deduced levels, J, π, Γ0, (Γ0)20.

doi: 10.1016/0375-9474(90)90384-X
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1990MI21      Phys.Lett. 247B, 481 (1990)

A.I.Milstein, P.Rullhusen, M.Schumacher

High-Energy Delbruck Scattering from a Heavy Nucleus at Large Angles

NUCLEAR REACTIONS Pb(γ, γ), E ≈ 20-100 MeV; calculated σ(θ).

doi: 10.1016/0370-2693(90)91888-I
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1990RO05      Phys.Lett. 234B, 460 (1990)

K.W.Rose, B.Zurmuhl, P.Rullhusen, M.Ludwig, A.Baumann, M.Schumacher, J.Ahrens, A.Zieger, D.Christmann, B.Ziegler, B.Schoch

Polarizability of the Neutron

NUCLEAR REACTIONS 2H(γ, γ'n), E=80-130 MeV; measured σ(θn), θγ=135°; deduced bremsstrahlung weighted σ(θn, En, θγ'), neutron polarizability.

doi: 10.1016/0370-2693(90)92039-L
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1990RO11      Nucl.Phys. A514, 621 (1990)

K.W.Rose, B.Zurmuhl, P.Rullhusen, M.Ludwig, A.Baumann, M.Schumacher, J.Ahrens, A.Zieger, D.Christmann, B.Ziegler

Quasi-Free Compton Scattering by the Neutron

NUCLEAR REACTIONS 2H(γ, γ'), E=130 MeV bremsstrahlung; measured nγ-coin; deduced σ(θγ, θn) for quasifree Compton scattering by the neutron following breakup. 1n deduced electromagnetic polarizability.

doi: 10.1016/0375-9474(90)90014-D
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1990SC02      Nucl.Phys. A506, 307 (1990)

K.P.Schelhaas, J.M.Henneberg, N.Wieloch-Laufenberg, U.Zurmuhl, B.Ziegler, M.Schumacher, F.Wolf

Nuclear Photon Scattering by 12C

NUCLEAR REACTIONS 12C(γ, γ), (γ, γ'), E=15-140 MeV; measured σ(E, θ). 12C deduced E1, E2 resonance parameters, radius parameters, polarizability of bound nucleons.

doi: 10.1016/0375-9474(90)90389-4
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1989FU04      Europhys.Lett. 9, 427 (1989)

K.Fuhrberg, G.Mondry, D.Nowotny, H.-J.Brinkmann, M.Ludwig, G.Muller, W.Scharfe, M.Schumacher

Concentration of Isovector Giant-Quadrupole Strength in 208Pb Near 17.7 MeV

NUCLEAR REACTIONS Pb(γ, γ), E=17.64 MeV; measured σ(θ); deduced E1-E2 interference. 208Pb deduced possible 2+ level.

doi: 10.1209/0295-5075/9/5/004
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1989FU09      Phys.Rev. C40, 2394 (1989)

K.Fuhrberg, R.Nolte, A.Baumann, P.Rullhusen, M.Schumacher

Meson Exchange Currents in 209Bi

NUCLEAR REACTIONS 209Bi(γ, γ), E ≤ 20 MeV; calculated σ(θ) vs E. 209Bi(γ, X), E < 17.5 MeV; calculated photoabsorption σ(E). 209Bi deduced GDR enhancement factor.

doi: 10.1103/PhysRevC.40.2394
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1989KA16      Phys.Rev.Lett. 63, 609 (1989); Erratum Phys.Rev.Lett. 63, 2695 (1989)

B.Kasten, R.D.Heil, P.v.Brentano, P.A.Butler, S.D.Hoblit, U.Kneissl, S.Lindenstruth, G.Muller, H.H.Pitz, K.W.Rose, W.Scharfe, M.Schumacher, U.Seemann, Th.Weber, C.Wesselborg, A.Zilges

Evidence for a Cluster of Collective 1+ States in 150Nd Near 3 MeV

NUCLEAR REACTIONS 150Nd(γ, γ'), E=2.8-3.1 MeV bremsstrahlung; measured Eγ, Iγ, γ linear polarization, asymmetry. 150Nd deduced levels, J, π, B(λ), (Γ02/Γ). Compton polarimeters.

