NSR Query Results
Output year order : Descending NSR database version of April 27, 2024. Search: Author = K.Sonnabend Found 63 matches. 2023ER01 Eur.Phys.J. A 59, 69 (2023) P.Erbacher, T.Heftrich, A.Endres, J.Glorius, L.Netterdon, D.Just, K.Gobel, M.Krticka, R.Reifarth, K.Sonnabend, B.Thomas, M.Weigand, A.Zilges Measurement of total and partial cross sections of the 90Zr(p, γ)91Nb reaction with in-beam γ-ray spectroscopy NUCLEAR REACTIONS 90Zr(p, γ), E=2.71-5.1 MeV; measured reaction products, Eγ, Iγ; deduced σ. Comparison with available data. HORUS (High efficiency Observatory for γ-Ray Unique Spectroscopy) detector array at the University of Cologne, Germany.
doi: 10.1140/epja/s10050-023-00984-y
2021GO04 Phys.Rev. C 103, 025802 (2021) K.Gobel, C.Beinrucker, B.Bruckner, P.Erbacher, S.Fiebiger, M.Fonseca, M.Heftrich, T.Heftrich, F.Kappeler, A.Krasa, D.Kurtulgil, C.Lederer-Woods, R.Plag, A.Plompen, R.Reifarth, S.Schmidt, K.Sonnabend, M.Weigand Neutron activation of 69Ga and 71Ga at kBT ≈ 25 keV NUCLEAR REACTIONS 69,71Ga(n, γ), E<110 keV, centered at 25 keV, [neutrons from 7Li(p, n), E=1512 keV at the 7 MV Van de Graaff accelerator of EC-JRC, Geel]; measured Eγ, Iγ, natural Ga target, cross sections by activation method; deduced simulated neutron energy distribution, spectrum-averaged σ(E), and σ(E) relative to σ(E) for 197Au. Comparison with results in evaluated in KADoNiS v0.3 and ENDF/B-VII.1 libraries. Relevance to production of gallium in the weak s process in massive stars.
doi: 10.1103/PhysRevC.103.025802
2021MA62 Phys.Lett. B 820, 136569 (2021) K.R.Mashtakov, V.Yu.Ponomarev, M.Scheck, S.W.Finch, J.Isaak, M.Zweidinger, O.Agar, C.Bathia, T.Beck, J.Beller, M.Bowry, R.Chapman, M.M.R.Chishti, U.Friman-Gayer, L.P.Gaffney, P.E.Garrett, E.T.Gregor, J.M.Keatings, U.Koster, B.Loher, A.D.MacLean, D.O'Donnell, H.Pai, N.Pietralla, G.Rainovski, M.Ramdhane, C.Romig, G.Rusev, D.Savran, G.S.Simpson, J.Sinclair, K.Sonnabend, P.Spagnoletti, A.P.Tonchev, W.Tornow Structure of high-lying levels populated in the 96Y → 96Zr β decay RADIOACTIVITY 96Y(β-) [from 235U(n, F), E thermal]; measured decay products, Eγ, Iγ, Eβ, Iβ; deduced γ-ray energies, B(E1), branching ratios, Gamow-Teller transition probabilities B(GT). Quasiparticle Phonon Model. Institut Laue Langevin (ILL), LOHENGRIN separator.
doi: 10.1016/j.physletb.2021.136569
2020WI09 Phys.Rev. C 102, 044327 (2020) J.Wilhelmy, M.Muscher, G.Rusev, R.Schwengner, R.Beyer, M.Bhike, P.Erbacher, F.Fiedler, U.Friman-Gayer, J.Glorius, R.Greifenhagen, S.Hammer, T.Hensel, J.Isaak, A.R.Junghans, Krishichayan, B.Loher, S.E.Muller, N.Pietralla, S.Reinicke, D.Savran, P.Scholz, K.Sonnabend, T.Szucs, M.Tamkas, W.Tornow, S.Turkat, A.Wagner, A.Zilges Dipole response of 87Rb and its impact on the 86Rb (n, γ) 87Rb cross section NUCLEAR REACTIONS 87Rb(γ, γ'), E=8.2, 13.2 MeV bremsstrahlung beam; measured Eγ, Iγ, γ(θ) using four HPGe detectors at the γ-ELBE facility in Dresden. 87Rb(polarized γ, γ'), E=5.10, 5.30, 5.50, 5.75, 6.00, 6.25, 6.50, 6.75, 7.00, 7.25, 7.50, 7.80, 8.10, 8.40, 8.70, 9.00, 9.30, 9.60 MeV; measured Eγ, Iγ, azimuthal asymmetry using four LaBr3:Ce scintillators and four HPGe detectors at the HIγS facility of TUNL; deduced energy-integrated σ(excitation energy), γ-ray sum spectra, photoabsorption σ(E), E1-photon strength functions (PSFs), nuclear level densities (NLDs), Thomas-Reiche-Kuhn (TRK) sum rule. Comparison with QRPA calculations for PSFs, and microscopic Hartree-Fock-Bogolyubov calculations with Skyrme and Gogny forces for NLDs. 87Rb; deduced 256 discrete levels from 845 to 10005 keV, J, π, gΓ02/Γ, γ-ray branching ratios for selected levels, as listed in supplemental material. 86Rb(n, γ), kT=5-100 keV; deduced Maxwellian cross sections (MACSs) for different PSF and NLD inputs, and compared to data in KADoNiS database.
doi: 10.1103/PhysRevC.102.044327
2017FI05 J.Phys.(London) G44, 075101 (2017) S.Fiebiger, Z.Slavkovska, U.Giesen, K.Gobel, T.Heftrich, A.Heiske, R.Reifarth, S.Schmidt, K.Sonnabend, B.Thomas, M.Weigand Alpha-induced reactions on selenium between 11 and 15 MeV NUCLEAR REACTIONS Se(α, X)77Kr/79Kr/85Kr/77Br, E=11-15 MeV; measured reaction products, Eγ, Iγ; deduced thick target yields, σ. Comparison with TALYS-1.6 calculations.
