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NSR database version of March 2, 2024.

Search: Author = A.Richter

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2023FE08      Phys. Rev. Res. 5, L022044 (2023)

R.W.Fearick, P.von Neumann-Cosel, S.Bacca, J.Birkhan, F.Bonaiti, I.Brandherm, G.Hagen, H.Matsubara, W.Nazarewicz, N.Pietralla, V.Yu.Ponomarev, P.-G.Reinhard, X.Roca-Maza, A.Richter, A.Schwenk, J.Simonis, and A.Tamii

Electric dipole polarizability of 40Ca

NUCLEAR REACTIONS 40Ca(p, p'), E=5-25 MeV; measured reaction products, Ep, Ip; deduced electric dipole strength distribution, σ(θ, E). Comparison with available data. The Grand Raiden spectrometer, RCNP, Osaka.

doi: 10.1103/PhysRevResearch.5.L022044
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2023WA24      Eur.Phys.J. A 59, 154 (2023)

F.Wamers, C.Lehr, J.Marganiec-Galazka, F.Aksouh, Yu.Aksyutina, H.Alvarez-Pol, L.Atar, T.Aumann, S.Beceiro Novo, C.A.Bertulani, K.Boretzky, M.J.G.Borge, C.Caesar, M.Chartier, A.Chatillon, L.V.Chulkov, D.Cortina-Gil, P.Diaz Fernandez, H.Emling, O.Ershova, L.M.Fraile, H.O.U.Fynbo, D.Galaviz, H.Geissel, M.Heil, M.Holl, H.T.Johansson, B.Jonson, C.Karagiannis, O.A.Kiselev, J.V.Kratz, R.Kulessa, N.Kurz, C.Langer, M.Lantz, T.Le Bleis, R.Lemmon, Yu.A.Litvinov, K.Mahata, C.Muntz, T.Nilsson, C.Nociforo, W.Ott, V.Panin, S.Paschalis, A.Perea, R.Plag, R.Reifarth, A.Richter, K.Riisager, C.Rodriguez-Tajes, D.Rossi, D.Savran, H.Scheit, G.Schrieder, P.Schrock, H.Simon, J.Stroth, K.Summerer, O.Tengblad, H.Weick, C.Wimmer

Diverse mechanisms in proton knockout reactions from the Borromean nucleus 17Ne

NUCLEAR REACTIONS 1H, 12C(17Ne, 2p), (17Ne, 16F), E=500 MeV/nucleon; analyzed available data. 17Ne, 16F; deduced σ(E), resonance parameters, spectroscopic factors. The SIS-18 synchrotron at GSI.

doi: 10.1140/epja/s10050-023-01063-y
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2022CA19      Phys.Lett. B 833, 137374 (2022)

J.Carter, L.M.Donaldson, H.Fujita, Y.Fujita, M.Jingo, C.O.Kureba, M.B.Latif, E.Litvinova, F.Nemulodi, P.von Neumann-Cosel, R.Neveling, P.Papakonstantinou, P.Papka, L.Pellegri, V.Yu.Ponomarev, A.Richter, R.Roth, E.Sideras-Haddad, F.D.Smit, J.A.Swartz, A.Tamii, R.Trippel, I.T.Usman, H.Wibowo

Damping of the isovector giant dipole resonance in 40, 48Ca

NUCLEAR REACTIONS 40,48Ca(p, p'), E=200 MeV; measured reaction products; deduced σ(θ, E), Coulomb σ, contributions from the IsoScalar Giant Monopole Resonance (ISGMR) and the ISGQR lying under the IsoVector Giant Dipole Resonance (IVGDR). Comparison with calculations in the framework of RPA and beyond-RPA in a relativistic approach based on an effective meson-exchange interaction, with the UCOM effective interaction. The Separated Sector Cyclotron (SSC) at the iThemba Laboratory for Accelerator Based Sciences (iThemba LABS), Cape Town, South Africa.

doi: 10.1016/j.physletb.2022.137374
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2022LE02      Phys.Lett. B 827, 136957 (2022)

C.Lehr, F.Wamers, F.Aksouh, Yu.Aksyutina, H.Alvarez-Pol, L.Atar, T.Aumann, S.Beceiro Novo, C.A.Bertulani, K.Boretzky, M.J.G.Borge, C.Caesar, M.Chartier, A.Chatillon, L.V.Chulkov, D.Cortina-Gil, P.Diaz Fernandez, H.Emling, O.Ershova, L.M.Fraile, H.O.U.Fynbo, D.Galaviz, H.Geissel, M.Heil, M.Heine, D.H.H.Hoffmann, M.Holl, H.T.Johansson, B.Jonson, C.Karagiannis, O.A.Kiselev, J.V.Kratz, R.Kulessa, N.Kurz, C.Langer, M.Lantz, T.Le Bleis, R.Lemmon, Yu.A.Litvinov, B.Loher, K.Mahata, J.Marganiec-Galazka, C.Muntz, T.Nilsson, C.Nociforo, W.Ott, V.Panin, S.Paschalis, A.Perea, R.Plag, R.Reifarth, A.Richter, K.Riisager, C.Rodriguez-Tajes, D.Rossi, D.Savran, H.Scheit, G.Schrieder, P.Schrock, H.Simon, J.Stroth, K.Summerer, O.Tengblad, H.Weick, C.Wimmer

Unveiling the two-proton halo character of 17Ne: Exclusive measurement of quasi-free proton-knockout reactions

NUCLEAR REACTIONS 1H(17Ne, 2p), E=498 MeV/nucleon; measured reaction products. 17Ne; deduced σ(E), energy levels, two-proton halo. The GSI synchrotron SIS18.

doi: 10.1016/j.physletb.2022.136957
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2022MA47      Phys.Rev. C 106, 034322 (2022); Erratum Phys.Rev. C 109, 019901 (2024)

M.Markova, A.C.Larsen, P.von Neumann-Cosel, S.Bassauer, A.Gorgen, M.Guttormsen, F.L.Bello Garrote, H.C.Berg, M.M.Bjoroen, T.K.Eriksen, D.Gjestvang, J.Isaak, M.Mbabane, W.Paulsen, L.G.Pedersen, N.I.J.Pettersen, A.Richter, E.Sahin, P.Scholz, S.Siem, G.M.Tveten, V.M.Valsdottir, M.Wiedeking

Nuclear level densities and γ-ray strength functions in 120, 124Sn isotopes: Impact of Porter-Thomas fluctuations

NUCLEAR REACTIONS 120,124Sn(p, p'γ), E=16 MeV; measured Eγ, Iγ, E(p), pγ-coin, E-ΔE distributions using an array of 64 ΔE-E particle telescopes, and OSCAR array of 30 LaBr3(Ce) scintillators for γ detection at the Oslo Cyclotron Laboratory. 120,124Sn; deduced γ strength functions as function of Eγ, (γSF(Eγ)) and nuclear level densities (NLD) using the OSLO method and shape methods, magnitude of the Porter-Thomas (PT) fluctuations. 120,122,124Sn; deduced 0+ states, and first 2+ state in 124Sn. Comparison of nuclear level densities for J=1 states with the constant temperature (CT) model, back-shifted Fermi gas model (BSFG) model calculations, and predictions of the microscopic Hartree-Fock-BCS method, and with previous experimental results. Systematics of average total radiative widths and nuclear level densities (NLD) for 113,114,115,116,117,118,119,120,121,123,124Sn.

doi: 10.1103/PhysRevC.106.034322
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2021MA65      Phys.Rev.Lett. 127, 182501 (2021)

M.Markova, P.von Neumann-Cosel, A.C.Larsen, S.Bassauer, A.Gorgen, M.Guttormsen, F.L.Bello Garrote, H.C.Berg, M.M.Bjoroen, T.Dahl-Jacobsen, T.K.Eriksen, D.Gjestvang, J.Isaak, M.Mbabane, W.Paulsen, L.G.Pedersen, N.I.J.Pettersen, A.Richter, E.Sahin, P.Scholz, S.Siem, G.M.Tveten, V.M.Valsdottir, M.Wiedeking, F.Zeiser

Comprehensive Test of the Brink-Axel Hypothesis in the Energy Region of the Pygmy Dipole Resonance

NUCLEAR REACTIONS 117Sn(3He, α), E=38 MeV; 120,124Sn(p, p'), E=16 MeV; measured reaction products, Eα, Iα, Ep, Ip, Eγ, Iγ; deduced γ-ray strength functions (GSFs). Oslo method.

doi: 10.1103/PhysRevLett.127.182501
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2020BA47      Phys.Rev. C 102, 034327 (2020)

S.Bassauer, P.von Neumann-Cosel, P.-G.Reinhard, A.Tamii, S.Adachi, C.A.Bertulani, P.Y.Chan, A.D'Alessio, H.Fujioka, H.Fujita, Y.Fujita, G.Gey, M.Hilcker, T.H.Hoang, A.Inoue, J.Isaak, C.Iwamoto, T.Klaus, N.Kobayashi, Y.Maeda, M.Matsuda, N.Nakatsuka, S.Noji, H.J.Ong, I.Ou, N.Pietralla, V.Yu.Ponomarev, M.S.Reen, A.Richter, M.Singer, G.Steinhilber, T.Sudo, Y.Togano, M.Tsumura, Y.Watanabe, V.Werner

Electric and magnetic dipole strength in 112, 114, 116, 118, 120, 124Sn

NUCLEAR REACTIONS 112,114,116,118,120,124Sn(p, p'), E=295 MeV; measured E(p), I(p), particle spectra through identification via the correlation of energy loss and time of flight (ToF), double differential σ(θ, E(exc)) using Grand Raiden spectrometer at RCNP accelerator facility; deduced photoabsorption cross sections due to E1 and M1 excitations from multipole decomposition analysis (MDA) after subtraction of the ISGMR and ISGQR contributions, σ, energy and width of isovector giant dipole resonance (IVGDR), B(E1) and B(M1) strengths in the excitation energy range of 6-20 MeV, dipole polarizability. Comparison with previous experimental results from (γ, xn) and (γ, γ') experiments.

doi: 10.1103/PhysRevC.102.034327
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2020BA50      Phys.Lett. B 810, 135804 (2020)

S.Bassauer, P.von Neumann-Cosel, P.-G.Reinhard, A.Tamii, S.Adachi, C.A.Bertulani, P.Y.Chan, G.Colo, A.D'Alessio, H.Fujioka, H.Fujita, Y.Fujita, G.Gey, M.Hilcker, T.H.Hoang, A.Inoue, J.Isaak, C.Iwamoto, T.Klaus, N.Kobayashi, Y.Maeda, M.Matsuda, N.Nakatsuka, S.Noji, H.J.Ong, I.Ou, N.Paar, N.Pietralla, V.Yu.Ponomarev, M.S.Reen, A.Richter, X.Roca-Maza, M.Singer, G.Steinhilber, T.Sudo, Y.Togano, M.Tsumura, Y.Watanabe, V.Werner

Evolution of the dipole polarizability in the stable tin isotope chain

NUCLEAR REACTIONS 112,114,116,118,120,124Sn(p, p'), E=295 MeV; 116Sn(γ, X), E<30 MeV; measured reaction products, Ep, Ip; deduced σ(θ, E), σ, total dipole polarizability. Comparison with available data.

doi: 10.1016/j.physletb.2020.135804
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2020DO11      Phys.Rev. C 102, 064327 (2020)

L.M.Donaldson, J.Carter, P.von Neumann-Cosel, V.O.Nesterenko, R.Neveling, P.-G.Reinhard, I.T.Usman, P.Adsley, C.A.Bertulani, J.W.Brummer, E.Z.Buthelezi, G.R.J.Cooper, R.W.Fearick, S.V.Fortsch, H.Fujita, Y.Fujita, M.Jingo, N.Y.Kheswa, W.Kleinig, C.O.Kureba, J.Kvasil, M.Latif, K.C.W.Li, J.P.Mira, F.Nemulodi, P.Papka, L.Pellegri, N.Pietralla, V.Yu.Ponomarev, B.Rebeiro, A.Richter, N.Yu.Shirikova, E.Sideras-Haddad, A.V.Sushkov, F.D.Smit, G.F.Steyn, J.A.Swartz, A.Tamii

