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NSR database version of May 24, 2024.

Search: Author = J.Wilhelmy

Found 95 matches.

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2024GO04      Phys.Rev. C 109, 044604 (2024)

M.E.Gooden, R.C.Malone, T.A.Bredeweg, E.M.Bond, S.W.Finch, C.R.Howell, Krishichayan, A.P.D.Ramirez, J.A.Silano, M.A.Stoyer, A.P.Tonchev, W.Tornow, D.Vieira, J.B.Wilhelmy

Energy dependence of fission product yields in the second-chance fission region

doi: 10.1103/PhysRevC.109.044604
Citations: PlumX Metrics


2024MU04      Phys.Rev. C 109, 044318 (2024)

M.Muscher, E.Litvinova, R.Schwengner, T.Beck, D.Bemmerer, F.Fiedler, S.W.Finch, U.Friman-Gayer, S.Hammer, J.Isaak, R.V.F.Janssens, A.R.Junghans, N.Kelly, F.Kluwig, Krishichayan, S.E.Muller, O.Papst, K.Romer, D.Savran, M.Scheck, T.Schuttler, J.Sinclair, T.Szucs, W.Tornow, A.Wagner, J.Wilhelmy, A.Zilges

Low-lying dipole response of 64Ni

doi: 10.1103/PhysRevC.109.044318
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2023RA05      Phys.Rev. C 107, 054608 (2023)

A.P.D.Ramirez, J.A.Silano, R.C.Malone, M.A.Stoyer, A.P.Tonchev, M.E.Gooden, J.B.Wilhelmy, S.W.Finch, C.R.Howell, Krishichayan, W.Tornow

Fission product yields from the 238U(n, f) reaction at En = 4.6 MeV

NUCLEAR REACTIONS 238U(n, F)86mKr/86Kr/88Kr/89Rb/91Sr/92Sr/94Y/97Nb/101Mo/104Tc/105Ru/129Sb/131Te/131Sb/133I/134Te/134I/135Xe/138Xe/138Cs/139Ba/141Ba/142Ba/142La/146Ce/146Pr/147Pr/84As/86Se/86Br/87Br/88Br/89Kr/90Kr/91Kr/91Rb/92Kr/93Kr/93Rb/93Sr/94Rb/94Sr/95Sr/96Sr/96mY/96Y/97mY/98Sr/98mY/99Zr/99Nb/100Y/100Zr/101Zr/101Nb/102Zr/103Tc/106Tc/130Sn/132Sn/133Sb/134mSb/135Te/136Te/136mI/137Xe/138I/139Xe/140Xe/140Cs/141Xe/142Cs/142Ba/143Cs/143Ba/144La/145Ce/148La, E=4.6 MeV; measured neutron time-of-flight, Eγ, Iγ; deduced cumulative fission product yields. Comparison to experimental and evaluated data from ENDF/B-VIII.0 and JEFF-3.3 libraries and with theoretical models using the GEF and FREYA codes. Cyclic activation technique using the RApid Belt-driven Irradiated Target Transfer System (RABITTS) at the 10 MV tandem Van de Graaff accelerator (TUNL).

doi: 10.1103/PhysRevC.107.054608
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2022PR02      Phys.Rev. C 105, 034319 (2022)

S.Prill, A.Bohn, V.Everwyn, G.Hafner, F.Heim, M.Spieker, M.Weinert, J.Wilhelmy, A.Zilges

Lifetime analysis of 128, 130Te via the Doppler-shift attenuation method

NUCLEAR REACTIONS 128Te(p, p'γ), E=8.8 MeV; 130Te(p, p'γ), E=10 MeV; measured Ep, Ip, Eγ, Iγ, pγ-coin. 128,130Te; deduced levels, J, π, T1/2 of excited states, B(E2), B(M1). p-γ-coincidence DSA technique for half-life determination. Comparison to shell-model calculations performed with NuShellX in the jj55pn model space. Combined SONIC (Si-detectors) and HORUS (HPGe-detectors) arrays.

doi: 10.1103/PhysRevC.105.034319
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Data from this article have been entered in the XUNDL database. For more information, click here.


2022SA39      Phys.Rev. C 106, 044324 (2022)

D.Savran, J.Isaak, R.Schwengner, R.Massarczyk, M.Scheck, W.Tornow, G.Battaglia, T.Beck, S.W.Finch, C.Fransen, U.Friman-Gayer, R.Gonzalez, E.Hoemann, R.V.F.Janssens, S.R.Johnson, M.D.Jones, J.Kleemann, Krishichayan, D.R.Little, D.O'Donnell, O.Papst, N.Pietralla, J.Sinclair, V.Werner, O.Wieland, J.Wilhelmy

Model-independent determination of the dipole response of 66Zn using quasimonoenergetic and linearly polarized photon beams

NUCLEAR REACTIONS 66Zn(polarized γ, γ'), E=5.6-9.9 MeV; measured Eγ, Iγ, γγ-coin; deduced elastic, inelastic and total photoabsorption σ(E), average ground-state branching ratio, ratio of M1 to E1 elastic σ(E). Comparison to other experimental results. γ3-detector setup consisting of HPGe and LaBr3:Ce detectors at HIγS facility of the TUNL at Duke University.

doi: 10.1103/PhysRevC.106.044324
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2021FA09      Eur.Phys.J. A 57, 191 (2021)

M.Farber, M.Weinert, M.Muscher, M.Spieker, J.Wilhelmy, A.Zilges

Low-energy excitations and γ-decay branchings in 124Sn via (p, p'γ) at Ep = 15 MeV

NUCLEAR REACTIONS 124Sn(p, p'), E=15 MeV; measured reaction products, Ep, Ip, Eγ, Iγ, p-γ-coin.; deduced σ(θ), ratio of γ-ray yields, γ-ray decay branching, level energies, J, π, isospin splitting of the Pygmy Dipole Resonance (PDR). The combined spectroscopy setup SONIC@HORUS at the Tandem accelerator of the University of Cologne.

doi: 10.1140/epja/s10050-021-00422-x
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2021SC06      Phys.Rev. C 103, 024312 (2021)

R.Schwengner, R.Massarczyk, M.Scheck, W.Tornow, G.Battaglia, T.Beck, D.Bemmerer, N.Benouaret, R.Beyer, M.Butterling, F.Fiedler, S.W.Finch, C.Fransen, U.Friman-Gayer, A.Frotscher, R.Gonzalez, M.Grieger, A.Hartmann, T.Hensel, E.Hoemann, H.Hoffmann, R.V.F.Janssens, S.Johnson, M.D.Jones, A.R.Junghans, N.Kelly, J.Kleemann, Krishichayan, D.R.Little, F.Ludwig, S.E.Muller, D.O'Donnell, O.Papst, E.Pirovano, J.Sinclair, M.P.Takacs, S.Turkat, S.Urlass, A.Wagner, V.Werner, O.Wieland, J.Wilhelmy

Electric and magnetic dipole strength in 66Zn

NUCLEAR REACTIONS 66Zn(γ, γ'), (polarized γ, γ'), E=7.5, 13.4, MeV unpolarized bremsstrahlung from γELBE facility, and E=4.3, 4.4, 4.55, 4.7, 4.85, 5.0, 5.15, 5.3, 5.45, 5.6, 5.75, 5.9, 6.1, 6.3, 6.5, 6.7, 6.9, 7.1, 7.3, 7.5, 7.7, 7.9, 8.15, 8.4, 8.65, 8.9, 9.15, 9.4, 9.65, 9.9 MeV quasimonoenergetic and linearly polarized photon beams from HIγS facility; measured Eγ, Iγ, γγ(θ), γ(linear polarization) using four escape-suppressed HPGe detectors at γELBE and using two HPGe detectors at HIγS. 66Zn; deduced 128 J=1 levels up to 11.02 MeV excitation, pygmy dipole resonances (PDR), J, π, energy-integrated scattering σ, Γ02/Γ, photoabsorption σ, photon strength functions, B(M1). Comparison of measured photoabsorption cross sections with experimental values in 54Fe(γ, γ'), and with calculations using TALYS code as in the 2019 library, and from the three Lorentz functions (TLO). Comparison of B(M1) strengths with shell-model calculations using the jj44c Hamiltonian. Comparison of deduced photon strength functions with those from 64Ni(p, p'γ).

doi: 10.1103/PhysRevC.103.024312
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetL0269.


2021WE16      Phys.Rev.Lett. 127, 242501 (2021)

M.Weinert, M.Spieker, G.Potel, N.Tsoneva, M.Muscher, J.Wilhelmy, A.Zilges

Microscopic Structure of the Low-Energy Electric Dipole Response of 120Sn

NUCLEAR REACTIONS 119Sn(d, p), E=8.5 MeV; measured reaction products, Eγ, Iγ; deduced γ-ray yields, pygmy dipole resonance. Detailed structure input from energy-density functional plus quasiparticle-phonon model theory with reaction theory.

doi: 10.1103/PhysRevLett.127.242501
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Data from this article have been entered in the XUNDL database. For more information, click here.


2020MU11      Phys.Rev. C 102, 014317 (2020)

M.Muscher, J.Wilhelmy, R.Massarczyk, R.Schwengner, M.Grieger, J.Isaak, A.R.Junghans, T.Kogler, F.Ludwig, D.Savran, D.Symochko, M.P.Takacs, M.Tamkas, A.Wagner, A.Zilges

High-sensitivity investigation of low-lying dipole strengths in 120Sn

NUCLEAR REACTIONS 120Sn(γ, γ'), E=9.5 MeV bremsstrahlung beam; measured Eγ, Iγ, γ(θ) using four HPGe detectors at the γELBE facility of Helmholtz-Zentrum Dresden-Rossendorf. 120Sn; deduced levels, pygmy dipole resonances (PDR), J, π, Γ02/Γ, photoabsorption σ(Eγ), B(E1), Thomas-Reiche-Kuhn sum rule using statistical model with constant-temperature level density. Comparison with experimental results for 120Sn(p, p').

doi: 10.1103/PhysRevC.102.014317
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetG0081. Data from this article have been entered in the XUNDL database. For more information, click here.


