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NSR database version of April 11, 2024.

Search: Author = A.Couture

Found 93 matches.

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2023FI01      Eur.Phys.J. A 59, 36 (2023)

S.Fiebiger, B.Baramsai, A.Couture, M.Krticka, S.Mosby, J.O'Donnell, R.Reifarth, G.Rusev, J.Ullmann, M.Weigand, C.Wolf

Neutron capture cross section of 83Kr

NUCLEAR REACTIONS 83Kr(n, γ), (n, X), E<500 keV; measured reaction products, En, In, TOF; deduced σ, MACS. Comparison with available data. The DANCE array at the Los Alamos National Laboratory.

doi: 10.1140/epja/s10050-023-00945-5
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2023KN03      Phys.Rev. C 107, 044313 (2023)

I.Knapova, A.Couture, C.Fry, J.Kvasil, M.Krticka, V.O.Nesterenko, J.M.O'Donnell, C.J.Prokop, G.Rusev, J.L.Ullmann, S.Valenta

Photon strength functions, level densities, and isomeric ratio in 168Er from the radiative neutron capture measured at the DANCE facility

NUCLEAR REACTIONS 168Er(n, γ), E=15-350 eV; measured neutron Time-of-Flight, Eγ, Iγ, γγ-coin, total γ-sum energy, multistep γ-cascade spectra; deduced γ- multiplicity, isomeric ratios, resonances, total radiative width of s-wave resonances. 168Er; deduced isomer levels, T1/2, nuclear level density (NLD), photon strength functions (PSFs), total B(M1) strength. Comparison to experimental data obtained by Oslo method and in NRF experiments. Confirmed scissor mode resonance-like structure in the M1 PSF with its centroid between 3.1 and 3.3 MeV and a width of about 1 MeV. Analysis of multistep cascade fluctuations indicate possible invalidity of the assumed Porter-Thomas distribution of the primary transition intensities. Comparison to TALYS and DICEBOX simulations. Highly segmented γ-ray calorimeter Detector for Advanced Neutron Capture Experiments DANCE (160 BaF2 scintillation crystals) at at the moderated spallation neutron source LANSCE (Los Alamos Neutron Science Center).

doi: 10.1103/PhysRevC.107.044313
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2023LE04      Eur.Phys.J. A 59, 42 (2023)

R.Lewis, A.Couture, S.N.Liddick, A.Spyrou, D.L.Bleuel, L.Crespo Campo, B.P.Crider, A.C.Dombos, M.Guttormsen, T.Kawano, A.C.Larsen, A.M.Lewis, S.Mosby, G.Perdikakis, C.J.Prokop, S.J.Quinn, T.Renstrom, S.Siem

Statistical (n, γ) cross section model comparison for short-lived nuclei

NUCLEAR REACTIONS 73Zn(n, γ), E<1 MeV; calculated σ using TALYS, EMPIRE, and CoH, level densities, γ-ray strength function. Comparison with experimental data.

doi: 10.1140/epja/s10050-023-00920-0
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2023LE08      Phys.Rev. C 108, 014608 (2023)

E.Leal-Cidoncha, A.Couture, E.M.Bond, T.A.Bredeweg, C.Fry, T.Kawano, A.E.Lovell, G.Rusev, I.Stetcu, J.L.Ullmann, L.Leal, M.T.Pigni

Measurement of the neutron-induced capture-to-fission cross section ratio in 233U at LANSCE

NUCLEAR REACTIONS 235U(n, F), (n, γ), E=0.007-250 keV; measured Eγ, Iγ, γ-sum, En, In, nγ-coin; deduced capture-to-fission σ ratio, σ(E) of (n, γ) reaction derived from obtained ratio and ENDF/B-VIII.0 fission σ. Comparison to other experimental data, statistical model calculations and data from ENDF/B-VIII.0, JEFF-3.3, and JENDL-5 libraries. Discussed impact of the data on Th-U fuel cycle. Detector for Advanced Neutron Capture Experiments (DANCE) γ-calorimeter composed of 160 BaF2 crystals combined with the neutron detector array at DANCE (NEUANCE) composed of 21 stilbene crystals at Los Alamos Neutron Science Center (LANSCE, LANL).

doi: 10.1103/PhysRevC.108.014608
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2022AL01      J.Phys.(London) G49, 010501 (2022)

M.Aliotta, R.Buompane, M.Couder, A.Couture, R.J.deBoer, A.Formicola, L.Gialanella, J.Glorius, G.Imbriani, M.Junker, C.Langer, A.Lennarz, Y.A.Litvinov, W.-P.Liu, M.Lugaro, C.Matei, Z.Meisel, L.Piersanti, R.Reifarth, D.Robertson, A.Simon, O.Straniero, A.Tumino, M.Wiescher, Y.Xu

The status and future of direct nuclear reaction measurements for stellar burning

NUCLEAR REACTIONS 12C(α, γ), 22Ne(α, n), (α, γ), 12C(12C, X), E(cm)<7 MeV; analyzed available data; deduced σ, S-factors.

doi: 10.1088/1361-6471/ac2b0f
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2022KN01      Phys.Rev. C 106, 034607 (2022)

I.Knapova, S.Valenta, B.Baramsai, T.A.Bredeweg, A.Couture, C.Fry, M.Jandel, J.Kroll, M.Krticka, G.E.Mitchell, J.M.O'Donnell, C.J.Prokop, G.Rusev, J.L.Ullmann

Spin assignment and statistical properties of neutron resonances from 161, 163Dy(n, γ) and 167Er(n, γ) measured at the DANCE facility

NUCLEAR REACTIONS 161,163Dy, 167Er(n, γ), E=2-345 eV; measured Eγ, Iγ, γγ-coin, γ-sum energy; deduced J, resonances parameters, average resonance spacings. Checked the ratio of spacings for the two spins formed in s-wave resonance capture against predictions of different nuclear level density models. Comparison to other experimental data, Mughabghab "Atlas of Neutron Resonances" evaluation and TALYS calculations. Highly segmented γ-ray calorimeter Detector for Advanced Neutron Capture Experiments (DANCE) consisting of 160 BaF2 crystals the Los Alamos Neutron Science Center.

doi: 10.1103/PhysRevC.106.034607
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2022KO29      Eur.Phys.J. A 58, 195 (2022)

P.E.Koehler, J.L.Ullmann, A.J.Couture, S.M.Mosby

Constraining the nuclear spin distribution using improved 197Au neutron resonance parameters

NUCLEAR REACTIONS 197Au(n, X), E<3 keV; measured reaction products, En, In; deduced transmission, resonance parameters, distributions of total radiation widths for 197Au neutron resonances . R-matrix analysis. Comparison with available data, ENDF library. An early version of the Device for Indirect Capture Experiments on Radionuclides (DICER), which is under development at the Los Alamos Neutron Science Center (LANSCE).

doi: 10.1140/epja/s10050-022-00842-3
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset14796.


2022LA09      Phys.Rev. C 106, 025802 (2022)

A.Laminack, J.C.Blackmon, A.Couture, J.P.Greene, M.Krticka, K.T.Macon, S.Mosby, C.Prokop, J.L.Ullmann, S.Valenta

Measurement of neutron-capture cross sections of 70, 72Ge using the DANCE facility

NUCLEAR REACTIONS 70,72Ge(n, γ), E=0.000001-1 MeV; measured Eγ, Iγ, γ sum energy; deduced neutron capture σ(E), Maxwellian averaged σ(E). Comparison to other experimental results and evaluated data from ENDF/B-VIII.0, KADoNiS-v1.0. Presented analysis of the impact of measured σ on stellar nucleosynthesis abundances.Detector for Advanced Neutron Capture Experiments (DANCE) consisting of 160 BaF2 detectors combined into calorimeter at Los Alamos Neutron Science Center (LANSCE, LANL).

doi: 10.1103/PhysRevC.106.025802
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset14791.


2022NA07      Nucl.Phys. A1018, 122359 (2022)

F.Naqvi, S.Karampagia, A.Spyrou, S.N.Liddick, A.C.Dombos, D.L.Bleuel, B.A.Brown, L.Crespo Campo, A.Couture, B.Crider, T.Ginter, M.Guttormsen, A.C.Larsen, R.Lewis, P.Moller, S.Mosby, G.Perdikakis, C.Prokop, T.Renstrom, S.Siem

Total absorption spectroscopy measurement on neutron-rich 74, 75Cu isotopes

RADIOACTIVITY 74,75Cu(β-) [from 9Be(86Kr, X), E=140 MeV/nucleon]; measured decay products, Eγ, Iγ; deduced T1/2, cumulative β-decay intensities, B(GT). Comparison with available data.

doi: 10.1016/j.nuclphysa.2021.122359
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Data from this article have been entered in the XUNDL database. For more information, click here.


2022SC17      J.Phys.(London) G49, 110502 (2022)