Fine structure of the isovector giant dipole resonance in 142-150Nd and 152Sm

NUCLEAR REACTIONS 142,144,146,148,150Nd, 152Sm(p, p'), E=200 MeV from the Separated Sector Cyclotron (SSC) at iThemba LABS; measured reaction products, E(p), I(p), time-of-flight using the K600 magnetic spectrometer, two multiwire drift chambers (MWDCs) and two plastic scintillators; deduced double-differential σ(E*=10-22 MeV), equivalent photoabsorption spectra, excitation-energy spectra, wavelet power spectra, fine structure of the isovector giant-dipole resonance (IVGDR), fragmentation of the one-particle-one-hole (1p1h) strength into several dominant transitions serving as doorway states in the spherical and intermediate spherical/deformed nuclei. Comparison with predictions of quasiparticle phonon model (QPM), and Skyrme separable random phase approximation (SSRPA).

doi: 10.1103/PhysRevC.102.064327
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2019PO09      Eur.Phys.J. A 55, 236 (2019)

V.Yu.Ponomarev, D.H.Jakubassa-Amundsen, A.Richter, J.Wambach

Excitation of the electric pygmy dipole resonance by inelastic electron scattering

doi: 10.1140/epja/i2019-12784-4
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2019VO14      Eur.Phys.J. A 55, 224 (2019)

P.von Neumann-Cosel, V.Yu.Ponomarev, A.Richter, J.Wambach

Gross, intermediate and fine structure of nuclear giant resonances: Evidence for doorway states

doi: 10.1140/epja/i2019-12795-1
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2018DI14      Phys.Rev. C 98, 054314 (2018)

B.Dietz, B.A.Brown, U.Gayer, N.Pietralla, V.Yu.Ponomarev, A.Richter, P.C.Ries, V.Werner

Chaos and regularity in the spectra of the low-lying dipole excitations of 50, 52, 54Cr

NUCLEAR STRUCTURE 50,52,54Cr; analyzed experimental B(M1) strengths for 1+ states from orbital magnetic-dipole scissors mode, and sizable spin-flip magnetic-dipole strength, and experimental B(E1) strengths for 1- states belonging to the pygmy dipole resonances (PDRs) through random matrix theory (RMT) to analyze fluctuation properties in the subspectra of the energy levels; deduced Gaussian orthogonal ensemble (GOE) for 1+ states, and nearly Poissonian behavior for the 1- states, suggesting collective behavior of the PDRs. Relevance to nuclear resonance fluorescence experiments at the Superconducting Darmstadt Electron Linear Accelerator (S-DALINAC), and the high intensity γ-ray source (HIγS) of the Triangle Universities Nuclear Laboratory (TUNL).

doi: 10.1103/PhysRevC.98.054314
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2018DO01      Phys.Lett. B 776, 133 (2018)

L.M.Donaldson, C.A.Bertulani, J.Carter, V.O.Nesterenko, P.von Neumann-Cosel, R.Neveling, V.Yu.Ponomarev, P.-G.Reinhard, I.T.Usman, P.Adsley, J.W.Brummer, E.Z.Buthelezi, G.R.J.Cooper, R.W.Fearick, S.V.Fortsch, H.Fujita, Y.Fujita, M.Jingo, W.Kleinig, C.O.Kureba, J.Kvasil, M.Latif, K.C.W.Li, J.P.Mira, F.Nemulodi, P.Papka, L.Pellegri, N.Pietralla, A.Richter, E.Sideras-Haddad, F.D.Smit, G.F.Steyn, J.A.Swartz, A.Tamii

Deformation dependence of the isovector giant dipole resonance: The neodymium isotopic chain revisited

NUCLEAR REACTIONS 144,146,148,150Nd, 152Sm(p, p'), E=200 MeV; measured reaction products, Eγ, Iγ; deduced σ, σ(θ, E), σ(θ). Comparison with DWBA calculations.

doi: 10.1016/j.physletb.2017.11.025
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD0860. Data from this article have been entered in the XUNDL database. For more information, click here.


2018FE06      Phys.Rev. C 97, 044325 (2018)

R.W.Fearick, B.Erler, H.Matsubara, P.von Neumann-Cosel, A.Richter, R.Roth, A.Tamii

Origin of fine structure of the giant dipole resonance in sd-shell nuclei

NUCLEAR REACTIONS 24Mg, 28Si, 32S, 40Ca(p, p'), E=295 MeV; analyzed experimental spectra encompassing giant-dipole resonance (GDR), and B(E1) strength distributions. Multipole decomposition and wavelet analysis; deduced fine structure of the GDR, wavelet power spectra from experimental data. Random phase approximation (RPA) calculations on a deformed ground state with a realistic nucleon-nucleon interaction. B(E1) strength distributions and wavelet power spectra computed in HFB+QRPA approach with D1S Gogny force.

doi: 10.1103/PhysRevC.97.044325
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2018JI10      Eur.Phys.J. A 54, 234 (2018)

M.Jingo, E.Z.Buthelezi, J.Carter, G.R.J.Cooper, R.W.Fearick, S.V.Fortsch, C.O.Kureba, A.M.Krumbholz, P.von Neumann-Cosel, R.Neveling, P.Papka, I.Poltoratska, V.Yu.Ponomarev, A.Richter, E.Sideras-Haddad, F.D.Smit, J.A.Swartz, A.Tamii, I.T.Usman

Studies of the Giant Dipole Resonance in 27Al , 40Ca , 56Fe , 58Ni and 208Pb with high energy-resolution inelastic proton scattering under 0 degree

NUCLEAR REACTIONS 27Al, 40Ca, 56Fe, 58Ni, 208Pb(p, p'), E=200 MeV; measured Ep, Ip(θ) using two Vertical Drift Chambers and two plastic scintillators behind them; deduced σ(E, θ), IsoVector Giant Dipole Resonance (IVGDR) energy, Coulomb excitation σ vs E*, equivalent photoabsorption σ, IVGDR fine structure using Continuous Wavelet Transform (CWT) and Discrete Wavelet Transform (DWT); calculated equivalent photoabsorption σ using Quasiparticle-Phonon Model (QPM) with (1+2)-phonon and 1-phonon model spaces, power spectra from CWT analysis.

doi: 10.1140/epja/i2018-12664-5
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD0936.


2018WA07      Phys.Rev. C 97, 034612 (2018)

F.Wamers, J.Marganiec, F.Aksouh, Yu.Aksyutina, H.Alvarez-Pol, T.Aumann, S.Beceiro Novo, C.A.Bertulani, K.Boretzky, M.J.G.Borge, M.Chartier, A.Chatillon, L.V.Chulkov, D.Cortina-Gil, H.Emling, O.Ershova, L.M.Fraile, H.O.U.Fynbo, D.Galaviz, H.Geissel, M.Heil, D.H.H.Hoffmann, J.Hoffman, H.T.Johansson, B.Jonson, C.Karagiannis, O.A.Kiselev, J.V.Kratz, R.Kulessa, N.Kurz, C.Langer, M.Lantz, T.Le Bleis, C.Lehr, R.Lemmon, Yu.A.Litvinov, K.Mahata, C.Muntz, T.Nilsson, C.Nociforo, W.Ott, V.Panin, S.Paschalis, A.Perea, R.Plag, R.Reifarth, A.Richter, K.Riisager, C.Rodriguez-Tajes, D.Rossi, D.Savran, G.Schrieder, H.Simon, J.Stroth, K.Summerer, O.Tengblad, S.Typel, H.Weick, M.Wiescher, C.Wimmer

Comparison of electromagnetic and nuclear dissociation of 17Ne

NUCLEAR REACTIONS H, C, Pb(17Ne, p15O), (17Ne, p14O), (17Ne, 2p15O), (17Ne, 2p14O), E=500 MeV/nucleon; measured reaction products, mass spectra of 13O, 14O and 15O isotopes, (14O)p-, (14O)2p-, (15O)p-, (15O)2p-coin using lead, carbon, and polyethylene targets and ALADIN-R3B setup at GSI; deduced transverse momentum distributions of 14O and 15O, relative energy spectra, inclusive σ, σ(1p) and σ(2p) for fragmentation of 17Ne in 14O and 15o for different targets, electromagnetic dissociation (EMD) cross sections. Electromagnetic and nuclear dissociations. One-proton knockout, and three body 15O+2p correlations. Comparison of measured cross sections and energy spectra with calculations using three-body 15O+2p model, and Hartree-Bogoliubov theory. Relevance to 15O(2p, γ)17Ne capture reaction in astrophysical rp-process.

doi: 10.1103/PhysRevC.97.034612
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD0919. Data from this article have been entered in the XUNDL database. For more information, click here.


2017BE10      Phys.Rev.Lett. 118, 212502 (2017)

T.Beck, J.Beller, N.Pietralla, M.Bhike, J.Birkhan, V.Derya, U.Gayer, A.Hennig, J.Isaak, B.Loher, V.Yu.Ponomarev, A.Richter, C.Romig, D.Savran, M.Scheck, W.Tornow, V.Werner, A.Zilges, M.Zweidinger

E2 decay strength of the M1 scissors mode of 156Gd and its first excited rotational state

NUCLEAR REACTIONS 156Gd(γ, γ'), E=3.07 MeV; measured reaction products, Eγ, Iγ; deduced relative intensities for transitions, B(M1), B(E2), multipole mixing ratio of the decay transition from the scissors mode to the 2+1 state in a deformed nucleus.

doi: 10.1103/PhysRevLett.118.212502
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2017BI09      Phys.Rev.Lett. 118, 252501 (2017)

J.Birkhan, M.Miorelli, S.Bacca, S.Bassauer, C.A.Bertulani, G.Hagen, H.Matsubara, P.von Neumann-Cosel, T.Papenbrock, N.Pietralla, V.Yu.Ponomarev, A.Richter, A.Schwenk, A.Tamii

Electric Dipole Polarizability of 48Ca and Implications for the Neutron Skin

NUCLEAR REACTIONS 48Ca(p, p'), E=295 MeV; 48Ca(γ, X), E<25 MeV; measured reaction products; deduced σ, electric dipole polarizability, B(E1).

doi: 10.1103/PhysRevLett.118.252501
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetE2558.


2017DI01      Phys.Rev.Lett. 118, 012501 (2017)

B.Dietz, A.Heusler, K.H.Maier, A.Richter, B.A.Brown

Chaos and Regularity in the Doubly Magic Nucleus 208Pb

NUCLEAR STRUCTURE 208Pb; calculated energy levels for negative and positive parity states. Two-body Michigan-three-Yukawa (M3Y) interaction on a one-boson exchange potential with short-range components determined with the help of the Reid nucleon-nucleon potential.

doi: 10.1103/physrevlett.118.012501
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2017MA28      Phys.Rev. C 95, 054316 (2017)

M.Mathy, J.Birkhan, H.Matsubara, P.von Neumann-Cosel, N.Pietralla, V.Yu.Ponomarev, A.Richter, A.Tamii

Search for weak M1 transitions in 48Ca with inelastic proton scattering

NUCLEAR REACTIONS 48Ca(p, p'), E=295 MeV; measured Ep, Ip, σ(θ) using Grand Raiden spectrometer at RCNP-Osaka. Multipole decomposition analysis (MDA) of experimental data. 48Ca; deduced levels, J, π, B(M1), quenching factors of GT and spin-M1 strength in fp-shell nuclei, negligible role of meson-exchange currents. Comparison with previous experimental (e, e'), and evaluated data.

doi: 10.1103/PhysRevC.95.054316
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Data from this article have been entered in the XUNDL database. For more information, click here.