2020SC04      Phys.Rev. C 101, 045806 (2020)

P.Scholz, M.Guttormsen, F.Heim, A.C.Larsen, J.Mayer, D.Savran, M.Spieker, G.M.Tveten, A.V.Voinov, J.Wilhelmy, F.Zeiser, A.Zilges

Primary γ-ray intensities and γ-strength functions from discrete two-step γ-ray cascades in radiative proton-capture experiments

NUCLEAR REACTIONS 63,65Cu(p, γ), E=2.0, 3.5 MeV; measured Eγ, Iγ, γγ-coin, primary γ rays, two-step γ-ray cascades (TSCs) using the HORUS array of 14 HPGe detectors at the Institute for Nuclear Physics, University of Cologne. 64,66Zn; deduced levels, J, π, primary γ-ray intensities, dipole strength functions, and absolute γ-ray strength functions. Comparison with theoretical predictions, generalized Brink-Axel hypothesis, and other experimental results. Relevance of reaction rates of radiative capture reactions to nucleosynthesis of heavy nuclei in explosive stellar environments.

doi: 10.1103/PhysRevC.101.045806
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Data from this article have been entered in the XUNDL database. For more information, click here.


2020SI09      Eur.Phys.J. A 56, 105 (2020)

J.Sinclair, M.Scheck, S.W.Finch, Krishichayan, U.Friman-Gayer, W.Tornow, G.Battaglia, T.Beck, R.Chapman, M.M.R.Chishti, Ch.Fransen, R.Gonzales, E.Hoemann, J.Isaak, R.V.F.Janssens, D.A.Jaroszynski, S.Johnson, M.D.Jones, J.M.Keatings, N.Kelly, J.Kleemann, D.Little, B.Loher, K.R.Mashtakov, M.Muscher, D.O'Donnell, O.Papst, E.E.Peters, D.Savran, M.Schilling, R.Schwengner, P.Spagnoletti, M.Spieker, V.Werner, J.Wilhelmy, O.Wieland, S.W.Yates, A.Zilges

Firm spin and parity assignments for high-lying, low-spin levels in stable Si isotopes

doi: 10.1140/epja/s10050-020-00118-8
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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.


2019FA10      Acta Phys.Pol. B50, 475 (2019)

M.Farber, A.Bohn, V.Everwyn, M.Muscher, S.G.Pickstone, S.Prill, P.Scholz, M.Spieker, M.Weinert, J.Wilhelmy, A.Zilges

Study of Dipole Excitations in 124Sn via (p, p' γ) at 15 MeV

NUCLEAR REACTIONS 124Sn(p, p'), E=15 MeV; measured Ep, Eγ, Iγ, pγ-coin. 124Sn; deduced levels, J, π, γ-decay branching ratios for low-spin states. Combined SONIC (Si-detectors) and HORUS (HPGe-detectors) arrays. Comparison to (γ, γ') and (α, α') experimental data.

doi: 10.5506/aphyspolb.50.475
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2019RI02      Phys.Rev. C 100, 021301R (2019)

P.C.Ries, H.Pai, T.Beck, J.Beller, M.Bhike, V.Derya, U.Gayer, J.Isaak, B.Loher, Krishichayan, L.Mertes, N.Pietralla, C.Romig, D.Savran, M.Schilling, W.Tornow, S.Typel, V.Werner, J.Wilhelmy, A.Zilges, M.Zweidinger

Valence-shell dependence of the pygmy dipole resonance: E1 strength difference in 50, 54Cr

NUCLEAR REACTIONS 50,54Cr(γ, γ'), (polarized γ, γ'), E=7.5, 9.5 MeV bremsstrahlung beam from Darmstadt, and 5.5-9.8 MeV Compton-scattered polarized beam from TUNL; measured Eγ, Iγ, azimuthal angular distributions, integrated cross sections using nuclear resonance fluorescence (NRF) method at the Darmstadt High Intensity Photon Setup (DHIPS), and at the High-Intensity γ-ray Source facility (HIγS) of TUNL. 50,54Cr; deduced levels, pygmy dipole resonances (PDR), J, π, widths of transitions to g.s., branching ratios, B(E1), B(M1), B(E2), Thomas-Reiche-Kuhn (TRK) energy-weighted sum rule for 50,52,54Cr; calculated neutron skin thicknesses for 48,49,50,51,52,53,54,55,56Cr.

doi: 10.1103/PhysRevC.100.021301
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Data from this article have been entered in the XUNDL database. For more information, click here.


2019SO22      Acta Phys.Pol. B50, 329 (2019)

P.-A.Soderstrom, G.Suliman, C.A.Ur, D.Balabanski, T.Beck, L.Capponi, A.Dhal, V.Iancu, S.Ilie, M.Iovea, A.Kusoglu, C.Petcu, N.Pietralla, G.V.Turturica, E.Udup, J.Wilhelmy, A.Zilges

High-resolution Gamma-ray Spectroscopy with ELIADE at the Extreme Light Infrastructure

doi: 10.5506/aphyspolb.50.329
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2018WI07      Phys.Rev. C 98, 034315 (2018)

J.Wilhelmy, A.Brown, P.Erbacher, U.Gayer, J.Isaak, Krishichayan, B.Loher, M.Muscher, H.Pai, N.Pietralla, P.Ries, D.Savran, P.Scholz, M.Spieker, W.Tornow, V.Werner, A.Zilges

Investigation of J=1 states and their γ-decay behavior in 52Cr

NUCLEAR REACTIONS 52Cr(polarized γ, γ'), E=5.5-9.2 MeV; measured Eγ, Iγ of primary and secondary γ rays, energy integrated σ in nuclear resonance fluorescence (NRF) experiments using γ3 array at the HIγS-TUNL facility. 52Cr; deduced levels, J, π, Γ0, γ-branching ratios, B(M1), B(E1), summed M1 strength. Comparison with shell model calculations, and previous experimental results.

doi: 10.1103/PhysRevC.98.034315
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Data from this article have been entered in the XUNDL database. For more information, click here.


2017GO11      Phys.Rev. C 96, 024622 (2017)

M.E.Gooden, T.A.Bredeweg, B.Champine, D.C.Combs, S.Finch, A.Hayes-Sterbenz, E.Henry, Krishichayan, R.Rundberg, W.Tornow, J.Wilhelmy, C.Yeamans

Measurement of the 209Bi(n, 4n)206Bi and 169Tm(n, 3n)167Tm cross sections between 23.5 and 30.5 MeV relevant to reaction-in-flight neutron studies at the National Ignition Facility

NUCLEAR REACTIONS 209Bi(n, 4n), 169Tm(n, 3n), E=23.5, 24.9, 25.5, 26.5, 27.5, 28.5, 29.5, 30.5 MeV; measured neutron time-of-flight spectra, σ(E) at the FN tandem accelerator facility of Triangle Universities Nuclear Laboratory (TUNL). Comparison with previous experimental data, evaluated ENDF/B-VII.1, TENDL-2015 and EAF-2010 libraries, and theoretical calculations. Relevance to charged-particle stopping power measurements at the National Ignition Facility.

doi: 10.1103/PhysRevC.96.024622
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset14480.


2017PI13      Nucl.Instrum.Methods Phys.Res. A875, 104 (2017)

S.G.Pickstone, M.Weinert, M.Farber, F.Heim, E.Hoemann, J.Mayer, M.Muscher, S.Prill, P.Scholz, M.Spieker, V.Vielmetter, Ju.Wilhelmy, A.Zilges

Combining α-ray and particle spectroscopy with SONICatHORUS

NUCLEAR REACTIONS 92Mo(p, pγ), E=10.5 MeV; 119Sn(d, pγ), E=10 MeV; 60Ni(p, pγ), E=15 MeV; 94Mo(p, pγ), E=13.5 MeV; measured reaction products, Eγ, Iγ; deduced γ-ray energies, J, π, branching ratios.

doi: 10.1016/j.nima.2017.09.016
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Data from this article have been entered in the XUNDL database. For more information, click here.


2017UL01      Phys.Rev. C 96, 024627 (2017), Erratum Phys.Rev. C 96, 019902 (2017)

J.L.Ullmann, T.Kawano, B.Baramsai, T.A.Bredeweg, A.Couture, R.C.Haight, M.Jandel, J.M.O'Donnell, R.S.Rundberg, D.J.Vieira, J.B.Wilhelmy, M.Krticka, J.A.Becker, A.Chyzh, C.Y.Wu, G.E.Mitchell

Constraining the calculation of 234, 236, 238U (n, γ) cross sections with measurements of the γ-ray spectra at the DANCE facility

NUCLEAR REACTIONS 234U(n, γ), E=31, 77 eV; 236U(n, γ), E=44, 71 eV; 238U(n, γ), E=21, 36, 66, 102 eV; measured Eγ, Iγ for 1/2+ neutron-resonances using the Detector for Advanced Neutron Capture Experiments (DANCE) at Los Alamos Neutron Science Center (LANSC); deduced total radiation widths Γγ of s-wave 1/2+ resonances using different models of photon strength function (PSF) and nuclear level-density (NLD) parametrizations, and significant contribution to Γγ from a resonance structure at Eγ=2-3 MeV, identified with the M1 scissors mode; comparison of measured and summed γ spectra with calculations using the PSF and NLD parameters obtained from the Oslo method, from renormalized Oslo results, from systematics used in the CoH3 code, and from the MGLO and CoH3 models for the E1 strength. 234,236,238U(n, γ), E=1-500 keV; calculated σ(E) and compared with previous experimental data listed in the EXFOR database, and with ENDFB/VII-1 evaluation.

doi: 10.1103/PhysRevC.96.024627
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2016GO02      Nucl.Data Sheets 131, 319 (2016)

M.E.Gooden, C.W.Arnold, J.A.Becker, C.Bhatia, M.Bhike, E.M.Bond, T.A.Bredeweg, B.Fallin, M.M.Fowler, C.R.Howell, J.H.Kelley, Krishichayan, R.Macri, G.Rusev, C.Ryan, S.A.Sheets, M.A.Stoyer, A.P.Tonchev, W.Tornow, D.J.Vieira, J.B.Wilhelmy

Energy Dependence of Fission Product Yields from 235U, 238U and 239Pu for Incident Neutron Energies Between 0.5 and 14.8 MeV

NUCLEAR REACTIONS 235,238U, 239Pu(n, F), E=0.5-14.8 MeV; measured reaction products, Eγ, Iγ; deduced fission yields.

doi: 10.1016/j.nds.2015.12.006
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset14555.