H.Schatz, A.D.Becerril Reyes, A.Best, E.F.Brown, K.Chatziioannou, K.A.Chipps, C.M.Deibel, R.Ezzeddine, D.K.Galloway, C.J.Hansen, F.Herwig, A.P.Ji, M.Lugaro, Z.Meisel, D.Norman, J.S.Read, L.F.Roberts, A.Spyrou, I.Tews, F.X.Timmes, C.Travaglio, N.Vassh, C.Abia, P.Adsley, S.Agarwal, M.Aliotta, W.Aoki, A.Arcones, A.Aryan, A.Bandyopadhyay, A.Banu, D.W.Bardayan, J.Barnes, A.Bauswein, T.C.Beers, J.Bishop, T.Boztepe, B.Cote, M.E.Caplan, A.E.Champagne, J.A.Clark, M.Couder, A.Couture, S.E.de Mink, S.Debnath, R.J.deBoer, J.den Hartogh, P.Denissenkov, V.Dexheimer, I.Dillmann, J.E.Escher, M.A.Famiano, R.Farmer, R.Fisher, C.Frohlich, A.Frebel, C.Fryer, G.Fuller, A.K.Ganguly, S.Ghosh, B.K.Gibson, T.Gorda, K.N.Gourgouliatos, V.Graber, M.Gupta, W.C.Haxton, A.Heger, W.R.Hix, W.C.G.Ho, E.M.Holmbeck, A.A.Hood, S.Huth, G.Imbriani, R.G.Izzard, R.Jain, H.Jayatissa, Z.Johnston, T.Kajino, A.Kankainen, G.G.Kiss, A.Kwiatkowski, M.La Cognata, A.M.Laird, L.Lamia, P.Landry, E.Laplace, K.D.Launey, D.Leahy, G.Leckenby, A.Lennarz, B.Longfellow, A.E.Lovell, W.G.Lynch, S.M.Lyons, K.Maeda, E.Masha, C.Matei, J.Merc, B.Messer, F.Montes, A.Mukherjee, M.R.Mumpower, D.Neto, B.Nevins, W.G.Newton, L.Q.Nguyen, K.Nishikawa, N.Nishimura, F.M.Nunes, E.O'Connor, B.W.O'Shea, W.-J.Ong, S.D.Pain, M.A.Pajkos, M.Pignatari, R.G.Pizzone, V.M.Placco, T.Plewa, B.Pritychenko, A.Psaltis, D.Puentes, Y.-Z.Qian, D.Radice, D.Rapagnani, B.M.Rebeiro, R.Reifarth, A.L.Richard, N.Rijal, I.U.Roederer, J.S.Rojo, J.S K, Y.Saito, A.Schwenk, M.L.Sergi, R.S.Sidhu, A.Simon, T.Sivarani, A.Skuladottir, M.S.Smith, A.Spiridon, T.M.Sprouse, S.Starrfield, A.W.Steiner, F.Strieder, I.Sultana, R.Surman, T.Szucs, A.Tawfik, F.Thielemann, L.Trache, R.Trappitsch, M.B.Tsang, A.Tumino, S.Upadhyayula, J.O.Valle Martinez, M.Van der Swaelmen, C.Viscasillas Vazquez, A.Watts, B.Wehmeyer, M.Wiescher, C.Wrede, J.Yoon, R.G.T.Zegers, M.A.Zermane, M.Zingale, the Horizon 2020 Collaborations

Horizons: nuclear astrophysics in the 2020s and beyond

doi: https://dx.doi.org/10.1088/1361-6471/ac8890
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2022ST09      Nucl.Instrum.Methods Phys.Res. A1025, 166166 (2022)

A.Stamatopoulos, P.Koehler, A.Couture, B.DiGiovine, G.Rusev, J.Ullmann

New capability for neutron transmission measurements at LANSCE: The DICER instrument

NUCLEAR REACTIONS 209Bi, Cd, Gd, 95Mo(n, X), E<3 keV; measured reaction products, En, In, TOF; deduced transmission. The DICER (Device for Indirect Capture Experiments on Radionuclides) instrument, Los Alamos Neutron Science Center (LANSCE).

doi: 10.1016/j.nima.2021.166166
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2021CO15      Phys.Rev. C 104, 054608 (2021)

A.Couture, R.F.Casten, R.B.Cakirli

Significantly improved estimates of neutron capture cross sections relevant to the r process

NUCLEAR REACTIONS 149,151,152,153,154,155Nd, 151,153,154,155,156,157,158Pm, 151,153,155,156,157,158,159Sm, 157,158,159,160,161,162Eu, 159,161Gd, 161Tb, 158,165,166,167Dy, 167,168,169,170Ho, 169,171Er, 171,172,173,174Tm, 175,177Yb, 177,178,179,180,181,182Lu, 172,175,181,183,184,185Hf, 179,181,182,183,184,185,186Ta, 176,178,181,187,188,189W(n, γ), E=30 keV; 116,118,119,121,123,125,127,129,131,132Te, 123,125,126,127,128,129,130,131,132,133I, 122,125,127,129,131,133Xe, 127,129,131,132,133,134,135Cs, 126,128,129,131,133,135Ba, 143,145Ce, 143,144,145,146Pr, 145,146,147Nd, 188,190,191,192,193,194,195,197,199,201,203Hg(n, γ), E=30 keV; 180,182,185,187,189,191,193,194,195Os, 189,191,193,194,195,196,197,198Ir, 186,188,191,192,193,194,195,197,199,200,201Pt(n, γ), E=30 keV; 224,225,226,227Rn, 222,223,224,225,226,227,228,229,230,231,232,233Ra, 229,231,233,234Ac, 224,226,228,230,231,233,234,235Th, 235Pa, 232,235,237,239U, 239Np, 236,238,241,243,245Pu, 242,245,247,248,249Cm, 249Bk, 246,248,250,251,252,253Cf, 253Es, 252,254,255Fm(n, γ), E=30 keV; predicted Maxwellian-averaged cross section (σMACS) from fitting of correlation between S(2n) and neutron capture cross sections at kT=5-100 keV neutron energies, with S(2n) taken from AME2016. Relevance to r process nucleosynthesis and elemental abundances.

COMPILATION 120,122,124,126,128,130Te, 124,126,128,130,132,134Xe, 130,132,134,136Ba, 148,150Nd, 150,152,154Sm, 152,154,156,158,160Gd, 156,160,162,164Dy, 162,164,166,168,170Er, 168,170,172,174,176Yb, 174,176,178,180,182Hf, 180,182,184,186W(n, γ), E=5-100 keV; 155,157Gd, 161,163Dy, 167Er, 171,173Yb, 177,179Hf, 183,185W(n, γ), E=5-100 keV; 151,153,155Eu, 159Tb, 163,165Ho, 169Tm, 175Lu, 181Ta(n, γ), E=5-100 keV; 184,186,188,190,192Os, 190,196,198Pt, 142Ce, 144Nd, 196,198,200,202,204Hg(n, γ), E=5-100 keV; 232Th, 234,236,238U, 240,242Pu, 244,246Cm, 127,129I, 133,135Cs, 154Eu, 176Lu(n, γ), E=30 keV; compiled S(2n) from AME2016, and Maxwellian-averaged cross section (σMACS) from KADoNiS database, NNDC webpage (www.nndc.bnl.gov/astro/), and 2011Ch57: Nucl. Data Sheets 112, 2887.

doi: 10.1103/PhysRevC.104.054608
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2021DE13      Phys.Rev. C 103, 055815 (2021)

R.J.deBoer, O.Clarkson, A.J.Couture, J.Gorres, F.Herwig, I.Lombardo, P.Scholz, M.Wiescher

19F(p, γ)20Ne and 19F(p, αγ)16O reaction rates and their effect on calcium production in Population III stars from hot CNO breakout

NUCLEAR REACTIONS 19F(p, αγ)16O, E(cm)<865 keV; 19F(p, p), E(cm)=0.5-0.9 MeV; analyzed and evaluated available experimental data for σ(E, θ), differential S factors, angular distributions, R-matrix fit to secondary γ-ray data, secondary on-resonance γ-ray angular distributions. 16O; deduced levels, resonance energies, J, π, Γp, Γα, Γγ. 19F(p, γ)20Ne, E(cm)<0.8 MeV; analyzed and evaluated experimental data for S factor. 20Ne; deduced levels, resonance energies, J, π, resonance strengths, Γp, Γγ, Γα, Γtotal. 19F(p, γ)20Ne, 19F(p, αγ)16O, T=0.01-1 GK; recommended astrophysical reaction rates, and compared with compilation in NACRE database. Phenomenological R-matrix approach. Discussed astrophysical impact of the evaluated data, and recommended further measurements of importance, for example proton transfer studies needed to determine the proton ANCs of proton bound states. Relevance to the presence of Ca in Fe-poor stars in hot CNO breakout H-burning nucleosynthesis.

doi: 10.1103/PhysRevC.103.055815
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2021PE08      Phys.Rev. C 103, 055808 (2021)

C.F.Persch, P.A.DeYoung, S.Lyons, A.Spyrou, S.N.Liddick, F.Naqvi, B.P.Crider, A.C.Dombos, J.Gombas, D.L.Bleuel, B.A.Brown, A.Couture, L.Crespo Campo, J.Engel, M.Guttormsen, A.C.Larsen, R.Lewis, S.Karampagia, S.Mosby, E.M.Ney, A.Palmisano, G.Perdikakis, C.J.Prokop, T.Renstrom, S.Siem, M.K.Smith, S.J.Quinn

β-decay feeding intensity distributions of 71, 73Ni

RADIOACTIVITY 71,73Ni(β-)[from 9Be(86Kr, X), E=140 MeV/nucleon, followed by separation of fragments using A1900 fragment separator at NSCL-MSU facility]; measured implantation events and β particles using position-sensitive, double-sided, silicon-strip detector (DSSD), and two silicon PIN detectors for TOF and energy loss, Eγ, Iγ, half-lives of decays of 71,73Ni using a total absorption summing NaI(Tl) detector (SuN) surrounding the DSSD; deduced multiplicity spectra, Iβ(E) feedings, B(GT). GEANT4 and DICEBOX analysis of total absorption spectrum (TAS). Comparison with QRPA, and shell-model calculations, the latter using NuShellX@MSU code with JJ44B and JUN45 interaction Hamiltonians. Relevance to improvement in the nuclear input for r-process calculations.

NUCLEAR REACTIONS 9Be(86Kr, X)71Ni/73Ni/71Cu/73Cu/, E=140 MeV/nucleon; measured yields of reaction products using A1900 fragment separator and two silicon PIN detectors for TOF and energy loss at NSCL-MSU facility.

doi: 10.1103/PhysRevC.103.055808
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Data from this article have been entered in the XUNDL database. For more information, click here.