2017MA67      Phys.Rev.Lett. 119, 182503 (2017)

D.Martin, P.von Neumann-Cosel, A.Tamii, N.Aoi, S.Bassauer, C.A.Bertulani, J.Carter, L.Donaldson, H.Fujita, Y.Fujita, T.Hashimoto, K.Hatanaka, T.Ito, A.Krugmann, B.Liu, Y.Maeda, K.Miki, R.Neveling, N.Pietralla, I.Poltoratska, V.Yu.Ponomarev, A.Richter, T.Shima, T.Yamamoto, M.Zweidinger

Test of the Brink-Axel Hypothesis for the Pygmy Dipole Resonance

NUCLEAR REACTIONS 96Mo(polarized p, p'), E=295 MeV; measured reaction products, Ep, Ip; deduced σ(θ), σ(θ, E), gamma strength functions.

doi: 10.1103/PhysRevLett.119.182503
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2016BI05      Phys.Rev. C 93, 041302 (2016)

J.Birkhan, H.Matsubara, P.von Neumann-Cosel, N.Pietralla, V.Yu.Ponomarev, A.Richter, A.Tamii, J.Wambach

Electromagnetic M1 transition strengths from inelastic proton scattering: The cases of 48Ca and 208Pb

NUCLEAR REACTIONS 48Ca(p, p'), E=295 MeV; analyzed σ(θ) for dominating peak at 10.23 MeV ascribed to isovector spin-flip M1 (IVSM1) resonance; deduced B(M1) using a method based on isospin symmetry. Comparison with B(M1) deduced from (p, p') at 201 MeV, (p, n) at 295 MeV, (e, e') and (γ, n) data. 208Pb(p, p'), (n, n'γ), (polarized γ, γ'); analyzed B(M1) strengths in 6.5-9 MeV excitation region. Quenching phenomenon of the spin-isospin response. Method for extracting systematic information on the IVSM1 resonances in heavy nuclei.

doi: 10.1103/PhysRevC.93.041302
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetE2503. Data from this article have been entered in the XUNDL database. For more information, click here.


2016MA42      Phys.Lett. B 759, 200 (2016)

J.Marganiec, F.Wamers, F.Aksouh, Yu.Aksyutina, H.Alvarez-Pol, T.Aumann, S.Beceiro Novo, C.A.Bertulani, K.Boretzky, M.J.G.Borge, M.Chartier, A.Chatillon, L.V.Chulkov, D.Cortina-Gil, H.Emling, O.Ershova, L.M.Fraile, H.O.U.Fynbo, D.Galaviz, H.Geissel, M.Heil, D.H.H.Hoffmann, J.Hoffmann, H.T.Johansson, B.Jonson, C.Karagiannis, O.A.Kiselev, J.V.Kratz, R.Kulessa, N.Kurz, C.Langer, M.Lantz, T.Le Bleis, R.Lemmon, Yu.A.Litvinov, K.Mahata, C.Muntz, T.Nilsson, C.Nociforo, G.Nyman, W.Ott, V.Panin, S.Paschalis, A.Perea, R.Plag, R.Reifarth, A.Richter, C.Rodriguez-Tajes, D.Rossi, K.Riisager, D.Savran, G.Schrieder, H.Simon, J.Stroth, K.Summerer, O.Tengblad, S.Typel, H.Weick, M.Wiescher, C.Wimmer

Coulomb and nuclear excitations of narrow resonances in 17Ne

NUCLEAR REACTIONS H, C, Pb(17Ne, 2p), E=500 MeV/nucleon; measured reaction products, Ep, Ip. 17Ne; deduced σ(E), excitation energies and σ for resolved resonances in 17Ne, B(E2). Comparison with available data.

doi: 10.1016/j.physletb.2016.05.073
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2016US03      Phys.Rev. C 94, 024308 (2016)

I.T.Usman, Z.Buthelezi, J.Carter, G.R.J.Cooper, R.W.Fearick, S.V.Fortsch, H.Fujita, Y.Fujita, P.von Neumann-Cosel, R.Neveling, P.Papakonstantinou, I.Pysmenetska, A.Richter, R.Roth, E.Sideras-Haddad, F.D.Smit

Fine structure of the isoscalar giant quadrupole resonance in 28Si and 27Al

NUCLEAR REACTIONS 27Al, Si(p, p'), E=200 MeV; measured scattered proton spectra, angular distributions using K600 magnetic spectrometer of iThemba LABS. 27Al, 28Si; deduced levels and resonances between 6-30 MeV excitation, isoscalar giant quadrupole resonance (ISGQR), E2 strength distributions, continuous wavelet transform (CWT) power spectra. Wavelet analysis. Comparison with random phase approximation (RPA), and second-RPA (SRPA) calculations with realistic interaction from unitary correlation operator method (UCOM). Comparison with (α, α') and (e, e') data.

doi: 10.1103/PhysRevC.94.024308
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2015HA21      Phys.Rev. C 92, 031305 (2015)

T.Hashimoto, A.M.Krumbholz, P.-G.Reinhard, A.Tamii, P.von Neumann-Cosel, T.Adachi, N.Aoi, C.A.Bertulani, H.Fujita, Y.Fujita, E.Ganioglu, K.Hatanaka, E.Ideguchi, C.Iwamoto, T.Kawabata, N.T.Khai, A.Krugmann, D.Martin, H.Matsubara, K.Miki, R.Neveling, H.Okamura, H.J.Ong, I.Poltoratska, V.Yu.Ponomarev, A.Richter, H.Sakaguchi, Y.Shimbara, Y.Shimizu, J.Simonis, F.D.Smit, G.Susoy, T.Suzuki, J.H.Thies, M.Yosoi, J.Zenihiro

Dipole polarizability of 120Sn and nuclear energy density functionals

NUCLEAR REACTIONS 120Sn(polarized p, p'), E=295 MeV; measured scattered proton spectra, p(θ) using Grand Raiden spectrometer at RCNP-Osaka; analyzed polarization transfer observables; deduced ISGQR excitation, B(E1), precise electric dipole polarizability αD, nuclear symmetry energy and its density dependence. Comparison with other experimental data. Comparison with model calculations based on Skyrme interactions and on relativistic Hamiltonians.

doi: 10.1103/PhysRevC.92.031305
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2015KR05      Phys.Lett. B 744, 7 (2015)

A.M.Krumbholz, P.von Neumann-Cosel, T.Hashimoto, A.Tamii, T.Adachi, C.A.Bertulani, H.Fujita, Y.Fujita, E.Ganioglu, K.Hatanaka, C.Iwamoto, T.Kawabata, N.T.Khai, A.Krugmann, D.Martin, H.Matsubara, R.Neveling, H.Okamura, H.J.Ong, I.Poltoratska, V.Yu.Ponomarev, A.Richter, H.Sakaguchi, Y.Shimbara, Y.Shimizu, J.Simonis, F.D.Smit, G.Susoy, J.H.Thies, T.Suzuki, M.Yosoi, J.Zenihiro

Low-energy electric dipole response in 120Sn

NUCLEAR REACTIONS 120Sn(p, p'), E=295 MeV; measured reaction products, Ep, Ip; deduced σ, σ(θ, E), B(E1). Comparison with available data.

doi: 10.1016/j.physletb.2015.03.023
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2015MA09      Eur.Phys.J. A 51, 9 (2015)

J.Marganiec, F.Wamers, F.Aksouh, Yu.Aksyutina, H.Alvarez-Pol, T.Aumann, S.Beceiro Novo, K.Boretzky, M.J.G.Borge, M.Chartier, A.Chatillon, L.V.Chulkov, D.Cortina-Gil, H.Emling, O.Ershova, L.M.Fraile, H.O.U.Fynbo, D.Galaviz, H.Geissel, M.Heil, D.H.H.Hoffmann, J.Hoffmann, H.T.Johansson, B.Jonson, C.Karagiannis, O.A.Kiselev, J.V.Kratz, R.Kulessa, N.Kurz, C.Langer, M.Lantz, T.Le Bleis, R.Lemmon, Yu.A.Litvinov, K.Mahata, C.Muntz, T.Nilsson, C.Nociforo, G.Nyman, W.Ott, V.Panin, S.Paschalis, A.Perea, R.Plag, R.Reifarth, A.Richter, C.Rodriguez-Tajes, D.Rossi, K.Riisager, D.Savran, G.Schrieder, H.Simon, J.Stroth, K.Summerer, O.Tengblad, H.Weick, M.Wiescher, C.Wimmer, M.V.Zhukov

Studies of continuum states in 16Ne using three-body correlation techniques

NUCLEAR REACTIONS C(17Ne, n16Ne), E≈500 MeV/nucleon; measured reaction products using Si-strip detectors and separation by magnetic field of ALADIN magnet. 16N deduced resonance energies, widths of different channels, relative energy spectrum of the channels, levels, J, π, two- and three-body correlations.

doi: 10.1140/epja/i2015-15009-0
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2015MA48      Phys.Rev.Lett. 115, 102501 (2015)

H.Matsubara, A.Tamii, H.Nakada, T.Adachi, J.Carter, M.Dozono, H.Fujita, K.Fujita, Y.Fujita, K.Hatanaka, W.Horiuchi, M.Itoh, T.Kawabata, S.Kuroita, Y.Maeda, P.Navratil, P.von Neumann-Cosel, R.Neveling, H.Okamura, L.Popescu, I.Poltoratska, A.Richter, B.Rubio, H.Sakaguchi, S.Sakaguchi, Y.Sakemi, Y.Sasamoto, Y.Shimbara, Y.Shimizu, F.D.Smit, K.Suda, Y.Tameshige, H.Tokieda, Y.Yamada, M.Yosoi, J.Zenihiro

Nonquenched Isoscalar Spin-M1 Excitations in sd-Shell Nuclei

NUCLEAR REACTIONS 24Mg, 28Si, 32S, 36Ar(p, p'), E=295 MeV; measured reaction products, Ep, Ip; deduced σ(θ), σ(θ, E), the squared spin M1 nuclear transition matrix elements, no quenching for isoscalar spin M1 transitions, while the matrix elements for isovector spin M1 transitions are quenched by an amount comparable with the analogous Gamow-Teller transitions on those target nuclei. Comparison with no-core shell model (NCSM) calculations.

doi: 10.1103/PhysRevLett.115.102501
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2014BE05      Phys.Rev. C 89, 024314 (2014)

W.Bentz, A.Arima, A.Richter, J.Wambach

Analytic approach to nuclear rotational states and the role of spin: A minimal model

doi: 10.1103/PhysRevC.89.024314
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2014EF01      Phys.Rev. C 89, 027301 (2014)

V.D.Efros, P.von Neumann-Cosel, A.Richter

Properties of the first excited state of 9Be derived from (γ, n) and (e, e') reactions

NUCLEAR REACTIONS 9Be(e, e'), E not given; 9Be(γ, n), E<2.21 MeV; deduced level energy and width of the first excited state in 9Be, B(E1) strength of decay of near-threshold 1/2+ resonance to ground state. R-matrix approach.

doi: 10.1103/PhysRevC.89.027301
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2014MA26      Acta Phys.Pol. B45, 229 (2014)

J.Marganiec, F.Wamers, F.Aksouh, Y.Aksyutina, H.Alvarez-Pol, T.Aumann, S.Beceiro, C.Bertulani, K.Boretzky, M.J.G.Borge, M.Chartier, A.Chatillon, L.Chulkov, D.Cortina-Gil, I.Egorova, H.Emling, O.Ershova, C.Forssen, L.M.Fraile, H.Fynbo, D.Galaviz, H.Geissel, L.Grigorenko, M.Heil, D.H.H.Hoffmann, J.Hoffmann, H.Johansson, B.Jonson, M.Karakoc, C.Karagiannis, O.Kiselev, J.V.Kratz, R.Kulessa, N.Kurz, C.Langer, M.Lantz, K.Larsson, T.Le Bleis, R.Lemmon, Yu.A.Litvinov, K.Mahata, C.Muntz, T.Nilsson, C.Nociforo, G.Nyman, W.Ott, V.Panin, Yu.Parfenova, S.Paschalis, A.Perea, R.Plag, R.Reifarth, A.Richter, K.Riisager, C.Rodriguez-Tajes, D.Rossi, G.Schrieder, N.Shulgina, H.Simon, J.Stroth, K.Summerer, J.Taylor, O.Tengblad, E.Tengborn, H.Weick, M.Wiescher, C.Wimmer, M.Zhukov

Study of the 15O(2p, γ)17Ne Cross Section by Coulomb Dissociation of 17Ne for the rp Process of Nucleosynthesis

NUCLEAR REACTIONS Pb(17Ne, 2p)15O, E=500 MeV/nucleon; measured reaction products, Eγ, Iγ, Ep, Ip; deduced σ, σ(E), resonances. Comparison with theoretical calculations, R3BROOT package.

doi: 10.5506/APhysPolB.45.229
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2014OZ03      Phys.Rev. C 90, 024304 (2014)

B.Ozel-Tashenov, J.Enders, H.Lenske, A.M.Krumbholz, E.Litvinova, P.von Neumann-Cosel, I.Poltoratska, A.Richter, G.Rusev, D.Savran, N.Tsoneva