2016PA04      Phys.Rev. C 93, 014318 (2016)

H.Pai, T.Beck, J.Beller, R.Beyer, M.Bhike, V.Derya, U.Gayer, J.Isaak, Krishichayan, J.Kvasil, B.Loher, V.O.Nesterenko, N.Pietralla, G.Martinez-Pinedo, L.Mertes, V.Yu.Ponomarev, P.-G.Reinhard, A.Repko, P.C.Ries, C.Romig, D.Savran, R.Schwengner, W.Tornow, V.Werner, J.Wilhelmy, A.Zilges, M.Zweidinger

Magnetic dipole excitations of 50Cr

NUCLEAR REACTIONS 50Cr(γ, γ'), (polarized γ, γ'), E<9.7 MeV bremsstrahlung; measured Eγ, Iγ, γ(θ), γ-polarization asymmetry, integrated σ, γ-branching ratios. Experiments performed at Darmstadt S-DALINAC and TUNL High Intensity γ-ray Source (HIγS) facilities. 50Cr; deduced levels, J, π, B(M1), reduced widths, configurations, M1 spin-flip transition. Discussed isovector rotation-like oscillations of 1+ states versus scissors-type mode. Comparison with Skyrme quasiparticle random-phase-approximation (QRPA) and the large-scale shell model (LSSM) calculations.

doi: 10.1103/PhysRevC.93.014318
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Data from this article have been entered in the XUNDL database. For more information, click here.


2015BH09      Phys.Rev. C 91, 064604 (2015)

C.Bhatia, B.F.Fallin, M.E.Gooden, C.R.Howell, J.H.Kelley, W.Tornow, C.W.Arnold, E.Bond, T.A.Bredeweg, M.M.Fowler, W.Moody, R.S.Rundberg, G.Y.Rusev, D.J.Vieira, J.B.Wilhelmy, J.A.Becker, R.Macri, C.Ryan, S.A.Sheets, M.A.Stoyer, A.P.Tonchev

Exploratory study of fission product yields of neutron-induced fission of 235U, 238U, and 239Pu at 8.9 MeV

NUCLEAR REACTIONS 235,238U, 239Pu(n, F), E=8.9 MeV; measured Eγ, Iγ of fission products of 92Sr, 97Zr, 99Mo, 105Ru, 132Te, 133I, 140Ba, 143Ce, 147Nd at TUNL facility; deduced absolute fission product yields by γ activation method. Comparison with previous experimental results.

doi: 10.1103/PhysRevC.91.064604
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset14423.


2015JA07      Eur.Phys.J. A 51, 179 (2015)

M.Jandel, B.Baramsai, E.Bond, G.Rusev, C.Walker, T.A.Bredeweg, M.B.Chadwick, A.Couture, M.M.Fowler, A.Hayes, T.Kawano, S.Mosby, I.Stetcu, T.N.Taddeucci, P.Talou, J.L.Ullmann, D.J.Vieira, J.B.Wilhelmy

Capture and fission with DANCE and NEUANCE

doi: 10.1140/epja/i2015-15179-7
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2015WA18      Phys.Rev. C 92, 014324 (2015)

C.L.Walker, M.Krticka, B.Baramsai, F.Becvar, T.A.Bredeweg, A.Chyzh, R.C.Haight, M.Jandel, J.Kroll, G.E.Mitchell, J.M.O'Donnell, R.S.Rundberg, J.L.Ullmann, S.Valenta, J.B.Wilhelmy

Measurement of the 97Mo(n, γ) reaction with the DANCE γ calorimeter array

NUCLEAR REACTIONS 97Mo(n, γ), E<1.7 eV. Measured Eγ, Iγ, multistep gamma cascades (MSCs) with the DANCE array of 160 BaF2 detectors at the LANSCE-LANL facility. 98Mo; deduced neutron resonances, J, π, neutron widths, photon-strength functions (PSFs), simulated total radiation width of resonances for all considered model combinations. Analysis using DICEBOX statistical computer code. 93,95,99Mo, 94Nb, 100Ru; deduced photon-strength functions (PSFs) using averaged s-wave resonance spacings D0 from literature. Comparison with statistical model calculations.

doi: 10.1103/PhysRevC.92.014324
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Data from this article have been entered in the XUNDL database. For more information, click here.


2014BH11      Nucl.Data Sheets 119, 324 (2014)

C.Bhatia, B.Fallin, C.Howell, W.Tornow, M.Gooden, J.Kelley, C.Arnold, E.Bond, T.Bredeweg, M.Fowler, W.Moody, R.Rundberg, G.Rusev, D.Vieira, J.Wilhelmy, J.Becker, R.Macri, C.Ryan, S.Sheets, M.Stoyer, A.Tonchev

Fission Product Yield Study of 235U, 238U and 239Pu Using Dual-Fission Ionization Chambers

NUCLEAR REACTIONS 235,238U, 239Pu(n, F), E=4.6, 9.0, 14.5 MeV; measured Eγ, Iγ(t) from fission fragments using dual fission chamber; deduced fission products yield ratio. Compared with other data and libraries.

doi: 10.1016/j.nds.2014.08.089
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 dataset14423.


2014KR08      Nucl.Data Sheets 119, 158 (2014)

J.Kroll, U.Agvaanluvsan, B.Baramsai, J.A.Becker, F.Becvar, T.A.Bredeweg, A.Chyzh, A.Couture, D.Dashdorj, R.C.Haight, M.Jandel, A.L.Keksis, M.Krticka, G.E.Mitchell, J.M.O'Donnell, W.Parker, R.S.Rundberg, J.L.Ullmann, S.Valenta, D.J.Vieira, C.L.Walker, J.B.Wilhelmy, J.M.Wouters, C.Y.Wu

Systematics of Scissors Mode in Gd Nuclei from Experiments with the DANCE Detector

NUCLEAR REACTIONS 152,154,155,156,157,158Gd(n, γ), E=subthermal-1 MeV; measured Eγ, Iγ using ToF LANSCE/DANCE array (BaF2); calculated γ emission, γ cascades using MSC code DICEBOX with fitted parameters and all models of RIPL-3; deduced M1 scissors mode vibrations; calculated scissors mode B(M1) vs deformation for (n, γ), (γ, γ') and 3He-induced reactions data.

doi: 10.1016/j.nds.2014.08.044
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2014UL01      Phys.Rev. C 89, 034603 (2014)

J.L.Ullmann, T.Kawano, T.A.Bredeweg, A.Couture, R.C.Haight, M.Jandel, J.M.O'Donnell, R.S.Rundberg, D.J.Vieira, J.B.Wilhelmy, J.A.Becker, A.Chyzh, C.Y.Wu, B.Baramsai, G.E.Mitchell, M.Krticka

Cross section and γ-ray spectra for 238U(n, γ) measured with the DANCE detector array at the Los Alamos Neutron Science Center

NUCLEAR REACTIONS 238U(n, γ), E=1-500 keV; measured Eγ, Iγ, σ(E) using DANCE array at LANSCE-LLNL spallation neutron source facility. Comparison with Hauser-Feshbach calculations using CoH3 computer code and cascade spectra calculations by DICEBOX code using level data from ENSDF database, with evaluated cross section in ENDF/B-VII.1, and with previous experimental data. M1 scissors mode contribution to the radiative strength function.

doi: 10.1103/PhysRevC.89.034603
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset14310.


2014UL02      Nucl.Data Sheets 119, 22 (2014)

J.L.Ullmann, S.Mosby, T.A.Bredeweg, A.J.Couture, R.C.Haight, M.Jandel, T.Kawano, J.M.O'Donnell, R.S.Rundberg, D.J.Vieira, J.B.Wilhelmy, C.-Y.Wu, J.A.Becker, A.Chyzh, B.Baramsai, G.E.Mitchell, M.Krticka

Neutron Capture Cross Sections and Gamma Emission Spectra from Neutron Capture on 234, 236, 238U Measured with DANCE

NUCLEAR REACTIONS 234,236,238U(n, γ), E=10 eV-700 keV; measured Eγ, Iγ using DANCE at LANSCE; deduced two-step cascade γ-ray spectrum. 238U deduced σ. Cross sections compared with data and ENDF/B-VII.

doi: 10.1016/j.nds.2014.08.008
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset14310.