2020SI05      Phys.Rev. C 101, 024302 (2020)

N.Simbirtseva, M.Krticka, R.F.Casten, A.Couture, W.I.Furman, I.Knapova, J.M.O'Donnell, G.Rusev, J.L.Ullmann, S.Valenta

Examination of photon strength functions and nuclear level density in 196Pt from the γ-ray spectra measured at the DANCE facility

NUCLEAR REACTIONS 195Pt(n, γ), E=9-1000 eV; measured E(n) by time of flight, Eγ, Iγ, γγ-coin, multi-step γ-ray cascades (MSCs) using the segmented γ-ray Detector for Advanced Neutron Capture (DANCE) of 160 BaF2 crystals at the Los Alamos Neutron Science Center (LANSC). 196Pt; deduced nuclear level density (NLD) and photon strength functions (PSFs); confirmed E1 PSF resonance at ≈5.6 MeV. Comparison of experimental MSC spectra with previous experimental data from Oslo and others, and with constant-temperature (CT) and back-shifted Fermi-gas (BSFG) model calculations.

doi: 10.1103/PhysRevC.101.024302
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2019AB12      J.Phys.(London) G46, 100501 (2019)

E.P.Abel, M.Avilov, V.Ayres, E.Birnbaum, G.Bollen, G.Bonito, T.Bredeweg, H.Clause, A.Couture, J.DeVore, M.Dietrich, P.Ellison, J.Engle, R.Ferrieri, J.Fitzsimmons, M.Friedman, D.Georgobiani, S.Graves, J.Greene, S.Lapi, C.S.Loveless, T.Mastren, C.Martinez-Gomez, S.McGuinness, W.Mittig, D.Morrissey, G.Peaslee, F.Pellemoine, J.D.Robertson, N.Scielzo, M.Scott, G.Severin, D.Shaughnessy, J.Shusterman, J.Singh, M.Stoyer, L.Sutherlin, A.Visser, J.Wilkinson

Isotope harvesting at FRIB: additional opportunities for scientific discovery

doi: 10.1088/1361-6471/ab26cc
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2019EB01      Phys.Rev. C 99, 064603 (2019)

A.Ebran, O.Roig, V.Meot, M.Jandel, C.Theroine, E.M.Bond, T.A.Bredeweg, A.Couture, F.M.Nortier, J.M.O'Donnell, W.A.Taylor, J.L.Ullmann, D.J.Vieira

Cross section for the neutron radiative capture on 173Lu nuclei

NUCLEAR REACTIONS 173,174,175Lu(n, γ), (n, X), E=0.025-200 eV; measured Eγ, Iγ, and neutron radiative capture σ(E) using the DANCE detector with high-γ activity target at the Los Alamos Neutron Science Center (LANSCE) spallation neutron source facility; deduced resonance energies, J, Γγ, Γn for 102 resonances from 3.1-202.8 eV for 173Lu(n, γ). TALYS and SAMMY codes used for analysis of resonance data, and QRPA model for interpretation of the high gamma activity target.

doi: 10.1103/PhysRevC.99.064603
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset14410. Data from this article have been entered in the XUNDL database. For more information, click here.


2019FI01      Phys.Rev. D 99, 103021 (2019)

V.Fischer, L.Pagani, L.Pickard, A.Couture, S.Gardiner, C.Grant, J.He, T.Johnson, E.Pantic, C.Prokop, R.Svoboda, J.Ullmann, J.Wang, for the ACED Collaboration

Measurement of the neutron capture cross section on argon

NUCLEAR REACTIONS 40Ar(n, γ), E=0.0147-0.14125 eV; measured reaction products; deduced thermal neutron σ.

doi: 10.1103/physrevd.99.103021
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset14568.


2019LE05      Phys.Rev. C 99, 034601 (2019)

R.Lewis, S.N.Liddick, A.C.Larsen, A.Spyrou, D.L.Bleuel, A.Couture, L.Crespo Campo, B.P.Crider, A.C.Dombos, M.Guttormsen, S.Mosby, F.Naqvi, G.Perdikakis, C.J.Prokop, S.J.Quinn, T.Renstrom, S.Siem

Experimental constraints on the 73Zn(n, γ)74Zn reaction rate

RADIOACTIVITY 74Cu(β-)[74Cu ions from Be(86Kr, X), E=140 MeV/nucleon reaction and using A1900 separator at NSCL-MSU facility]; measured β particles, Eγ, Iγ, βγ-coin, half-life of 74Cu decay using the Summing NaI detector for total absorption spectroscopy (TAS); deduced nuclear level density (NLD), and γ strength function (γSF) using the β-Oslo method, distribution of spins for levels in 74Zn around S(n). Comparison with previous experimental results, and with theoretical calculations using TALYS code. Results used to deduce σ for 73Zn(n, γ) reaction.

NUCLEAR REACTIONS 73Zn(n, γ), E=0.01-1 MeV; deduced σ(E), and astrophysical reaction rates using the experimental NLD and γSF. Comparison with Hauser-Feshbach statistical model calculations using TALYS code.

doi: 10.1103/PhysRevC.99.034601
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Data from this article have been entered in the XUNDL database. For more information, click here.


2019LI35      Phys.Rev. C 100, 024624 (2019)

S.N.Liddick, A.C.Larsen, M.Guttormsen, A.Spyrou, B.P.Crider, F.Naqvi, J.E.Midtbo, F.L.Bello Garrote, D.L.Bleuel, L.Crespo Campo, A.Couture, A.C.Dombos, F.Giacoppo, A.Gorgen, K.Hadynska-Klek, T.W.Hagen, V.W.Ingeberg, B.V.Kheswa, R.Lewis, S.Mosby, G.Perdikakis, C.J.Prokop, S.J.Quinn, T.Renstrom, S.J.Rose, E.Sahin, S.Siem, G.M.Tveten, M.Wiedeking, F.Zeiser

Benchmarking the extraction of statistical neutron capture cross sections on short-lived nuclei for applications using the β-Oslo method

RADIOACTIVITY 51Sc(β-)[from 9Be(86Kr, X), E=140 MeV/nucleon]; measured Eβ, Iβ, Eγ, Iγ, βγ-coin; deduced level density, γ-strength function. Measurement was performed at NSCL using the Summing NaI(Tl) detector SuN, used as a TAS.

NUCLEAR REACTIONS 50Ti(d, p)51Ti, E=12.5 MeV; measured Ep, Ip, Eγ, Iγ, γp-coin; deduced nuclear level density (NLD), γ strength function (γSF). Measurement was performed at the Oslo Cyclotron Laboratory, Sweden using the CACTUS NaI scintillator array.

doi: 10.1103/PhysRevC.100.024624
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2019LY02      Phys.Rev. C 100, 025806 (2019)

S.Lyons, A.Spyrou, S.N.Liddick, F.Naqvi, B.P.Crider, A.C.Dombos, D.L.Bleuel, B.A.Brown, A.Couture, L.Crespo Campo, J.Engel, M.Guttormsen, A.C.Larsen, R.Lewis, P.Moller, S.Mosby, M.R.Mumpower, E.M.Ney, A.Palmisano, G.Perdikakis, C.J.Prokop, T.Renstrom, S.Siem, M.K.Smith, S.J.Quinn

69, 71Co β-decay strength distributions from total absorption spectroscopy

RADIOACTIVITY 69,71Co(β-)[from 9Be(86Kr, X), E=140 MeV/nucleon, followed by in flight separation of fragments by the A1900 fragment separator at NSCL-MSU]; measured Eγ, Iγ, Eβ, βγ-coin, half-lives of decays of 69,71Co decays, total absorption spectra using Summing NaI(Tl) (SuN) detector for γ rays and double-sided silicon strip detector (DSSD) for β; deduced cumulative Iβ distributions and compared to QRPA and Skyrme QRPA calculations, Gamow-Teller (GT) strength distribution. Comparison of decay half-lives with ENSDF values, and theoretical calculations using shell mode, QRPA and Skyrme QRPA. Relevance to r process in nucleosynthesis.

doi: 10.1103/PhysRevC.100.025806
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Data from this article have been entered in the XUNDL database. For more information, click here.


2019PR03      Phys.Rev. C 99, 055809 (2019)

C.J.Prokop, A.Couture, S.Jones, S.Mosby, G.Rusev, J.Ullmann, M.Krticka

Measurement of the 65Cu(n, γ) cross section using the Detector for Advanced Neutron Capture Experiments at LANL

NUCLEAR REACTIONS 65Cu(n, γ), E=10 eV-1 MeV; measured E(n), I(n), Eγ, Iγ, nγ-coin, σ(E) using the DANCE detector at LANSCE; deduced Maxwellian averaged cross section, and final composition of supernovae ejecta using new reaction rate. Comparison with evaluated data in ENDF/B-VIII.0 library and KADoNiS v0.3 database.

doi: 10.1103/PhysRevC.99.055809
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset14571.


2019WI03      Phys.Rev. C 99, 024318 (2019)

J.R.Winkelbauer, S.M.Mosby, A.Couture, H.Y.Lee, J.L.Ullmann, T.Kawano, G.Rusev, M.Jandel, M.Krticka

Statistical neutron capture in the limit of low nuclear level density

NUCLEAR REACTIONS 96Zr, 208Pb(n, γ), E=thermal, 301, 3818, 4133, 5443, 5971, 9004, 17779 eV; measured Eγ, Iγ, γγ-coin, Spectra of γ-ray cascades using DANCE array at the LANSCE-LANL facility. 97Zr; deduced photon strength function (γPSF), multiplicity distributions for resonances. Comparison with simulated γ spectra from DICEBOX calculations for the cascades from the capture state and neutron resonances, and with ENSDF/B-VII.1 evaluation. Maxwellian averaged cross section (MACS).

doi: 10.1103/PhysRevC.99.024318
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2018LA07      Phys.Rev. C 97, 054329 (2018)

A.C.Larsen, J.E.Midtbo, M.Guttormsen, T.Renstrom, S.N.Liddick, A.Spyrou, S.Karampagia, B.A.Brown, O.Achakovskiy, S.Kamerdzhiev, D.L.Bleuel, A.Couture, L.Crespo Campo, B.P.Crider, A.C.Dombos, R.Lewis, S.Mosby, F.Naqvi, G.Perdikakis, C.J.Prokop, S.J.Quinn, S.Siem

Enhanced low-energy γ-decay strength of 70Ni and its robustness within the shell model

RADIOACTIVITY 70Co(β-)[from 9Be(86Kr, X), E=140 MeV/nucleon followed by fragment separation using A1900 fragment separator at NSCL-MSU]; measured Eγ, Iγ, summed γ energies, β-γ-coin using double-sided silicon strip detector (DSSD) for electrons placed in the center of the Summing NaI (SuN) total absorption spectrometer for γ radiation. 70Ni; deduced nuclear level density (NLD) and γ-strength function (γSF) using β-Oslo method. Comparison with previous experimental results, and with HFB+c calculations.

NUCLEAR STRUCTURE 70Ni; calculated levels, J, π, B(E2), level densities, γSF, summed γSF, and M1 γ strengths for A=56-76 Ni isotopes. Quasiparticle time-blocking approximation and large-scale shell-model calculations with CA48MH1G and JUN45 interactions. Comparison with experimental results.

doi: 10.1103/PhysRevC.97.054329
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2018MO06      Nucl.Data Sheets 148, 312 (2018)

S.Mosby, T.A.Bredeweg, A.Couture, M.Jandel, T.Kawano, J.Ullmann, R.A.Henderson, C.Y.Wu

239Pu(n, γ) from 10 eV to 1.3 MeV

NUCLEAR REACTIONS 239Pu(n, γ), E=0.00001-1.3 MeV; measured reaction products, Eγ, Iγ; deduced σ and uncertainties. Detector for Advanced Neutron Capture Experiments (DANCE). Comparison with theoretical calculations.

doi: 10.1016/j.nds.2018.02.007
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset14794.