doi: 10.1088/1361-6471/aa7198
2017OZ01 Phys.Rev. C 96, 045805 (2017) N.Ozkan, R.T.Guray, C.Yalcin, W.P.Tan, A.Aprahamian, M.Beard, R.J.deBoer, S.Almaraz-Calderon, S.Falahat, J.Gorres, Q.Li, A.Sauerwein, K.Sonnabend, M.Wiescher, Zs.Fulop, Gy.Gyurky, E.Somorjai, J.Greene Proton capture reaction cross section measurements on 162Er as a probe of statistical model calculations NUCLEAR REACTIONS 162Er(p, γ)163Tm, 162Er(p, n)162Tm, E=4.0-9.0 MeV in steps of 0.5 MeV; measured reaction products, Eγ, Iγ, σ(E) by activation method using the FN tandem accelerator at the University of Notre Dame; deduced S factors. Comparison with Hauser Feshbach (HF) statistical model calculations using NON-SMOKER and TALYS codes.
doi: 10.1103/PhysRevC.96.045805
2017WE02 Phys.Rev. C 95, 015808 (2017) M.Weigand, C.Beinrucker, A.Couture, S.Fiebiger, M.Fonseca, K.Gobel, M.Heftrich, T.Heftrich, M.Jandel, F.Kappeler, A.Krasa, C.Lederer, H.Y.Lee, R.Plag, A.Plompen, R.Reifarth, S.Schmidt, K.Sonnabend, J.L.Ullmann 63Cu (n, γ) cross section measured via 25 keV activation and time of flight NUCLEAR REACTIONS 63Cu(n, γ), E=75 eV to 500 keV; measured Eγ, Iγ, time of flight, σ(E) by activation with a quasistellar neutron spectrum at JRC-Geel, and the energy dependence of the cross section measured with an isotopically enriched 63Cu sample placed in the center of the DANCE detector array at LANSCE-LANL facility; deduced Maxwellian-averaged cross sections for the whole temperature range relevant for different scenarios of the s-process nucleosynthesis. Comparison with previous experimental measurements and with evaluated cross sections from TENDL-2015.
doi: 10.1103/PhysRevC.95.015808
2016KO01 At.Data Nucl.Data Tables 108, 1 (2016) A.Koloczek, B.Thomas, J.Glorius, R.Plag, M.Pignatari, R.Reifarth, C.Ritter, S.Schmidt, K.Sonnabend Sensitivity study for s process nucleosynthesis in AGB stars COMPILATION 13C, 80,82,83,84,86Kr; analyzed reaction rates in the main component of the s process; deduced 22 rates, which have the highest impact on the s-process abundances in AGB stars.
doi: 10.1016/j.adt.2015.12.001
2016SP01 Phys.Lett. B 752, 102 (2016) M.Spieker, N.Tsoneva, V.Derya, J.Endres, D.Savran, M.N.Harakeh, S.Harissopulos, R.-D.Herzberg, A.Lagoyannis, H.Lenske, N.Pietralla, L.Popescu, M.Scheck, F.Schluter, K.Sonnabend, V.I.Stoica, H.J.Wortche, A.Zilges The pygmy quadrupole resonance and neutron-skin modes in 124Sn NUCLEAR REACTIONS 124Sn(α, α'), E=34 MeV/nucleon; measured reaction products, Eγ, Iγ; deduced σ(θ), B(E2), pygmy quadrupole resonance. Comparison with quasiparticle random-phase approximation calculations.
doi: 10.1016/j.physletb.2015.11.004
2015HE18 Phys.Rev. C 92, 015806 (2015) T.Heftrich, M.Bichler, R.Dressler, K.Eberhardt, A.Endres, J.Glorius, K.Gobel, G.Hampel, M.Heftrich, F.Kappeler, C.Lederer, M.Mikorski, R.Plag, R.Reifarth, C.Stieghorst, S.Schmidt, D.Schumann, Z.Slavkovska, K.Sonnabend, A.Wallner, M.Weigand, N.Wiehl, S.Zauner Thermal neutron capture cross section of the radioactive isotope 60Fe NUCLEAR REACTIONS 60Fe(n, γ), E=thermal and epithermal; measured Eγ, Iγ, capture σ, resonance integral at Mainz TRIGA research reactor facility; deduced Maxwellian averaged cross section for kT=0.005 eV to 1 MeV, negligible s-wave part of the direct capture in the astrophysical regime of kT=10-100 keV. Comparison with evaluated cross sections in TENDL-2014 library.
doi: 10.1103/PhysRevC.92.015806
2015ME07 Phys.Rev. C 92, 035803 (2015) B.Mei, T.Aumann, S.Bishop, K.Blaum, K.Boretzky, F.Bosch, C.Brandau, H.Brauning, T.Davinson, I.Dillmann, C.Dimopoulou, O.Ershova, Z.Fulop, H.Geissel, J.Glorius, G.Gyurky, M.Heil, F.Kappeler, A.Kelic-Heil, C.Kozhuharov, C.Langer, T.Le Bleis, Y.Litvinov, G.Lotay, J.Marganiec, G.Munzenberg, F.Nolden, N.Petridis, R.Plag, U.Popp, G.Rastrepina, R.Reifarth, B.Riese, C.Rigollet, C.Scheidenberger, H.Simon, K.Sonnabend, M.Steck, T.Stohlker, T.Szucs, K.Summerer, G.Weber, H.Weick, D.Winters, N.Winters, P.Woods, Q.Zhong First measurement of the 96Ru(p, γ)97Rh cross section for the p process with a storage ring NUCLEAR REACTIONS 1H(96Ru, γ)97Rh, E=9, 10, 11 MeV/nucleon; measured particle spectra in different charge states, x-ray and γ spectra, σ(E) using stored heavy ions in storage ring ESR at GSI; deduced astrophysical S factors and stellar reaction rates over a range of T9=0.5-19. Comparison with predictions from standard NON-SMOKER code and TALYS-1.4 code using different γ-ray strength functions from HFB, Brink-Axel Lorentzian (BAL), and Kopecky-Uhl, and different density models of constant temperature (CT), BSFG, generalized superfluid (GS), and Hartree-Fock-Bogolyubov (HFB). Recommended REACLIB parameters for the reactivity of 96Ru(p, γ)97Rh, and 97Rh(γ, p)96Ru reactions. Relevance to p-process network calculations.