2013KR07      Phys.Scr. T154, 014009 (2013)

J.Kroll, F.Becvar, M.Krticka, S.Valenta, B.Baramsai, G.E.Mitchell, C.L.Walker, T.A.Bredeweg, A.Couture, R.C.Haight, M.Jandel, J.M.O'Donnell, R.S.Rundberg, J.L.Ullmann, D.J.Vieira, J.B.Wilhelmy, J.M.Wouters, J.A.Becker, A.Chyzh, D.Dashdorj, W.Parker, C.Y.Wu

Scissors mode of Gd nuclei measured, with the DANCE detector

NUCLEAR REACTIONS 152,154,155,156,157,158Gd(n, γ), E<1 MeV; measured reaction products, Eγ, Iγ; deduced photon strength, summed scissors-mode strength B(M1). Comparison with available data.

doi: 10.1088/0031-8949/2013/T154/014009
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2013UL01      Phys.Rev. C 87, 044607 (2013)

J.L.Ullmann, E.M.Bond, T.A.Bredeweg, A.Couture, R.C.Haight, M.Jandel, T.Kawano, H.Y.Lee, J.M.O'Donnell, A.C.Hayes, I.Stetcu, T.N.Taddeucci, P.Talou, D.J.Vieira, J.B.Wilhelmy, J.A.Becker, A.Chyzh, J.Gostic, R.Henderson, E.Kwan, C.Y.Wu

Prompt γ-ray production in neutron-induced fission of 239Pu

NUCLEAR REACTIONS 239Pu(n, F), E<30 keV; measured prompt Eγ, Iγ, fission σ(E), Gamma-ray multiplicity using DANCE γ-ray calorimeter at LANSCE facility; deduced average multiplicity, average total energy. GEANT4 simulation of DANCE detector. Fission Tagging. Comparison with Monte Carlo Hauser-Feshbach (MCHF) calculations, previous experimental studies, and with ENDF/B-VII.

doi: 10.1103/PhysRevC.87.044607
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2012BR11      Phys.Rev. C 86, 014617 (2012)

P.A.Bradley, G.P.Grim, A.C.Hayes, Gerard Jungman, R.S.Rundberg, J.B.Wilhelmy, G.M.Hale, R.C.Korzekwa

Neutron reactions in the hohlraum at the LLNL National Ignition Facility

NUCLEAR REACTIONS 197Au, 238U(n, γ), 197Au(n, n')197mAu, 197Au, 238U(n, 2n), (n, 3n), (n, 4n), 238U(n, F), E=0-30 MeV; analyzed techniques to measure neutron yields and neutron fluence spectra from (d, t) reaction at the LLNL National Ignition Facility for deuterium-tritium (DT) inertial confinement fusion. Neutron diagnostics and dosimetry.

doi: 10.1103/PhysRevC.86.014617
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2012JA16      Phys.Rev.Lett. 109, 202506 (2012)

M.Jandel, T.A.Bredeweg, E.M.Bond, M.B.Chadwick, A.Couture, J.M.O'Donnell, M.Fowler, R.C.Haight, T.Kawano, R.Reifarth, R.S.Rundberg, J.L.Ullmann, D.J.Vieira, J.M.Wouters, J.B.Wilhelmy, C.Y.Wu, J.A.Becker

New Precision Measurements of the 235U(n, γ) Cross Section

NUCLEAR REACTIONS 235U(n, γ), (n, F), E=0.000004-1 MeV; measured reaction products, Eγ, Iγ; deduced thick-target σ. Comparison with ENDF/B-VII, JENDL-4 evaluated libraries and available data.

doi: 10.1103/PhysRevLett.109.202506
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset14149.


2011CH31      Phys.Rev. C 84, 014306 (2011)

A.Chyzh, B.Baramsai, J.A.Becker, F.Becvar, T.A.Bredeweg, A.Couture, D.Dashdorj, R.C.Haight, M.Jandel, J.Kroll, M.Krticka, G.E.Mitchell, J.M.O'Donnell, W.Parker, R.S.Rundberg, J.L.Ullmann, D.J.Vieira, C.L.Walker, J.B.Wilhelmy, J.M.Wouters, C.Y.Wu

Measurement of the 157Gd(n, γ) reaction with the DANCE γ calorimeter array

NUCLEAR REACTIONS 157Gd(n, γ), E=<300 eV; measured Eγ, Iγ using DANCE γ calorimeter. 158Gd; deduced E1, M1 and E1 photon strength distributions, resonances, multiplicity, spin distribution, multistep cascade (MSC) spectra. Statistical model calculations using DICEBOX code. Scissors mode.

doi: 10.1103/PhysRevC.84.014306
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2011RA08      Phys.Rev. C 83, 044621 (2011)

R.Raut, A.S.Crowell, B.Fallin, C.R.Howell, C.Huibregtse, J.H.Kelley, T.Kawano, E.Kwan, G.Rusev, A.P.Tonchev, W.Tornow, D.J.Vieira, J.B.Wilhelmy

Cross-section measurements of neutron-induced reactions on GaAs using monoenergetic beams from 7.5 to 15 MeV

NUCLEAR REACTIONS 69Ga(n, 2n)68Ga, 69Ga(n, p)69mZn, 71Ga(n, p)71mZn, 75As(n, 2n)74As, 75As(n, p)75Ge, E=7.5, 8.0, 8.5, 9.5, 10.2, 11.0, 11.5, 12.5, 13.25, 14.0, 14.5, 15.0 MeV; measured Eγ, Iγ; deduced half-lives and σ. 27Al(n, α)24Na, 197Au(n, 2n)196Au, E=7.5-14.5 MeV; measured σ and used as monitor reactions. Comparison of measured cross sections with previous data and statistical model calculations based on the Hauser-Feshbach formalism, using the TALYS and the COH3 codes.

doi: 10.1103/PhysRevC.83.044621
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset14291.


2010TO09      Phys.Rev. C 82, 054620 (2010)

A.P.Tonchev, S.L.Hammond, C.R.Howell, C.Huibregtse, A.Hutcheson, J.H.Kelley, E.Kwan, R.Raut, G.Rusev, W.Tornow, T.Kawano, D.J.Vieira, J.B.Wilhelmy

Measurement of the 241Am(γ, n)240Am reaction in the giant dipole resonance region

NUCLEAR REACTIONS 241Am(γ, n), E=9.0-15.6 MeV; measured Eγ, Iγ, σ using HIγS facility. Giant dipole resonance region. Comparison with previous measurements and statistical nuclear-model calculations.

doi: 10.1103/PhysRevC.82.054620
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetL0156.


2009SH05      Phys.Rev. C 79, 024301 (2009)

S.A.Sheets, U.Agvaanluvsan, J.A.Becker, F.Becvar, T.A.Bredeweg, R.C.Haight, M.Jandel, M.Krticka, G.E.Mitchell, J.M.O'Donnell, W.Parker, R.Reifarth, R.S.Rundberg, E.I.Sharapov, J.L.Ullmann, D.J.Vieira, J.B.Wilhelmy, J.M.Wouters, C.Y.Wu

Test of the statistical model in 96Mo with the BaF calorimeter DANCE array

NUCLEAR REACTIONS 95Mo(n, γ), E<2 keV; measured Eγ, Iγ, from multi-step γ cascades for s- and p-wave neutron resonances below 2 keV. Compared γ spectral shapes to DICEBOX statistical model simulations. Compared multi-step γ-cascade spectra for different multiplicities from various resonances with predictions of different photon strength function models.

doi: 10.1103/PhysRevC.79.024301
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2008ES01      Phys.Rev. C 77, 034309 (2008)

E.-I.Esch, R.Reifarth, E.M.Bond, T.A.Bredeweg, A.Couture, S.E.Glover, U.Greife, R.C.Haight, A.M.Hatarik, R.Hatarik, M.Jandel, T.Kawano, A.Mertz, J.M.O'Donnell, R.S.Rundberg, J.M.Schwantes, J.L.Ullmann, D.J.Vieira, J.B.Wilhelmy, J.M.Wouters

Measurement of the 237Np(n, γ) cross section from 20 meV to 500 keV with a high efficiency, highly segmented 4π BaF2 detector

NUCLEAR REACTIONS 237Np(n, γ), E=0.02-500 keV; measured σ, neutron flux, Eγ, Iγ, time-of-flight spectra, α-spectra. DANCE array. Comparisons with Hauser-Feshbach-Moldauer calculations.

doi: 10.1103/PhysRevC.77.034309
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset14032.


2008JA08      Phys.Rev. C 78, 034609 (2008); Publishers Note Phys.Rev. C 78, 049904 (2008)

M.Jandel, T.A.Bredeweg, E.M.Bond, M.B.Chadwick, R.R.Clement, A.Couture, J.M.O'Donnell, R.C.Haight, T.Kawano, R.Reifarth, R.S.Rundberg, J.L.Ullmann, D.J.Vieira, J.B.Wilhelmy, J.M.Wouters, U.Agvaanluvsan, W.E.Parker, C.Y.Wu, J.A.Becker

Neutron capture cross section of 241Am

NUCLEAR REACTIONS 241Am(n, γ), E=0.02 eV-320 keV; measured Eγ, Iγ, σ, resonance parameters. Comparison with evaluated cross sections databases.

doi: 10.1103/PhysRevC.78.034609
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset14209.


2008RE01      Phys.Rev. C 77, 015804 (2008)

R.Reifarth, M.Heil, C.Forssen, U.Besserer, A.Couture, S.Dababneh, L.Dorr, J.Gorres, R.C.Haight, F.Kappeler, A.Mengoni, S.O'Brien, N.Patronis, R.Plag, R.S.Rundberg, M.Wiescher, J.B.Wilhelmy

The 14C(n, γ) cross section between 10 keV and 1 MeV

NUCLEAR REACTIONS 14C(n, γ), E=10-1000 keV; measured neutron spectra, neutron flux, Eγ, Iγ, cross sections; deduced reaction rate. 15C; measured half-life.

doi: 10.1103/PhysRevC.77.015804
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset22995.