2018MO08      Phys.Rev. C 97, 041601 (2018)

S.Mosby, T.A.Bredeweg, A.Couture, M.Jandel, T.Kawano, J.L.Ullmann, R.A.Henderson, C.Y.Wu

Unifying measurement of 239Pu(n, γ) in the keV to MeV energy regime

NUCLEAR REACTIONS 239Pu(n, γ), E=0.001-1.3 MeV; measured Eγ, Iγ, σ(E), using the Detector for Advanced Neutron Capture Experiments (DANCE) at LANL-LANSCE facility. Comparison with previous experimental results, evaluated data in ENDF/B-VII.1, ENDF/B-VIII.0, JENDL-4, and with theoretical calculations using CoH3 for the M1 scissors mode.

doi: 10.1103/PhysRevC.97.041601
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2018ZH34      Astrophys.J. 863, L23 (2018)

Y.Zhu, R.T.Wollaeger, N.Vassh, R.Surman, T.M.Sprouse, M.R.Mumpower, P.Moller, G.C.McLaughlin, O.Korobkin, T.Kawano, P.J.Jaffke, E.M.Holmbeck, C.L.Fryer, W.P.Even, A.J.Couture, J.Barnes

Californium-254 and Kilonova Light Curves

RADIOACTIVITY 254Cf(SF); calculated abundance, fission product yields, heating rates, mid-IR light curves.

doi: 10.3847/2041-8213/aad5de
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2017AR04      Prog.Part.Nucl.Phys. 94, 1 (2017)

A.Arcones, D.W.Bardayan, T.C.Beers, L.A.Bernstein, J.C.Blackmon, B.Messer, B.A.Brown, E.F.Brown, C.R.Brune, A.E.Champagne, A.Chieffi, A.J.Couture, P.Danielewicz, R.Diehl, M.El Eid, J.E.Escher, B.D.Fields, C.Frohlich, F.Herwig, W.R.Hix, C.Iliadis, W.G.Lynch, G.C.McLaughlin, B.S.Meyer, A.Mezzacappa, F.Nunes, B.W.O'Shea, M.Prakash, B.Pritychenko, S.Reddy, E.Rehm, G.Rogachev, R.E.Rutledge, H.Schatz, M.S.Smith, I.H.Stairs, A.W.Steiner, T.E.Strohmayer, F.X.Timmes, D.M.Townsley, M.Wiescher, R.G.T.Zegers, M.Zingale

White paper on nuclear astrophysics and low energy nuclear physics Part 1: Nuclear astrophysics

doi: 10.1016/j.ppnp.2016.12.003
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2017BA28      Phys.Rev. C 96, 024619 (2017)

B.Baramsai, M.Jandel, T.A.Bredeweg, E.M.Bond, A.R.Roman, G.Rusev, C.L.Walker, A.Couture, S.Mosby, J.M.O'Donnell, J.L.Ullmann, T.Kawano

Radiative neutron capture cross section from 236U

NUCLEAR REACTIONS 236U(n, γ), E=10 eV-800 keV; measured neutron time-of-flight spectrum, Eγ, Iγ, (n-resonance)γ-coin using the Detector for Advanced Neutron Capture Experiments (DANCE) γ-ray calorimeter at the Los Alamos Neutron Science Center; deduced multistep cascade spectra and multiplicity distribution of strong resonances, average multiplicity of resonances, capture σ(E), energies, Γγ, and Γn of neutron resonances for E(n)=29.8-998.1 eV. R-matrix analysis using code SAMMY. Comparison with earlier experimental data, and with ENDF/B-VII.1 and JEFF-3.2 nuclear data libraries.

doi: 10.1103/PhysRevC.96.024619
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset14481. Data from this article have been entered in the XUNDL database. For more information, click here.


2017BU04      Phys.Rev. C 95, 024610 (2017)

M.Q.Buckner, C.Y.Wu, R.A.Henderson, B.Bucher, N.Wimer, A.Chyzh, T.A.Bredeweg, B.Baramsai, A.Couture, M.Jandel, S.Mosby, J.L.Ullmann

Measurement of the 242mAm neutron-induced reaction cross sections

NUCLEAR REACTIONS 242mAm(n, γ), (n, F), E=0.023-0.98 eV; measured Eγ, Iγ, σ(E) for both reactions using DANCE array of 160 BaF2 crystals at LANSCE-LLNL facility. Comparison with previous experimental data.

doi: 10.1103/PhysRevC.95.024610
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset14471.


2017BU10      Phys.Rev. C 95, 061602 (2017)

M.Q.Buckner, C.Y.Wu, R.A.Henderson, B.Bucher, N.Wimer, A.Chyzh, T.A.Bredeweg, B.Baramsai, A.Couture, M.Jandel, S.Mosby, J.L.Ullmann

Comprehensive 242mAm neutron-induced reaction cross sections and resonance parameters

NUCLEAR REACTIONS 242mAm(n, γ), (n, F), E=0.1 eV to 1 MeV; measured Eγ, Iγ, neutron capture and neutron-induced fission σ(E) using DANCE array of 160 equal-volume BaF2 crystals at the LANSCE-LLNL Lujan Neutron Scattering Center; deduced neutron-induced resonance energies, Γγ, Γn, and Γf of 106 resonances with energies between 0.15 and 45 eV by analyzing spectra using the R-matrix code SAMMY. Comparison with previous experimental data, and with evaluated data in ENDF/B-VII.1.

doi: 10.1103/PhysRevC.95.061602
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset14471.


2017CO16      Phys.Rev. C 96, 061601 (2017)

A.Couture, R.F.Casten, R.B.Cakirli

Simple, empirical approach to predict neutron capture cross sections from nuclear masses

NUCLEAR REACTIONS 156,158,160,162Nd, 158,160,162,164,166,168Sm, 168Gd, 154,156Dy, 174,176,178W(n, γ), kT=30 keV; deduced Maxwellian capture cross sections from empirical fits of experimental neutron capture cross sections to S(2n) values. Similar analysis carried out for other nuclei such as N>82 Ce, Nd, Hg, Os, Pt, Z=52-56 and odd-N, Z=60-74 nuclei. Comparison with predictions from TALYS and NONSMOKER models. Proposed a simple empirical approach to correlate neutron capture cross sections and nuclear masses. Relevance to astrophysical s- and r-processes, modeling of nuclear reactor designs, and nuclear forensics applications.

doi: 10.1103/PhysRevC.96.061601
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2017SP03      J.Phys.(London) G44, 044002 (2017)

A.Spyrou, A.C.Larsen, S.N.Liddick, F.Naqvi, B.P.Crider, A.C.Dombos, M.Guttormsen, D.L.Bleuel, A.Couture, L.Crespo Campo, R.Lewis, S.Mosby, M.R.Mumpower, G.Perdikakis, C.J.Prokop, S.J.Quinn, T.Renstrom, S.Siem, R.Surman

Neutron-capture rates for explosive nucleosynthesis: the case of 68Ni(n, γ)69Ni

RADIOACTIVITY 69Co(β-); measured decay products, Eγ, Iγ; deduced the γ-ray strength function and the nuclear level density, T1/2. Comparison with available data.

doi: 10.1088/1361-6471/aa5ae7
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset14476. 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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2017VA25      Phys.Rev. C 96, 054315 (2017)

S.Valenta, B.Baramsai, T.A.Bredeweg, A.Couture, A.Chyzh, M.Jandel, J.Kroll, M.Krticka, G.E.Mitchell, J.M.O'Donnell, G.Rusev, J.L.Ullmann, C.L.Walker

Examination of photon strength functions for 162, 164Dy from radiative capture of resonance neutrons

NUCLEAR REACTIONS 161,163Dy(n, γ), E=10-40 s-wave neutrons; measured time-of-flight spectrum for neutrons, Eγ, Iγ using segmented γ-ray calorimeter Detector for Advanced Neutron Capture Experiments (DANCE), an array of BaF2 scintillators at Los Alamos Neutron Science Center (LANSCE) spallation neutron source; deduced neutron resonances, cluster multiplicities, multistep cascade (MSC) spectra, E1 and M1 photon strength functions (PSFs) as function of γ-ray energy, total radiation widths, scissors mode, nuclear level density. Comparison with other experimental data, and with statistical model calculations.

doi: 10.1103/PhysRevC.96.054315
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2017WE02      Phys.Rev. C 95, 015808 (2017)

M.Weigand, C.Beinrucker, A.Couture, S.Fiebiger, M.Fonseca, K.Gobel, M.Heftrich, T.Heftrich, M.Jandel, F.Kappeler, A.Krasa, C.Lederer, H.Y.Lee, R.Plag, A.Plompen, R.Reifarth, S.Schmidt, K.Sonnabend, J.L.Ullmann

63Cu (n, γ) cross section measured via 25 keV activation and time of flight

NUCLEAR REACTIONS 63Cu(n, γ), E=75 eV to 500 keV; measured Eγ, Iγ, time of flight, σ(E) by activation with a quasistellar neutron spectrum at JRC-Geel, and the energy dependence of the cross section measured with an isotopically enriched 63Cu sample placed in the center of the DANCE detector array at LANSCE-LANL facility; deduced Maxwellian-averaged cross sections for the whole temperature range relevant for different scenarios of the s-process nucleosynthesis. Comparison with previous experimental measurements and with evaluated cross sections from TENDL-2015.

doi: 10.1103/PhysRevC.95.015808
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset14467.


2016AL19      Phys.Rev. C 94, 034617 (2016)

J.B.Albert, S.J.Daugherty, T.N.Johnson, T.O'Conner, L.J.Kaufman, A.Couture, J.L.Ullmann, M.Krticka

Measurement of neutron capture on 136Xe

NUCLEAR REACTIONS 136Xe(n, γ), E=0.01 eV to 1 MeV; measured prompt Eγ, Iγ, multistep cascade (MSC) spectra using DANCE Los Alamos Neutron Science Center; deduced relative and absolute cross sections, neutron resonance at 2.154 keV, capture cascade γ-ray emission intensities by DICEBOX simulations. Comparison of measured cross section with previous experimental results, and with evaluated data in ENDF-B/VII.1 and JENDL-4.0. Relevance to experiments on 136Xe 0νββ decay and presence of 137Xe contaminant in such experiments.

doi: 10.1103/PhysRevC.94.034617
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset14460.