Low-energy dipole strength in 112, 120Sn

NUCLEAR REACTIONS 112Sn(γ, γ'), E(endpoint)=5.5, 7.5, 9.5 MeV bremsstrahlung; 120Sn(γ, γ'), E(endpoint)=7.5, 9.1 MeV bremsstrahlung; measured Eγ, Iγ, γ(θ) using S-DALINAC NRF facility at the TU Darmstadt. 112,120Sn; deduced levels, Γ02/Γ, B(E1), summed B(E1) strengths. Fluctuation analysis of γ spectra for unresolved strength. Comparison with quasiparticle-phonon model, and relativistic time blocking approximations (RQTBA), and previous experimental results.

doi: 10.1103/PhysRevC.90.024304
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2014PO03      Phys.Rev. C 89, 054322 (2014)

I.Poltoratska, R.W.Fearick, A.M.Krumbholz, E.Litvinova, H.Matsubara, P.von Neumann-Cosel, V.Yu.Ponomarev, A.Richter, A.Tamii

Fine structure of the isovector giant dipole resonance in 208Pb: Characteristic scales and level densities

NUCLEAR REACTIONS 208Pb(p, p'), E=295 MeV; analyzed experimental data obtained using Grand-Raiden spectrometer at RCNP facility, double-differential σ(θ), continuous and discrete wavelet transform (CWT, DWT) analysis of excitation energy spectrum, extraction of scales for the observed fine structure in isovector-giant dipole resonance (IVGDR), level density of 1- states in IVGDR region, GDR width, B(E1) strength. Comparison with theoretical predictions.

doi: 10.1103/PhysRevC.89.054322
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2014WA09      Phys.Rev.Lett. 112, 132502 (2014)

F.Wamers, J.Marganiec, F.Aksouh, Yu.Aksyutina, H.Alvarez-Pol, T.Aumann, S.Beceiro Novo, K.Boretzky, M.J.G.Borge, M.Chartier, A.Chatillon, L.V.Chulkov, D.Cortina-Gil, H.Emling, O.Ershova, L.M.Fraile, H.O.U.Fynbo, D.Galaviz, H.Geissel, M.Heil, D.H.H.Hoffmann, H.T.Johansson, B.Jonson, C.Karagiannis, O.A.Kiselev, J.V.Kratz, R.Kulessa, N.Kurz, C.Langer, M.Lantz, T.Le Bleis, R.Lemmon, Yu.A.Litvinov, K.Mahata, C.Muntz, T.Nilsson, C.Nociforo, G.Nyman, W.Ott, V.Panin, S.Paschalis, A.Perea, R.Plag, R.Reifarth, A.Richter, C.Rodriguez-Tajes, D.Rossi, K.Riisager, D.Savran, G.Schrieder, H.Simon, J.Stroth, K.Summerer, O.Tengblad, H.Weick, C.Wimmer, M.V.Zhukov

First Observation of the Unbound Nucleus 15Ne

NUCLEAR REACTIONS C(17Ne, 2p)15Ne, E=500 MeV/nucleon; measured reaction products; deduced fractional energy spectra, J, π, energy levels, atomic mass excess.

RADIOACTIVITY 15Ne(2p); measured decay products, Ep, Ip; deduced implications for 13O+p+p system.

doi: 10.1103/PhysRevLett.112.132502
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2013AK01      Phys.Lett. B 718, 1309 (2013)

Yu.Aksyutina, T.Aumann, K.Boretzky, M.J.G.Borge, C.Caesar, A.Chatillon, L.V.Chulkov, D.Cortina-Gil, U.Datta Pramanik, H.Emling, H.O.U.Fynbo, H.Geissel, G.Ickert, H.T.Johansson, B.Jonson, R.Kulessa, C.Langer, T.LeBleis, K.Mahata, G.Munzenberg, T.Nilsson, G.Nyman, R.Palit, S.Paschalis, W.Prokopowicz, R.Reifarth, D.Rossi, A.Richter, K.Riisager, G.Schrieder, H.Simon, K.Summerer, O.Tengblad, H.Weick, M.V.Zhukov

Momentum profile analysis in one-neutron knockout from Borromean nuclei

NUCLEAR REACTIONS 1H(8He, X), E=240 MeV/nucleon; 1H(11Li, X), E=280 MeV/nucleon; 1H(14Be, X), E=304 MeV/nucleon; analyzed available data. 7,8He, 10,11Li, 12,13Be; deduced s-, d-wave components in the ground-state wave functions.

doi: 10.1016/j.physletb.2012.12.028
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2013AK02      Phys.Rev. C 87, 064316 (2013)

Yu.Aksyutina, T.Aumann, K.Boretzky, M.J.G.Borge, C.Caesar, A.Chatillon, L.V.Chulkov, D.Cortina-Gil, U.Datta Pramanik, H.Emling, H.O.U.Fynbo, H.Geissel, G.Ickert, H.T.Johansson, B.Jonson, R.Kulessa, C.Langer, T.LeBleis, K.Mahata, G.Munzenberg, T.Nilsson, G.Nyman, R.Palit, S.Paschalis, W.Prokopowicz, R.Reifarth, D.Rossi, A.Richter, K.Riisager, G.Schrieder, H.Simon, K.Summerer, O.Tengblad, H.Weick, M.V.Zhukov

Structure of the unbound nucleus 13Be: One-neutron knockout reaction data from 14Be analyzed in a holistic approach

NUCLEAR REACTIONS 1H(14Be, n), [14Be secondary beam from Be(16O, X), E=360 MeV/nucleon primary reaction], E=304 MeV/nucleon; measured particle and neutron spectra, (fragment)n-coin in one-neutron knockout reaction, energy loss, time-of-flight, transverse momentum distributions using ALADIN-LAND system at GSI facility; deduced invariant mass in 12Be+n system, relative intensities of s-, p- and d-components, momentum-profile distribution. 13Be; deduced levels, resonances, J, π, widths, energies of S-matrix poles. 12Be; deduced levels, J, π from neutron decay of resonance in 13Be. 14C(7Li, 8B), E=82 MeV; 14C(π-, p), E=stopped pions; 14C(11B, 12N), E=190 MeV; 13C(14C, 14O), E=337 MeV; 2H(12Be, p), E=72 MeV/nucleon; reviewed resonance energies, J, π, width data for 13Be in missing mass methods. C(14B, n12Be), E=35, 287 MeV/nucleon; 1H(14Be, n12Be), E=68 MeV/nucleon; reviewed and analyzed resonance energies, J, π, width data for 13Be in invariant mass methods. 1H(14Be, n), E=68, 304 MeV/nucleon; analyzed relative energy spectra in 12Be+n system, σ, resonance energies and widths from RIKEN and current (GSI) data. Impulse approximation formalism. Dominance of s-wave component in 12Be+n system.

doi: 10.1103/PhysRevC.87.064316
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2013AK05      Phys.Rev.Lett. 111, 242501 (2013)

Yu.Aksyutina, T.Aumann, K.Boretzky, M.J.G.Borge, C.Caesar, A.Chatillon, L.V.Chulkov, D.Cortina-Gil, U.Datta Pramanik, H.Emling, H.O.U.Fynbo, H.Geissel, A.Heinz, G.Ickert, H.T.Johansson, B.Jonson, R.Kulessa, C.Langer, T.LeBleis, K.Mahata, G.Munzenberg, T.Nilsson, G.Nyman, R.Palit, S.Paschalis, W.Prokopowicz, R.Reifarth, D.Rossi, A.Richter, K.Riisager, G.Schrieder, H.Simon, K.Summerer, O.Tengblad, R.Thies, H.Weick, M.V.Zhukov

Study of the 14Be Continuum: Identification and Structure of its Second 2+ State

NUCLEAR REACTIONS 1H(14Be, 12Be), E= 304 MeV/nucleon; measured reaction products, En, In. 14Be; deduced energy levels, J, π. Comparison with available data.

doi: 10.1103/PhysRevLett.111.242501
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2013BE38      Phys.Rev.Lett. 111, 172501 (2013)

J.Beller, N.Pietralla, J.Barea, M.Elvers, J.Endres, C.Fransen, J.Kotila, O.Moller, A.Richter, T.R.Rodriguez, C.Romig, D.Savran, M.Scheck, L.Schnorrenberger, K.Sonnabend, V.Werner, A.Zilges, M.Zweidinger

Constraint on 0νββ Matrix Elements from a Novel Decay Channel of the Scissors Mode: The Case of 154Gd

NUCLEAR REACTIONS 154Gd(γ, γ'), E<4.5 MeV; measured reaction products, Eγ, Iγ; deduced level energies, J, π, B(M1), B(E1). Comparison with IBM-2 and EDF calculations.

RADIOACTIVITY 154Sm(2β-); calculated neutrinoless nuclear matrix elements.

doi: 10.1103/PhysRevLett.111.172501
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2012PO07      Phys.Rev. C 85, 041304 (2012)

I.Poltoratska, P.von Neumann-Cosel, A.Tamii, T.Adachi, C.A.Bertulani, J.Carter, M.Dozono, H.Fujita, K.Fujita, Y.Fujita, K.Hatanaka, M.Itoh, T.Kawabata, Y.Kalmykov, A.M.Krumbholz, E.Litvinova, H.Matsubara, K.Nakanishi, R.Neveling, H.Okamura, H.J.Ong, B.Ozel-Tashenov, V.Yu.Ponomarev, A.Richter, B.Rubio, H.Sakaguchi, Y.Sakemi, Y.Sasamoto, Y.Shimbara, Y.Shimizu, F.D.Smit, T.Suzuki, Y.Tameshige, J.Wambach, M.Yosoi, J.Zenihiro

Pygmy dipole resonance in 208Pb

NUCLEAR REACTIONS 208Pb(p, p'), E=295 MeV; measured Ep, Ip, σ(θ). 208Pb; deduced levels, J, π, PDR, σ(E1), σ(M1), B(E1). Multipole decomposition analysis based on DWBA calculations. Comparison with quasiparticle-phonon model (QPM), relativistic time-blocking approximation (RTBA), and shell model calculations. Separation of PDR and GDR strength with Coulomb-nuclear interference.

doi: 10.1103/PhysRevC.85.041304
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2012US02      J.Phys.:Conf.Ser. 337, 012034 (2012)

I.Usman, Z.Buthelezi, J.Carter, G.R.J.Cooper, R.W.Fearick, S.V.Fortsch, H.Fujita, Y.Kalmykov, P.von Neumann-Cosel, R.Neveling, I.Poltoratska, A.Richter, A.Shevchenko, E.Sideras-Haddad, F.D.Smit, J.Wambach

2+ level densities in 40Ca extracted from high energy-resolution (p, p') experiments

NUCLEAR REACTIONS 40Ca(p, p'), E=200 MeV; measured reaction products; deduced σ(θ, E), autocorrelation function, level density with specified J, π; calculated density with specified J, π using BSFG, HFB and HF-BCS.

doi: 10.1088/1742-6596/337/1/012034
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2011BE24      Phys.Rev. C 84, 014327 (2011)

W.Bentz, A.Arima, J.Enders, A.Richter, J.Wambach

Rotational states in deformed nuclei: An analytic approach

doi: 10.1103/PhysRevC.84.014327
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2011GO02      Nucl.Phys. A851, 1 (2011)

A.Gook, M.Chernykh, C.Eckardt, J.Enders, P.von Neumann-Cosel, A.Oberstedt, S.Oberstedt, A.Richter

Fragment characteristics from fission of 238U and 234U induced by 6.5-9.0 MeV bremsstrahlung

NUCLEAR REACTIONS 234,238U(γ, F), E=5-9 MeV bremsstrahlung; measured fission fragment energy spectra, mass distributions and yields using twin Frisch grid ionization chamber; deduced fission reaction mechanism features. Comparison with other data and multi-modal random-neck rupture model.

doi: 10.1016/j.nuclphysa.2010.12.012
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2011HE24      J.Phys.:Conf.Ser. 312, 092029 (2011)

A.M.Heilmann, P.von Neumann-Cosel, A.Tamil, T.Adachi, C.Bertulani, J.Carter, H.Fujuita, Y.Fujita, K.Hatanaka, K.Hirota, On.H.Jin, T.Kawabata, A.Krugmann, H.Matsubara, E.Litvinova, R.Neveling, H.Okamura, B.Ozel-Tashenov, I.Poltoratska, V.Yu.Ponomarev, A.Richter, H.Sakaguchi, Y.Sakemi, Y.Sasamoto, Y.Shimizu, Y.Shimbara, F.D.Smit, T.Suzuki, Y.Tameshige, Y.Yasuda, M.Yosoi, J.Zenihiro