2008TO06      Phys.Rev. C 77, 054610 (2008)

A.P.Tonchev, C.T.Angell, M.Boswell, A.S.Crowell, B.Fallin, S.Hammond, C.R.Howell, A.Hutcheson, H.J.Karwowski, J.H.Kelley, R.S.Pedroni, W.Tornow, J.A.Becker, D.Dashdorj, J.Kenneally, R.A.Macri, M.A.Stoyer, C.Y.Wu, E.Bond, M.B.Chadwick, J.Fitzpatrick, T.Kawano, R.S.Rundberg, A.Slemmons, D.J.Vieira, J.B.Wilhelmy

Measurement of the 241Am(n, 2n) reaction cross section from 7.6 MeV to 14.5 MeV

NUCLEAR REACTIONS 241Am(n, 2n), E=7.6-14.5 MeV; measured Eγ, Iγ, neutron time-of-flight spectra, σ, excitation functions. Comparison with evaluated data in ENDF/B-VII and JENDL-3.3.

doi: 10.1103/PhysRevC.77.054610
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset14172.


2007AG09      Nucl.Instrum.Methods Phys.Res. B261, 934 (2007)

U.Agvaanluvsan, J.A.Becker, R.A.Macri, W.Parker, P.Wilk, C.Y.Wu, T.A.Bredeweg, E.Esch, R.C.Haight, J.M.O'Donnell, R.Reifarth, R.S.Rundberg, J.M.Schwantes, J.L.Ullmann, D.J.Vieira, J.B.Wilhelmy, J.M.Wouters, G.E.Mitchell, S.Sheets, F.Becvar, M.Krticka

Progress on the europium neutron capture study using DANCE

NUCLEAR REACTIONS 151,153Eu(n, γ), E=0.1-100 keV; measured Eγ, Iγ, and multiplicity distributions.

doi: 10.1016/j.nimb.2007.03.107
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2007BE16      Phys.Rev.Lett. 98, 142501 (2007)

B.R.Beck, J.A.Becker, P.Beiersdorfer, G.V.Brown, K.J.Moody, J.B.Wilhelmy, F.S.Porter, C.A.Kilbourne, R.L.Kelley

Energy Splitting of the Ground-State Doublet in the Nucleus 229Th

RADIOACTIVITY 233U(α); measured Eγ, Iγ. 229Th deduced excited state energy.

doi: 10.1103/PhysRevLett.98.142501
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Data from this article have been entered in the XUNDL database. For more information, click here.


2007BR16      Nucl.Instrum.Methods Phys.Res. B261, 986 (2007)

T.A.Bredeweg, M.M.Fowler, J.A.Becker, E.M.Bond, M.B.Chadwick, R.R.C.Clement, E.-I.Esch, T.Ethvignot, T.Granier, M.Jandel, R.A.Macri, J.M.O'Donnell, R.Reifarth, R.S.Rundberg, J.L.Ullmann, D.J.Vieira, J.B.Wilhelmy, J.M.Wouters, C.Y.Wu

Simultaneous measurement of (n, γ) and (n, fission) cross sections with the DANCE 4π BaF2 array

NUCLEAR REACTIONS 235U, 252Cf(n, γ), (n, X), E < 18 eV; measured Eγ, Iγ, fission fragments. Deduced cross sections.

doi: 10.1016/j.nimb.2007.04.226
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset14149.


2007SH46      Phys.Rev. C 76, 064317 (2007)

S.A.Sheets, U.Agvaanluvsan, J.A.Becker, F.Becvar, T.A.Bredeweg, R.C.Haight, M.Krticka, M.Jandel, G.E.Mitchell, J.M.O'Donnell, W.E.Parker, R.Reifarth, R.S.Rundberg, E.I.Sharapov, I.Tomandl, J.L.Ullmann, D.J.Vieira, J.M.Wouters, J.B.Wilhelmy, C.Y.Wu

Spin and parity assignments for 94, 95Mo neutron resonances

NUCLEAR REACTIONS 94,95Mo(n, γ), E=800 MeV; measured neutron energies, Eγ, Iγ, γ-ray multiplicities. 95,96Mo; deduced neutron resonance levels, J, π.

doi: 10.1103/PhysRevC.76.064317
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Data from this article have been entered in the XUNDL database. For more information, click here.


2006RO22      Nucl.Instrum.Methods Phys.Res. A562, 771 (2006)

C.Romano, Y.Danon, R.C.Haight, S.A.Wender, D.J.Vieira, E.M.Bond, R.S.Rundberg, J.B.Wilhelmy, J.M.O'Donnell, A.F.Michaudon, T.A.Bredeweg, D.Rochman, T.Granier, T.Ethvignot

Measurements of (n, α) cross-section of small samples using a lead-slowing-down-spectrometer

NUCLEAR REACTIONS 6Li(n, α), E ≈ 0.1-10000 eV; measured Eα, σ(E). Lead-slowing-down spectrometer.

doi: 10.1016/j.nima.2006.02.052
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 dataset14105.


2006RO28      Nucl.Instrum.Methods Phys.Res. A564, 400 (2006)

D.Rochman, R.C.Haight, J.M.O'Donnell, S.A.Wender, D.J.Vieira, E.M.Bond, T.A.Bredeweg, J.B.Wilhelmy, T.Granier, T.Ethvignot, M.Petit, Y.Danon, C.Romano

Cross-section measurements for 239Pu(n, f) and 6Li(n, α) with a lead slowing-down spectrometer

NUCLEAR REACTIONS 239Pu(n, F), E < 100 keV; measured fission σ. 6Li(n, α), E < 10 keV; measured σ. Lead slowing-down spectrometer.

doi: 10.1016/j.nima.2006.03.032
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset14108.


2005AH02      Phys.Rev. C 71, 024311 (2005)

I.Ahmad, J.C.Banar, J.A.Becker, T.A.Bredeweg, J.R.Cooper, D.S.Gemmell, A.Kraemer, A.Mashayekhi, D.P.McNabb, G.G.Miller, E.F.Moore, P.Palmer, L.N.Pangault, R.S.Rundberg, J.P.Schiffer, S.D.Shastri, T.-F.Wang, J.B.Wilhelmy

Search for x-ray induced decay of the 31-yr isomer of 178Hf using synchrotron radiation

NUCLEAR REACTIONS 178mHf(X-ray, X), E=8-30 keV; measured prompt and delayed Eγ, X-ray spectra; deduced σ upper limit for induced isomer decay. Comparison with previous results.

doi: 10.1103/PhysRevC.71.024311
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2005RE22      Nucl.Phys. A758, 787c (2005)

R.Reifarth, M.Heil, R.Plag, U.Besserer, S.Dababneh, L.Dorr, J.Gorres, R.C.Haight, F.Kappeler, A.Mengoni, S.O'Brien, N.Patronis, R.S.Rundberg, M.Wiescher, J.B.Wilhelmy

Stellar neutron capture rates of 14C

NUCLEAR REACTIONS 14C(n, γ), E=30, 150, 500 keV; measured σ. Fast cyclic activation technique.

doi: 10.1016/j.nuclphysa.2005.05.141
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset22895.


2005RE25      Nucl.Instrum.Methods Phys.Res. B241, 176 (2005)

R.Reifarth, E.-I.Esch, A.Alpizar-Vicente, E.M.Bond, T.A.Bredeweg, S.E.Glover, U.Greife, R.Hatarik, R.C.Haight, A.Kronenberg, J.M.O'Donnell, R.S.Rundberg, J.M.Schwantes, J.L.Ullmann, D.J.Vieira, J.B.Wilhelmy, J.M.Wouters

(n, γ) measurements on radioactive isotopes with DANCE

NUCLEAR REACTIONS 237Np(n, γ), E=0.01-10 eV; measured σ. Comparison with previous results.

doi: 10.1016/j.nimb.2005.07.022
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset14032.


2005RO30      Nucl.Instrum.Methods Phys.Res. A550, 397 (2005)

D.Rochman, R.C.Haight, J.M.O'Donnell, A.Michaudon, S.A.Wender, D.J.Vieira, E.M.Bond, T.A.Bredeweg, A.Kronenberg, J.B.Wilhelmy, T.Ethvignot, T.Granier, M.Petit, Y.Danon

Characteristics of a lead slowing-down spectrometer coupled to the LANSCE accelerator

NUCLEAR REACTIONS 235U, 239Pu(n, F), E < 100 keV; measured fission σ. Lead slowing-down spectrometer.

doi: 10.1016/j.nima.2005.04.075
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset14091.


2003AH03      Phys.Rev. C 67, 041305 (2003)

I.Ahmad, J.C.Banar, J.A.Becker, T.A.Bredeweg, J.R.Cooper, D.S.Gemmell, A.Mashayekhi, D.P.McNabb, E.F.Moore, P.Palmer, R.S.Rundberg, J.P.Schiffer, S.D.Shastri, T.F.Wang, J.B.Wilhelmy

Search for x-ray induced decay of the 31-yr isomer of 178Hf at low x-ray energies

NUCLEAR REACTIONS 178mHf(X-ray, X), E=6-20 keV; measured upper limit for energy-integrated σ of x-ray induced isomer decay. Comparison with previous results.

doi: 10.1103/PhysRevC.67.041305
Citations: PlumX Metrics


2003GR10      Nucl.Instrum.Methods Phys.Res. A506, 149 (2003)

T.Granier, L.Pangault, T.Ethvignot, R.C.Haight, X.Ledoux, V.Meot, Y.Patin, P.Pras, M.Szmigiel, R.S.Rundberg, J.B.Wilhelmy

Measuring neutron-induced fission cross-section of shortlived actinides using a lead neutron-slowing-down spectrometer

NUCLEAR REACTIONS 235U(n, F), E=low; measured fission rate, neutron spectra. Lead neutron-slowing-down spectrometer. Application to measurement of fission of short-lived isotopes discussed.

doi: 10.1016/S0168-9002(03)01373-1
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2003RE27      Nucl.Phys. A718, 478c (2003)

R.Reifarth, R.Haight, M.Heil, M.M.Fowler, K.Kappeler, G.G.Miller, R.S.Rundberg, J.L.Ullmann, J.B.Wilhelmy

Neutron capture measurements on 171Tm

NUCLEAR REACTIONS 171Tm(n, γ), E < 20 MeV; measured σ. Comparison with model prediction.

doi: 10.1016/S0375-9474(03)00862-5
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 dataset22841.