doi: 10.1103/PhysRevC.92.035803
2015OR03 Nucl.Phys. A940, 194 (2015) A.Ornelas, G.G.Kiss, P.Mohr, D.Galaviz, Zs.Fulop, Gy.Gyurky, Z.Mate, T.Rauscher, E.Somorjai, K.Sonnabend, A.Zilges The 106Cd(α, α)106Cd elastic scattering in a wide energy range for γ process studies NUCLEAR REACTIONS 106Cd(α, α), E=16.1, 17.7, 19.6 MeV; measured Eα, Iα(θ). 106Cd(α, α), E(cm)=15.6-26.0 MeV; calculated σ(θ) using ATOMKI-V1 optical potential; deduced optical model parameters from fit to available data. Potentials compared with those obtained by others using different potentials. 106Cd(α, n), (α, p), (α, γ), E(cm)=7-13 MeV; calculated S-factor using different potentials. Compared with data.
doi: 10.1016/j.nuclphysa.2015.04.008
2015RO09 Phys.Lett. B 744, 369 (2015) C.Romig, D.Savran, J.Beller, J.Birkhan, A.Endres, M.Fritzsche, J.Glorius, J.Isaak, N.Pietralla, M.Scheck, L.Schnorrenberger, K.Sonnabend, M.Zweidinger Direct determination of ground-state transition widths of low-lying dipole states in 140Ce with the self-absorption technique NUCLEAR REACTIONS 140Ce(γ, γ'), E<8 MeV; measured reaction products, Eγ, Iγ; deduced ground state transition widths, branching ratios. Comparison with available data.
doi: 10.1016/j.physletb.2015.04.013
2014BE09 Acta Phys.Pol. B45, 193 (2014) N.Benouaret, J.Beller, J.Isaak, J.H.Kelley, H.Pai, N.Pietralla, V.Yu.Ponomarev, R.Raut, C.Romig, G.Rusev, D.Savran, M.Scheck, L.Schnorrenberger, K.Sonnabend, A.P.Tonchev, W.Tornow, H.R.Weller, M.Zweidinger Photoexcitation of the Stable Tl Isotopes Below the Neutron Separation Energy NUCLEAR REACTIONS 203,205Tl(γ, γ'), E<7.5 MeV; measured reaction products, Eγ, Iγ; deduced dipole strength distribution. Comparison with available data.
doi: 10.5506/APhysPolB.45.193
2014GL02 Phys.Rev. C 89, 065808 (2014) J.Glorius, K.Sonnabend, J.Gorres, D.Robertson, M.Knorzer, A.Kontos, T.Rauscher, R.Reifarth, A.Sauerwein, E.Stech, W.Tan, T.Thomas, M.Wiescher Experimental cross sections of 165Ho(α, n)168Tm and 166Er(α, n)169Yb for optical potential studies relevant for the astrophysical γ process NUCLEAR REACTIONS 165Ho, 166Er(α, n), E=10.5-15 MeV; measured Eγ, Iγ, σ(E) by activation technique using Tandem accelerator at NSL-Notre Dame. Comparison with predictions from Hauser-Feshbach calculations using TALYS and SMARAGD codes, and with previous experimental results; analyzed α-nucleus optical potential for simulations of astrophysical γ process.
doi: 10.1103/PhysRevC.89.065808
2014NE13 Phys.Rev. C 90, 035806 (2014) L.Netterdon, A.Endres, G.G.Kiss, J.Mayer, T.Rauscher, P.Scholz, K.Sonnabend, Zs.Torok, A.Zilges Cross-section measurement of the 130Ba(p, γ)131La reaction for γ-process nucleosynthesis NUCLEAR REACTIONS 130Ba(p, γ), E(cm)=3.57-4.96 MeV; measured Eγ, Iγ, σ(E) using activation method at the Institute for Nuclear Physics, Cologne. Comparison with Hauser-Feshbach calculations using TALYS and SMARAGD statistical model codes with different proton+nucleus optical model potentials; deduced stellar reaction rates and compared with results from NONSMOKER code.
doi: 10.1103/PhysRevC.90.035806
2014SA20 Phys.Rev. C 89, 035803 (2014) A.Sauerwein, K.Sonnabend, M.Fritzsche, J.Glorius, E.Kwan, N.Pietralla, C.Romig, G.Rusev, D.Savran, L.Schnorrenberger, A.P.Tonchev, W.Tornow, H.R.Weller Determination of the 142Ce(γ, n) cross section using quasi-monoenergetic Compton backscattered γ rays NUCLEAR REACTIONS 142Ce(polarized γ, n), E=7.6=9.7 MeV; measured Eγ, Iγ, σ(E) at HIγS-TUNL facility. Activation method. Comparison with Hauser-Feshbach calculations using different γ-ray strength functions, and with predictions of Hartree-Fock-BCS model. Relevance to s-process branching at 141Ce, and elemental abundance.
doi: 10.1103/PhysRevC.89.035803
2013BE11 Phys.Rev. C 87, 045805 (2013) A.Best, M.Beard, J.Gorres, M.Couder, R.deBoer, S.Falahat, R.T.Guray, A.Kontos, K.-L.Kratz, P.J.LeBlanc, Q.Li, S.O'Brien, N.Ozkan, M.Pignatari, K.Sonnabend, R.Talwar, W.Tan, E.Uberseder, M.Wiescher Measurement of the reaction 17O(α, n)20Ne and its impact on the s process in massive stars NUCLEAR REACTIONS 17O(α, n), E=800-2300 keV; measured Eγ, Iγ, E(n), I(n), yields as function of incident Eα for (α, n0) and (α, n1) channels; deduced R-matrix parameters, S factors, reaction rates. 21Ne; deduced levels, resonances, J, π, width, resonance strengths. R-matrix analyses. 17O(α, n), (α, γ), E at 0.1 to 10 GK; comparison of experimental and theoretical (NACRE, CF88/1000) reaction rates. Hauser-Feshbach theory. Astrophysical implications for the s-process, and elemental abundance.