Electric dipole response in 120Sn

NUCLEAR REACTIONS 120Sn(polarized p, p'), E=295 MeV; measured Ep, Ip(θ=forward), proton polarization using high-resolution Grand Raiden magnetic spectrometer; deduced B(E1) strength distribution. Data of published DALINAC-S experiment with (γ, γ') used to extract B(E1) strengths.

doi: 10.1088/1742-6596/312/9/092029
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2011NE16      Nucl.Instrum.Methods Phys.Res. A 654, 29 (2011)

R.Neveling, H.Fujita, F.D.Smit, T.Adachi, G.P.A.Berg, E.Z.Buthelezi, J.Carter, J.L.Conradie, M.Couder, R.W.Fearick, S.V.Fortsch, D.T.Fourie, Y.Fujita, J.Gorres, K.Hatanaka, M.Jingo, A.M.Krumbholz, C.O.Kureba, J.P.Mira, S.H.T.Murray, P.Von Neumann-Cosel, S.O'Brien, P.Papka, I.Poltoratska, A.Richter, E.Sideras-Haddad, J.A.Swartz, A.Tamii, I.T.Usman, J.J.Van Zyl

High energy-resolution zero-degree facility for light-ion scattering and reactions at iThemba LABS

NUCLEAR REACTIONS 40Ca(p, p'), E=200 MeV; measured products, 40Ca; deduced σ(θ). Data were imported from EXFOR entry D0706.

doi: 10.1016/j.nima.2011.06.077
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2011TA18      Phys.Rev.Lett. 107, 062502 (2011)

A.Tamii, I.Poltoratska, P.von Neumann-Cosel, Y.Fujita, T.Adachi, C.A.Bertulani, J.Carter, M.Dozono, H.Fujita, K.Fujita, K.Hatanaka, D.Ishikawa, M.Itoh, T.Kawabata, Y.Kalmykov, A.M.Krumbholz, E.Litvinova, H.Matsubara, K.Nakanishi, R.Neveling, H.Okamura, H.J.Ong, B.Ozel-Tashenov, B.Rubio, H.Sakaguchi, Y.Sakemi, Y.Sasamoto, Y.Shimbara, Y.Shimizu, V.Yu.Ponomarev, A.Richter, F.D.Smit, T.Suzuki, Y.Tameshige, J.Wambach, R.Yamada, M.Yosoi, J.Zenihiro

Complete Electric Dipole Response and the Neutron Skin in 208Pb

NUCLEAR REACTIONS 208Pb(p, p'), E<20 MeV; measured reaction products, proton spectra; deduced electric dipole (E1) and spin magnetic dipole (M1) modes, E1 strength distribution, neutron skin thickness. Comparison with experimental data.

doi: 10.1103/PhysRevLett.107.062502
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2011TE06      Phys.Rev. C 84, 064616 (2011)

E.Tengborn, A.M.Moro, T.Nilsson, M.Alcorta, M.J.G.Borge, J.Cederkall, C.Diget, L.M.Fraile, H.O.U.Fynbo, J.Gomez-Camacho, H.B.Jeppesen, H.T.Johansson, B.Jonson, O.S.Kirsebom, H.H.Knudsen, M.Madurga, G.Nyman, A.Richter, K.Riisager, G.Schrieder, O.Tengblad, N.Timofeyuk, M.Turrion, D.Voulot, F.Wenander

The 8Li + 2H reaction studied in inverse kinematics at 3.15 MeV/nucleon using the REX-ISOLDE post-accelerator

NUCLEAR REACTIONS 2H(8Li, p), (8Li, d), (8Li, t), [8Li beam from Ta(p, X), E=1.4 GeV primary reaction], E=3.15 MeV/nucleon; measured particle spectra, energy loss, σ(θ). 7,8,9Li; deduced levels, J, π, asymptotic normalization coefficients (ANC), Shell-model spectroscopic amplitudes. Coupled-channels and distorted-wave Born approximation (DWBA) analyses of σ(θ) data. REX-ISOLDE post-accelerator.

doi: 10.1103/PhysRevC.84.064616
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2011US01      Phys.Lett. B 698, 191 (2011)

I.Usman, Z.Buthelezi, J.Carter, G.R.J.Cooper, R.W.Fearick, S.V.Fortsch, H.Fujita, Y.Fujita, Y.Kalmykov, P.von Neumann-Cosel, R.Neveling, P.Papakonstantinou, A.Richter, R.Roth, A.Shevchenko, E.Sideras-Haddad, F.D.Smit

Fine structure of the isoscalar giant quadrupole resonance in 40Ca due to Landau damping?

NUCLEAR REACTIONS 40Ca(p, p'), E=200 MeV; measured proton spectra. 40Ca; deduced energy scale for isoscalar giant quadrupole resonance, fine structure. Comparison with RPA and SRPA calculations.

doi: 10.1016/j.physletb.2011.03.015
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2011US03      Phys.Rev. C 84, 054322 (2011)

I.Usman, Z.Buthelezi, J.Carter, G.R.J.Cooper, R.W.Fearick, S.V.Fortsch, H.Fujita, Y.Kalmykov, P.von Neumann-Cosel, R.Neveling, I.Poltoratska, A.Richter, A.Shevchenko, E.Sideras-Haddad, F.D.Smit, J.Wambach

Level density of 2+ states in 40Ca from high-energy-resolution (p, p') experiments

NUCLEAR REACTIONS 40Ca(p, p'), E=200 MeV; measured E(p), I(p), double differential σ, σ(θ); deduced excitation energy, level density for 2+ states in the ISGQR region; analyzed fine structure of ISGQR. Fluctuation analysis. Comparison with backshifted Fermi gas and microscopic HF-BCS and HFB models.

doi: 10.1103/PhysRevC.84.054322
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2011VO16      J.Phys.:Conf.Ser. 312, 042026 (2011)

P.von Neumann-Cosel, M.Chernykh, H.Feldmeier, T.Neff, A.Richter

Pair decay width of the Hoyle state and carbon production in stars

NUCLEAR REACTIONS 12C(e, e'), E=73 MeV; measured Ee, Ie; deduced transition charge density for transition in from ground to the Hoyle state, formfactor at low q, pair decay widths.

doi: 10.1088/1742-6596/312/4/042026
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2010BU05      Phys.Rev. C 82, 015808 (2010)

O.Burda, P.von Neumann-Cosel, A.Richter, C.Forssen, B.A.Brown

Resonance parameters of the first 1/2+ state in 9Be and astrophysical implications

NUCLEAR REACTIONS 9Be(e, e'), E=73 MeV; measured electron spectra, σ, σ(θ); deduced parameters of the first 1/2+ resonance, widths, B(E1). R-matrix analysis. 9Be(γ, n), E=1.6-2.0 MeV; deduced averaged σ. Deduced reaction rates for 4He(nα, γ)9Be at temperatures T9=0.001 to 0.03. Comparison with shell-model calculations. Discussed implications for possible production of 12C in neutron-rich astrophysical scenarios.

doi: 10.1103/PhysRevC.82.015808
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2010CH17      Phys.Rev.Lett. 105, 022501 (2010)

M.Chernykh, H.Feldmeier, T.Neff, P.von Neumann-Cosel, A.Richter

Pair Decay Width of the Hoyle State and its Role for Stellar Carbon Production

NUCLEAR REACTIONS 12C(e, e'), E=29-78 MeV; measured reaction products; deduced transition form factors, charge density, pair decay width of the Hoyle state.

doi: 10.1103/PhysRevLett.105.022501
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2010DI05      Phys.Lett. B 685, 263 (2010)

B.Dietz, H.L.Harney, A.Richter, F.Schafer, H.A.Weidenmuller

Cross-section fluctuations in chaotic scattering

doi: 10.1016/j.physletb.2010.01.074
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2010JO06      Nucl.Phys. A842, 15 (2010)

H.T.Johansson, Yu.Aksyutina, T.Aumann, K.Boretzky, M.J.G.Borge, A.Chatillon, L.V.Chulkov, D.Cortina-Gil, U.Datta Pramanik, H.Emling, C.Forssen, H.O.U.Fynbo, H.Geissel, G.Ickert, B.Jonson, R.Kulessa, C.Langer, M.Lantz, T.LeBleis, K.Mahata, M.Meister, G.Munzenberg, T.Nilsson, G.Nyman, R.Palit, S.Paschalis, W.Prokopowicz, R.Reifarth, A.Richter, K.Riisager, G.Schrieder, H.Simon, K.Summerer, O.Tengblad, H.Weick, M.V.Zhukov

The unbound isotopes 9, 10He

NUCLEAR REACTIONS 1H(11Li, 2p), (11Li, n2p), E=280 MeV/nucleon; measured fragment spectra, neutron spectra, (fragment)(neutron)-coin, relative energy spectra; deduced resonance state parameters.

doi: 10.1016/j.nuclphysa.2010.04.006
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2010JO07      Nucl.Phys. A847, 66 (2010)

H.T.Johansson, Yu.Aksyutina, T.Aumann, K.Boretzky, M.J.G.Borge, A.Chatillon, L.V.Chulkov, D.Cortina-Gil, U.Datta Pramanik, H.Emling, C.Forssen, H.O.U.Fynbo, H.Geissel, G.Ickert, B.Jonson, R.Kulessa, C.Langer, M.Lantz, T.LeBleis, K.Mahata, M.Meister, G.Munzenberg, T.Nilsson, G.Nyman, R.Palit, S.Paschalis, W.Prokopowicz, R.Reifarth, A.Richter, K.Riisager, G.Schrieder, N.B.Shulgina, H.Simon, K.Summerer, O.Tengblad, H.Weick, M.V.Zhukov

Three-body correlations in the decay of 10He and 13Li

NUCLEAR REACTIONS 1H(11Li, 2n2p), E=280 MeV/nucleon; 1H(14Be, 2n2p), E=304 MeV/nucleon; measured fragment spectra, neutron spectra, (fragment)(neutron)-coin. 11Li, 14Be, 10He, 13Li; deduced energy, angular three-body correlation coefficients, reaction mechanism features including final state interactions. Comparison with three-body wave function analysis.

doi: 10.1016/j.nuclphysa.2010.07.002
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2010PE01      Phys.Rev. C 81, 014308 (2010)

I.Petermann, K.Langanke, G.Martinez-Pinedo, P.von Neumann-Cosel, F.Nowacki, A.Richter

Scales in the fine structure of the magnetic dipole resonance: A wavelet approach to the shell model

NUCLEAR STRUCTURE 50Ti, 52Cr, 54,56Fe; calculated M1 strength distributions, and power spectra using shell model and KB3G interaction. Comparison with experimental data from (e, e') reactions.

doi: 10.1103/PhysRevC.81.014308
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2010YE02      Phys.Rev. C 81, 044309 (2010)

O.Yevetska, J.Enders, M.Fritzsche, P.von Neumann-Cosel, S.Oberstedt, A.Richter, C.Romig, D.Savran, K.Sonnabend

Dipole strength in the 235U(γ, γ') reaction up to 2.8 MeV

NUCLEAR REACTIONS 235U(γ, γ') E=3.5, 4.4 MeV; measured Eγ, Iγ, γ(θ), integrated cross sections of γ rays. 235U; deduced levels, B(M1), B(E1) strengths. 232Th, 235,236,238U; systematics of M1 strength functions.

doi: 10.1103/PhysRevC.81.044309
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2010YE11      Nucl.Instrum.Methods Phys.Res. A 618, 160 (2010)

O.Yevetska, S.Watzlawik, J.Ahrens, G.D.Alkhazov, V.P.Chizhov, E.M.Maev, P.Von Neumann-Cosel, E.M.Orischin, G.E.Petrov, J.-M.Porte, A.Richter, V.V.Sarantsev, G.Schrieder, Yu.V.Smirenin

New experimental method for investigation of the nucleon polarizabilities

NUCLEAR REACTIONS 1H(γ, γ), E=32.4-51.4 MeV; measured products, Eπ, Iπ; deduced σ(θ). Data were imported from EXFOR entry M0804.