2001AH04      Phys.Rev.Lett. 87, 072503 (2001)

I.Ahmad, J.C.Banar, J.A.Becker, D.S.Gemmell, A.Kraemer, A.Mashayekhi, D.P.McNabb, G.G.Miller, E.F.Moore, L.N.Pangault, R.S.Rundberg, J.P.Schiffer, S.D.Shastri, T.F.Wang, J.B.Wilhelmy

Search for X-Ray Induced Acceleration of the Decay of the 31-Yr Isomer of 178Hf using Synchrotron Radiation

NUCLEAR REACTIONS 178mHf(X-ray, γ), E ≈ 10-100 keV; measured prompt and delayed Eγ, Iγ, x-ray spectra; deduced upper limit on energy-integrated σ for enhanced isomer decay.

doi: 10.1103/PhysRevLett.87.072503
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1996DA42      Nucl.Sci.Eng. 124, 482 (1996)

Y.Danon, M.S.Moore, P.E.Koehler, P.E.Littleton, G.G.Miller, M.A.Ott, L.J.Rowton, W.A.Taylor, J.B.Wilhelmy, M.A.Yates, A.D.Carlson, N.W.Hill, R.Harper, R.Hilko

Fission Cross-Section Measurements of the Odd-Odd Isotopes 232Pa, 238Np, and 236Np

NUCLEAR REACTIONS, ICPND 232Th(p, n), (p, 3n), E=threshold-20 MeV; 232Th(d, n), (d, 2n), E=threshold-20 MeV; measured residuals production σ(E). 232Pa, 238,236Np(n, F), E < 100 keV; measured fission σ(E). 237Np deduced resonances, fission width, 2gΓn.

doi: 10.13182/NSE96-A17926
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1992BE01      Phys.Rev. C45, 677 (1992)

M.Begemann-Blaich, Th.Blaich, M.M.Fowler, J.B.Wilhelmy, H.C.Britt, D.J.Fields, L.F.Hansen, R.G.Lanier, D.J.Massoletti, M.N.Namboodiri, B.A.Remington, T.C.Sangster, G.L.Struble, M.L.Webb, Y.D.Chan, A.Dacal, A.Harmon, J.Pouliot, R.G.Stokstad, S.Kaufman, F.Videbaek, Z.Fraenkel

Fission from Fe and Nb Reactions with Heavy Targets at 50-100 MeV/Nucleon

NUCLEAR REACTIONS Ta, 197Au, Th(Fe, F), (93Nb, F), E=50-100 MeV/nucleon; measured fission σ, charge loss distribution, fragment velocity systematics, momentum transfers. Peripheral collisions, model analysis.

doi: 10.1103/PhysRevC.45.677
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1992BL01      Phys.Rev. C45, 689 (1992)

Th.Blaich, M.Begemann-Blaich, M.M.Fowler, J.B.Wilhelmy, H.C.Britt, D.J.Fields, L.F.Hansen, M.N.Namboodiri, T.C.Sangster, Z.Fraenkel

Calculation for Fission Decay from Heavy Ion Reactions at Intermediate Energies

NUCLEAR REACTIONS Ta, 197Au, Th(Fe, F), (93Nb, F), E=100 MeV/nucleon; analyzed data. Intranuclear cascade model, final state statistical evaporation decay.

doi: 10.1103/PhysRevC.45.689
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1992SA15      Phys.Rev. C46, 1404 (1992)

T.C.Sangster, H.C.Britt, D.J.Fields, L.F.Hansen, R.G.Lanier, M.N.Namboodiri, B.A.Remington, M.L.Webb, M.Begemann-Blaich, T.Blaich, M.M.Fowler, J.B.Wilhelmy, Y.D.Chan, A.Dacal, A.Harmon, J.Pouliot, R.G.Stokstad, S.Kaufman, F.Videbaek, Z.Fraenkel, G.Peilert, H.Stocker, W.Greiner, A.Botvina, I.N.Mishustin

Intermediate Mass Fragment Emission in Fe + Au Collisions

NUCLEAR REACTIONS 197Au(Fe, X), E=50-100 MeV/nucleon; measured σ(fragment θ), charge, velocity distributions; deduced intermediate mass fragment production mechanism. Quantum molecular dynamics model.

doi: 10.1103/PhysRevC.46.1404
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1990BO05      Z.Phys. A335, 41 (1990)

J.P.Bocquet, R.Brissot, H.R.Faust, M.Fowler, J.Wilhelmy, M.Asghar, M.Djebara

Characteristics of Mass and Nuclear Charge Distributions of 229Th(n(th), F). Implications for Fission Dynamics

NUCLEAR REACTIONS 229Th(n, F), E=thermal; measured fission fragment yield vs mass, charge; deduced proton odd-even effect role in fission. Other data analyzed.

Data from this article have been entered in the EXFOR database. For more information, access X4 dataset22143.


1989FI07      Nucl.Phys. A495, 209c (1989)

D.J.Fields, T.C.Sangster, M.L.Webb, B.A.Remington, H.C.Britt, L.F.Hansen, R.G.Lanier, D.Massoletti, M.N.Namboodiri, G.L.Struble, M.L.Begemann-Blaich, T.Blaich, M.M.Fowler, J.Wilhelmy, S.Kaufman, F.Videbaek, Y.D.Chan, A.Dacal, A.Harmon, J.Pouliot, R.Stokstad, Z.Fraenkel

Heavy Ion Reaction Studies of Nb + Au at E/A = 50, 75 and 100 MeV

NUCLEAR REACTIONS 197Au(93Nb, F), E=50-100 MeV/nucleon; measured fission (fragment)(fragment)-coin, (fragment)(fragment)(θ); deduced fission mechanism.

doi: 10.1016/0375-9474(89)90320-5
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1989HA10      Phys.Rev. C39, 1866 (1989)

H.L.Hall, K.E.Gregorich, R.A.Henderson, D.M.Lee, D.C.Hoffman, M.E.Bunker, M.M.Fowler, P.Lysaight, J.W.Starner, J.B.Wilhelmy

β-Delayed Fission from 256mEs and the Level Scheme of 256Fm

RADIOACTIVITY 256mEs(β-) [from 254Es(t, p), E=16 MeV]; measured Eγ, Iγ, βγ-, γγ-coin, β(fragment)(θ) following β-delayed fission; deduced β-delayed fission evidence. 256Fm deduced isomer, T1/2, fission characteristics, other levels, J, π.

doi: 10.1103/PhysRevC.39.1866
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1986MA22      Nucl.Phys. A454, 213 (1986)

G.Mamane, E.Cheifetz, E.Dafni, A.Zemel, J.B.Wilhelmy

Lifetime Measurements of Excited Levels in Prompt Fission Products of 252Cf

RADIOACTIVITY 252Cf(SF); measured prompt fission fragment decay γ-spectra, recoil. 108,110Ru, 104,106Mo, 142,144Ba, 112,114Pd transitions; deduced T1/2.

doi: 10.1016/0375-9474(86)90265-4
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1984BR14      Phys.Rev. C30, 559 (1984)

H.C.Britt, D.C.Hoffman, J.van der Plicht, J.B.Wilhelmy, E.Cheifetz, R.J.Dupzyk, R.W.Lougheed

Fission of 255,256Es, 255-257Fm, and 258Md at Moderate Excitation Energies

NUCLEAR REACTIONS, ICPND 254Es(d, pF), (t, pF), (3He, dF), (3He, pF), E=tandem; 254Es(p, F), (d, F), (t, F), E=11-17 MeV; 254Es(α, F), E=20-26 MeV; measured fission fragment yield, total kinetic energy vs mass, (fragment)(fragment)-coin. 255,256Es, 255,256,257Fm, 258Md deduced fission characteristics, potential energy surface role.

doi: 10.1103/PhysRevC.30.559
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1984ES01      Phys.Rev. C29, 2160 (1984)

K.Eskola, P.Eskola, M.M.Fowler, H.Ohm, E.N.Treher, J.B.Wilhelmy, D.Lee, G.T.Seaborg

Production of Neutron-Rich Bi Isotopes by Transfer Reactions

NUCLEAR REACTIONS, ICPND 208Pb(18O, X)211Bi/212Bi/213Bi, 205Tl(18O, X)212Bi/213Bi, 204Hg(18O, X)212Bi, E ≈ 80-180 MeV; measured residuals absolute production σ(E), σ(Eα), 212Bi isomer yield ratio; deduced reaction mechanism. Activation technique. 208Pb(18O, 15N), (18O, 14N), (18O, 13N), (18O, 12N), E ≈ 100-200 MeV; calculated absolute σ(E). Sum rule technique.