doi: 10.1103/PhysRevC.87.045805
2013BE12 Phys.Rev. C 87, 045806 (2013) A.Best, S.Falahat, J.Gorres, M.Couder, R.deBoer, R.T.Guray, A.Kontos, K.-L.Kratz, P.J.LeBlanc, Q.Li, S.O'Brien, N.Ozkan, K.Sonnabend, R.Talwar, E.Uberseder, M.Wiescher Measurement of the reaction 18O(α, n)21Ne NUCLEAR REACTIONS 18O(α, n), E=851-2300 keV; measured Eγ, Iγ, E(n), I(n), yields as function of incident Eα for (α, n0) and (α, n1) channels; deduced R-matrix parameters, S factors, reaction rates. 22Ne; deduced levels, resonances, J, π, width, resonance strengths. R-matrix analyses. 18O(α, n), (α, γ), E at 0.1 to 10 GK; comparison of experimental and theoretical (NACRE, CF88) reaction rates. Hauser-Feshbach theory.
doi: 10.1103/PhysRevC.87.045806
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
2013GO19 Phys.Rev. C 88, 064308 (2013) P.M.Goddard, N.Cooper, V.Werner, G.Rusev, P.D.Stevenson, A.Rios, C.Bernards, A.Chakraborty, B.P.Crider, J.Glorius, R.S.Ilieva, J.H.Kelley, E.Kwan, E.E.Peters, N.Pietralla, R.Raut, C.Romig, D.Savran, L.Schnorrenberger, M.K.Smith, K.Sonnabend, A.P.Tonchev, W.Tornow, S.W.Yates Dipole response of 76Se above 4 MeV NUCLEAR REACTIONS 76Se(polarized γ, γ'), E=4-9 MeV; measured Eγ, Iγ, γ(θ), integrated σ, γ(linear polarization) at HIγS facility at TUNL. 76Se; deduced levels, J, π, Γ, level half-lives, B(E1), B(M1), branching ratios. Comparison with theoretical calculations.
doi: 10.1103/PhysRevC.88.064308
2013IS14 Phys.Lett. B 727, 361 (2013) J.Isaak, D.Savran, M.Krticka, M.W.Ahmed, J.Beller, E.Fiori, J.Glorius, J.H.Kelley, B.Loher, N.Pietralla, C.Romig, G.Rusev, M.Scheck, L.Schnorrenberger, J.Silva, K.Sonnabend, A.P.Tonchev, W.Tornow, H.R.Weller, M.Zweidinger Constraining nuclear photon strength functions by the decay properties of photo-excited states NUCLEAR REACTIONS 11B, 130Te(γ, γ'), (γ, X), E<10 MeV; measured reaction products, Eγ, Iγ; deduced excited states π quantum numbers within 5.5-8.5 MeV region, γ-ray branching ratio, population intensity. Comparison with DICEBOX simulations, DHIPS and HIγS facilities at Darmstadt and TUNL, respectively.
doi: 10.1016/j.physletb.2013.10.040
2013RO28 Phys.Rev. C 88, 044331 (2013) C.Romig, J.Beller, J.Glorius, J.Isaak, J.H.Kelley, E.Kwan, N.Pietralla, V.Yu.Ponomarev, A.Sauerwein, D.Savran, M.Scheck, L.Schnorrenberger, K.Sonnabend, A.P.Tonchev, W.Tornow, H.R.Weller, A.Zilges, M.Zweidinger Low-lying dipole strength of the open-shell nucleus 94Mo NUCLEAR REACTIONS 94Mo(γ, γ'), (polarized γ, γ'), E=5.47, 6.05, 6.44, 6.61, 6.89, 7.65, 8.70 MeV; measured Eγ, Iγ, γγ(θ), γ-polarization asymmetry using DHIPS setup at S-DALINAC, and HiγS at TUNL and DFELL facilities. 94Mo; deduced levels, J, π, Γ20/Γ, branching ratios, B(E1), B(M1), E1 strength distributions, feeding of first 2+ level, elastic σ. Comparison with QPM calculations, and statistical model using DICEBOX computer code.
doi: 10.1103/PhysRevC.88.044331
2013SC08 Phys.Rev. C 87, 051304 (2013) M.Scheck, V.Yu.Ponomarev, T.Aumann, J.Beller, M.Fritzsche, J.Isaak, J.H.Kelley, E.Kwan, N.Pietralla, R.Raut, C.Romig, G.Rusev, D.Savran, K.Sonnabend, A.P.Tonchev, W.Tornow, H.R.Weller, M.Zweidinger Decay pattern of the pygmy dipole resonance in 60Ni NUCLEAR REACTIONS 60Ni(polarized γ, γ'), E=7.65-9.66 MeV; measured Eγ, Iγ, M1 and E1 strengths at HIγS-TUNL facility. 60Ni; deduced levels, J, π, PDR, branching ratios, number of 1+ and 1- states. Comparison with quasiparticle phonon model (QPM) calculations.
doi: 10.1103/PhysRevC.87.051304
2013SC20 Phys.Rev. C 88, 044304 (2013) M.Scheck, V.Yu.Ponomarev, M.Fritzsche, J.Joubert, T.Aumann, J.Beller, J.Isaak, J.H.Kelley, E.Kwan, N.Pietralla, R.Raut, C.Romig, G.Rusev, D.Savran, L.Schorrenberger, K.Sonnabend, A.P.Tonchev, W.Tornow, H.R.Weller, A.Zilges, M.Zweidinger Photoresponse of 60Ni below 10-MeV excitation energy: Evolution of dipole resonances in fp-shell nuclei near N=Z NUCLEAR REACTIONS 60Ni(γ, γ'), (polarized γ, γ'), E<10 MeV; 58Ni(polarized γ, γ'), E<10 MeV; measured Eγ, Iγ, γγ(θ), γ-ray polarization, integrated σ, γ-branching ratios using High-intensity photon setup at S-DALINAC facility. 58,60Ni; deduced levels, J, π, width, level half-lives, B(E1), B(M1), B(E2), E1 and M1 strength distributions. Thomas-Reiche-Kuhn sum rule. Pygmy-dipole resonances. Comparison with QPM calculations.
