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NSR database version of April 11, 2024.

Search: Author = K.Sonnabend

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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
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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 k_BT ≈ 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
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset23776.

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
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Data from this article have been entered in the XUNDL database. For more information, click here.

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
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetL0266.

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
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO2421.

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
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2276.

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
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset14467.

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, ^{80,82,83,84,86}Kr; 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
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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
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO2396. Data from this article have been entered in the XUNDL database. For more information, click here.

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
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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
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO2272.

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
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD4340.

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
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Data from this article have been entered in the XUNDL database. For more information, click here.

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
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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
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2119.

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
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO2234.

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
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetL0188.

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
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2007. Data from this article have been entered in the XUNDL database. For more information, click here.

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
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2009. Data from this article have been entered in the XUNDL database. For more information, click here.

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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Data from this article have been entered in the XUNDL database. For more information, click here.

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
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetL0187. Data from this article have been entered in the XUNDL database. For more information, click here.

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
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetL0193.

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
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Data from this article have been entered in the XUNDL database. For more information, click here.

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
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetL0189. Data from this article have been entered in the XUNDL database. For more information, click here.

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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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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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, 193}Ir 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-SMOKER^WEB and TALYS codes.

doi: 10.1103/PhysRevC.79.055807
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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, T_1/2.

doi: 10.1016/S0375-9474(03)00835-2
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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
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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
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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
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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
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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
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