2016BU09      Phys.Rev. C 93, 044613 (2016)

M.Q.Buckner, C.Y.Wu, R.A.Henderson, B.Bucher, A.Chyzh, T.A.Bredeweg, B.Baramsai, A.Couture, M.Jandel, S.Mosby, J.M.O'Donnell, J.L.Ullmann

Absolute measurement of the 242Pu neutron-capture cross section

NUCLEAR REACTIONS 242Pu(n, γ), E=thermal-several hundred keV; measured Eγ, Iγ, summed γ-ray energy versus cluster multiplicity using LANSC-DANCE at LLNL facility, absolute σ(E) from thermal to ≈40 keV neutrons; deduced energies, Γγ and Γn of neutron resonances from 2.662 eV to 495.0 eV. Comparison with literature and evaluated data in ENDF/B-VII.1.

doi: 10.1103/PhysRevC.93.044613
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset14456.


2016CA41      Phys.Rev. C 94, 061303 (2016)

R.F.Casten, J.Jolie, R.B.Cakirli, A.Couture

Finite valence nucleon number and rotation-vibration interactions

NUCLEAR STRUCTURE 168Er; calculated relative interband B(E2) values with bandmixing formalism and Partial Dynamical Symmetry SU(3) model for deformed nuclei; derived relation between the two approaches. Linkage of rotation-vibration coupling to valence nucleon number. General formalism in the paper with an example of 168Er.

doi: 10.1103/PhysRevC.94.061303
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2016DE30      Phys.Rev. C 94, 054612 (2016)

D.Denis-Petit, O.Roig, V.Meot, B.Morillon, P.Romain, M.Jandel, T.Kawano, D.J.Vieira, E.M.Bond, T.A.Bredeweg, A.J.Couture, R.C.Haight, A.L.Keksis, R.S.Rundberg, J.L.Ullmann

Isomeric ratio measurements for the radiative neutron capture 176Lu(n, γ) at the LANL DANCE facility

NUCLEAR REACTIONS 176Lu(n, γ), E=8.5 eV-100 keV; measured Eγ, Iγ, delayed γ spectra using DANCE array at the LANSCE-LANL facility; deduced isomeric ratios to the 5/2-, 761.7 keV and 15/2+, 1356.9 keV nanosecond isomers in 177Lu. Comparison with TALYS calculations using different models for photon strength functions, level densities, and optical potentials.

doi: 10.1103/PhysRevC.94.054612
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset14455.


2016LI30      Phys.Rev.Lett. 116, 242502 (2016)

S.N.Liddick, A.Spyrou, B.P.Crider, F.Naqvi, A.C.Larsen, M.Guttormsen, M.Mumpower, R.Surman, G.Perdikakis, D.L.Bleuel, A.Couture, L.C.Campo, A.C.Dombos, R.Lewis, S.Mosby, S.Nikas, C.J.Prokop, T.Renstrom, B.Rubio, S.Siem, S.J.Quinn

Experimental Neutron Capture Rate Constraint Far from Stability

RADIOACTIVITY 70Co(β-) [from 9Be(86Kr, X), E=140 MeV/nucleon]; measured decay products, Eγ, Iγ; deduced nuclear level density as a function of excitation energy. Comparison with available data.

NUCLEAR REACTIONS 69Ni(n, γ), E<10 GK; calculated nuclear reaction capture rates using experimental level densities and code TALYS.

doi: 10.1103/PhysRevLett.116.242502
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2016RO08      Phys.Rev. C 93, 034602 (2016)

O.Roig, M.Jandel, V.Meot, E.M.Bond, T.A.Bredeweg, A.J.Couture, R.C.Haight, A.L.Keksis, R.S.Rundberg, J.L.Ullmann, D.J.Vieira

Radiative neutron capture cross sections on 176Lu at DANCE

NUCLEAR REACTIONS 176Lu(n, γ), E=0.02-100 keV; measured Eγ, Iγ, neutron flux, σ(E) using 4π BaF2 array DANCE at LANSCE-LANL; deduced radiative capture yield as function of neutron energy, resonances from 0.138-906 eV, J, Γγ and Γn versus neutron energy, resonance parameters using R-matrix analysis with SAMMY-7.0 code, Maxwellian averaged cross sections (MACS) in a stellar plasma for thermal energies between 5-100 keV. Comparison with theoretical calculations and evaluations in Atlas of Neutron resonances (2006), ENSDF/B-VII.1, JEFF-3.2, BRC and KADoNiS databases, and with previous experimental data.

doi: 10.1103/PhysRevC.93.034602
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset14244. Data from this article have been entered in the XUNDL database. For more information, click here.


2016SP04      Phys.Rev.Lett. 117, 142701 (2016)

A.Spyrou, S.N.Liddick, F.Naqvi, B.P.Crider, A.C.Dombos, D.L.Bleuel, B.A.Brown, A.Couture, L.Crespo Campo, M.Guttormsen, A.C.Larsen, R.Lewis, P.Moller, S.Mosby, M.R.Mumpower, G.Perdikakis, C.J.Prokop, T.Renstrom, S.Siem, S.J.Quinn, S.Valenta

Strong Neutron-γ Competition above the Neutron Threshold in the Decay of 70Co

RADIOACTIVITY 70Co(β-) [9Be(86Kr, X)70Co, E=140 MeV/nucleon]; measured decay products, Eβ, Iβ, Eγ, Iγ; deduced β-decay intensity, the large fragmentation of the β intensity at high energies, as well as the strong competition between γ-rays and neutrons. Comparison with shell model calculations.

doi: 10.1103/PhysRevLett.117.142701
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2015CO01      Phys.Rev. C 91, 014312 (2015)

A.Couture, R.F.Casten, R.B.Cakirli

Extended tests of an SU(3) partial dynamical symmetry

NUCLEAR STRUCTURE 104,106,108Mo, 168Er, 228Ra, 228,230,232Th, 232,234,236,238U, 238,240Pu; calculated B(E2) for transitions between γ band and ground-state band members. Parameter-free description in terms of a partial SU(3) dynamical symmetry (PDS). Comparison with predictions of pure rotor (Alaga) model, and with experimental results.

doi: 10.1103/PhysRevC.91.014312
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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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2015WE14      Phys.Rev. C 92, 045810 (2015)

M.Weigand, T.A.Bredeweg, A.Couture, K.Gobel, T.Heftrich, M.Jandel, F.Kappeler, C.Lederer, N.Kivel, G.Korschinek, M.Krticka, J.M.O'Donnell, J.Ostermoller, R.Plag, R.Reifarth, D.Schumann, J.L.Ullmann, A.Wallner

63Ni(n, γ) cross sections measured with DANCE

NUCLEAR REACTIONS 63Ni(n, γ), E=40 eV-500 keV; measured Eγ, Iγ, σ(E) using 4π BaF2 array DANCE at LANSCE-LANL, neutron flux; deduced resonances, Maxwellian averaged cross sections (MACS), relative production of isotopes in the vicinity of 63Ni and Ni to As elements for the s process. Comparison with KADoNiS database and experimental data from n_TOF collaboration.

doi: 10.1103/PhysRevC.92.045810
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset14446. Data from this article have been entered in the XUNDL database. For more information, click here.


2014CA29      Phys.Rev.Lett. 113, 112501 (2014)

R.F.Casten, R.B.Cakirli, K.Blaum, A.Couture

Evidence for Partial Dynamical Symmetries in Atomic Nuclei

NUCLEAR STRUCTURE 166,168Er, 158Gd, 168Yb, 162Dy, 184W, 184,186Os; analyzed available data; deduced relative B(E2) values, transition properties. Comparison with experimental data.

doi: 10.1103/PhysRevLett.113.112501
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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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2014MO04      Phys.Rev. C 89, 034610 (2014)

S.Mosby, T.A.Bredeweg, A.Chyzh, A.Couture, R.Henderson, M.Jandel, E.Kwan, J.M.O'Donnell, J.Ullmann, C.Y.Wu

Improved neutron capture cross section of 239Pu

NUCLEAR REACTIONS 239Pu(n, γ), E=10-1000 eV; measured Eγ, Iγ, (fission fragment)γ-coin, time-of-flight spectrum, fission σ(E), ratio of capture to fission σ(E), α-particle derived capture σ(E), integrated σ using DANCE detector and a parallel-plate avalanche counter (PPAC) at LANSCE-LLNL facility. Comparison with theoretical calculations, ENDF/B-VII.1 evaluation, and with previous experimental data.

doi: 10.1103/PhysRevC.89.034610
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset14383.


2014MO21      Nucl.Data Sheets 119, 31 (2014)

S.Mosby, C.Arnold, T.A.Bredeweg, A.Chyzh, A.Couture, R.Henderson, M.Jandel, E.Kwan, J.M.O'Donnell, G.Rusev, J.L.Ullmann, C.Y.Wu

Neutron Capture Cross Section of 239Pu

NUCLEAR REACTIONS 239Pu(n, γ), E=10 eV - 100 keV; measured prompt fission Eγ, Iγ using DANCE; deduced σ. Preliminary. Compared to ENDF/B-VII.1.

doi: 10.1016/j.nds.2014.08.010
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset14383.


2014RO17      Nucl.Data Sheets 119, 165 (2014)

O.Roig, C.Theroine, A.Ebran, V.Meot, E.M.Bond, T.A.Bredeweg, A.Couture, R.C.Haight, M.Jandel, F.M.Nortier, J.M.O'Donnell, R.S.Rundberg, W.A.Taylor, J.L.Ullmann, D.J.Vieira

Measurement of 173Lu(n, γ) Cross Sections at DANCE

NUCLEAR REACTIONS 173Lu(n, γ), E=0-200 eV[target from Hf(p, xn)]; measured Eγ, Iγ using DANCE array; deduced radiative capture yield vs neutron energy, reduced neutron width vs neutron energy, resonances, resonance parameters; calculated radiative neutron capture σ from resonance parameters using SAMMY-7.0, σ from ROSFOND2010 data using TALYS.

doi: 10.1016/j.nds.2014.08.046
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset14410.


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.