doi: 10.1016/j.nima.2010.02.091
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2009AK03      Phys.Lett. B 679, 191 (2009)

Yu.Aksyutina, H.T.Johansson, T.Aumann, K.Boretzky, M.J.G.Borge, A.Chatillon, L.V.Chulkov, D.Cortina-Gil, U.Datta Pramanik, H.Emling, C.Forssen, H.O.U.Fynbo, H.Geissel, G.Ickert, B.Jonson, R.Kulessa, C.Langer, M.Lantz, T.LeBleis, A.O.Lindahl, K.Mahata, M.Meister, G.Munzenberg, T.Nilsson, G.Nyman, R.Palit, S.Paschalis, W.Prokopowicz, R.Reifarth, A.Richter, K.Riisager, G.Schrieder, H.Simon, K.Summerer, O.Tengblad, H.Weick, M.V.Zhukov

Properties of the 7He ground state from 8He neutron knockout

NUCLEAR REACTIONS 1H(8He, np), E=240 MeV/nucleon; measured fragment spectra, neutron spectra, relative energy spectra; deduced spectroscopic factor; 12C(6He, Xn)5He, E=240 MeV/nucleon; 12C(8He, Xn)7He, E=227 MeV/nucleon; analyzed fragment spectra, neutron spectra, relative energy spectra; deduced resonance parameters using R-matrix analysis, configurations, reaction mechanism features.

doi: 10.1016/j.physletb.2009.07.044
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2009SH19      Phys.Rev. C 79, 044305 (2009)

A.Shevchenko, O.Burda, J.Carter, G.R.J.Cooper, R.W.Fearick, S.V.Fortsch, H.Fujita, Y.Fujita, Y.Kalmykov, D.Lacroix, J.J.Lawrie, P.von Neumann-Cosel, R.Neveling, V.Yu.Ponomarev, A.Richter, E.Sideras-Haddad, F.D.Smit, J.Wambach

Global investigation of the fine structure of the isoscalar giant quadrupole resonance

NUCLEAR REACTIONS 58Ni, 89Y, 90Zr, 120Sn, 142Nd, 166Er, 208Pb(p, p'), E=200 MeV; measured proton spectra, angular distributions; deduced isoscalar giant quadrupole resonance (ISGQR) and associated E2 strength functions. Wavelet analysis. Comparisons with quasiparticle-phonon model (QPM), extended time-dependent Hartree-Fock method (ETDHF), random-phase approximation (RPA) and extended theory of finite Fermi systems (ETFFS).

doi: 10.1103/PhysRevC.79.044305
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2009VO04      Phys.Rev. C 79, 059801 (2009)

P.von Neumann-Cosel, A.Richter, A.Byelikov

Comment on "138La-138Ce-136Ce nuclear cosmochronometer of the supernova neutrino process"

doi: 10.1103/PhysRevC.79.059801
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2008AK03      Phys.Lett. B 666, 430 (2008)

Yu.Aksyutina, H.T.Johansson, P.Adrich, F.Aksouh, T.Aumann, K.Boretzky, M.J.G.Borge, A.Chatillon, L.V.Chulkov, D.Cortina-Gil, U.Datta Pramanik, H.Emling, C.Forssen, H.O.U.Fynbo, H.Geissel, M.Hellstrom, G.Ickert, K.L.Jones, B.Jonson, A.Kliemkiewicz, J.V.Kratz, R.Kulessa, M.Lantz, T.LeBleis, A.O.Lindahl, K.Mahata, M.Matos, M.Meister, G.Munzenberg, T.Nilsson, G.Nyman, R.Palit, M.Pantea, S.Paschalis, W.Prokopowicz, R.Reifarth, A.Richter, K.Riisager, G.Schrieder, H.Simon, K.Summerer, O.Tengblad, W.Walus, H.Weick, M.V.Zhukov

Lithium isotopes beyond the drip line

NUCLEAR REACTIONS 1H(11Li, np), E=280 MeV/nucleon; 1H(14Be, n2p), (14Be, 2p), E=304 MeV/nucleon; measured fragment spectra, neutron spectra, (fragment)(neutron)-coin. Deduced σ(E).

doi: 10.1016/j.physletb.2008.07.093
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2008BO32      Phys.Rev. C 78, 054001 (2008)

W.U.Boeglin, H.Arenhovel, K.I.Blomqvist, R.Bohm, M.Distler, R.Edelhoff, I.Ewald, R.Florizone, J.Friedrich, R.Geiges, M.Kahrau, M.Korn, H.Kramer, K.W.Krygier, V.Kunde, A.Liesenfeld, K.Merle, R.Neuhausen, E.A.J.M.Offermann, Th.Pospischil, A.W.Richter, G.Rosner, P.Sauer, S.Schardt, A.Serdarevic, A.Wagner, Th.Walcher, S.Wolf, J.Jourdan, I.Sick, M.Kuss, M.Potokar, A.Rokavec, B.Vodenik, S.Sirca

fLT response function of 2H(e, e'p)n at Q2=0.33 GeV/c)2

NUCLEAR REACTIONS 2H(e, e'p), E=855.11 MeV; measured σ, missing momentum, kinematic variables; deduced interference response function. Comparison with Coupled Channels Calculations.

doi: 10.1103/PhysRevC.78.054001
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2008RY01      Phys.Rev.Lett. 100, 172501 (2008)

N.Ryezayeva, H.Arenhovel, O.Burda, A.Byelikov, M.Chernykh, J.Enders, H.W.Griesshammer, Y.Kalmykov, P.von Neumann-Cosel, B.Ozel, I.Poltoratska, I.Pysmenetska, C.Rangacharyulu, S.Rathi, A.Richter, G.Schrieder, A.Shevchenko, O.Yevetska

Measurement of the Reaction 2H(e, e') at 180 degrees Close to the Deuteron Breakup Threshold

NUCLEAR REACTIONS 2H(e, e'), E=27.8, 74.0 MeV; measured inclusive elastic cross sections; deduced deuteron breakup cross sections.

doi: 10.1103/PhysRevLett.100.172501
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2008SH07      Phys.Rev. C 77, 024302 (2008)

A.Shevchenko, J.Carter, G.R.J.Cooper, R.W.Fearick, Y.Kalmykov, P.von Neumann-Cosel, V.Yu.Ponomarev, A.Richter, I.Usman, J.Wambach

Analysis of fine structure in the nuclear continuum

NUCLEAR REACTIONS 208Pb(p, p'), E=200 MeV; analyzed excitation energies to investigate fine structure.

doi: 10.1103/PhysRevC.77.024302
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2007BE18      Phys.Lett. B 645, 128 (2007); Erratum Phys.Lett. B 671, 496 (2009)

F.Beck, D.Frekers, P.von Neumann-Cosel, A.Richter, N.Ryezayeva, I.J.Thompson

Spectroscopic factor of the 7He ground state

NUCLEAR REACTIONS 7Li(d, 2p), E=171 MeV; analysed σ(E, θ); deduced resonance width, spectroscopic factor. R-matrix analysis.

doi: 10.1016/j.physletb.2006.12.036
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2007BU23      Phys.Rev.Lett. 99, 092503 (2007)

O.Burda, N.Botha, J.Carter, R.W.Fearick, S.V.Fortsch, C.Fransen, H.Fujita, J.D.Holt, M.Kuhar, A.Lenhardt, P.von Neumann-Cosel, R.Neveling, N.Pietralla, V.Yu.Ponomarev, A.Richter, O.Scholten, E.Sideras-Haddad, F.D.Smit, J.Wambach

High-Energy-Resolution Inelastic Electron and Proton Scattering and the multiphonon Nature of Mixed-Symmetry 2+ States in 94Mo

NUCLEAR REACTIONS 94Mo(e, e'), E=70 MeV; 94Mo(p, p'), E=200 MeV; measured σ and excitation strengths. Compared results to model calculations.

doi: 10.1103/PhysRevLett.99.092503
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2007BY02      Phys.Rev.Lett. 98, 082501 (2007)

A.Byelikov, T.Adachi, H.Fujita, K.Fujita, Y.Fujita, K.Hatanaka, A.Heger, Y.Kalmykov, K.Kawase, K.Langanke, G.Martinez-Pinedo, K.Nakanishi, P.von Neumann-Cosel, R.Neveling, A.Richter, N.Sakamoto, Y.Sakemi, A.Shevchenko, Y.Shimbara, Y.Shimizu, F.D.Smit, Y.Tameshige, A.Tamii, S.E.Woosley, M.Yosoi

Gamow-Teller Strength in the Exotic Odd-Odd Nuclei 138La and 180Ta and Its Relevance for Neutrino, Nucleosynthesis

NUCLEAR REACTIONS 138Ba, 180Hf(3He, t), E=140 MeV/nucleon; measured particle spectra. 138La, 180Ta deduced Gamow-Teller strength distributions. Implications for stellar nucleosynthesis discussed.

doi: 10.1103/PhysRevLett.98.082501
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2007CH04      Phys.Rev.Lett. 98, 032501 (2007)

M.Chernykh, H.Feldmeier, T.Neff, P.von Neumann-Cosel, A.Richter

Structure of the Hoyle State in 12C

NUCLEAR REACTIONS 12C(e, e), (e, e'), E not given; analyzed σ(θ). 12C deduced excited state density, related features.

NUCLEAR STRUCTURE 12C; calculated energies, radii, transition strengths. Fermionic molecular dynamics model, α-cluster models.

doi: 10.1103/PhysRevLett.98.032501
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2007FU12      Nucl.Phys. A788, 94c (2007)

H.Fujita, N.T.Botha, O.Burda, J.Carter, R.W.Fearick, S.V.Fortsch, C.Fransen, M.Kuhar, A.Lenhardt, P.von Neumann-Cosel, R.Neveling, N.Pietralla, V.Yu.Ponomarev, A.Richter, O.Scholten, E.Sideras-Haddad, F.D.Smit, J.Wambach

One- and two-phonon mixed-symmetry states in 94Mo in high-resolution electron and proton scattering

NUCLEAR REACTIONS 94Mo(e, e'), E=70 MeV; 94Mo(p, p')E=200 MeV; measured excitation energy spectra; deduced mixed-symmetry state features. Comparison with shell model, quasiparticle phonon model and interacting boson model.

doi: 10.1016/j.nuclphysa.2007.01.053
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2007HO13      Phys.Rev. C 76, 014314 (2007)

F.Hofmann, C.Baumer, A.M.van den Berg, D.Frekers, V.M.Hannen, M.N.Harakeh, M.de Huu, Y.Kalmykov, P.von Neumann-Cosel, V.Yu.Ponomarev, S.Rakers, B.Reitz, A.Richter, K.Schweda, A.Shevchenko, J.Wambach, H.J.Wortche

Proton scattering at intermediate energies on 58Ni: How well is it understood?

NUCLEAR REACTIONS 58Ni(p, p'), E=172 MeV; measured cross sections, spin flip cross sections and spin-flip probabilities. Compared results to model calculations.

doi: 10.1103/PhysRevC.76.014314
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2007KA46      Nucl.Phys. A788, 136c (2007)

Y.Kalmykov, K.Langanke, G.Martinez-Pinedo, D.Mocelj, P.von Neumann-Cosel, I.Poltoratska, V.Yu.Ponomarev, A.Richter, A.Shevchenko, J.Wambach

Spin- and Parity-Resolved Level Densities from High-Resolution Hadron and Electron Scattering Studies of Giant Resonances

NUCLEAR REACTIONS 90Zr(3He, t), E=140 MeV/nucleon; 90Zr(e, e'), E=42.5, 66.4, 82.3 MeV; 90Zr(p, p'), E=200 MeV; analyzed excitation energy spectra. 90Zr, 90Nb deduced Gamow-Teller resonance and GQR energies and level densities. 58Ni(3He, t), (e, e'), (p, p'), E not given; analyzed excitation energy spectra. 58Ni, 58Cu deduced level densities. Discrete wavelet transform and fluctuation analysis, back-shifted Fermi gas and Hartree-Fock-BCS models.

doi: 10.1016/j.nuclphysa.2007.01.059
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2007KA58      Phys.Rev.Lett. 99, 202502 (2007)

Y.Kalmykov, C.Ozen, K.Langanke, G.Martinez-Pinedo, P.von Neumann-Cosel, A.Richter

Spin- and Parity-Resolved Level Densities from the Fine Structure of Giant Resonances

NUCLEAR REACTIONS 58Ni, 90Zr(p, p'), (e, e'), E not given; 90Zr(3He, t), E not given; analyzed cross sections. deduced level densities.

doi: 10.1103/PhysRevLett.99.202502
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2007LI37      Acta Phys.Pol. B38, 1359 (2007)

A.F.Lisetskiy, E.Caurier, K.Langanke, G.Martinez-Pinedo, P.von Neumann-Cosel, F.Nowacki, A.Richter

sd - pf Shell Model Studies of M1 Strength in Ar Isotopes

NUCLEAR STRUCTURE 36,38Ar; calculated B(M1) distribution as a function of excitation energy using the nuclear shell model.