doi: 10.1103/PhysRevLett.63.609
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1989NO03      Phys.Rev. C40, 1175 (1989)

R.Nolte, F.Schroder, A.Baumann, K.W.Rose, K.Fuhrberg, M.Schumacher, P.Fettweis, R.Carchon

Nuclear-Structure Dependence of the E1 Strength Located in the Giant Dipole Resonance of Heavy Nuclei

NUCLEAR REACTIONS 181Ta, 203,205Tl, 209Bi, 238U(γ, γ), E=8-18 MeV; measured σ(θ). 181Ta, 203,205Tl, 209Bi, 238U deduced E1 strength enhancement factor near GDR.

doi: 10.1103/PhysRevC.40.1175
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1988AH04      Nucl.Phys. A490, 655 (1988)

J.Ahrens, H.Gimm, T.Beuermann, P.Rullhusen, M.Schumacher, B.Fricke, W.D.Sepp

Molecular Effects on the Cross Section for Pair Production and Their Importance in the Evaluation of the Total Photonuclear Cross Section of 16O in the Δ-Resonance Region

NUCLEAR REACTIONS 16O(γ, X), E=90-400 MeV; measured total absorption σ; calculated pair-production σ(pp) on the oxygen molecule.

doi: 10.1016/0375-9474(88)90019-X
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1988BA56      Phys.Rev. C38, 1940 (1988)

A.Baumann, P.Rullhusen, K.W.Rose, M.Schumacher, J.M.Henneberg, N.Wieloch-Laufenberg, B.Ziegler

Feasibility of Measurement of the Electromagnetic Polarizability of the Bound Nucleon

NUCLEAR REACTIONS 208Pb(γ, γ), E=25-100 MeV; measured σ(θ), Compton scattering; deduced bound nucleon polarizability.

doi: 10.1103/PhysRevC.38.1940
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1988SC16      Nucl.Phys. A489, 189 (1988)

K.P.Schelhaas, J.M.Henneberg, M.Sanzone-Arenhovel, N.Wieloch-Laufenberg, U.Zurmuhl, B.Ziegler, M.Schumacher, F.Wolf

Nuclear Photon Scattering by 208Pb

NUCLEAR REACTIONS 208Pb(γ, γ'), E=10-100 MeV; measured σ(θ) vs E. 208Pb deduced giant resonance parameters. Monochromatic beam.

doi: 10.1016/0375-9474(88)90149-2
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1986KA13      Phys.Rev. C33, 1606 (1986)

B.Kasten, D.Schaupp, P.Rullhusen, F.Smend, M.Schumacher, L.Kissel

Coulomb Correction Effect in Delbruck Scattering and Atomic Rayleigh Scattering of 1-4 MeV Photons

NUCLEAR REACTIONS Sn, Ce, Ta, Pb, U(γ, γ), E=0.8-4 MeV; measured Delbruck scattering σ(θ); deduced Coulomb correction effect.

doi: 10.1103/PhysRevC.33.1606
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1986NO06      Phys.Lett. 173B, 288 (1986)

R.Nolte, A.Baumann, K.W.Rose, M.Schumacher

Effect of Exchange Currents in E1 Sum Rule and Orbital g-Factor in 209Bi

NUCLEAR REACTIONS 209Bi(γ, γ), E=16.5-18 MeV; measured Eγ, Iγ, γ(θ). 209Bi deduced GDR enhancement factor, meson magnetic moment connection.