2013BA15      Phys.Rev. C 87, 044609 (2013)

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

Photon strength functions of 156Gd from radiative capture of resonance neutrons

NUCLEAR REACTIONS 155Gd(n, γ), E=7.8, 21.0 eV; measured Eγ, Iγ, sum energy spectra, cluster multiplicity of γ cascades using DANCE γ-ray calorimeter at LANSCE facility; deduced spectra of multistep γ cascades (MSCs) and those of gated MSCs, E1 and M1 photon strength functions, scissors mode. DICEBOX algorithm. Validity of various photon strength functions (PSF), and nuclear level density (NLD) models Comparison with previous experimental studies, and with theoretical calculations.

doi: 10.1103/PhysRevC.87.044609
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2013CH15      Phys.Rev. C 87, 034620 (2013)

A.Chyzh, C.Y.Wu, E.Kwan, R.A.Henderson, J.M.Gostic, T.A.Bredeweg, A.Couture, R.C.Haight, A.C.Hayes-Sterbenz, M.Jandel, H.Y.Lee, J.M.O'Donnell, J.L.Ullmann

Systematics of prompt γ-ray emission in fission

NUCLEAR REACTIONS 235U, 239,241Pu(n, F), E=thermal to 1 MeV; measured prompt Eγ, Iγ, charged particles, (particle)γ(t), γ multiplicity, total γ-ray energy vs cluster multiplicity, TOF using DANCE array and PPACs at LANSCE facility. Possible population of pygmy resonances. Comparison of measured γ-ray multiplicity distributions with iterative Bayesian and SVD methods.

doi: 10.1103/PhysRevC.87.034620
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset14361.


2013CH48      Phys.Rev. C 88, 044607 (2013)

A.Chyzh, C.Y.Wu, E.Kwan, R.A.Henderson, J.M.Gostic, T.A.Bredeweg, A.Couture, R.C.Haight, H.Y.Lee, J.M.O'Donnell, J.L.Ullmann

Precision measurement of the 238Pu (n, γ) cross section

NUCLEAR REACTIONS 238Pu(n, γ), E=thermal-30 keV; measured Eγ, Iγ, summed-γ spectra, γ-ray multiplicity, precise σ(E) using DANCE array at LANSCE facility; deduced resonance parameters, energies, γ and neutron widths from 2.87 eV to 407 eV energy region. Comparison with evaluated data in ENDF/B-VII.1.

doi: 10.1103/PhysRevC.88.044607
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset14364.


2013EN02      Phys.Rev. C 88, 014604 (2013)

J.W.Engle, S.G.Mashnik, J.W.Weidner, L.E.Wolfsberg, M.E.Fassbender, K.Jackman, A.Couture, L.J.Bitteker, J.L.Ullmann, M.S.Gulley, C.Pillai, K.D.John, E.R.Birnbaum, F.M.Nortier

Cross sections from proton irradiation of thorium at 800 MeV

NUCLEAR REACTIONS 232Th(p, X)7Be/46Sc/48Sc/59Fe/74As/76As/77Br/82Br/86Rb/87Y/87mY/88Y/91Sr/95Nb/96Nb/95Tc/96Tc/99Tc/95Zr/99Mo/100Pd/100Rh/105Rh/103Ru/105Ru/106mAg/110mAg/111In/114mIn/115Cd/117mSn/120Sb/122Sb/124Sb/126Sb/127Sb/121mTe/123mTe/123I/124I/126I/130I/131I/133I/135I/127Xe/135Xe/131Ba/140Ba/134Cs/136Cs/139Ce/143Ce/188Pt/200Pb/203Bi/205Bi/204Po/206Po/207Po/209At/210At/211Rn/226Ac, E=800 MeV; measured Eγ, Iγ, σ by activation method at WNRF-LANSCE, Los Alamos facility. 99Mo, 139,143Ce, 140Ba, 203,205Bi, 223,225Ra, 225,226,227Ac; deduced yields and instantaneous reaction rates. Comparison of measured cross sections with calculations using CEM03.03, Bertini, and INCL+ABLA transportation codes of MCNP6 event generator; and with previous experimental data. Application to design of spallation-based radioisotope production for multiple radiotherapeutic pharmaceutical agents.

doi: 10.1103/PhysRevC.88.014604
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2047.


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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2013KR11      Phys.Rev. C 88, 034317 (2013)

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

Strength of the scissors mode in odd-mass Gd isotopes from the radiative capture of resonance neutrons

NUCLEAR REACTIONS 152,154,156,158Gd(n, γ), E<1 MeV white neutron spectrum; measured multistep cascade (MSC) γ spectra for different multiplicities and several resolved s-wave resonances using DANCE array at LANSCE, LANL facility; deduced E1 and M1 photon strength functions, level density. GEANT4-based simulations. Comparison with several model calculations of photon strength functions (PSF) and nuclear level densities (NLD) for deformed nuclei, and with experimental data from other reactions. Discussed scissors mode in odd-A Gd isotopes from summed reduced M1 strengths. Evidence of odd-even effect in strength of scissors mode.

doi: 10.1103/PhysRevC.88.034317
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2013RU05      Phys.Rev. C 87, 054603 (2013)

G.Rusev, M.Jandel, M.Krticka, T.A.Bredeweg, A.Couture, T.N.Taddeucci, J.L.Ullmann

γ-ray cascade transitions in 112Cd and 114Cd following resonance capture of epithermal neutrons

NUCLEAR REACTIONS 111,113Cd(n, γ), E=epithermal; measured E(n), I(n), TOF, Eγ, Iγ, γγ-coin, σ, multiplicity distribution using DANCE calorimeter at LANSCE facility. 112,114Cd; deduced levels, resonances, J, π, neutron, two-step γ cascades and radiative width of s-wave resonances, E1, M1 and E2 strength function. Comparison with statistical-model calculations using DICEBOX code, SLO and KMF models.

doi: 10.1103/PhysRevC.87.054603
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2013RU14      Phys.Rev. C 88, 057602 (2013)

G.Rusev, M.Jandel, M.Krticka, C.W.Arnold, T.A.Bredeweg, A.Couture, W.A.Moody, S.M.Mosby, J.L.Ullmann

Cascade γ rays following capture of thermal neutrons on 113Cd

NUCLEAR REACTIONS 113Cd(n, γ), E=0.178 eV; measured Eγ, Iγ, γγ-coin using DANCE array of BaF2 detectors at LANSCE-LANL facility; deduced multiplicity of γ cascades. DICEBOX analysis. GEANT4 simulations. Comparison with ENDF-6 evaluation.

doi: 10.1103/PhysRevC.88.057602
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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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2012BA07      Phys.Rev. C 85, 024622 (2012)

B.Baramsai, G.E.Mitchell, U.Agvaanluvsan, F.Becvar, T.A.Bredeweg, A.Chyzh, A.Couture, D.Dashdorj, R.C.Haight, M.Jandel, A.L.Keksis, M.Krticka, J.M.O'Donnell, R.S.Rundberg, J.L.Ullmann, D.J.Vieira, C.L.Walker

Neutron resonance parameters in 155Gd measured with the DANCE γ-ray calorimeter array

NUCLEAR REACTIONS 155Gd(n, γ), E=1.36-185 eV; measured neutron spectra by time-of-flight, E(n), I(n), Eγ, sum-energy spectra, average γ-ray multiplicity of s-wave resonances, cross sections using DANCE calorimeter at LANSC. 156Gd; deduced resonances, spins by various methods, resonance parameters, s-wave level density, normalized yields for J=1 and J=2 resonances, neutron and radiative width, Sammy fit of experimental cross sections. Comparison with previous studies, and ENDF/B-VII.0, JENDL-4.0, JEFF-3.1, ROSFOND-2010 libraries.

doi: 10.1103/PhysRevC.85.024622
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset14318. Data from this article have been entered in the XUNDL database. For more information, click here.


2012CO11      Phys.Rev. C 85, 054004 (2012)

A.H.Couture, T.B.Clegg, S.Tajima, C.R.Howell, B.Fallin, J.H.Esterline, A.S.Crowell, B.J.Crowe, D.M.Markoff, L.C.Cumberbatch, R.S.Pedroni, H.Witala

Cross-section measurements of 2H(n, np)n in symmetric star configurations

NUCLEAR REACTIONS 2H(n, np), E=16, 19 MeV; measured particle spectra, time-of-flight, np-coin, σ in space-star (SST) and coplanar star (CST) neutron-deuteron breakup configurations. Comparison with Monte Carlo simulations based on rigorous three-nucleon Faddeev calculations. Discussed discrepancies between data and theory; deficiencies in theoretical treatment of three-nucleon forces or in knowledge of the neutron-neutron 1S0 force.

doi: 10.1103/PhysRevC.85.054004
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset14337.


2012DE08      Phys.Rev. C 85, 045804 (2012)

R.J.de Boer, A.Couture, R.Detwiler, J.Gorres, P.Tischhauser, E.Uberseder, C.Ugalde, E.Stech, M.Wiescher, R.E.Azuma

Measurement of elastic 12C + α scattering: Above the proton separation energy

NUCLEAR REACTIONS 12C(α, α), E=2.6-8.2 MeV; measured Eα, Iα, σ(E, θ). 12C(α, α'), (α, p), E=6.6-8.2 MeV; analyzed σ(E, θ) data. 16O; deduced resonances, levels, J, π, α and proton widths. R-matrix analysis. Relevance to CNO cycle.

doi: 10.1103/PhysRevC.85.045804
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC1921. Data from this article have been entered in the XUNDL database. For more information, click here.


2012EN04      Nucl.Phys. A893, 87 (2012)

J.W.Engle, S.G.Mashnik, H.Bach, A.Couture, K.Jackman, R.Gritzo, B.D.Ballard, M.Fassbender, D.M.Smith, L.J.Bitteker, J.L.Ullmann, M.S.Gulley, C.Pillai, K.D.John, E.R.Birnbaum, F.M.Nortier

Cross sections from 800 MeV proton irradiation of terbium

NUCLEAR REACTIONS 159Tb(p, X), E=795.4 MeV; measured thick target activation Eγ, Iγ(t); deduced 7Be, 54Mn, 60Co, 113Sn, 129Cs, 128,131,133Ba, 139,141Ce, 143,144,146Pm, 145,153Sm, 145,146,147,148,149,150,155,156Eu, 146,149,151,153Gd, 151,152,153,155,156m2,158Tb production σ; calculated fragments σ using CEOM03.03, Bertini INC+MPM (multistage preequilibrium model)+EVAP, INCL+ABLA codes.

doi: 10.1016/j.nuclphysa.2012.08.001
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC1951.


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.


