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NSR database version of April 11, 2024.

Search: Author = A.Oberstedt

Found 53 matches.

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2022LE06      Phys.Rev. C 105, 045801 (2022)

B.Lehnert, M.Hult, G.Lutter, G.Marissens, S.Oberstedt, H.Stroh, J.Kotila, A.Oberstedt, K.Zuber

Constraints on partial half-lives of 136Ce and 138Ce double electron captures

RADIOACTIVITY 136Ce(2EC), (β+EC); 138Ce(2EC); measured Eγ, Iγ; deduced constraints on the T1/2 of various decay modes including neutrinoless (0νKL and 0νLL to the ground state for 138Ce, 0νKL, 0νLL and 0νKK to ground and excited states for 136Ce). CeBr3 crystal with mass 4381 g measured with HPGe coaxial detector over three years at the HADES underground laboratory. Comparison to other experimental data and theoretical predictions.

doi: 10.1103/PhysRevC.105.045801
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Data from this article have been entered in the XUNDL database. For more information, click here.


2021GJ01      Phys.Rev. C 103, 034609 (2021)

D.Gjestvang, S.Siem, F.Zeiser, J.Randrup, R.Vogt, J.N.Wilson, F.Bello-Garrote, L.A.Bernstein, D.L.Bleuel, M.Guttormsen, A.Gorgen, A.C.Larsen, K.L.Malatji, E.F.Matthews, A.Oberstedt, S.Oberstedt, T.Tornyi, G.M.Tveten, A.S.Voyles

Excitation energy dependence of prompt fission γ-ray emission from 241Pu

NUCLEAR REACTIONS 240Pu(d, pF)241Pu*, E=13.5 MeV; measured outgoing protons using SiRi, a silicon ΔE-E detector, fission fragments using NIFF, consisting of four parallel plate avalanche counters (PPACs), prompt fission γ rays (PFG), (particle)γ-coin using Oslo Scintillator Array (OSCAR) of 30 LaBr3:Ce scintillators for γ radiation at the Oslo Cyclotron Laboratory; deduced average total PFG multiplicity per fission, average total PFG energy released per fission, and the average PFG energy in the excitation range of 5.75-8.25 MeV. Comparison with simulations using the fission model FREYA, with previous experimental results, and evaluation in ENDF/B-VIII.0.

doi: 10.1103/PhysRevC.103.034609
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset23783.


2021OB01      Phys.Rev. C 104, 024611 (2021)

A.Oberstedt, S.Oberstedt

Exploring the fission barrier of 235U

NUCLEAR REACTIONS 234U(n, F), E=0.95, 1.27 MeV; analyzed earlier experimental data in 2007Ob02 for cross sections and the shape isomer in 235U; deduced post-neutron kinetic energy spectrum of fission fragments, two-dimensional plot of isomeric fission events as functions of time and kinetic energy, total kinetic energy (TKE) of fission fragments and compared to results from GEF calculations. 234U(n, F), E=0.2-5.0 MeV; analyzed previous experimental data for ratio of mode-weighted σ(E), fission barrier parameters and outer fission barrier for 235U, and compared to values in literature. 235mU; deduced revised half-life of the shape or fission isomer.

doi: 10.1103/PhysRevC.104.024611
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2021TR05      Phys.Lett. B 817, 136293 (2021)

M.Travar, V.Piau, A.Gook, O.Litaize, J.Nikolov, A.Oberstedt, S.Oberstedt, J.Enders, M.Peck, W.Geerts, M.Vidali

Experimental information on mass- and TKE-dependence of the prompt fission γ-ray multiplicity

RADIOACTIVITY 252Cf(SF); measured decay products, Eγ, Iγ; deduced mass-dependent average prompt fission γ-ray multiplicity, saw-tooth like shape of multiplicity-mass correlation.

doi: 10.1016/j.physletb.2021.136293
Citations: PlumX Metrics


2020OB01      Eur.Phys.J. A 56, 196 (2020)

A.Oberstedt, A.Gatera, A.Gook, S.Oberstedt

Time response and its impact on prompt fission γ-ray spectra characteristics

doi: 10.1140/epja/s10050-020-00209-6
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2020OB02      Eur.Phys.J. A 56, 236 (2020)

A.Oberstedt, M.Lebois, S.Oberstedt, L.Qi, J.N.Wilson

Prompt γ-ray characteristics from 235U(n, f) at E(bar)n = 1.7 MeV

NUCLEAR REACTIONS 235U(n, F), E=1.7 MeV; measured fission products, Eγ, Iγ; deduced prompt fission γ-ray spectra, yields. Comparison with available data.

doi: 10.1140/epja/s10050-020-00246-1
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset23775.


2020QI01      Eur.Phys.J. A 56, 98 (2020)

L.Qi, C.Schmitt, M.Lebois, A.Oberstedt, S.Oberstedt, J.N.Wilson, A.Al-Adili, A.Chatillon, D.Choudhury, A.Gatera, G.Georgiev, A.Gook, B.Laurent, A.Maj, I.Matea, S.J.Rose, B.Wasilewska, F.Zeiser

Potential of prompt γ-ray ay emission studies in fast-neutron induced fission: a first step

doi: 10.1140/epja/s10050-020-00108-w
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset23724.