RADIOACTIVITY 212,212mBi(β-); [from 208Pb, 205Tl, 204Hg(18O, X), E=5-10 MeV/nucleon]; measured β-delayed Eα, Iα; deduced isomer decay characteristics, level configurations.

doi: 10.1103/PhysRevC.29.2160
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1984GA03      Phys.Rev.Lett. 52, 589 (1984)

A.Gavron, P.Eskola, A.J.Sierk, J.Boissevain, H.C.Britt, K.Eskola, M.M.Fowler, H.Ohm, J.B.Wilhelmy, S.Wald, R.L.Ferguson

New Evaluation of Fission-Fragment Angular Distributions in Heavy-Ion Reactions

NUCLEAR REACTIONS 238U(16O, F), E=114, 140, 250 MeV; 238U, 174Yb(12C, F), E=95, 188 MeV; 198Pt(12C, F), E=95, 186 MeV; 192Os, 170Er, 142Nd(16O, F), E=140, 250 MeV; measured fission fragment σ(θ), yield anisotropies; deduced well defined fission barrier, saddle point K quantum number roles. Transition state model, other data analysis.

doi: 10.1103/PhysRevLett.52.589
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1984GA30      Phys.Rev. C30, 1550 (1984)

A.Gavron, J.Boissevain, H.C.Britt, K.Eskola, P.Eskola, M.M.Fowler, H.Ohm, J.B.Wilhelmy, T.C.Awes, R.L.Ferguson, F.E.Obenshain, F.Plasil, G.R.Young, S.Wald

Fission Cross Sections up to 20 MeV/Nucleon

NUCLEAR REACTIONS, ICPND 174Yb, 198Pt, 238U(12C, F), E=95-291 MeV; 142Nd, 170Er, 192Os, 238U(16O, F), E=140-315 MeV; 126Te, 144Nd, 238U(32S, F), E=350, 500, 700; 96Zr, 116Cd, 238U(58Ni, F), E=352, 875 MeV; measured fission σ(E), fragment σ(θ) anisotropy; deduced incomplete fusion reaction role.

doi: 10.1103/PhysRevC.30.1550
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1983FL05      Phys.Rev. C28, 97 (1983)

E.R.Flynn, J.van der Plicht, J.B.Wilhelmy, L.G.Mann, G.L.Struble, R.G.Lanier

146Gd and 144Sm Excited by the (p, t) Reaction on Radioactive Targets

NUCLEAR REACTIONS 148Gd, 146Sm(p, t), E=25 MeV; measured σ(Et), σ(θ). 146Gd deduced mass excess, levels, J, π, configurations, pairing monopole, quadrupole vibrations. 144Sm deduced levels, J, π, configurations, pairing monopole, quadrupole vibrations. Radioactive enriched targets, Q3D spectrometer. DWBA analysis.

doi: 10.1103/PhysRevC.28.97
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1983HI09      Nucl.Phys. A404, 401 (1983)

G.Himmele, H.Backe, P.A.Butler, D.Habs, V.Metag, H.J.Specht, J.B.Wilhelmy

Measurements of Nuclear Reaction Cross Sections for 183,184W + 238U near the Interaction Barrier

NUCLEAR REACTIONS 238U(184W, 182W), (184W, 183W), (184W, 185W), (184W, 186W), (183W, 183W'), E ≈ interaction barrier; measured σ(transfer), fission σ; deduced transfer, fission probabilities.

doi: 10.1016/0375-9474(83)90556-0
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1983VA23      Phys.Rev. C28, 2022 (1983)

J.van der Plicht, H.C.Britt, M.M.Fowler, Z.Fraenkel, A.Gavron, J.B.Wilhelmy, F.Plasil, T.C.Awes, G.R.Young

Fission of Polonium, Osmium, and Erbium Composite Systems

NUCLEAR REACTIONS, ICPND 174Yb(16O, F), E=10 MeV/nucleon; 142Nd(16O, F), E=95-140 MeV; 134Ba(24Mg, F), E=120-180 MeV; 126Te(32S, F), E=150-220 MeV; 94Zr(64Ni, F), E=250, 270, 290 MeV; 177Hf(9Be, F), E=64-84 MeV; 174Yb(12C, F), E=65-120 MeV; 170Er(16O, F), E=80-150 MeV; 160Gd(26Mg, F), E=120-170 MeV; 198Pt(12C, F), E=55-120 MeV; 192Os(16O, F), E=78-150 MeV; 188Os(16O, F), (18O, F), E=80-140 MeV; measured fission σ(E). 158Er, 186Os, 210Po deduced fission barrier mass, angular momentum dependences.

doi: 10.1103/PhysRevC.28.2022
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1982HI16      Nucl.Phys. A391, 191 (1982)

G.Himmele, H.Backe, P.A.Butler, D.Habs, V.Metag, J.B.Wilhelmy, H.J.Specht

Experimental Features of Coulomb Fission

NUCLEAR REACTIONS 238U(152Sm, 152Sm'), 238U(184W, 184W'), 232Th(184W, 184W'), 248Cm(232Th, 232Th'), E ≈ Coulomb barrier; measured fission σ following inelastic scattering. 232Th, 238U, 248Cm deduced fission probability. Enriched target.

doi: 10.1016/0375-9474(82)90227-5
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1981CH18      Phys.Rev. C24, 519 (1981)

E.Cheifetz, H.C.Britt, J.B.Wilhelmy

Fission Probabilities for Actinide Nuclei Excited by the (12C, 8Be(g.s.)) Reaction

NUCLEAR REACTIONS, Fission 236U, 232Th(12C, 8Be), E=65 MeV; measured σ(8Be). 236U, 240Pu deduced fission probability vs excitation energy.

doi: 10.1103/PhysRevC.24.519
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1981WE05      Phys.Rev. C23, 2100 (1981)

J.Weber, H.C.Britt, J.B.Wilhelmy

Comparison of 252Cf Spontaneous Fission with 250Cf(t, pf)

RADIOACTIVITY, Fission 252Cf(SF); measured σ(fragment mass), average total kinetic energy vs mass.

NUCLEAR REACTIONS, Fission 250Cf(t, pF), E=16 MeV; measured σ(fragment mass), average total kinetic energy vs mass, excitation energy.

doi: 10.1103/PhysRevC.23.2100
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1980BR02      Phys.Rev. C21, 761 (1980)

H.C.Britt, E.Cheifetz, D.C.Hoffman, J.B.Wilhelmy, R.J.Dupzyk, R.W.Lougheed

Fission Barriers for 255Es, 256Es, and 255Fm

NUCLEAR REACTIONS 254Es(t, pF), (d, pF), (3He, dF), E not given; measured fission coin spectra. 255Fm, 255,256Es deduced first barrier height.

doi: 10.1103/PhysRevC.21.761
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1980HO04      Phys.Rev. C21, 972 (1980)

D.C.Hoffman, J.B.Wilhelmy, J.Weber, W.R.Daniels, E.K.Hulet, R.W.Lougheed, J.H.Landrum, J.F.Wild, R.J.Dupzyk

12.3-min 256Cf and 43-min 258Md and Systematics of the Spontaneous Fission Properties of Heavy Nuclides

RADIOACTIVITY 256Cf(SF) [from 254Cf(t, p), E=16 MeV]; measured T1/2, (fragment)(fragment)-coin; deduced total kinetic energy, mass distribution. 258Md[from 255Es(α, n), E=26.3 MeV]; measured T1/2. 258Fm (SF) [from ϵ decay of 258Md]; measured (fragment)(fragment)-coin; deduced total kinetic energy, mass distribution.

doi: 10.1103/PhysRevC.21.972
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1980HU03      Phys.Rev. C21, 966 (1980)

E.K.Hulet, R.W.Lougheed, J.H.Landrum, J.F.Wild, D.C.Hoffman, J.Weber, J.B.Wilhelmy

Spontaneous Fission of 259Fm

NUCLEAR REACTIONS 257Fm(t, p), E=16 MeV; measured σ, (fragment)(fragment)-coin. 259Fm deduced SF isomer, T1/2, fragment mass distribution.

doi: 10.1103/PhysRevC.21.966
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1980LI06      Phys.Rev.Lett. 44, 983 (1980)

D.Liesen, P.Armbruster, F.Bosch, S.Hagmann, P.H.Mokler, H.J.Wollersheim, H.Schmidt-Bocking, R.Schuch, J.B.Wilhelmy

Experimental Confirmation of a Scaling Law for the 1sσ Excitation Probability for Z1 + Z2 > 120, and its Breakdown in Pb + Cm Collisions At Very Small Internuclear Distances

ATOMIC PHYSICS Au(Xe, X), E=3.6-6.8 MeV/nucleon; Cm(Pb, X), E=3.6-5.9 MeV/nucleon; measured (particle)(X-ray)-coin. Au, Cm deduced 1sσ excitation probability. Scaling law fit to all available data.

doi: 10.1103/PhysRevLett.44.983
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1979BA42      Phys.Rev.Lett. 43, 1077 (1979)

H.Backe, F.Weik, P.A.Butler, V.Metag, J.B.Wilhelmy, D.Habs, G.Himmele, H.J.Specht

Direct Observation of Coulomb Fission of 238U with 184W Projectiles

NUCLEAR REACTIONS 238U(184W, 184W'F), E=5-6 MeV/nucleon; measured I(ce), ce fragment-coin, Coulomb excitation σ(E), σ(fission).

doi: 10.1103/PhysRevLett.43.1077
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1979GL03      Phys.Rev.Lett. 43, 1483 (1979)

P.Glassel, D.v.Harrach, Y.Civelekoglu, R.Manner, H.J.Specht, J.B.Wilhelmy, H.Freiesleben, K.D.Hildenbrand

Three-Particle Exclusive Measurements of the Reactions 238U + 238U and 238U + 248Cm

NUCLEAR REACTIONS 238U, 248Cm(238U, F), E=7.5 MeV/nucleon; measured σ(θ). Kinematically complete experiment, three-body breakup.

doi: 10.1103/PhysRevLett.43.1483
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1978BR07      Phys.Rev.Lett. 40, 1010 (1978)

H.C.Britt, A.Gavron, P.D.Goldstone, R.Schoenmackers, J.Weber, J.B.Wilhelmy

Yet More Complexity in Fission: Barriers for Nuclei with N = 150-154

NUCLEAR REACTIONS 244Pu, 246,248Cm, 250Cf(t, p), (d, p), (p, p'), E not given; measured fission probability distributions.

doi: 10.1103/PhysRevLett.40.1010
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1978WI12      S.Afr.J.Phys. 1, 116 (1978)

J.B.Wilhelmy, H.C.Britt, D.C.Hoffman, W.R.Daniels, E.Cheifetz, A.Gavron, J.Weber, E.K.Hulet, J.H.Landrum, R.W.Lougheed, J.F.Wild

Fission Properties of the Heavy Actinides

NUCLEAR REACTIONS 254Es(d, pF), (t, pF), E not given; measured fission barriers.