2012WE09      Appl.Radiat.Isot. 70, 2590 (2012)

J.W.Weidner, S.G.Mashnik, K.D.John, B.Ballard, E.R.Birnbaum, L.J.Bitteker, A.Couture, M.E.Fassbender, G.S.Goff, R.Gritzo, F.M.Hemez, W.Runde, J.L.Ullmann, L.E.Wolfsberg, F.M.Nortier

225Ac and 223Ra production via 800 MeV proton irradiation of natural thorium targets

NUCLEAR REACTIONS Th(p, X)225Ac/227Ac/223Ra/225Ra/227Th, E=800 MeV; measured reaction products, Eγ, Iγ, Eα, Iα; deduced production rate s, yields, cumulative σ. Comparison with theoretical calculations.

doi: 10.1016/j.apradiso.2012.07.003
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC1949.


2012WE10      Appl.Radiat.Isot. 70, 2602 (2012)

J.W.Weidner, S.G.Mashnik, K.D.John, F.Hemez, B.Ballard, H.Bach, E.R.Birnbaum, L.J.Bitteker, A.Couture, D.Dry, M.E.Fassbender, M.S.Gulley, K.R.Jackman, J.L.Ullmann, L.E.Wolfsberg, F.M.Nortier

Proton-induced cross sections relevant to production of 225Ac and 223Ra in natural thorium targets below 200 MeV

NUCLEAR REACTIONS Th(p, X)223Ra/225Ra/225Ac/227Th, E<200 MeV; measured reaction products, Eγ, Iγ; deduced cumulative σ, production rates, yields. Comparison with available data.

doi: 10.1016/j.apradiso.2012.07.006
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC1950.


2011BE47      Eur.Phys.J. A 47, 160 (2011)

F.Belloni, M.Calviani, N.Colonna, P.Mastinu, P.M.Milazzo, U.Abbondanno, G.Aerts, H.Alvarez, F.Alvarez-Velarde, S.Andriamonje, J.Andrzejewski, L.Audouin, G.Badurek, M.Barbagallo, P.Baumann, F.Becvar, E.Berthoumieux, F.Calvino, D.Cano-Ott, R.Capote, C.Carrapico, P.Cennini, V.Chepel, E.Chiaveri, G.Cortes, A.Couture, J.Cox, M.Dahlfors, S.David, I.Dillmann, C.Domingo-Pardo, W.Dridi, I.Duran, C.Eleftheriadis, M.Embid-Segura, A.Ferrari, R.Ferreira-Marques, K.Fujii, W.Furman, I.Goncalves, E.Gonzalez-Romero, A.Goverdovski, F.Gramegna, C.Guerrero, F.Gunsing, B.Haas, R.Haight, M.Heil, A.Herrera-Martinez, M.Igashira, E.Jericha, F.Kappeler, Y.Kadi, D.Karadimos, D.Karamanis, M.Kerveno, P.Koehler, E.Kossionides, M.Krticka, C.Lamboudis, H.Leeb, A.Lindote, I.Lopes, M.Lozano, S.Lukic, J.Marganiec, S.Marrone, T.Martinez, C.Massimi, M.H.Meaze, A.Mengoni, C.Moreau, M.Mosconi, F.Neves, H.Oberhummer, S.O'Brien, J.Pancin, C.Papachristodoulou, C.Papadopoulos, C.Paradela, N.Patronis, A.Pavlik, P.Pavlopoulos, L.Perrot, M.T.Pigni, R.Plag, A.Plompen, A.Plukis, A.Poch, J.Praena, C.Pretel, J.Quesada, T.Rauscher, R.Reifarth, M.Rosetti, C.Rubbia, G.Rudolf, P.Rullhusen, J.Salgado, C.Santos, L.Sarchiapone, I.Savvidis, C.Stephan, G.Tagliente, J.L.Tain, D.Tarrio, L.Tassan-Got, L.Tavora, R.Terlizzi, G.Vannini, P.Vaz, A.Ventura, D.Villamarin, M.C.Vincente, V.Vlachoudis, R.Vlastou, F.Voss, S.Walter, M.Wiescher, K.Wisshak

Measurement of the neutron-induced fission cross-section of 243Am relative to 235U from 0.5 to 20 MeV

NUCLEAR REACTIONS 235U, 243Am(n, F), E=0.5-20 MeV; measured fission products using n_TOF fast ionization chamber; deduced σ; calculated σ using EMPIRE code. Compared with other data, ENDF/B-VII.0, JENDL-4.0, JEFF-3.1.1, ROSFOND, BROND-2.2.

doi: 10.1140/epja/i2011-11160-x
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset23148.


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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2011MA82      J.Phys.:Conf.Ser. 312, 042014 (2011)

L.Martin, L.Buchmann, J.F.Carpino, A.Chen, A.Couture, B.Davids, J.Fallis, S.P.Fox, U.Hager, A.Hussein, A.M.Laird, K.Olchanski, D.Ottewell, C.Ruiz, G.Ruprecht, G.Sheffer, S.Sjue, O.Tengblad, F.Tovesson

NEURAL - a tracking detector for neutron-induced reactions of astrophysical importance

doi: 10.1088/1742-6596/312/4/042014
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2011TA17      Phys.Rev. C 84, 015801 (2011)

G.Tagliente, P.M.Milazzo, K.Fujii, U.Abbondanno, G.Aerts, H.Alvarez, F.Alvarez-Velarde, S.Andriamonje, J.Andrzejewski, L.Audouin, G.Badurek, P.Baumann, F.Becvar, F.Belloni, E.Berthoumieux, S.Bisterzo, F.Calvino, M.Calviani, D.Cano-Ott, R.Capote, C.Carrapico, P.Cennini, V.Chepel, E.Chiaveri, N.Colonna, G.Cortes, A.Couture, J.Cox, M.Dahlfors, S.David, I.Dillmann, C.Domingo-Pardo, W.Dridi, I.Duran, C.Eleftheriadis, M.Embid-Segura, A.Ferrari, R.Ferreira-Marques, W.Furman, R.Gallino, I.Goncalves, E.Gonzalez-Romero, F.Gramegna, C.Guerrero, F.Gunsing, B.Haas, R.Haight, M.Heil, A.Herrera-Martinez, E.Jericha, F.Kappeler, Y.Kadi, D.Karadimos, D.Karamanis, M.Kerveno, E.Kossionides, M.Krticka, C.Lamboudis, H.Leeb, A.Lindote, I.Lopes, M.Lozano, S.Lukic, J.Marganiec, S.Marrone, T.Martnez, C.Massimi, P.Mastinu, A.Mengoni, C.Moreau, M.Mosconi, F.Neves, H.Oberhummer, S.O'Brien, J.Pancin, C.Papachristodoulou, C.Papadopoulos, C.Paradela, N.Patronis, A.Pavlik, P.Pavlopoulos, L.Perrot, M.T.Pigni, R.Plag, A.Plompen, A.Plukis, A.Poch, J.Praena, C.Pretel, J.Quesada, T.Rauscher, R.Reifarth, M.Rosetti, C.Rubbia, G.Rudolf, P.Rullhusen, J.Salgado, C.Santos, L.Sarchiapone, I.Savvidis, C.Stephan, J.L.Tain, L.Tassan-Got, L.Tavora, R.Terlizzi, G.Vannini, P.Vaz, A.Ventura, D.Villamarin, M.C.Vincente, V.Vlachoudis, R.Vlastou, F.Voss, S.Walter, M.Wiescher, K.Wisshak

Neutron capture on 94Zr: Resonance parameters and Maxwellian-averaged cross sections

NUCLEAR REACTIONS 94Zr(n, γ), E=0.001-60 keV; measured E(n), I(n), capture yield using CERN n_TOF neutron source; deduced resonance parameters ER, gamma and neutron widths, capture kernels; calculated Maxwellian-averaged capture cross sections. 95Zr; deduced resonances, J, l-values, R-matrix analysis. Comparison with previous studies. Discussed astrophysical implications.

doi: 10.1103/PhysRevC.84.015801
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2011UL01      J.Korean Phys.Soc. 59, 1406s (2011)

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

Measurement of the 238U Neutron-capture Cross Section and Gamma-emission Spectra from 10 eV to 100 keV Using the DANCE Detector at LANSCE

NUCLEAR REACTIONS 238U(n, γ), E=10 eV-100 keV; measured Eγ, Iγ, γγ-coin using DANCE at LANSCE; deduced σ, γ multiplicity, 36 eV resonance σ(Eγ); calculated γ multiplicity, σ(Eγ) using DICEBOX code.

doi: 10.3938/jkps.59.1406
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2010DA18      Phys.Rev. C 82, 034002 (2010)

T.V.Daniels, C.W.Arnold, J.M.Cesaratto, T.B.Clegg, A.H.Couture, H.J.Karwowski, T.Katabuchi

Spin-correlation coefficients and phase-shift analysis for p+3He elastic scattering

NUCLEAR REACTIONS 3He(polarized p, p), E=2-6 MeV; measured Ep, Ip, analyzing powers; deduced phase shifts, spin-correlation coefficients using polarized 3He target. Comparison with theoretical calculations using realistic nucleon-nucleon potential models.

doi: 10.1103/PhysRevC.82.034002
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2010LA05      Phys.Rev. C 82, 015502 (2010)

C.M.Lavelle, C.-Y.Liu, W.Fox, G.Manus, P.M.McChesney, D.J.Salvat, Y.Shin, M.Makela, C.Morris, A.Saunders, A.Couture, A.R.Young

Ultracold-neutron production in a pulsed-neutron beam line

NUCLEAR REACTIONS 2H, 16O(n, n), E=ultracold; measured σ, γ-spectra, Bragg reflection spectra, low-temperature dependence on yield of ultracold neutrons. Liquid orthodeuterium and solid oxygen targets. Pulse-neutron incident beam.

doi: 10.1103/PhysRevC.82.015502
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2009LE23      Phys.Rev. C 80, 025805 (2009)

H.Y.Lee, M.Couder, A.Couture, S.Falahat, J.Gorres, L.Lamm, P.J.LeBlanc, S.O'Brien, A.Palumbo, E.Stech, E.Strandberg, W.Tan, C.Ugalde, M.Wiescher

Cross-section measurement of the 18F(α, p)21Ne reaction and possible implication for neutron production in explosive helium burning

NUCLEAR REACTIONS 21Ne(p, α)18F, E=2.3-4.0 MeV; measured Eγ, Iγ, decay curves, half-lives; deduced reaction yields and σ by R-matrix analysis. 18F(α, p)21Ne, E=0.5-2.1 MeV; deduced σ and reaction rates. Comparison with Hauser-Feshbach calculations. Discussed implications for astrophysical r-process and evolution of elemental abundances in supernovae.