2019JO08      Acta Phys.Pol. B50, 297 (2019)

N.Jovancevic, M.Lebois, J.N.Wilson, D.Thisse, L.Qi, I.Matea, F.Ibrahim, D.Verney, M.Babo, C.Delafosse, F.Adsley, G.Tocabens, A.Gottardo, Y.Popovitch, J.Nemer, R.Canavan, M.Rudigier, K.Belvedere, A.Boso, P.Regan, Zs.Podolyak, R.Shearman, M.Bunce, P.Inavov, S.Oberstedt, A.Lopez-Martens, K.Hauschild, J.Ljungvall, R.Chakma, R.Lozeva, P.-A.Soderstrom, A.Oberstedt, D.Etasse, D.Ralet, A.Blazhev, R.-B.Gerst, G.Hafner, N.Cieplicka-Orynczak, L.Iskra, B.Fornal, G.Benzoni, S.Leoni, S.Bottoni, C.Henrich, P.Koseoglou, J.Wiederhold, I.Homm, C.Surder, T.Kroll, D.Knezevic, A.Dragic, L.Cortes, N.Warr, K.Miernik, E.Adamska, M.Piersa, K.Rezynkina, L.Fraile, J.Benito Garcia, V.Sanchez, A.Algora, P.Davies, V.Guadilla-Gomez, M.Fallot, T.Kurtukian-Nieto, C.Schmitt, M.Heine, D.Reygadas Tello, M.Yavachova, M.Diakaki, F.Zeiser, W.Paulson, D.Gestvang

Spectroscopy of Neutron Induced Reactions with the ν-ball Spectrometer

doi: 10.5506/aphyspolb.50.297
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2019OB01      Acta Phys.Pol. B50, 275 (2019)

A.Oberstedt, A.Gatera, A.Gook, S.Oberstedt

Systematic Studies of Fission Fragment De-excitation by Prompt γ-ray Emission

RADIOACTIVITY 252Cf(SF); measured Eγ, Iγ; deduced γ-ray multiplicity, average γ energy and total γ energy. Comparison with previous experimental data and FIFRELIN calculations.

doi: 10.5506/aphyspolb.50.275
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2018LA15      Phys.Rev. C 98, 054604 (2018)

J.-M.Laborie, R.Billnert, G.Belier, A.Oberstedt, S.Oberstedt, J.Taieb

First experimental prompt γ-ray spectra in fast-neutron-induced fission of 238U

NUCLEAR REACTIONS 238U(n, F), E=1.6, 5.1, 15.0 MeV; measured Eγ, Iγ from prompt fission γ spectra (PFGS) using BGO detector, and using time-of-flight technique to reject prompt fission neutrons at the CEA, DAM, DIF Van de Graaff accelerator; deduced average multiplicity and mean photon energy per fission. Comparison with prompt fission γ spectra from 235U(n, F), and with theoretical predictions using GEF and FIFRELIN codes.

doi: 10.1103/PhysRevC.98.054604
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset23447.


2018QI06      Phys.Rev. C 98, 014612 (2018)

L.Qi, M.Lebois, J.N.Wilson, A.Chatillon, S.Courtin, G.Fruet, G.Georgiev, D.G.Jenkins, B.Laurent, L.Le Meur, A.Maj, P.Marini, I.Matea, L.Morris, V.Nanal, P.Napiorkowski, A.Oberstedt, S.Oberstedt, C.Schmitt, O.Serot, M.Stanoiu, B.Wasilewska

Statistical study of the prompt-fission γ-ray spectrum for 238U (n, f) in the fast-neutron region

NUCLEAR REACTIONS 238U(n, F), E=1.9, 4.8 MeV fast neutrons from LICORNE directional neutron source; measured fission fragments, Eγ, Iγ, prompt-fission γ-ray spectra (PFGS), (fission events)γ-coin, and neutron time-of-flight using ionization chamber for fission detection, and PARIS array of fast scintillation detectors for γ detection at ALTO-IPN Orsay, using 252Cf(SF) as reference to validate experimental setup; deduced prompt fission γ multiplicity, average total Eγ. Comparison with previous experimental values, and with theoretical predictions from PbP, GEF, and FREYA fission models.

doi: 10.1103/PhysRevC.98.014612
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset23417.


2017GA12      Phys.Rev. C 95, 064609 (2017)

A.Gatera, T.Belgya, W.Geerts, A.Gook, F.-J.Hambsch, M.Lebois, B.Maroti, A.Moens, A.Oberstedt, S.Oberstedt, F.Postelt, L.Qi, L.Szentmiklosi, G.Sibbens, D.Vanleeuw, M.Vidali, F.Zeiser

Prompt-fission γ-ray spectral characteristics from 239Pu(nth, f)

NUCLEAR REACTIONS 239Pu(n, F), E=thermal and slow; measured fission-fragment distribution, Eγ, Iγ, time-of-flight (TOF) spectra for different γ-ray energies, prompt-fission γ-ray spectra (PFGS) at the 10 MW research reactor of Budapest Neutron; deduced average γ-ray multiplicity M, average energy, and the total energy. Comparison with evaluated nuclear data in ENDF/B-VII.1.

doi: 10.1103/PhysRevC.95.064609
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset31778.