doi: 10.1103/PhysRevC.88.044304
2012CO17 Phys.Rev. C 86, 034313 (2012) N.Cooper, F.Reichel, V.Werner, L.Bettermann, B.Alikhani, S.Aslanidou, C.Bauer, L.Coquard, M.Fritzsche, Y.Fritzsche, J.Glorius, P.M.Goddard, T.Moller, N.Pietralla, M.Reese, C.Romig, D.Savran, L.Schnorrenberger, F.Siebenhuhner, V.V.Simon, K.Sonnabend, M.K.Smith, C.Walz, S.W.Yates, O.Yevetska, M.Zweidinger Photoresponse of 76Se below 9 MeV NUCLEAR REACTIONS 76Se(γ, γ'), E<9 MeV; measured Eγ, Iγ, γ(θ), integrated σ using S-DALINAC facility at the TU Darmstadt. 76Se; deduced levels, J, π, B(E1), B(M1), level half-lives, reduced E1 strength distribution, candidates for 2+ and fragment of the 1+ mixed-symmetry states.
doi: 10.1103/PhysRevC.86.034313
2012EN02 Phys.Rev. C 85, 064331 (2012) J.Endres, D.Savran, P.A.Butler, M.N.Harakeh, S.Harissopulos, R.-D.Herzberg, R.Krucken, A.Lagoyannis, E.Litvinova, N.Pietralla, V.Yu.Ponomarev, L.Popescu, P.Ring, M.Scheck, F.Schluter, K.Sonnabend, V.I.Stoica, H.J.Wortche, A.Zilges Structure of the pygmy dipole resonance in 124Sn NUCLEAR REACTIONS 124Sn(α, α'), E=136 MeV; measured Eγ, Eα, αγ-coin, αγ(θ) using Big-Bite magnetic Spectrometer at KVI facility; deduced pygmy dipole resonances, levels, differential σ. Comparison with B(E1) strengths in (γ, γ'). Comparison with quasiparticle-phonon model calculations and relativistic quasiparticle random-phase approximations.
doi: 10.1103/PhysRevC.85.064331
2012OR03 J.Phys.:Conf.Ser. 337, 012030 (2012) A.Ornelas, D.Galaviz, Zs.Fulop, Gy.Gyurky, G.Kiss, Z.Mate, P.Mohr, T.Rauscher, E.Somorjai, K.Sonnabend, A.Zilges Investigation of α-nuclear potential families from elastic scattering experiments NUCLEAR REACTIONS 106Cd(α, γ), E(cm)=7-12 MeV;106Cd(α, n), E(cm)=10-12 MeV; calculated S-factor using various sets of optical model parameters. 106Cd(α, α), E=16.1-18.8 MeV; calculated σ(θ) using various sets of optical model parameters. Compared with published data of the same group.
doi: 10.1088/1742-6596/337/1/012030
2012RE05 Phys.Rev. C 85, 035802 (2012) R.Reifarth, S.Dababneh, M.Heil, F.Kappeler, R.Plag, K.Sonnabend, E.Uberseder Neutron activation of natural zinc samples at kT=25 keV NUCLEAR REACTIONS 64,68,70Zn(n, γ)65Zn/69mZn/71Zn/71mZn, [neutrons from 7Li(p, n), E=1912 keV], kT=25 keV; measured Eγ, Iγ, natural Zn target; deduced capture cross sections, Maxwellian averaged cross sections for E(n) at kT=5-100 keV. Relevance to s-process network calculations for convective core He burning and convective shell C burning in massive stars. RADIOACTIVITY 71mZn(β-)[from Zn(n, γ), kT=25 keV]; measured Eγ, Iγ, precise half-life of isomer. Comparison with previous measurements
doi: 10.1103/PhysRevC.85.035802
2012SC03 Acta Phys.Pol. B43, 333 (2012) F.Schluter, J.Endres, A.Zilges, D.Savran, M.Fritzsche, N.Pietralla, C.Romig, M.Zweidinger, K.Sonnabend The Pygmy Dipole Resonance in 124Sn NUCLEAR REACTIONS 124Sn(γ, γ'), E<7.8 MeV; measured reaction products, Eγ, Iγ. 11B; deduced integral σ, B(E1), elastic transition strength, pigmy dipole resonance. Comparison with GEANT calculations.
doi: 10.5506/APhysPolB.43.333
2012ZW01 J.Phys.:Conf.Ser. 366, 012054 (2012) M.Zweidinger, J.Beller, J.Isaak, N.Pietralla, V.Yu.Ponomarev, C.Romig, D.Savran, M.Scheck, K.Sonnabend Photon scattering off 94Zr and 96Zr NUCLEAR REACTIONS 94,96Zr(γ, γ'), E=0-10 MeV; calculated dipole excitation strength B(E1), B(M1) energy distribution; calculated B(E1), B(M1) using QPM. Compared with data. Analysis still in progress.
doi: 10.1088/1742-6596/366/1/012054
2011BE17 Phys.Rev. C 83, 052802 (2011) A.Best, J.Gorres, M.Couder, R.deBoer, S.Falahat, A.Kontos, P.J.LeBlanc, Q.Li, S.O'Brien, K.Sonnabend, R.Talwar, E.Uberseder, M.Wiescher First direct measurement of resonance strengths in 17O(α, γ)21Ne NUCLEAR REACTIONS 17O(α, γ), E=750-1650 keV; measured Eγ, Iγ. 21Ne; deduced resonances, resonance strengths, levels, J, π, γ-branching ratios. Implications for neutron poisoning efficiency of 16O in the weak s-process. Comparison with previous experimental data, Caughlan-Fowler reaction rates, and calculated rates based on a microscopic three-cluster model of Descouvemont.