RADIOACTIVITY, Fission 256Cf(SF) [from 254Cf(t, p)]; 258Fm(SF) [from 255Es(α, n)258Md+electron capture]; 259Fm(SF) [from 257Fm(t, p)]; measured fragment mass distribution, average kinetic energy release.


1977GA09      Phys.Rev. C15, 2238 (1977)

A.Gavron, H.C.Britt, P.D.Goldstone, R.Schoenmackers, J.Weber, J.B.Wilhelmy

Γn/Γf in Heavy Actinides

NUCLEAR REACTIONS 244Pu, 245,246,248Cm, 249,250Cf(3He, d), (3He, t), E=8, 11 MeV; measured fission probability of compound systems 244,245Am, 245,246,247,248,249Bk, 249,250,251Es.

doi: 10.1103/PhysRevC.15.2238
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1977GA11      Phys.Rev.Lett. 38, 1457 (1977)

A.Gavron, H.C.Britt, P.D.Goldstone, J.B.Wilhelmy, S.E.Larsson

Complexity of the Potential-Energy Surface for Fission of 238U

NUCLEAR STRUCTURE 238U; calculated fission saddle points.

doi: 10.1103/PhysRevLett.38.1457
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1977GO05      Phys.Rev.Lett. 38, 1262 (1977)

P.D.Goldstone, H.C.Britt, R.Schoenmackers, J.B.Wilhelmy

Determination of Γn/Γf at 12 to 20 MeV Excitation from Evaporation-Residue Cross Sections

NUCLEAR REACTIONS 197Au, 232Th, 236U(7Li, α), E=34 MeV; measured σ(Eα); deduced evaporation-residue probabilities.

doi: 10.1103/PhysRevLett.38.1262
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1976GA11      Phys.Rev. C13, 2374 (1976)

A.Gavron, H.C.Britt, E.Konecny, J.Weber, J.B.Wilhelmy

Γn/Γf for Actinide Nuclei Using (3He, df) and (3He, tf) Reactions

NUCLEAR STRUCTURE 230,231,232,233Pa, 231,232U, 233,234,235,236,237,238,239Np, 237,238Pu, 239,240,241,242,243Am, 241,242,243,244Cm; measured fission probability in 3He induced reactions; deduced barrier heights, average Γn/Γf.

NUCLEAR REACTIONS 230,232Th, 231Pa, 234,236,238U, 237Np, 239,241Pu, 241,243Am(3He, df), (3He, tf); 232U, 242Pu(3He, df); E=25 MeV; measured fission spectra; deduced barrier heights, average neutron-, fission-widths. 230,231,232,233Pa, 231,232U, 233,234,235,236,237,238,239Np, 237,238Pu, 239,240,241,242,243Am, 241,242,243,244Cm deduced fission probability.

doi: 10.1103/PhysRevC.13.2374
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1976WE03      Phys.Rev. C13, 189 (1976)

J.Weber, B.R.Erdal, A.Gavron, J.B.Wilhelmy

Mass and Kinetic Energy Measurements of Fragments from the Isomeric and Excited State Fission of 242Am

RADIOACTIVITY, Fission 242mAm(SF); measured T1/2, σ(E(fragment mass)).

NUCLEAR REACTIONS 241Am(d, pF), E=15 MeV; measured σ(E(fragment mass)).

doi: 10.1103/PhysRevC.13.189
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1976WE13      Phys.Rev. C13, 2413 (1976)

J.Weber, H.C.Britt, A.Gavron, E.Konecny, J.B.Wilhelmy

Fission of 228Ra

NUCLEAR REACTIONS 226Ra(t, F), E=23 MeV; measured symmetric, asymmetric component fission probability; deduced fission barrier parameters, mass distributions.

doi: 10.1103/PhysRevC.13.2413
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1975BA35      Phys.Rev. C12, 451 (1975)

B.P.Bayhurst, J.S.Gilmore, R.J.Prestwood, J.B.Wilhelmy, N.Jarmie, B.H.Erkkila, R.A.Hardekopf

Cross Sections for (n, xn) Reactions between 7.5 and 28 MeV

RADIOACTIVITY 189,190,193mIr; measured T1/2.

NUCLEAR REACTIONS 27Al(n, α), E=21.4-26 MeV; measured σ(E, Eα). 45Sc, 89Y, 58Ni, 107Ag(n, 2n), 89Y, 107Ag, 151Eu, 191Ir(n, 3n), 151Eu, 191Ir(n, 4n), Zr(n, xn), E=14-28 MeV; 169Tm, 203Tl, 191,193Ir, 197Au(n, 2n), Lu(n, xn), 169Tm, 197Au, 203Tl(n, 3n), (n, 4n), E=8.6-28 MeV;193Ir(n, n), E=7.6-14.7 MeV;205Tl(n, 4n), E=23-28 MeV; measured σ(E). 90Zr, 175Lu(n, 2n), (n, 3n), 175Lu(n, 4n); calculated σ(E).

doi: 10.1103/PhysRevC.12.451
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1975GA02      Phys.Rev.Lett. 34, 827 (1975)

A.Gavron, H.C.Britt, E.Konecny, J.Weber, J.B.Wilhelmy

Measurement and Interpretation of Gamma(n)/Gamma(f) for Actinide Nuclei

NUCLEAR REACTIONS 232Th, 231Pa, 236U, 237Np, 240Pu, 241Am(3He, dF), (3He, tF). 232,233Pa, 231,232U, 236,237Np, 237,238Pu, 240,241Am, 241,242Cm; measured σ; deduced neutron-to-fission width.

doi: 10.1103/PhysRevLett.34.827
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1973VE10      Trans.Amer.Nucl.Soc. 16, 315 (1973)

L.R.Veeser, J.B.Wilhelmy, D.C.Hoffman, A.Hemmendinger, G.P.Ford, J.A.Farrell, J.P.Balagna

Prompt Neutrons Emitted in Spontaneous Fission of 257Fm

RADIOACTIVITY, Fission 252Cf, 257Fm(SF); measured prompt neutrons.

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1972TS01      Nucl.Phys. A184, 417 (1972)

C.F.Tsang, J.B.Wilhelmy

Interpretation of Mass Asymmetry in Fission Based on Deformation Energy Surfaces

NUCLEAR STRUCTURE, Fission 256Fm, 257Fm, 226Ra; calculated deformation energy surfaces; analyzed mass asymmetry, peak/valley mass-yield ratios.

doi: 10.1016/0375-9474(72)90417-4
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1972WI15      Phys.Rev. C5, 2041 (1972)

J.B.Wilhelmy, E.Cheifetz, R.C.Jared, S.G.Thompson, H.R.Bowman, J.O.Rasmussen

Angular Momentum of Primary Products Formed in the Spontaneous Fission Of 252Cf

RADIOACTIVITY, Fission 252Cf(SF); measured (fragment)(fragment)(γ)-, (fragment)(fragment)(γ)(γ)-, (fragment)(fragment)(X)(γ)-coin, γγ-coin, Iγ(θ); deduced angular momentum of primary products. 100,102Zr, 104,106Mo, 108,110,112Ru, 112,114,116Pd, 118Cd, 138,140Xe, 142,144,146Ba, 146,148,150Ce, 152,154Nd, 158Sm; measured Iγ.

doi: 10.1103/PhysRevC.5.2041
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1971CH44      Phys.Rev. C4, 1913 (1971)

E.Cheifetz, J.B.Wilhelmy, R.C.Jared, S.G.Thompson

Determination of the Charge and Mass Distribution in the Fission of 252Cf

RADIOACTIVITY, Fission 252Cf; measured mass, charge distributions.

doi: 10.1103/PhysRevC.4.1913
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1970CH11      Phys.Rev.Lett. 25, 38 (1970)

E.Cheifetz, R.C.Jared, S.G.Thompson, J.B.Wilhelmy

Experimental Information Concerning Deformation of Neutron Rich Nuclei In the A Approx. 100 Region

RADIOACTIVITY, Fission 252Cf(SF); measured (fragment)(fragment)(X)-, (fragment)(fragment)(γ)-, γγ-, X(K)γ-coin. 96Sr, 100,102Zr, 102,104,106Mo, 108,110,112Ru, 112,114,116Pd; measured Eγ, Iγ; deduced levels, T1/2, B(E2).

doi: 10.1103/PhysRevLett.25.38
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1970WA05      Nucl.Phys. A141, 449 (1970)

R.L.Watson, J.B.Wilhelmy, R.C.Jared, C.Rugge, H.R.Bowman, S.G.Thompson, J.O.Rasmussen

A Study of the Low-Energy Transitions Arising from the Prompt de-Excitation of Fission Fragments

RADIOACTIVITY, Fission 252Cf(SF); measured E(ce), I(ce), E(X-ray), I(X-ray), I(ce)(t), (fragment)(fragment)(ce)(X)-coin. 102Zr, 106Mo, 108,109Tc, 110Ru, 116Rh, 140Cs, 144Ba, 146La, 148Ce, 149,150Pr; measured E(ce), I(ce); deduced Eγ, K/L, T1/2 (level). Detector - Si(Li), Si(P) fragment detectors.

doi: 10.1016/0375-9474(70)90982-6
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1970WI16      Phys.Rev.Lett. 25, 1122 (1970)

J.B.Wilhelmy, S.G.Thompson, R.C.Jared, E.Cheifetz

Ground-State Bands in Neutron-Rich Even Te, Xe, Ba, Ce, Nd, and Sm Isotopes Produced in the Fission of 252Cf

RADIOACTIVITY, Fission 252Cf(SF); measured (fragment)(fragment)(X)-, (fragment)(fragment)(X)(γ)-coin. 132,134Te, 138,140Xe, 140,142,144,146Ba, 144,146,148,150Ce, 152,154Nd, 156,158Sm; measured Eγ, Iγ; deduced levels, T1/2, B(E2).

doi: 10.1103/PhysRevLett.25.1122
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