2017GO16      Phys.Rev. C 96, 044301 (2017)

A.Gook, C.Eckardt, J.Enders, M.Freudenberger, A.Oberstedt, S.Oberstedt

Correlated mass, energy, and angular distributions from bremsstrahlung-induced fission of 234U and 232Th in the energy region of the fission barrier

NUCLEAR REACTIONS 234U(γ, F), Eend-point=9.0, 7.5, 6.4 MeV bremsstrahlung; 232Th(γ, F), Eend-point=9.5, 8.0 MeV bremsstrahlung; 238U(γ, F), Eend-point=8.5 MeV bremsstrahlung; measured fission-fragments, fission yields, fission-fragment angular distributions using twin Frisch-grid ionization chamber (FGIC) at the superconducting Darmstadt linear accelerator (S-DALINAC) facility; deduced fission-fragment mass yield and TKE distributions. Discussed possible interpretation of observed correlations in terms of fission modes.

doi: 10.1103/PhysRevC.96.044301
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetG0059.


2017OB01      Phys.Rev. C 96, 034612 (2017)

A.Oberstedt, R.Billnert, S.Oberstedt

Predictions of characteristics of prompt-fission γ-ray spectra from the n + 238U reaction up to En = 20 MeV

NUCLEAR REACTIONS 234,236U, 240,242Pu, 252Cf(n, F); analyzed systematics and experimental data for prompt-fission γ-ray spectra (PFGS); deduced revised parameters and used for 238U+n reaction. 238U(n, F), E<20 MeV; predicted average prompt-fission γ-ray multiplicity, average total γ-ray energy released, and average γ-ray energy per fission as function of incident neutron energy. Comparison with experimental data, and theoretical calculations.

doi: 10.1103/PhysRevC.96.034612
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2017RO16      Phys.Rev. C 96, 014601 (2017)

S.J.Rose, F.Zeiser, J.N.Wilson, A.Oberstedt, S.Oberstedt, S.Siem, G.M.Tveten, L.A.Bernstein, D.L.Bleuel, J.A.Brown, L.Crespo Campo, F.Giacoppo, A.Gorgen, M.Guttormsen, K.Hadynska, A.Hafreager, T.W.Hagen, M.Klintefjord, T.A.Laplace, A.C.Larsen, T.Renstrom, E.Sahin, C.Schmitt, T.G.Tornyi, M.Wiedeking

Energy dependence of the prompt γ-ray emission from the (d, p) -induced fission of 234U* and 240Pu*

NUCLEAR REACTIONS 233U(d, pF)234U*, E=12.5 MeV; 239Pu(d, pF)239Pu*, E=12 MeV; measured protons, fission fragments, Eγ, p(one of the fission fragments)γ-coin using CACTUS array for γ detection, SiRi detector array for charged-particles and NIFF detector for fission fragments at Oslo Cyclotron Laboratory (OCL); deduced prompt-fission γ-ray spectral (PFGS) distributions, multiplicity, average γ-ray energy, and total γ-ray energy as function of excitation energy. Comparison with model calculations using the fission model code GEF.

doi: 10.1103/PhysRevC.96.014601
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO2415.


2017WI02      Acta Phys.Pol. B48, 395 (2017)

J.N.Wilson, M.Lebois, L.Qi, P.Amador-Celdran, D.Bleuel, J.A.Briz, R.Carroll, W.Catford, H.De Witte, D.Doherty, R.Eloirdi, G.Georgiev, A.Gottardo, A.Goasduff, K.Hadynska-Klek, K.Hauschild, M.Hess, V.Ingeberg, T.Konstantinopoulos, J.Ljungvall, A.Lopez-Martens, G.Lorusso, R.Lozeva, R.Lutter, P.Marini, I.Matea, T.Materna, L.Mathieu, A.Oberstedt, S.Oberstedt, S.Panebianco, Z.Podolyak, A.Porta, P.H.Regan, P.Reiter, K.Rezynkina, S.J.Rose, E.Sahin, M.Seidlitz, R.Shearman, B.Siebeck, S.Siem, A.G.Smith, G.M.Tveten, D.Verney, N.Warr, F.Zeiser, M.Zielinska

Production and Study of Neutron-rich Nuclei Using the LICORNE Directional Neutron Source

NUCLEAR REACTIONS 238U(n, f), E≈threshold; measured Eγ, Iγ, γγ-coin.

doi: 10.5506/APhysPolB.48.395
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2017WI09      Phys.Rev.Lett. 118, 222501 (2017)