doi: 10.1103/PhysRevC.83.052802
2011GL01 Prog.Part.Nucl.Phys. 66, 379 (2011) J.Glorius, M.Knorzer, S.Muller, N.Pietralla, A.Sauerwein, K.Sonnabend, C.Walzlein, M.Wiescher p-process nucleosynthesis: Activation experiments NUCLEAR REACTIONS 170Yb(γ, n), E<9.9 MeV; 166Er(α, n), E=30 MeV; 169Tm(p, n), E=3.3-7 MeV; measured Eγ, Iγ; deduced σ. Comparison with TALYS and NON-SMOKER calculations.
doi: 10.1016/j.ppnp.2011.01.038
2011IS01 Phys.Rev. C 83, 034304 (2011) J.Isaak, D.Savran, M.Fritzsche, D.Galaviz, T.Hartmann, S.Kamerdzhiev, J.H.Kelley, E.Kwan, N.Pietralla, C.Romig, G.Rusev, K.Sonnabend, A.P.Tonchev, W.Tornow, A.Zilges Investigation of low-lying electric dipole strength in the semimagic nucleus 44Ca NUCLEAR REACTIONS 44Ca(polarized γ, γ'), E = 6-10, 9.9 MeV; measured Eγ, Iγ, γ(θ), integrated cross sections, and polarization asymmetry at DHIPS facility using S-DALINAC accelerator, and at HIγS facility. 44Ca; deduced levels, J, π, photon branching ratios, widths, B(E1) and B(M1) transition strengths. Comparisons with dipole strengths in 40,48Ca and with microscopic calculations within the extended theory of finite Fermi systems. Dependence of total E1 strength on neutron number.
doi: 10.1103/PhysRevC.83.034304
2011SA38 Phys.Rev. C 84, 024326 (2011) D.Savran, M.Elvers, J.Endres, M.Fritzsche, B.Loher, N.Pietralla, V.Yu.Ponomarev, C.Romig, L.Schnorrenberger, K.Sonnabend, A.Zilges Fragmentation and systematics of the pygmy dipole resonance in the stable N=82 isotones NUCLEAR REACTIONS 136Xe(γ, γ'), E=8.0, 9.2 MeV; measured Eγ, Iγ, γ(θ) at DHIPS facility. 136Xe; deduced levels, J, π, partial decay widths, B(E1). Comparison with Quasiparticle phonon model calculations. Systematics of measured and calculated B(E1) strengths for pygmy dipole resonances (PDR) in N=82 isotones 136Xe, 138Ba, 140Ce, 142Nd, and 144Sm. Discussed fragmentation of E1 strength.
doi: 10.1103/PhysRevC.84.024326
2011SA70 J.Phys.:Conf.Ser. 312, 092055 (2011) D.Savran, J.Endres, M.N.Harakeh, N.Pietralla, K.Sonnabend, V.I.Stoica, H.J.Wortche, A.M.van den Berg, A.Zilges Splitting of the Pygmy Dipole Resonance NUCLEAR REACTIONS 94Mo, 124Sn, 138Ba, 140Ce(α, α'γ), E=136 MeV; measured reaction products; deduced σ(α, θ), pygmy dipole resonance B(E1) distribution. Compared with (γ, γ') data measurements.
doi: 10.1088/1742-6596/312/9/092055
2011SO35 J.Phys.:Conf.Ser. 312, 042007 (2011) K.Sonnabend, J.Glorius, J.Gorres, M.Knorzer, S.Muller, A.Sauerwein, W.P.Tan, M.Wiescher Activation Experiments for p-Process Nucleosynthesis NUCLEAR REACTIONS 166Er(α, n), E=11.75-15 MeV;169Tm(p, n), E(cm)=3.3-6.8 MeV; measured Eγ, Iγ using HPGe; deduced σ using activation method; calculated σ using TALYS and NON-SMOKER. A=155-176(γ, n), E≈Gamow window; measured Eγ, Iγ from bremsstrahlung experiment; deduced reaction rates; calculated reaction rates using TALYS. Compared with other published data on (γ, n).
doi: 10.1088/1742-6596/312/4/042007
2010EN01 Phys.Rev.Lett. 105, 212503 (2010) J.Endres, E.Litvinova, D.Savran, P.A.Butler, M.N.Harakeh, S.Harissopulos, R.-D.Herzberg, R.Krucken, A.Lagoyannis, N.Pietralla, V.Yu.Ponomarev, L.Popescu, P.Ring, M.Scheck, K.Sonnabend, V.I.Stoica, H.J.Wortche, A.Zilges Isospin Character of the Pygmy Dipole Resonance in 124Sn NUCLEAR REACTIONS 124Sn(α, α'), E=136 MeV; measured Eα, Iα, Eγ, Iγ, α-γ-coin.; deduced pigmy resonance σ(θ), B(E1), two groups of states. Comparison with calculations.
doi: 10.1103/PhysRevLett.105.212503
2010SC33 J.Phys.:Conf.Ser. 202, 012027 (2010) L.Schnorrenberger, K.Sonnabend, J.Glorius, B.Loher, N.Pietralla, D.Savran, V.Simon, C.Walzlein Nuclear astrophysics with tagged photons: NEPTUN @ S-DALINAC, Darmstadt
doi: 10.1088/1742-6596/202/1/012027
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
2009HA13 Phys.Rev. C 79, 055807 (2009) J.Hasper, D.Galaviz, S.Muller, A.Sauerwein, D.Savran, L.Schnorrenberger, K.Sonnabend, A.Zilges Investigation of photoneutron reactions on 192Os and 191, 193Ir at energies of relevance for the astrophysical p process NUCLEAR REACTIONS 191,193Ir, 192Os(γ, n)190Ir/191Os/191mOs/192Ir, E=7600-9900 keV; measured Eγ, Iγ from radioactive decays of 190Ir, 191Os, 191mOs and 192Ir; deduced yields and σ. Comparison with calculated using NON-SMOKERWEB and TALYS codes.