2007LI56      Nucl.Phys. A789, 114 (2007)

A.F.Lisetskiy, E.Caurier, K.Langanke, G.Martinez-Pinedo, P.von Neumann-Cosel, F.Nowacki, A.Richter

Magnetic dipole probes of the sd and pf shell crossing in the 36, 38Ar isotopes

NUCLEAR STRUCTURE 36,38Ar; calculated level energies, J, π, and magnetic dipole strength distributions within a large scale shell model study.

doi: 10.1016/j.nuclphysa.2007.01.074
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2007OZ04      Nucl.Phys. A788, 385c (2007)

B.Ozel, J.Enders, P.von Neumann-Cosel, I.Poltoratska, A.Richter, D.Savran, S.Volz, A.Zilges

Systematics of the pygmy dipole resonance in stable tin isotopes from resonant photon scattering

NUCLEAR REACTIONS 112,120Sn(γ, γ'), E≈9-11 MeV bremsstrahlung; measured Eγ, Iγ. 112Sn deduced B(E1) strength distribution. Sn analyzed B(E1).

doi: 10.1016/j.nuclphysa.2007.01.069
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2007PO06      Phys.Rev. C 75, 054312 (2007)

L.Popescu, C.Baumer, A.M.van den Berg, D.Frekers, D.De Frenne, Y.Fujita, E.W.Grewe, P.Haefner, M.N.Harakeh, M.Hunyadi, M.A.de Huu, E.Jacobs, H.Johansson, A.Korff, A.Negret, P.von Neumann-Cosel, S.Rakers, A.Richter, N.Ryezayeva, A.Shevchenko, H.Simon, H.J.Wortche

Low-lying GT+ strength in 64Co studied via the 64Ni(d, 2He)64Co reaction

NUCLEAR REACTIONS 64Ni(d, 2p), E=171 MeV; measured σ and angular distributions. Deduced GT strength to low lying states.

doi: 10.1103/PhysRevC.75.054312
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2007RA11      Prog.Part.Nucl.Phys. 59, 358 (2007)

S.Rathi, I.Pysmenetska, P.von Neumann-Cosel, A.Richter, G.Schrieder, A.Shevchenko

Precise measurement of the proton charge radius at the S-DALINAC - a novel experimental method

doi: 10.1016/j.ppnp.2006.12.032
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2007SI24      Nucl.Phys. A791, 267 (2007)

H.Simon, M.Meister, T.Aumann, M.J.G.Borge, L.V.Chulkov, U.Datta Pramanik, Th.W.Elze, H.Emling, C.Forssen, H.Geissel, M.Hellstrom, B.Jonson, J.V.Kratz, R.Kulessa, Y.Leifels, K.Markenroth, G.Munzenberg, F.Nickel, T.Nilsson, G.Nyman, A.Richter, K.Riisager, C.Scheidenberger, G.Schrieder, O.Tengblad, M.V.Zhukov

Systematic investigation of the drip-line nuclei 11Li and 14Be and their unbound subsystems 10Li and 13Be

NUCLEAR REACTIONS C(11Li, nx), E=264 MeV/nucleon; C(14Be, nx), E=287 MeV/nucleon; measured neutron energies and yields, σ as a function of core-neutron energy. 11,10Li, 13Be deduced resonance parameters.

doi: 10.1016/j.nuclphysa.2007.04.021
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2007TA27      Nucl.Phys. A788, 53c (2007)

A.Tamii, T.Adachi, J.Carter, M.Dozono, H.Fujita, Y.Fujita, K.Hatanaka, H.Hashimoto, T.Kaneda, M.Itoh, T.Kawabata, H.Matsubara, K.Nakanishi, P.von Neumann-Cosel, H.Okamura, A.Perez, I.Poltoratska, V.Ponomarev, L.Popescu, A.Richter, B.Rubio, H.Sakaguchi, Y.Sakemi, Y.Sasamoto, Y.Shimbara, Y.Shimizu, F.D.Smit, Y.Tameshige, M.Yosoi, J.Zenihiro, K.Zimmer

Study of M1 excitations by high-resolution proton inelastic scattering experiment at forward angles

NUCLEAR REACTIONS 26Mg, 48Ca(p, p'), E=295 MeV; measured excitation energy spectrum. 12C(p, p'), E=295 MeV; calculated σ(θ). DWIA method.

doi: 10.1016/j.nuclphysa.2007.01.048
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2006JE02      Phys.Lett. B 635, 17 (2006)

H.B.Jeppesen, A.M.Moro, T.Nilsson, F.Ames, P.van den Bergh, U.C.Bergmann, G.Bollen, M.J.G.Borge, J.Cederkall, P.Van Duppen, S.Emhofer, O.Forstner, L.M.Fraile, H.O.U.Fynbo, J.Gomez-Camacho, D.Habs, R.von Hahn, G.Huber, M.Huyse, H.T.Johansson, B.Jonson, O.Kester, H.Lenske, L.Liljeby, M.Meister, G.Nyman, M.Oinonen, M.Pantea, H.Podlech, U.Ratzinger, K.Reisinger, K.G.Rensfelt, R.Repnow, K.Riisager, A.Richter, K.Rudolph, H.Scheit, A.Schempp, P.Schmidt, G.Schrieder, D.Schwalm, T.Sieber, H.Simon, O.Tengblad, E.Tengborn, M.Turrion, L.Weissman, F.Wenander, B.Wolf

Investigation of the 9Li + 2H → 8Li + t reaction at REX-ISOLDE

NUCLEAR REACTIONS 2H(9Li, 8Li), E=2.36 MeV/nucleon; measured particle spectra, σ(θ). 8Li levels deduced energies, spectroscopic factors. Comparison with optical model calculations, post-accelerated radioactive beam.

doi: 10.1016/j.physletb.2006.02.034
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2006JE09      Phys.Lett. B 642, 449 (2006)

H.B.Jeppesen, A.M.Moro, U.C.Bergmann, M.J.G.Borge, J.Cederkall, L.M.Fraile, H.O.U.Fynbo, J.Gomez-Camacho, H.T.Johansson, B.Jonson, M.Meister, T.Nilsson, G.Nyman, M.Pantea, K.Riisager, A.Richter, G.Schrieder, T.Sieber, O.Tengblad, E.Tengborn, M.Turrion, F.Wenander

Study of 10Li via the 9Li(2H, p) reaction at REX-ISOLDE

NUCLEAR REACTIONS 2H(9Li, 10Li), E=2.36 MeV/nucleon; measured proton spectra, σ(θ). 10Li deduced spectroscopic factors. Comparison with optical model calculations, post-accelerated radioactive beam.

doi: 10.1016/j.physletb.2006.09.060
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2006KA02      Phys.Rev.Lett. 96, 012502 (2006)

Y.Kalmykov, T.Adachi, G.P.A.Berg, H.Fujita, K.Fujita, Y.Fujita, K.Hatanaka, J.Kamiya, K.Nakanishi, P.von Neumann-Cosel, V.Yu.Ponomarev, A.Richter, N.Sakamoto, Y.Sakemi, A.Shevchenko, Y.Shimbara, Y.Shimizu, F.D.Smit, T.Wakasa, J.Wambach, M.Yosoi

Fine Structure of the Gamow-Teller Resonance in 90Nb and Level Density of 1+ States

NUCLEAR REACTIONS 90Zr(3He, t), E=140 MeV/nucleon; measured triton spectra. 90Nb deduced level densities, fine structure of Gamow-Teller resonance. Wavelet analysis technique.

doi: 10.1103/PhysRevLett.96.012502
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2006NE06      Phys.Rev.Lett. 97, 062502 (2006)

A.Negret, T.Adachi, B.R.Barrett, C.Baumer, A.M.van den Berg, G.P.A.Berg, P.von Brentano, D.Frekers, D.De Frenne, H.Fujita, K.Fujita, Y.Fujita, E.-W.Grewe, P.Haefner, M.N.Harakeh, K.Hatanaka, K.Heyde, M.Hunyadi, E.Jacobs, Y.Kalmykov, A.Korff, K.Nakanishi, P.Navratil, P.von Neumann-Cosel, L.Popescu, S.Rakers, A.Richter, N.Ryezayeva, Y.Sakemi, A.Shevchenko, Y.Shimbara, Y.Shimizu, Y.Tameshige, A.Tamii, M.Uchida, J.Vary, H.J.Wortche, M.Yosoi, L.Zamick

Gamow-Teller Strengths in the A = 14 Multiplet: A Challenge to the Shell Model

NUCLEAR REACTIONS 14N(d, 2p), E=175 MeV; 14N(3He, t), E=420 MeV; measured excitation energy spectra, σ(E, θ); deduced Gamow-Teller strength distributions. Comparison with no-core shell model predictions.

doi: 10.1103/PhysRevLett.97.062502
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2006RI14      Phys.Scr. T125, 167 (2006)

A.Richter

On some spectral properties of billiards and nuclei - similarities and differences

NUCLEAR STRUCTURE 138Ba, 140Ce, 142Nd, 144Sm; analyzed B(E1) distributions, pygmy dipole resonance; deduced regular and chaotic features.

doi: 10.1088/0031-8949/2006/T125/038
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2006RO13      Phys.Rev. C 73, 037306 (2006)

S.J.Q.Robinson, A.Escuderos, L.Zamick, P.von Neumann-Cosel, A.Richter, R.W.Fearick

Shell-model test of the rotational-model relation between static quadrupole moments Q(2+1), B(E2)'s, and orbital M1 transitions

NUCLEAR STRUCTURE 44,46,48Ti, 48,50Cr; calculated quadrupole moments, B(E2), B(M1). Comparison of shell model and collective model results.

doi: 10.1103/PhysRevC.73.037306
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2006RY03      Phys.Lett. B 639, 623 (2006)

N.Ryezayeva, C.Baumer, A.M.van den Berg, L.V.Chulkov, D.Frekers, D.De Frenne, E.-W.Grewe, P.Haefner, E.Jacobs, H.Johanson, Y.Kalmykov, A.Negret, P.von Neumann-Cosel, L.Popescu, S.Rakers, A.Richter, G.Schrieder, A.Shevchenko, H.Simon, H.J.Wortche

Search for a low-energy resonance in 7He with the 7Li(d, 2He) reaction

NUCLEAR REACTIONS 6,7Li(d, 2p), E=171 MeV; analysed σ(θ, E'); deduced B(GT). DWBA analysis.

doi: 10.1016/j.physletb.2006.06.081
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2005BA14      Phys.Rev. C 71, 024603 (2005); Erratum Phys.Rev. C 71, 029903 (2005)

C.Baumer, A.M.van den Berg, B.Davids, D.Frekers, D.De Frenne, E.-W.Grewe, P.Haefner, M.N.Harakeh, F.Hofmann, S.Hollstein, M.Hunyadi, M.A.de Huu, E.Jacobs, B.C.Junk, A.Korff, K.Langanke, G.Martinez-Pinedo, A.Negret, P.von Neumann-Cosel, L.Popescu, S.Rakers, A.Richter, H.J.Wortche

Determination of the Gamow-Teller strength distribution from the odd-odd nucleus 50V measured through 50V(d, 2He)50Ti and astrophysical implications

NUCLEAR REACTIONS 50V(d, 2p), E=171 MeV; measured Ep, pp-coin, σ(E, θ). 50V deduced Gamow-Teller strength distribution. Comparison with model predictions.

doi: 10.1103/PhysRevC.71.024603
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2005BA43      Phys.Rev. C 71, 044003 (2005)