J.N.Wilson, M.Lebois, L.Qi, P.Amador-Celdran, D.Bleuel, J.A.Briz, R.Carroll, W.Catford, H.De Witte, D.T.Doherty, R.Eloirdi, G.Georgiev, A.Gottardo, A.Goasduff, K.Hadynska-Klek, K.Hauschild, H.Hess, V.Ingeberg, T.Konstantinopoulos, J.Ljungvall, A.Lopez-Martens, G.Lorusso, R.Lozeva, R.Lutter, P.Marini, I.Matea, T.Materna, L.Mathieu, A.Oberstedt, S.Oberstedt, S.Panebianco, Zs.Podolyak, A.Porta, P.H.Regan, P.Reiter, K.Rezynkina, S.J.Rose, E.Sahin, M.Seidlitz, O.Serot, R.Shearman, B.Siebeck, S.Siem, A.G.Smith, G.M.Tveten, D.Verney, N.Warr, F.Zeiser, M.Zielinska

Anomalies in the Charge Yields of Fission Fragments from the 238U(n, f) Reaction

NUCLEAR REACTIONS 238U(n, F), E fast; measured fission products, Eγ, Iγ. 141Te, 104Sr; deduced fission yields, charge yields of even-Z elements. Comparison with JEFF-3.1, ENDF/B-VII.1 evaluated nuclear data libraries.

doi: 10.1103/PhysRevLett.118.222501
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset23403. Data from this article have been entered in the XUNDL database. For more information, click here.


2016OB01      Phys.Rev. C 93, 054603 (2016)

S.Oberstedt, A.Oberstedt, A.Gatera, A.Gook, F.-J.Hambsch, A.Moens, G.Sibbens, D.Vanleeuw, M.Vidali

Prompt fission γ-ray spectrum characteristics from 240Pu (sf) and 242Pu (sf)

RADIOACTIVITY 240,242Pu(SF); measured prompt fission γ spectra (PFGS), Eγ, Iγ, (fission fragments)γ-coin at EC-JRC-IRMM; deduced average energy per photon, average multiplicity Mγ, average total γ-ray energy release per fission. Comparison with prompt fission γ spectrum from 241Pu(n, F), E=thermal, and with systematic trends.

doi: 10.1103/PhysRevC.93.054603
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset23305.


2015LE12      Phys.Rev. C 92, 034618 (2015)

M.Lebois, J.N.Wilson, P.Halipre, A.Oberstedt, S.Oberstedt, P.Marini, C.Schmitt, S.J.Rose, S.Siem, M.Fallot, A.Porta, A.-A.Zakari

Comparative measurement of prompt fission γ-ray emission from fast-neutron-induced fission of 235U and 238U

NUCLEAR REACTIONS 235U(n, F), E=1.73 MeV; 238U(n, F), E=2.07 MeV; measured prompt fission γ-ray (PFG) spectra using fast-neutron source LICORNE at the ALTO facility of the IPN-Orsay; deduced γ-multiplicity, total and average radiation energy, average photon energies. Monte Carlo N-particle (MCNP) simulations of all the components of the experimental setup.

doi: 10.1103/PhysRevC.92.034618
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset23299.


2015OB01      Phys.Rev. C 92, 014618 (2015)

A.Oberstedt, R.Billnert, F.-J.Hambsch, S.Oberstedt

Impact of low-energy photons on the characteristics of prompt fission γ-ray spectra

RADIOACTIVITY 252Cf(SF); measured prompt fission γ spectra (PFGS), (fission fragment)γ-coin using LaCl3:Ce scintillation detectors for γ rays and pcCVD diamond detector for fission fragments; deduced γ-ray multiplicity, average γ energy, and total γ energy. Comparison with previous experimental data, and with data from the evaluated library ENDF/B-VII.1. Discussed problems with the low-energy γ spectra.

doi: 10.1103/PhysRevC.92.014618
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset23197.


2015OB02      Eur.Phys.J. A 51, 178 (2015)

S.Oberstedt, R.Billnert, F.-J.Hambsch, M.Lebois, A.Oberstedt, J.N.Wilson

Future research program on prompt γ-ray emission in nuclear fission

doi: 10.1140/epja/i2015-15178-8
Citations: PlumX Metrics


2014HA25      Nucl.Data Sheets 119, 38 (2014)

F.-J.Hambsch, S.Oberstedt, A.Al-Adili, T.Brys, R.Billnert, C.Matei, A.Oberstedt, P.Salvador-Castineira, A.Tudora, M.Vidali

Fission Fragment Yield, Cross Section and Prompt Neutron and Gamma Emission Data from Actinide Isotopes

NUCLEAR REACTIONS 234,238U(n, F), E=0.2-5 MeV; measured fission fragments; deduced yields, prompt fission neutron multiplicity. Compared with evaluations and available data. 242Pu(n, F), E=0-3 MeV; measured fission fragments;deduced fission σ.Compared with evaluations and available data.

RADIOACTIVITY 252Cf(SF); measured prompt fission Eγ, Iγ; deduced γ-ray spectrum. Compared to other data and evaluations.

doi: 10.1016/j.nds.2014.08.012
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset23280.