doi: 10.1103/PhysRevC.79.055807
2009KI16 Phys.Rev. C 80, 045807 (2009) G.G.Kiss, P.Mohr, Zs.Fulop, D.Galaviz, Gy.Gyurky, Z.Elekes, E.Somorjai, A.Kretschmer, K.Sonnabend, A.Zilges, M.Avrigeanu High precision 89Y(α, α)89Y scattering at low energies NUCLEAR REACTIONS 89Y(α, α), E(cm)=15.51, 18.63 MeV; measured Eα, Iα, σ; deduced parameters for local scattering potentials. 89Y(α, α), E(cm)=20.1, 22.0, 23.9, 40.2, 62.2, 158.9 MeV; 92Mo(α, α), E(cm)=15.69, 18.62 MeV; analyzed σ and σ(θ) measurements with different potential parameters. 93Nb; analyzed α-cluster states in 89Y+α system, bands, and B(E2) using potential parameters close to those for the scattering potential.
doi: 10.1103/PhysRevC.80.045807
2008BU21 Phys.Rev. C 78, 044309 (2008) M.A.Bussing, M.Elvers, J.Endres, J.Hasper, A.Zilges, M.Fritzsche, K.Lindenberg, S.Muller, D.Savran, K.Sonnabend Parity assignments in 140Ce up to 7 MeV using Compton polarimetry NUCLEAR REACTIONS 32S, 140Ce, 208Pb(γ, γ'), E=2-7 MeV; measured Eγ, γ-ray linear polarizations. 140Ce; deduced levels, J, π, asymmetries. Bremsstrahlung beam, Compton polarimetry.
doi: 10.1103/PhysRevC.78.044309
2008EL01 J.Phys.(London) G35, 014027 (2008) M.Elvers, J.Hasper, S.Muller, D.Savran, L.Schnorrenberger, K.Sonnabend, A.Zilges Nuclear astrophysics with real photons?the data acquisition system of the NEPTUN tagger setup
doi: 10.1088/0954-3899/35/1/014027
2008HA04 Phys.Rev. C 77, 015803 (2008) J.Hasper, S.Muller, D.Savran, L.Schnorrenberger, K.Sonnabend, A.Zilges Investigation of photoneutron reactions close to and above the neutron emission threshold in the rare earth region NUCLEAR REACTIONS 148,150Nd, 154Sm, 154,160Gd(γ, n), E=7450-9800 keV [from Cu(e, γ)]; measured Eγ, Iγ, photon flux, normalization, cross section; deduced reaction rates.
doi: 10.1103/PhysRevC.77.015803
2008KI06 J.Phys.(London) G35, 014037 (2008) G.G.Kiss, G.Gyurky, Z.Fulop, E.Somorjai, D.Galaviz, A.Kretschmer, K.Sonnabend, A.Zilges, P.Mohr, M.Avrigeanu Study of the 89Y(α, α)89Y reaction close to the Coulomb barrier NUCLEAR REACTIONS 89Y(α, α), E(cm)=15.5, 18.6 MeV; measured Eα, Iα, σ(θ).
doi: 10.1088/0954-3899/35/1/014037
2008SA18 Eur.Phys.J. A 36, 17 (2008) D.Savran, W.Bayer, D.Galaviz, S.Muller, K.Sonnabend, A.Zilges The photoresponse of 45Sc up to 7 MeV NUCLEAR REACTIONS 45Sc(γ, γ'), E≈5-7 MeV bremsstrahlung; measured Eγ, Iγ, integrated σ. 45Sc deduced level/transition energies, decay widths and B(E1), B(M1) strength distributions. Comparison with 44Ca.
doi: 10.1140/epja/i2008-10555-0
2008SA19 Phys.Rev.Lett. 100, 232501 (2008) D.Savran, M.Fritzsche, J.Hasper, K.Lindenberg, S.Muller, V.Yu.Ponomarev, K.Sonnabend, A.Zilges Fine Structure of the Pygmy Dipole Resonance in 136Xe NUCLEAR REACTIONS 136Xe(γ, γ'), E not given; measured Eγ, Iγ, B(E1). Comparison with quasiparticle phonon model.
doi: 10.1103/PhysRevLett.100.232501
2006KI11 Eur.Phys.J. A 27, Supplement 1, 197 (2006) G.G.Kiss, Zs.Fulop, Gy.Gyurky, Z.Mate, E.Somorjai, D.Galaviz, A.Kretschmer, K.Sonnabend, A.Zilges Study of the 106Cd(α, α)106Cd scattering at energies relevant to the p-process NUCLEAR REACTIONS 106Cd(α, α), E(cm)=15.5, 17, 19 MeV; measured σ(θ); deduced optical model parameters. 106Cd(α, γ), E(cm)=5-11 MeV; calculated astrophysical S-factors.
doi: 10.1140/epja/i2006-08-030-9
2006MU06 Phys.Rev. C 73, 025804 (2006); Comment Phys.Rev. C 74, 019801 (2006) S.Muller, A.Kretschmer, K.Sonnabend, A.Zilges, D.Galaviz 187Re(γ, n) cross section close to and above the neutron threshold NUCLEAR REACTIONS 187Re(γ, n), E=7.65-9.9 MeV bremsstrahlung; measured σ. Comparison with model predictions, astrophysical implications discussed.
doi: 10.1103/PhysRevC.73.025804
2006SO10 Eur.Phys.J. A 27, Supplement 1, 149 (2006) K.Sonnabend, M.Babilon, J.Hasper, S.Muller, M.Zarza, A.Zilges Photodissociation of neutron deficient nuclei
doi: 10.1140/epja/i2006-08-022-9
2005GA40 Nucl.Phys. A758, 521c (2005) D.Galaviz, A.Kretschmer, S.Muller, K.Sonnabend, A.Zilges Nuclear astrophysics with real photons NUCLEAR REACTIONS 190,192,198Pt, 196,198,204Hg, 204Pb(γ, n), E=spectrum; measured reaction rates. Astrophysical implications discussed, comparison with model predictions.