1985SC10      Nucl.Phys. A438, 493 (1985)

M.Schumacher, U.Zurmuhl, F.Smend, R.Nolte

Low-Energy Electric-Dipole Transition Widths Predicted by the Giant Dipole Resonance and Statistical Models

NUCLEAR STRUCTURE A=6-20; A=21-44; calculated electric transition hindrance factors. GDR, statistical models.

doi: 10.1016/0375-9474(85)90388-4
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1985WE01      Z.Phys. A320, 179 (1985)

R.Wenskus, A.Baumann, P.Rullhusen, D.Schaupp, F.Smend, M.Schumacher

Relativistic Double Differential Cross Sections for Compton Scattering by Bound Electrons: Test at low photon energies and predictions at intermediate photon energies

ATOMIC PHYSICS Cu, Pb(γ, γ'), E=0.662, 50 MeV; C(γ, γ'), E=50 MeV; calculated Compton σ(θ, Eγ'). Relativistic impulse approximation.

doi: 10.1007/BF01881265
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1984SC32      Z.Phys. A319, 1 (1984)

D.Schaupp, H.Czerwinski, F.Smend, R.Wenskus, M.Schumacher, A.H.Millhouse, H.Schenk-Strauss

Resonant Raman Scattering of Synchrotron X-Rays by Neodymium: Observation of fine structure in K-L-RRS and of K-N-RRS

ATOMIC PHYSICS Nd(γ, γ), E=43.01-43.35 keV; measured resonant Raman scattering σ(θ, Eγ').

doi: 10.1007/BF01429760
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1983KE02      Z.Phys. A311, 253 (1983)

G.Kehlenbeck, J.Ahlert, F.Wolf, L.Ziegeler, F.Smend, M.Schumacher

Electronic Rearrangement on Molecules accompanying β-Decay Investigated by Nuclear Resonance Fluorescence

RADIOACTIVITY 60Co(β-); measured electron-neutrino pair recoil momentum distribution transferred to 60Ni; deduced molecular electronic rearrangement effects. Nuclear resonance fluoresence coincidence method, gaseous 60CoI2 sources.

doi: 10.1007/BF01415678
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1983RU03      Phys.Rev. C27, 559 (1983)

P.Rullhusen, U.Zurmuhl, F.Smend, M.Schumacher, H.G.Borner, S.A.Kerr

Giant Dipole Resonances and Coulomb Correction Effect in Delbruck Scattering Studied by Elastic and Raman Scattering of 8.5 to 11.4 MeV Photons

NUCLEAR REACTIONS 238U, 232Th, 209Bi(γ, γ), (γ, γ'), E=8.5-11.4 MeV; measured σ(θ) for elastic, Raman scattering; deduced Delbruck scattering Coulomb correction. 238U, 232Th, 209Bi deduced GDR parameters.

doi: 10.1103/PhysRevC.27.559
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1983ZU04      Z.Phys. A314, 171 (1983)

U.Zurmuhl, P.Rullhusen, F.Smend, M.Schumacher, H.G.Borner, S.A.Kerr

Nuclear Resonance Scattering Studies on 238U using a Dense Series of γ-Ray Photons

NUCLEAR REACTIONS 238U(γ, γ), (γ, γ'), E=4-7 MeV; measured Eγ, Iγ, σ(θγ). 238U deduced GDR, nonstatistical resonance strengths, Γ. Photon beam from 181Ta, 141Pr(n, γ), nuclear resonance fluorescence.


1982RU03      Nucl.Phys. A382, 79 (1982)

P.Rullhusen, U.Zurmuhl, W.Muckenheim, F.Smend, M.Schumacher, H.G.Borner

Coulomb Correction Effect in Delbruck Scattering and Nuclear Resonance Fluorescence of 2 to 10 MeV Photons on 238U

NUCLEAR REACTIONS 238U(γ, γ), (γ, γ'), E=2.75-9.72 MeV; measured Eγ, Iγ, σ(θ), elastic scattering, nuclear resonance fluorescence. 238U deduced levels, γ-branching.

doi: 10.1016/0375-9474(82)90442-0
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1982ZU01      Phys.Lett. 114B, 99 (1982)

U.Zurmuhl, P.Rullhusen, F.Smend, M.Schumacher, H.G.Borner

The Distribution of E1 Strength below Particle Threshold Studied by Resonant Scattering of Gamma Rays

NUCLEAR REACTIONS 238U(γ, γ), E=2.75-6.5 MeV; measured σ(θ), total σ(absorption) vs E; 181Ta(γ, γ), E=3-6.75 MeV; 165Ho(γ, γ), E=3.5-6.75 MeV; measured total σ(absorption) vs E. 238U, 181Ta, 165Ho deduced average γ-branching ratio, E1 transition strength distribution, nonstatistical deviations from GDR Lorentzian. Nuclear resonance fluorescence.