2014LE01      Nucl.Instrum.Methods Phys.Res. A735, 145 (2014)

M.Lebois, J.N.Wilson, P.Halipre, B.Leniau, I.Matea, A.Oberstedt, S.Oberstedt, D.Verney

Development of a kinematically focused neutron source with the p(7Li, n)7Be inverse reaction

NUCLEAR REACTIONS 1H(7Li, n), E=13.5, 15, 15.5, 16, 17 MeV; measured reaction products, En, In; deduced neutron σ(θ). Monte Carlo code validation of experimental data.

doi: 10.1016/j.nima.2013.07.061
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2014LE24      Nucl.Data Sheets 119, 353 (2014)

X.Ledoux, M.Aiche, M.Avrigeanu, V.Avrigeanu, L.Audouin, E.Balanzat, B.Ban-detat, G.Ban, G.Barreau, E.Bauge, G.Belier, P.Bem, V.Blideanu, C.Borcea, S.Bouffard, T.Caillaud, A.Chatillon, S.Czajkowski, P.Dessagne, D.Dore, M.Fallot, F.Farget, U.Fischer, L.Giot, T.Granier, S.Guillous, F.Gunsing, C.Gustavsson, B.Jacquot, K.Jansson, B.Jurado, M.Kerveno, A.Klix, O.Landoas, F.R.Lecolley, J.L.Lecouey, M.Majerle, N.Marie, T.Materna, J.Mrazek, F.Negoita, J.Novak, S.Oberstedt, A.Oberstedt, S.Panebianco, L.Perrot, A.J.M.Plompen, S.Pomp, J.M.Ramillon, D.Ridikas, B.Rosse, G.Rudolf, O.Serot, S.P.Simakov, E.Simeckova, A.G.Smith, J.C.Sublet, J.Taieb, L.Tassan-Got, D.Tarrio, A.Takibayev, I.Thfoin, I.Tsekhanovich, C.Varignon

The Neutrons for Science Facility at SPIRAL-2

doi: 10.1016/j.nds.2014.08.097
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2014OB04      Nucl.Data Sheets 119, 225 (2014)

S.Oberstedt, R.Billnert, T.Belgya, R.Borcea, T.Brys, W.Geerts, A.Gook, F.-J.Hambsch, Z.Kish, T.Martinez Perez, A.Oberstedt, L.Szentmiklosi, M.Vidali

New Prompt Fission γ-ray Data in Response to the OECD/NEA High Priority Request

RADIOACTIVITY 252Cf(SF); measured Eγ, Iγ using LaBr3(Ce); deduced prompt γ ray emission spectrum, γ-ray multiplicity. Compared with data and ENDF/B-VII.0.

NUCLEAR REACTIONS 235U(n, F), E=thermal; measured Eγ, Iγ using LaBr3(Ce); deduced prompt γ ray emission spectrum, γ-ray multiplicity. Compared with data and ENDF/B-VII.0.

doi: 10.1016/j.nds.2014.08.062
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset31729.


2014OB05      Phys.Rev. C 90, 024618 (2014)

S.Oberstedt, R.Billnert, T.Belgya, T.Brys, W.Geerts, C.Guerrero, F.-J.Hambsch, Z.Kis, A.Moens, A.Oberstedt, G.Sibbens, L.Szentmiklosi, D.Vanleeuw, M.Vidali

High-precision prompt-γ-ray spectral data from the reaction 241Pu(nth, f)

NUCLEAR REACTIONS 241Pu(n, F), E=thermal; measured prompt fission Eγ, Iγ (PFGS) at 10 MW research reactor of the Budapest Neutron Centre; deduced γ-ray multiplicity, average and total γ energy. Comparison with ENDF/B-VII.1 evaluation. Discussed underestimation of the prompt-γ heating in nuclear reactors.

doi: 10.1103/PhysRevC.90.024618
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset31747.


2013BI02      Phys.Rev. C 87, 024601 (2013)

R.Billnert, F.-J.Hambsch, A.Oberstedt, S.Oberstedt

New prompt spectral γ-ray data from the reaction 252Cf(sf) and its implication on present evaluated nuclear data files

RADIOACTIVITY 252Cf(SF); measured prompt Eγ, Iγ using cerium-doped LaBr3 and CeBr3 scintillation detectors.; deduced prompt fission γ-ray yield and multiplicity, average and total energy. Comparison with previous experimental studies, and with ENDF/B-VII.0, ENDF/B-VII.1 evaluated libraries.

doi: 10.1103/PhysRevC.87.024601
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset23197.


2013OB02      Phys.Rev. C 87, 051602 (2013)

A.Oberstedt, T.Belgya, R.Billnert, R.Borcea, T.Brys, W.Geerts, A.Gook, F.-J.Hambsch, Z.Kis, T.Martinez, S.Oberstedt, L.Szentmiklosi, K.Takacs, M.Vidali

Improved values for the characteristics of prompt-fission γ-ray spectra from the reaction 235U(nth, f)

NUCLEAR REACTIONS 235U(n, F), E=thermal; measured prompt Eγ, Iγ, fission fragments, γγ-, (fragment)γ-coin, time-of-flight, γ-ray multiplicity at KFKI, Budapest facility; deduced average emission yield of prompt-fission γ rays. Comparison with evaluated data in ENDF/B-VII.1, and previous experimental results.

doi: 10.1103/PhysRevC.87.051602
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset31729.