doi: 10.1016/j.nuclphysa.2005.05.182
2005GY03 Nucl.Phys. A758, 517c (2005) Gy.Gyurky, Zs.Fulop, G.Kiss, Z.Mate, E.Somorjai, J.Gorres, A.Palumbo, M.Wiescher, D.Galaviz, A.Kretschmer, K.Sonnabend, A.Zilges, T.Rauscher A comprehensive study of the 106Cd(α, γ)110Sn reaction at energies relevant to the p-process NUCLEAR REACTIONS 106Cd(α, γ), E=8-12.5 MeV; measured Eγ, Iγ, σ. 106Cd(α, α), E ≈ 15, 17, 19 MeV; measured σ(θ). Astrophysical implications discussed, comparison with model predictions.
doi: 10.1016/j.nuclphysa.2005.05.094
2004SO27 Phys.Rev. C 70, 035802 (2004); Erratum Phys.Rev. C 72, 019901 (2005) K.Sonnabend, K.Vogt, D.Galaviz, S.Muller, A.Zilges Systematic study of (γ, n) reaction rates for Z ≥ 78 isotopes NUCLEAR REACTIONS 196,198,204Hg, 204Pb(γ, n), E=8325-9900 keV bremsstrahlung; measured activation yields; deduced reaction rates. Comparison with statistical model predictions.
doi: 10.1103/PhysRevC.70.035802
2003MO24 Nucl.Phys. A718, 243c (2003) P.Mohr, T.Rauscher, K.Sonnabend, K.Vogt, A.Zilges Photoreactions in Nuclear Astrophysics NUCLEAR REACTIONS 186W, 190,192,198Pt, 196,198,204Hg, 197Au, 204Pb(γ, n), E ≈ threshold; measured σ. Photoactivation technique, comparison with model predictions.
doi: 10.1016/S0375-9474(03)00721-8
2003MO29 Nucl.Phys. A719, 90c (2003) P.Mohr, M.Babilon, D.Galaviz, K.Sonnabend, K.Vogt, A.Zilges Nucleosynthesis by photon-induced reactions NUCLEAR REACTIONS 148Gd(γ, n), (γ, α), E=0-20 MeV; calculated σ, astrophysical reaction rates.
doi: 10.1016/S0375-9474(03)00973-4
2003SO05 Astrophys.J. 583, 506 (2003) K.Sonnabend, P.Mohr, K.Vogt, A.Zilges, A.Mengoni, T.Rauscher, H.Beer, F.Kappeler, R.Gallino The s-Process Branching at 185W NUCLEAR REACTIONS 186W(γ, n), E=8775 keV bremsstrahlung; measured σ. 186W(γ, n), E=7-10 MeV; calculated σ. 185W(n, γ), E=stellar; calculated Maxwellian averaged σ, astrophysical s-process branching. Activation technique.
doi: 10.1086/345086
2003SO18 Nucl.Phys. A718, 533c (2003) K.Sonnabend, A.Mengoni, P.Mohr, T.Rauscher, K.Vogt, A.Zilges Determination of the (n, γ) reaction rate of unstable 185W in the astrophysical s-process via its inverse reaction NUCLEAR REACTIONS 186W(γ, n), E=8775 keV bremsstrahlung; measured reaction rate. 185W(n, γ), E=low; deduced Maxwellian averaged capture σ. Activation technique. RADIOACTIVITY 185W(β-) [from 186W(γ, n)]; measured Eγ, Iγ, T1/2.
doi: 10.1016/S0375-9474(03)00835-2
2003SO20 Nucl.Phys. A719, 123c (2003) K.Sonnabend, A.Mengoni, P.Mohr, T.Rauscher, K.Vogt, A.Zilges Determination of (n, γ) reaction rates at s-process branching points via their inverse reactions NUCLEAR REACTIONS 96Zr, 197Au(γ, n), E ≈ 8000-10000 keV bremsstrahlung; measured energy-integrated σ. Astrophysical implications discussed.
doi: 10.1016/S0375-9474(03)00980-1
2003SO23 Phys.Rev. C 68, 048802 (2003) K.Sonnabend, P.Mohr, A.Zilges, R.Hertenberger, H.-F.Wirth, G.Graw, T.Faestermann First excited state of the s-process branching nucleus 95Zr NUCLEAR REACTIONS 94Zr(d, p), E=22 MeV; measured Ep, σ(θ). 95Zr deduced levels. Comparison with previous results.
doi: 10.1103/PhysRevC.68.048802
2003VO16 Nucl.Phys. A718, 575c (2003) K.Vogt, P.Mohr, T.Rauscher, K.Sonnabend, A.Zilges Determination of (γ, n) reaction rates for the astrophysical γ process NUCLEAR REACTIONS 204Pb(γ, n), E ≈ 8700-9700 keV bremsstrahlung; measured photoactivation σ.
doi: 10.1016/S0375-9474(03)00857-1
2002BA81 Phys.Rev. C66, 028801 (2002) M.Babilon, W.Bayer, D.Galaviz, T.Hartmann, C.Hutter, P.Mohr, W.Rochow, K.Sonnabend, K.Vogt, S.Volz, A.Zilges Resonance strengths for the reaction 28Si(α, γ)32S at low energies NUCLEAR REACTIONS 28Si(α, γ), E=2.91 MeV; measured Eγ, Iγ; deduced resonance features, astrophysical reaction rate. 32S deduced resonances J, π, strength.
doi: 10.1103/PhysRevC.66.028801
2002VO13 Nucl.Phys. A707, 241 (2002) K.Vogt, P.Mohr, M.Babilon, W.Bayer, D.Galaviz, T.Hartmann, C.Hutter, T.Rauscher, K.Sonnabend, S.Volz, A.Zilges Measurement of the (γ, n) Cross Section of the Nucleus 197Au Close Above the Reaction Threshold NUCLEAR REACTIONS 197Au(γ, n), E=8325-9900 keV bremsstrahlung; measured σ; deduced astrophysical reaction rates. Photoactivation technique. Comparison with previous results and model predictions.
doi: 10.1016/S0375-9474(02)00922-3
Back to query form |