doi: 10.1016/0370-2693(82)90123-X
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1981AH02      Z.Phys. A301, 75 (1981)

J.Ahlert, M.Schumacher

A Precise B(E2) for the First 2+ State in 52Cr

NUCLEAR REACTIONS 52Cr(γ, γ'), E=1.431 MeV; measured Eγ, Iγ for Fe, Cr absorbers. 52Cr level deduced B(E2). Nuclear resonance fluorescence self-absorption technique, 52Mn gaseous source, NaI detector.

doi: 10.1007/BF01412466
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1981EN03      Z.Phys. A302, 61 (1981)

G.Endres, H.Langhoff, W.Muckenheim, F.Wolf, P.Rullhusen, F.Smend, M.Schumacher

Resonance Fluorescence in 121Sb

NUCLEAR REACTIONS 121Sb(γ, γ), E=3.452 MeV; measured σ vs source velocity. 121Sb level deduced T1/2, J, π, γ-branching. 56Fe level deduced T1/2. Nuclear resonance fluorescence technique, Doppler shift analysis, 56Co source, high speed centrifuge.

doi: 10.1007/BF01425103
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1981MU05      Z.Phys. A300, 43 (1981)

W.Muckenheim, P.Rullhusen, F.Smend, M.Schumacher, G.Endres, H.Langhoff

Nuclear Resonance Fluorescence in 238U and a New Approach to Doppler-Shift-Attenuation using High Speed Rotation

NUCLEAR REACTIONS 238U(γ, γ'), E=resonance; measured Eγ, Iγ, γγ(θ), σ(θγ), resonance fluorescence yield. 238U deduced levels, J, π, γ-branching, T1/2, Γ. Cobalt-56 source.

RADIOACTIVITY 56Co; measured Doppler shift attenuation of emission line. 56Fe level deduced T1/2. High speed centrifuge.


1981RU03      Phys.Rev. C23, 1375 (1981)

P.Rullhusen, W.Muckenheim, F.Smend, M.Schumacher, G.P.A.Berg, K.Mork, L.Kissel

Test of Vacuum Polarization by Precise Investigation of Delbruck Scattering

NUCLEAR REACTIONS Zn, Mo, Sn, Ce(γ, γ), E=2.754 MeV; measured σ(θ); deduced vacuum polarization effects. Delbruck scattering, Dirac-Hartree-Fock-Slater wave functions, second-order S-matrix.

doi: 10.1103/PhysRevC.23.1375
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1981SC10      Z.Phys. A300, 193 (1981)

M.Schumacher, F.Smend, W.Muckenheim, P.Rullhusen, H.G.Borner

Nuclear Photoexcitation and Delbruck Scattering Studied in the Energy Range 2-8 MeV

NUCLEAR REACTIONS 238U, 209Bi, Pb, Tl, Hg, W, 181Ta, Nd, Ce, 127I, Sb, Sn, Cd, Nd(γ, γ), E=2.599-3.452; 238U, 209Bi, Pb, Tl, Hg, W, 181Ta, 165Ho, Ce, Sn, Mo, Zn(γ, γ), E=6.418-7.16 MeV; measured Eγ, Iγ, σ(θ). 203Tl, 100,94Mo, 186,184W, 181Ta levels deduced photoexcitation, decay mechanism. Lorentzian GDR shape, Rayleigh, Thomson, Delbruck, collective nuclear excitation effects.

doi: 10.1007/BF01412295
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1980MU05      Phys.Lett. 92B, 71 (1980)

W.Muckenheim, P.Rullhusen, F.Smend, M.Schumacher

Evidence for Nuclear Photoexcitation Obtained in Low-Energy γ-Ray Scattering Experiments

NUCLEAR REACTIONS 238U, 208Pb, Nd, 121Sb, 209Bi, 181Ta, Ce, Sn(γ, γ), E=2.5-3.5 MeV; measured σ(E, θ). 238U, 181Ta, Nd, 121Sb levels deduced Γ, spacing. Nuclear resonance fluorescence.