2012OB01      Ann.Nucl.Energy 43, 26 (2012)

S.Oberstedt, A.Oberstedt, E.Birgersson, I.Fabry, F.J.Hambsch, N.Kornilov, G.Lovestam, A.Tudora

First results on the neutron-induced fission cross-section of 231Pa for incident neutron energies En >17 MeV

NUCLEAR REACTIONS 231Pa(n, F), E=15-20.9 MeV; measured fission fragments, Eα, Iα; deduced σ and uncertainties. Comparison with experimental data, calculations, ENDF/B-VII.

doi: 10.1016/j.anucene.2011.12.023
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset23159.


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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2011HA55      J.Korean Phys.Soc. 59, 1654s (2011)

F.-J.Hambsch, S.Oberstedt, A.Al-Adil, R.Borcea, A.Oberstedt, A.Tudora, Sh.Zeynalov

Investigation of the Fission Process at IRMM

RADIOACTIVITY 252Cf(SF); measured decay products, En, In, Eγ, Iγ also using 2ν2E VERDI spectrometer; deduced prompt neutron multiplicity vs fragment mass, TKE.

NUCLEAR REACTIONS 234,238U(n, F), E=0.2-5 MeV; measured fission fragments around vibrational resonance; deduced anisotropy. Compared with other data. 231Pa(n, F), E=0-21 MeV; measured fission fragments; deduced σ; calculated σ. Compared with other data, ENDF/B-VII. 233,235U(n, F), E=thermal; measured prompt neutron multiplicity vs TKE; calculated prompt neutron multiplicity vs TKE using PbP (Point by Point model - improvement of Madland and Nix)

doi: 10.3938/jkps.59.1654
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2010BO26      J.Phys.:Conf.Ser. 205, 012050 (2010)

R.Borcea, R.Billnert, W.Geerts, F.-J.Hambsch, R.J.Tornin, J.Karlsson, A.Oberstedt, S.Oberstedt

Measurement of prompt gamma-ray emission in fission

doi: 10.1088/1742-6596/205/1/012050
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2009BI01      Nucl.Phys. A817, 1 (2009)

E.Birgersson, A.Oberstedt, S.Oberstedt, F.-J.Hambsch

Properties of the reaction 238U(n, f) at the vibrational resonances

NUCLEAR REACTIONS 238U(n, F), E=0.9-2.0 MeV; measured/analyzed fission fragment mass yields and kinetic energy distributions; discussed different fission mode contributions. Comparison with other data. Statistical model used.

doi: 10.1016/j.nuclphysa.2008.12.001
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2007BI24      Nucl.Phys. A791, 1 (2007)

E.Birgersson, S.Oberstedt, A.Oberstedt, F.-J.Hambsch, D.Rochman, I.Tsekhanovich, S.Raman

Light fission-fragment mass distribution from the reaction 251Cf(nth, f)

NUCLEAR REACTIONS 251Cf(n, X), E=thermal; measured light fission fragment yields, mass and energy distributions.

doi: 10.1016/j.nuclphysa.2007.04.018
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2007OB01      Nucl.Instrum.Methods Phys.Res. A570, 51 (2007)

A.Oberstedt, S.Oberstedt

Energy degrader technique for light-charged particle spectroscopy at LOHENGRIN

NUCLEAR REACTIONS 235U(n, F), E=thermal; measured light charged particles energy distribution following ternary fission. Energy degrader technique.

doi: 10.1016/j.nima.2006.10.004
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2007OB02      Phys.Rev.Lett. 99, 042502 (2007)

A.Oberstedt, S.Oberstedt, M.Gawrys, N.Kornilov

Identification of a Shape Isomer in 235U

NUCLEAR REACTIONS 234U(n, γ)235U, E=0.95, 1.27 MeV; measured delayed fission fragment spectra from the decay of the shape isomer, isomeric fission T1/2 and cross section.

doi: 10.1103/PhysRevLett.99.042502
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2005OB04      Nucl.Phys. A761, 173 (2005)

S.Oberstedt, A.Oberstedt, D.Rochman, F.Gonnenwein, I.Tsekhanovich, J.Becker, A.Sartz, H.Bax, F.-J.Hambsch, S.Raman

Light charged particle emission in the reaction 251Cf(nth, f)

NUCLEAR REACTIONS 251Cf(n, F), E=thermal; measured light charged particle yields, energy distributions following ternary fission; deduced evidence for 34Al, 36Si.

doi: 10.1016/j.nuclphysa.2005.07.006
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2005OB05      Ann.Nucl.Energy 32, 1867 (2005)

S.Oberstedt, A.Oberstedt, F.-J.Hambsch, V.Fritsch, G.Lovestam, N.Kornilov

New results on the neutron-induced fission cross-section of 231Pa for incident neutron energies En = 0.8-3.5 MeV

NUCLEAR REACTIONS 231Pa(n, F), E=0.8-3.5 MeV; measured fission σ. Comparison with previous results.

doi: 10.1016/j.anucene.2005.07.005
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2004TO08      Nucl.Phys. A733, 3 (2004)

F.Tovesson, E.Birgersson, M.Fleneus, B.Fogelberg, V.Fritsch, C.Gustafsson, F.-J.Hambsch, A.Oberstedt, S.Oberstedt, E.Ramstrom, A.Tudora, G.Vladuca