doi: 10.1103/PhysRevC.80.025805
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2009TA09      Phys.Rev. C 79, 055805 (2009)

W.P.Tan, J.Gorres, M.Beard, M.Couder, A.Couture, S.Falahat, J.L.Fisker, L.Lamm, P.J.LeBlanc, H.Y.Lee, S.O'Brien, A.Palumbo, E.Stech, E.Strandberg, M.Wiescher

Measurement of the decay branching ratios of the α-unbound states in 19Ne and the 15O(α, γ) reaction rate

NUCLEAR REACTIONS 19F(3He, t), E=24 MeV; measured triton spectra, tα-coin, α(θ), α-decay branching ratios. 19Ne; deduced levels, J, π, α-unbound resonances. 15O(α, γ); deduced reaction rates versus temperature.

doi: 10.1103/PhysRevC.79.055805
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2009TI02      Phys.Rev. C 79, 055803 (2009)

P.Tischhauser, A.Couture, R.Detwiler, J.Gorres, C.Ugalde, E.Stech, M.Wiescher, M.Heil, F.Kappeler, R.E.Azuma, L.Buchmann

Measurement of elastic 12C+α scattering: Details of the experiment, analysis, and discussion of phase shifts

NUCLEAR REACTIONS 12C(α, α), E=2.6-8.2 MeV; measured Eα, Iα, σ(θ); deduced phase shifts using R-matrix analysis. 16O; deduced levels, resonances, α-widths. Application to 12C(α, γ)16O reaction of astrophysical interest.

doi: 10.1103/PhysRevC.79.055803
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2008CO03      Phys.Rev. C 77, 015802 (2008)

A.Couture, M.Beard, M.Couder, J.Gorres, L.Lamm, P.J.LeBlanc, H.Y.Lee, S.O'Brien, A.Palumbo, E.Stech, E.Strandberg, W.Tan, E.Uberseder, C.Ugalde, M.Wiescher, R.Azuma

Measurement of the 19F(p, γ)20Ne reaction and interference terms from Ec.m.=200-760 keV

NUCLEAR REACTIONS 19F(p, γ), E(cm)=200-700 keV; measured Eγ, Iγ, resonance parameters, interference signs. 20Ne, 16O, 19F; deduced levels, J, π.

doi: 10.1103/PhysRevC.77.015802
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2008DO05      J.Phys.(London) G35, 014020 (2008)

C.Domingo-Pardo, U.Abbondanno, G.Aerts, H.Alvarez, F.Alvarez-Velarde, S.Andriamonje, J.Andrzejewski, P.Assimakopoulos, L.Audouin, G.Badurek, P.Baumann, F.Becvar, E.Berthoumieux, S.Bisterzo, F.Calvino, M.Calviani, D.Cano-Ott, R.Capote, C.Carrapico, P.Cennini, V.Chepel, N.Colonna, G.Cortes, A.Couture, J.Cox, M.Dahlfors, S.David, I.Dillmann, W.Dridi, I.Duran, C.Eleftheriadis, M.Embid-Segura, L.Ferrant, A.Ferrari, R.Ferreira-Marques, K.Fujii, W.Furman, R.Gallino, I.Goncalves, E.Gonzalez-Romero, F.Gramegna, C.Guerrero, F.Gunsing, B.Haas, R.Haight, M.Heil, A.Herrera-Martinez, M.Igashira, E.Jericha, Y.Kadi, F.Kappeler, D.Karadimos, D.Karamanis, M.Kerveno, P.Koehler, E.Kossionides, M.Krticka, C.Lamboudis, H.Leeb, A.Lindote, I.Lopes, M.Lozano, S.Lukic, J.Marganiec, S.Marrone, C.Massimi, P.Mastinu, A.Mengoni, P.M.Milazzo, M.Mosconi, F.Neves, H.Oberhummer, S.O'Brien, J.Pancin, C.Papachristodoulou, C.Papadopoulos, C.Paradela, N.Patronis, A.Pavlik, P.Pavlopoulos, L.Perrot, M.T.Pigni, R.Plag, A.Plompen, A.Plukis, A.Poch, C.Pretel, J.Quesada, T.Rauscher, R.Reifarth, C.Rubbia, G.Rudolf, P.Rullhusen, J.Salgado, C.Santos, L.Sarchiapone, I.Savvidis, C.Stephan, G.Tagliente, J.L.Tain, L.Tassan-Got, L.Tavora, R.Terlizzi, G.Vannini, P.Vaz, A.Ventura, D.Villamarin, M.C.Vincente, V.Vlachoudis, R.Vlastou, F.Voss, S.Walter, M.Wiescher, K.Wisshak

The measurement of the 206Pb(n, γ) cross section and stellar implications

NUCLEAR REACTIONS 206Pb(n, γ), E=0.001-1000 keV; measured Eγ, Iγ, capture cross sections. Deduced maxwellian averaged sections.

doi: 10.1088/0954-3899/35/1/014020
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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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2008HE11      Phys.Rev. C 78, 025803 (2008)

M.Heil, R.Detwiler, R.E.Azuma, A.Couture, J.Daly, J.Goerres, F.Kappeler, R.Reifarth, P.Tischhauser, C.Ugalde, M.Wiescher

The 13C(α, n) reaction and its role as a neutron source for the s process

NUCLEAR REACTIONS 13C(α, n), E(cm)=320-700 keV; 13C(α, α), E=2.6-6.2 MeV; measured radii, σ, σ(θ), S-factor. 17O; deduced levels, J, π, resonance parameters.16O(n, n), (n, αγ); analyzed σ. R-matrix analysis.

doi: 10.1103/PhysRevC.78.025803
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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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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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2008ST11      Phys.Rev. C 77, 055801 (2008)

E.Strandberg, M.Beard, M.Couder, A.Couture, S.Falahat, J.Gorres, P.J.LeBlanc, H.Y.Lee, S.O'Brien, A.Palumbo, E.Stech, W.P.Tan, C.Ugalde, M.Wiescher, H.Costantini, K.Scheller, M.Pignatari, R.Azuma, L.Buchmann

24Mg(α, γ)28Si resonance parameters at low alpha-particle energies

NUCLEAR REACTIONS 24Mg(α, γ), E=1.0-1.5 MeV; measured Eγ, Iγ, γγ-coin, branching ratios, resonance strengths. 28Si; deduced levels, J, π, reaction rates. 13C, 17O, 21,22Ne, 25Mg(α, n); 16O, 20Ne(α, γ); 23Na, 24Mg, 27Al(p, γ); 23Na, 24Mg, 27Al, 28Si(n, γ); 25Al(γ, p); 27Al(p, α); analyzed reaction rates.

doi: 10.1103/PhysRevC.77.055801
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2008UG01      Phys.Rev. C 77, 035801 (2008)

C.Ugalde, R.E.Azuma, A.Couture, J.Gorres, H.Y.Lee, E.Stech, E.Strandberg, W.Tan, M.Wiescher

Thermonuclear rate for the 19F(α, p)22Ne reaction at stellar temperatures

NUCLEAR REACTIONS 19F(α, p), E=792-1993 keV; measured yield curves, σ, σ(θ), reaction rate at stellar temperatures; calculated low energy S-factor. R-matrix analysis.

doi: 10.1103/PhysRevC.77.035801
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2007CO19      At.Data Nucl.Data Tables 93, 807 (2007)

A.Couture, R.Reifarth

Direct measurements of neutron capture on radioactive isotopes

doi: 10.1016/j.adt.2007.06.003
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2005TA28      Phys.Rev. C 72, 041302 (2005)

W.P.Tan, J.Gorres, J.Daly, M.Couder, A.Couture, H.Y.Lee, E.Stech, E.Strandberg, C.Ugalde, M.Wiescher

Lifetime of the astrophysically important 4.03-MeV state in 19Ne

NUCLEAR REACTIONS 17O(3He, n), E=3.0 MeV; measured Eγ, Iγ, nγ-coin, DSA. 19Ne levels deduced energies, T1/2. Astrophysical implications discussed. Comparison with model predictions.

doi: 10.1103/PhysRevC.72.041302
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2005UG04      Nucl.Phys. A758, 577c (2005)

C.Ugalde, R.Azuma, A.Couture, J.Gorres, M.Heil, K.Scheller, E.Stech, W.Tan, M.Wiescher

The reaction rate for the destruction of fluorine in AGB stars

NUCLEAR REACTIONS 19F(α, p), E=1238-2009 keV; measured yields; deduced astrophysical reaction rates.

doi: 10.1016/j.nuclphysa.2005.05.106
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2004RA29      Phys.Rev. C 70, 065803 (2004)

U.Ratzel, C.Arlandini, F.Kappeler, A.Couture, M.Wiescher, R.Reifarth, R.Gallino, A.Mengoni, C.Travaglio

Nucleosynthesis at the termination point of the s process

NUCLEAR REACTIONS 208Pb, 209Bi(n, γ), E=spectrum; measured σ. Astrophysical implications discussed. Activation technique.

doi: 10.1103/PhysRevC.70.065803
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2003GO21      Nucl.Phys. A718, 155c (2003)

J.Gorres, S.Dababneh, A.Couture, M.Heil, F.Kappeler, H.Leiste, M.Lugaro, C.Ugalde, M.Wiescher

Nucleosynthesis in TP-AGB Stars and the Production of 19F

NUCLEAR REACTIONS 18O(α, γ), E ≈ 470, 566 MeV; measured Eγ, Iγ, γγ-coin; deduced resonance strengths, reaction rate. Implications for 19F nucleosynthesis discussed.

doi: 10.1016/S0375-9474(03)00707-3
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2001HE22      Nucl.Phys. A688, 499c (2001)

M.Heil, A.Couture, J.Daly, R.Detwiler, J.Gorres, G.Hale, F.Kappeler, R.Reifarth, U.Giesen, E.Stech, P.Tischhauser, C.Ugalde, M.Wiescher

A Measurement of the 13C(α, α) Differential Cross Section and Its Application to the 13C(α, n) Reaction

NUCLEAR REACTIONS 13C(α, α), E=2.6-6.2 MeV; measured σ(θ). 13C(α, n), E=0-2 MeV; calculated σ, S-factor following r-matrix analysis of elastic scattering data. Comparison with earlier results for s-process conditions.

doi: 10.1016/S0375-9474(01)00768-0
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