doi: 10.1016/0370-2693(80)90306-8
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1980MU08      J.Phys.(London) G6, 1237 (1980)

W.Muckenheim, M.Schumacher

Delbruck and Rayleigh Scattering by Uranium Investigated at Photon Energies between 0.1-1.5 MeV

NUCLEAR REACTIONS U(γ, γ), E=0.1-1.5 MeV; measured σ(θ); deduced dispersive Delbruck scattering effects, small Coulomb corrections. Rayleigh, nuclear Thomson, nuclear resonance, Delbruck amplitudes, Dirac-Hartree-Fock-Slater wave functions.

doi: 10.1088/0305-4616/6/10/010
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1980MU11      Nucl.Instrum.Methods 173, 403 (1980)

W.Muckenheim, P.Rullhusen, F.Smend, M.Schumacher

Note on the Half-Life of 24Na

RADIOACTIVITY 24Na [from 27Al(d, pα)]; measured T1/2. Ge(Li) detector.


1980SC22      Nucl.Phys. A346, 418 (1980)

M.Schumacher, P.Rullhusen, F.Smend, W.Muckenheim, H.G.Borner

The Energy Dependence of Delbruck Scattering Investigated at Z = 73, 82 and 92

NUCLEAR REACTIONS 181Ta, 206,207,208Pb, 238U(γ, γ), E=0.279, 0.412, 0.662, 0.889, 1.121, 1.173, 1.332, 4.291, 4.767 MeV; measured σ(θ) Delbruck. Natural targets.

doi: 10.1016/0375-9474(80)90477-7
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetM0421.


1979RU01      Nucl.Phys. A313, 307 (1979)

P.Rullhusen, F.Smend, M.Schumacher

Delbruck Scattering of 2.754 MeV Photons by Bi and Th

NUCLEAR REACTIONS 209Bi, 232Th(γ, γ), E=2.745 MeV; measured σ(θ). Compared with Delbruck theory. Natural targets.

doi: 10.1016/0375-9474(79)90502-5
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1979RU03      Phys.Lett. 84B, 166 (1979)

P.Rullhusen, F.Smend, M.Schumacher

Delbruck Scattering of 2754 keV Photons by Nd, Ce, I, Sn, Mo and Zn

NUCLEAR REACTIONS Nd, Ce, I, Sn, Mo, Zn(γ, γ), E=2754 keV; calculated σ(θ); deduced validity of Delbruck theory.

doi: 10.1016/0370-2693(79)90274-0
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1979RU08      Z.Phys. A293, 287 (1979)

P.Rullhusen, F.Smend, M.Schumacher, A.Hanser, H.Rebel

Coulomb Correction to Delbruck Scattering Investigated at Z = 94

NUCLEAR REACTIONS 239Pu(γ, γ), E=2.754 MeV; measured σ(θ); deduced higher-order Coulomb correction terms. Delbruck, nuclear resonance scattering analysis.

doi: 10.1007/BF01435270
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1977SC20      Z.Phys. A282, 353 (1977)

M.Schumacher, P.Rullhusen

Nuclear Resonance Fluorescence in 94Mo, 95Mo and 96Mo

NUCLEAR REACTIONS 94,95,96Mo(γ, γ'); measured resonance fluorescence yields, σ. 95Mo levels deduced T1/2, δ, B(λ).

doi: 10.1007/BF01434288
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1977SC30      Phys.Lett. 71B, 276(1977)

M.Schumacher, P.Rullhusen

Delbruck Scattering of 2.75 MeV Photons by Uranium

NUCLEAR REACTIONS U(γ, γ), E=2.75; measured σ(θ).

doi: 10.1016/0370-2693(77)90214-3
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1976SC10      Phys.Rev. C13, 2318 (1976)

M.Schumacher, F.Smend, I.Borchert

Delbruck Scattering of 2.754-MeV Photons by Pb for Angles from 15° to 150°

NUCLEAR REACTIONS Pb(γ, γ), E=2.754 MeV; measured Delbruck scattering, σ(θ), θ=15°-150°.

doi: 10.1103/PhysRevC.13.2318
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