233Pa(n, f) cross section up to En = 8.5 MeV

NUCLEAR REACTIONS 233Pa(n, F), E=1.0-8.5 MeV; measured fission σ vs neutron energy. Comparison with evaluated data and model predictions.

doi: 10.1016/j.nuclphysa.2003.11.054
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2004VL01      Phys.Rev. C 69, 021604 (2004)

G.Vladuca, F.-J.Hambsch, A.Tudora, S.Oberstedt, F.Tovesson, A.Oberstedt, D.Filipescu

Calculation of the neutron-induced fission cross section of 233Pa

NUCLEAR REACTIONS 233Pa(n, X), (n, n), (n, n'), (n, F), E=0.01-6 MeV; calculated total, elastic, inelastic, and fission σ. Comparison with previous results.

doi: 10.1103/PhysRevC.69.021604
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2004VL02      Nucl.Phys. A740, 3 (2004)

G.Vladuca, F.-J.Hambsch, A.Tudora, S.Oberstedt, A.Oberstedt, F.Tovesson, D.Filipescu

Calculation of the neutron induced fission cross-section of 233Pa up to 20 MeV

NUCLEAR REACTIONS 233Pa(n, F), (n, X), E=0.01-20 MeV; 231,232Pa(n, F), (n, X), E=0.01-6 MeV; analyzed fission and total reaction σ; deduced fission barrier parameters, transmission coefficients. 233Pa(n, n), (n, n'), (n, γ), (n, 2n), (n, 3n), E < 20 MeV; calculated σ. Comparison with previous results.

doi: 10.1016/j.nuclphysa.2004.04.113
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2002BE53      Nucl.Phys. A701, 363c (2002)

U.C.Bergmann, L.Axelsson, J.R.J.Bennett, M.J.G.Borge, R.Catherall, P.V.Drumm, V.N.Fedoseyev, C.Forssen, L.M.Fraile, H.O.U.Fynbo, U.Georg, T.Giles, S.Grevy, P.Hornshoj, B.Jonson, O.C.Jonsson, U.Koster, J.Lettry, K.Markenroth, F.M.Marques, V.I.Mishin, I.Mukha, T.Nilsson, G.Nyman, A.Oberstedt, H.L.Ravn, K.Riisager, G.Schrieder, V.Sebastian, H.Simon, O.Tengblad, F.Wenander, K.Wilhelmsen Rolander

Light Exotic Isotopes: Recent beam developments and physics applications at ISOLDE

RADIOACTIVITY 12Be(β-), (β-n); measured Eβ, β-delayed neutron spectra, T1/2. 14Be(β-); measured β-delayed neutrons, charged particles; deduced decay branching ratios. 9C(β+); measured Ep, Eα following daughter nucleus decay.

doi: 10.1016/S0375-9474(01)01611-6
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2002KL14      Nucl.Instrum.Methods Phys.Res. A489, 282 (2002)

J.Klug, J.Blomgren, A.Atac, B.Bergenwall, S.Dangtip, K.Elmgren, C.Johansson, N.Olsson, S.Pomp, A.V.Prokofiev, J.Rahm, U.Tippawan, O.Jonsson, L.Nilsson, P.-U.Renberg, P.Nadel-Turonski, A.Ringbom, A.Oberstedt, F.Tovesson, V.Blideanu, C.Le Brun, J.F.Lecolley, F.R.Lecolley, M.Louvel, N.Marie, C.Schweitzer, C.Varignon, Ph.Eudes, F.Haddad, M.Kerveno, T.Kirchner, C.Lebrun, L.Stuttge, I.Slypen, A.N.Smirnov, R.Michel, S.Neumann, U.Herpers

SCANDAL - A Facility for Elastic Neutron Scattering Studies in the 50-130 MeV Range

NUCLEAR REACTIONS 12C(n, p), E=96 MeV; 208Pb(n, pX), E=96 MeV; measured Ep. 12C(n, n'), E=96 MeV; measured excitation energy spectrum. 1H(n, n), E=96 MeV; measured σ(θ).

doi: 10.1016/S0168-9002(02)00576-4
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2002TO02      Phys.Rev.Lett. 88, 062502 (2002)

F.Tovesson, F.-J.Hambsch, A.Oberstedt, B.Fogelberg, E.Ramstrom, S.Oberstedt

Neutron-Induced Fission Cross Section of 233Pa between 1.0 and 3.0 MeV

NUCLEAR REACTIONS 233Pa(n, F), E=1.0, 1.6, 2.0, 3.0 MeV; measured fission σ, fragment spectra; deduced fission threshold. Comparison with previous data and model estimates.

doi: 10.1103/PhysRevLett.88.062502
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2001BE51      Nucl.Phys. A692, 427 (2001)

U.C.Bergmann, M.J.G.Borge, R.Boutami, L.M.Fraile, H.O.U.Fynbo, P.Hornshoj, B.Jonson, K.Markenroth, I.Martel, I.Mukha, T.Nilsson, G.Nyman, A.Oberstedt, Y.Prezado Alonso, K.Riisager, H.Simon, O.Tengblad, F.Wenander, K.Wilhelmsen Rolander, and the ISOLDE Collaboration