C.Baumer, D.Frekers, E.-W.Grewe, P.Haefner, S.Hollstein, B.C.Junk, A.Korff, S.Rakers, R.Schmidt, A.M.van den Berg, B.Davids, M.N.Harakeh, M.Hunyadi, M.A.de Huu, H.J.Wortche, N.Blasi, D.De Frenne, E.Jacobs, A.Negret, L.Popescu, R.De Leo, F.Hofmann, P.von Neumann-Cosel, A.Richter

Measurement of the 2H(d, 2He)2n reaction at Ed = 171 MeV and implications for the neutron-neutron scattering length

NUCLEAR REACTIONS 2H(d, 2p), E=171 MeV; measured Ep, pp-coin, σ(θ); deduced neutron-neutron scattering length.

doi: 10.1103/PhysRevC.71.044003
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2005CH49      Nucl.Phys. A759, 23 (2005)

L.V.Chulkov, H.Simon, I.J.Thompson, T.Aumann, M.J.G.Borge, Th.W.Elze, H.Emling, H.Geissel, L.V.Grigorenko, M.Hellstrom, B.Jonson, J.W.V.Kratz, R.Kulessa, K.Markenroth, M.Meister, G.Munzenberg, F.Nickel, T.Nilsson, G.Nyman, V.Pribora, A.Richter, K.Riisager, C.Scheidenberger, G.Schrieder, O.Tengblad, M.V.Zhukov

Three-body correlations in electromagnetic dissociation of Borromean nuclei: The 6He case

NUCLEAR REACTIONS Pb(6He, 2nα), E=240 MeV/nucleon; measured Eα, En, three-body energy and angular correlations; deduced role of final state interactions, other reaction mechanism features. 6He deduced possible resonance.

doi: 10.1016/j.nuclphysa.2005.05.001
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2005CH64      Astrophys.J. 633, L61 (2005)

M.Chernykh, J.Enders, P.von Neumann-Cosel, C.Rangacharyulu, A.Richter

The Role of the 96 keV Level in the 19O(β-)19F Process at Stellar Temperatures

RADIOACTIVITY 19O(β-); calculated β-decay rate for ground and excited state, temperature dependence in stellar environments.

NUCLEAR STRUCTURE 19F; calculated transitions B(M1).

doi: 10.1086/498263
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2005EN01      Phys.Rev. C 71, 014306 (2005)

J.Enders, P.von Neumann-Cosel, C.Rangacharyulu, A.Richter

Parameter-free description of orbital magnetic dipole strength

NUCLEAR STRUCTURE 46,48Ti, 50Cr, 56Fe, 66Zn, 92Zr, 94Mo, 108,112,114Cd, 122,124,126,130Te, 134,136Ba, 142Ce, 144,146,148,150Nd, 148,150,152,154Sm, 154,156,158,160Gd, 160,162,164Dy, 166,168,170Er, 172,174,176Yb, 176,178,180Hf, 182,184,186W, 190,192Os, 194,196Pt, 232Th, 236,238U; analyzed scissors mode excitation energies, deformation parameters, magnetic dipole strength distributions. Sum-rule approach.

doi: 10.1103/PhysRevC.71.014306
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2005HO10      Phys.Lett. B 612, 165 (2005)

F.Hofmann, C.Baumer, A.M.van den Berg, D.Frekers, V.M.Hannen, M.N.Harakeh, M.A.de Huu, Y.Kalmykov, P.von Neumann-Cosel, V.Yu.Ponomarev, S.Rakers, B.Reitz, A.Richter, A.Shevchenko, K.Schweda, J.Wambach, H.J.Wortche

Polarized proton scattering on 58Ni at small momentum transfer: A test of the microscopic optical model and effective interactions

NUCLEAR REACTIONS 58Ni(polarized p, p'), (polarized p, p), E=172 MeV; measured elastic and inelastic σ(E, θ), analyzing powers. Comparison with model predictions.

doi: 10.1016/j.physletb.2005.03.020
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2005LI14      Phys.Rev. C 71, 044318 (2005)

T.C.Li, N.Pietralla, C.Fransen, H.von Garrel, U.Kneissl, C.Kohstall, A.Linnemann, H.H.Pitz, G.Rainovski, A.Richter, M.Scheck, F.Stedile, P.von Brentano, P.von Neumann-Cosel, V.Werner

One-phonon 2+1, ms mixed-symmetry state of 148Sm observed in nuclear resonance fluorescence

NUCLEAR REACTIONS 148Sm(γ, γ'), E=3.2 MeV bremsstrahlung; measured Eγ, Iγ. 148Sm deduced levels, J, π, B(M1), B(E1), B(E2), mixed-symmetry state. Nuclear resonance fluorescence, interacting boson model.

doi: 10.1103/PhysRevC.71.044318
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2005NI09      Nucl.Phys. A752, 273c (2005)

O.Niedermaier, H.Scheit, V.Bildstein, H.Boie, J.Fitting, R.von Hahn, F.Kock, M.Lauer, U.K.Pal, H.Podlech, R.Repnow, D.Schwalm, C.Alvarez, F.Ames, G.Bollen, S.Emhofer, D.Habs, O.Kester, R.Lutter, K.Rudolph, M.Pasini, P.G.Thirolf, B.H.Wolf, J.Eberth, G.Gersch, H.Hess, P.Reiter, O.Thelen, N.Warr, D.Weisshaar, F.Aksouh, P.Van den Bergh, P.Van Duppen, M.Huyse, O.Ivanov, P.Mayet, J.Van de Walle, J.Aysto, P.A.Butler, J.Cederkall, P.Delahaye, H.O.U.Fynbo, L.M.Fraile, O.Forstner, S.Franchoo, U.Koster, T.Nilsson, M.Oinonen, T.Sieber, F.Wenander, M.Pantea, A.Richter, G.Schrieder, H.Simon, T.Behrens, R.Gernhauser, T.Kroll, R.Krucken, M.Munch, T.Davinson, J.Gerl, G.Huber, A.Hurst, J.Iwanicki, B.Jonson, P.Lieb, L.Liljeby, A.Schempp, A.Scherillo, P.Schmidt, G.Walter

The neutron-rich Mg isotopes: first results from MINIBALL at REX-ISOLDE

NUCLEAR REACTIONS Ni(30Mg, 30Mg'), E=2.25 MeV/nucleon; measured Eγ, Iγ, (particle)γ-coin following projectile Coulomb excitation. 30Mg deduced transition, B(E2).

doi: 10.1016/j.nuclphysa.2005.02.071
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2005NI11      Phys.Rev.Lett. 94, 172501 (2005)

O.Niedermaier, H.Scheit, V.Bildstein, H.Boie, J.Fitting, R.von Hahn, F.Kock, M.Lauer, U.K.Pal, H.Podlech, R.Repnow, D.Schwalm, C.Alvarez, F.Ames, G.Bollen, S.Emhofer, D.Habs, O.Kester, R.Lutter, K.Rudolph, M.Pasini, P.G.Thirolf, B.H.Wolf, J.Eberth, G.Gersch, H.Hess, P.Reiter, O.Thelen, N.Warr, D.Weisshaar, F.Aksouh, P.Van den Bergh, P.Van Duppen, M.Huyse, O.Ivanov, P.Mayet, J.Van de Walle, J.Aysto, P.A.Butler, J.Cederkall, P.Delahaye, H.O.U.Fynbo, L.M.Fraile, O.Forstner, S.Franchoo, U.Koster, T.Nilsson, M.Oinonen, T.Sieber, F.Wenander, M.Pantea, A.Richter, G.Schrieder, H.Simon, T.Behrens, R.Gernhauser, T.Kroll, R.Krucken, M.Munch, T.Davinson, J.Gerl, G.Huber, A.Hurst, J.Iwanicki, B.Jonson, P.Lieb, L.Liljeby, A.Schempp, A.Scherillo, P.Schmidt, G.Walter

"Safe" Coulomb Excitation of 30Mg

NUCLEAR REACTIONS Ni(30Mg, 30Mg'), E=2.25 MeV/nucleon; measured Eγ, Iγ, (particle)γ-coin following projectile Coulomb excitation. 30Mg transition deduced B(E2).

doi: 10.1103/PhysRevLett.94.172501
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2005RI04      Nucl.Phys. A751, 3c (2005)

A.Richter

Trends in nuclear physics

doi: 10.1016/j.nuclphysa.2005.02.003
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2005RI07      Prog.Part.Nucl.Phys. 55, 387 (2005)

A.Richter

Giant resonances -- experiments at highest resolution, wavelets and scales

NUCLEAR REACTIONS 58Ni, 89Y, 90Zr, 120Sn, 208Pb(p, p'), E=200 MeV; analyzed proton spectra; 90Zr(3He, t), E=140 MeV/nucleon; analyzed triton spectrum; deduced giant resonance features. Wavelet analysis.

doi: 10.1016/j.ppnp.2005.01.002
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2005SC27      Eur.Phys.J. A 25, Supplement 1, 397 (2005)

H.Scheit, O.Niedermaier, V.Bildstein, H.Boie, J.Fitting, R.von Hahn, F.Kock, M.Lauer, U.K.Pal, H.Podlech, R.Repnow, D.Schwalm, C.Alvarez, F.Ames, G.Bollen, S.Emhofer, D.Habs, O.Kester, R.Lutter, K.Rudolph, M.Pasini, P.G.Thirolf, B.H.Wolf, J.Eberth, G.Gersch, H.Hess, P.Reiter, O.Thelen, N.Warr, D.Weisshaar, F.Aksouh, P.Van den Bergh, P.Van Duppen, M.Huyse, O.Ivanov, P.Mayet, J.Van de Walle, J.Aysto, P.A.Butler, J.Cederkall, P.Delahaye, H.O.U.Fynbo, L.M.Fraile, O.Forstner, S.Franchoo, U.Koster, T.Nilsson, M.Oinonen, T.Sieber, F.Wenander, M.Pantea, A.Richter, G.Schrieder, H.Simon, T.Behrens, R.Gernhauser, T.Kroll, R.Krucken, M.Munch, T.Davinson, J.Gerl, G.Huber, A.Hurst, J.Iwanicki, B.Jonson, P.Lieb, L.Liljeby, A.Schempp, A.Scherillo, P.Schmidt, G.Walter

Coulomb excitation of neutron-rich beams at REX-ISOLDE

NUCLEAR REACTIONS Ni(30Mg, 30Mg'), E=2.2 MeV/nucleon; measured Eγ, Iγ, (particle)γ-coin following projectile Coulomb excitation.2Hmeasured Eγ, Iγ, γγ-, (particle)γ-coin. 30Mg deduced transitions B(E2). 31Mg deduced transitions. Miniball array.

doi: 10.1140/epjad/i2005-06-165-2
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2004AB18      Phys.Lett. B 598, 42 (2004)

S.Aberg, A.Heine, G.E.Mitchell, A.Richter

Isospin symmetry breaking in 93Tc and statistical properties

NUCLEAR STRUCTURE 93Tc; analyzed proton resonance energy, widths, isospin mixing effects. Random matrix theory.

doi: 10.1016/j.physletb.2004.07.051
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2004AN27      Eur.Phys.J. A 22, 449 (2004)

K.A.Aniol, M.B.Epstein, E.Gama, D.J.Margaziotis, W.Bertozzi, J.P.Chen, D.Dale, R.E.J.Florizone, S.Gilad, A.J.Sarty, J.A.Templon, S.P.Van Verst, J.Zhao, Z.-L.Zhou, P.Bartsch, W.U.Boeglin, R.Boehm, M.O.Distler, I.Ewald, J.M.Friedrich, J.M.Friedrich, R.Geiges, P.Jennewein, M.Kahrau, K.W.Krygier, A.Liesenfeld, H.Merkel, K.Merle, U.Muller, R.Neuhausen, E.A.J.M.Offermann, Th.Pospischil, G.Rosner, H.Schmieden, A.Wagner, Th.Walcher, M.Kuss, A.Richter, G.Schrieder, K.Bohinc, M.Potokar, S.Sirca, J.M.Udias, J.R.Vignote, R.Schiavilla

Measurement of RLT and ATL in the 4He(e, e'p)3H reaction at pmiss of 130-300 MeV/c

NUCLEAR REACTIONS 4He(e, e'p), E=675, 855 MeV; measured σ(E, θ), transverse-longitudinal asymmetry, response function. Comparison with model predictions.

doi: 10.1140/epja/i2004-10040-x
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