On the β-Decay of 9C

RADIOACTIVITY 9C(β+) [from O, Ca(p, X)]; measured β-delayed Ep, Eα, pαα-coin, angular correlations. 9B deduced β-branching strengths, decay mechanism features. A=9; deduced β-decay asymmetry. Double-sided silicon strip detectors, mass-separated source.

doi: 10.1016/S0375-9474(01)00650-9
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2001OB04      Nucl.Phys. A690, 284c (2001)

A.Oberstedt

Fusion-Evaporation Reactions and the Nuclear Equation of State

doi: 10.1016/S0375-9474(01)00961-7
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1999BE53      Nucl.Phys. A658, 129 (1999)

U.C.Bergmann, L.Axelsson, M.J.G.Borge, V.N.Fedoseyev, C.Forssen, H.O.U.Fynbo, S.Grevy, P.Hornshoj, Y.Jading, B.Jonson, U.Koster, K.Markenroth, F.M.Marques, V.I.Mishin, T.Nilsson, G.Nyman, A.Oberstedt, H.L.Ravn, K.Riisager, G.Schrieder, V.Sebastian, H.Simon, O.Tengblad, F.Wenander, K.Wilhelmsen Rolander, and the ISOLDE Collaboration

New Information on β-Delayed Neutron Emission from 12, 14Be

RADIOACTIVITY 12,14Be(β-) [from 1 GeV p on UC target]; measured β-delayed neutrons, βn and nn time correlations. 12,14Be deduced neutron emission probabilities, branching ratios. Neutron long counters, mass-separated sources.

doi: 10.1016/S0375-9474(99)00348-6
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1997LA11      Phys.Rev. C55, 1900 (1997)

L.Lassen, P.von Neumann-Cosel, A.Oberstedt, G.Schrieder

Limiting Excitation Energy in Fusion-Evaporation Reactions ( Question )

NUCLEAR REACTIONS 40Ca(40Ar, X), E=5-30 MeV/nucleon; measured fusion-evaporation residue(n)-coin, neutron multiplicities, excitation energies per nucleon; deduced such studies cannot resolve hot nuclei limiting excitation energy related question.

doi: 10.1103/PhysRevC.55.1900
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1996OB03      Nucl.Instrum.Methods Phys.Res. A370, 206 (1996)

A.Oberstedt, P.Davidsson, P.Delsing, B.Jonson, R.Kroc, G.Nyman

Silicon Microcalorimeters for High Energy Resolution Spectroscopy

RADIOACTIVITY 109Cd(EC); measured I(ce), γ spectra; deduced detectors sensitivity. Si microcalorimeters.

doi: 10.1016/0168-9002(95)01090-4
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1994OB04      Nucl.Instrum.Methods Phys.Res. A340, 379 (1994)

A.Oberstedt, F.-J.Hambsch

LISA - a Powerful Program Package for Listmode and Spectral Data Analysis

doi: 10.1016/0168-9002(94)90115-5
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1993GE08      Z.Phys. A347, 117 (1993)

R.Gentner, D.Bellm, L.Lassen, A.Oberstedt, A.Giorni, A.Lleres, J.-B.Viano, B.Cheynis, B.Chambon, D.Drain

Light-Particle Emission versus Evaporation Residue Formation in Collisions of 40Ar on (nat)Ca at 30 MeV/u

NUCLEAR REACTIONS 40Ca(40Ar, X), E=30 MeV/nucleon; measured (evaporation residue)n-, (evaporation residue)(light charged particle)-coin; deduced light particle multiplicities, missing mass interrelation. Quantal phase space model. Thick self-supporting Ca foil target.

doi: 10.1007/BF01284678
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1992OB04      Nucl.Phys. A548, 525 (1992)

A.Oberstedt, P.von Neumann-Cosel, A.Richter, W.Rosch, G.Schrieder, D.Bellm, R.Gentner, K.Keller, L.Lassen, U.Seibert, D.Hilscher, M.Lehmann

Light-Particle Emission and Heavy-Residue Formation in the Fusion-Like Reactions 40Ar + 40Ca at 15 MeV/u and 28Si + 28Si at 20 MeV/u

NUCLEAR REACTIONS 40Ar(40Ca, X), E=15 MeV/nucleon; 28Si(28Si, X), E=20 MeV/nucleon; measured evaporation residue σ(A, Z, multiplicity, θ), light particle σ(E, θ); deduced light particle equilibrium, preequilibrium multiplicities. Discussed mass balance, residue formation. Quantal phase space model.

doi: 10.1016/0375-9474(92)90699-K
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1985OB02      Phys.Rev. C32, 2158 (1985)

A.Oberstedt, D.Bohle, G.Kuchler, A.Richter, E.Spamer, C.Rangacharyulu

Ground State M1 Transition Strength of the 1.115 MeV Level in 65Cu

NUCLEAR REACTIONS 65Cu(e, e'), E=24.6-140 MeV; measured σ(E(e')), form factors. 65Cu transitions deduced B(λ), Γγ(M1).

doi: 10.1103/PhysRevC.32.2158
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