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NSR database version of April 26, 2024.

Search: Author = A.M.Lewis

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2023BA07      Ann.Nucl.Energy 188, 109751 (2023)

D.P.Barry, A.M.Lewis, L.Leal, J.M.Brown

A new ¹⁰³Rh Unresolved Resonance Region evaluation

NUCLEAR REACTIONS ¹⁰³Rh(n, X), E=8-40.146 keV; analyzed available data; deduced Unresolved Resonance Region (URR) σ, average neutron strength function, average spacing, average radiative width, average reduced neutron width, reduced neutron width, resonance parameters using SAMMY fitting.

doi: 10.1016/j.anucene.2023.109751
Citations: PlumX Metrics

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
Citations: PlumX Metrics

2023LE13      Eur.Phys.J. N 9, 34 (2023)

A.M.Lewis, A.D.Carlson, D.L.Smith, D.P.Barry, R.C.Block, S.Croft, Y.Danon, M.Drosg, M.W.Herman, D.Neudecker, N.Otuka, H .Sjostrand, V.Sobes

Templates of expected measurement uncertainties for total neutron cross-section observables

doi: 10.1051/epjn/2023018
Citations: PlumX Metrics

2023LE14      Eur.Phys.J. N 9, 33 (2023)

A.M.Lewis, D.Neudecker, A.D.Carlson, D.L.Smith, I.Thompson, A.Wallner, D.P.Barry, L.A.Bernstein, R.C.Block, S.Croft, Y.Danon, M.Drosg, R.C.Haight, M.W.Herman, H.Y.Lee, N.Otuka, H.Sjostrand, V.Sobes

Templates of expected measurement uncertainties for neutron-induced capture and charged-particle production cross section observables

doi: 10.1051/epjn/2023015
Citations: PlumX Metrics

2023NE10      Eur.Phys.J. N 9, 35 (2023)

D.Neudecker, A.M.Lewis, E.F.Matthews, J.Vanhoy, R.C.Haight, D.L.Smith, P.Talou, S.Croft, A.D.Carlson, B.Pierson, A.Wallner, A.Al-Adili, L.Bernstein, R.Capote, M.Devlin, M.Drosg, D.L.Duke, S.Finch, M.W.Herman, K.J.Kelly, A.Koning, A.E.Lovell, P.Marini, K.Montoya, G.P.A.Nobre, M.Paris, B.Pritychenko, H.Sjostrand, L.Snyder, V.Sobes, A.Solders, J.Taieb

Templates of Expected Measurement Uncertainties: a CSEWG Effort

NUCLEAR REACTIONS ²³⁵U(n, F), E<20 MeV; analyzed available data; deduced nubar mean values and uncertainties.

doi: 10.1051/epjn/2023014
Citations: PlumX Metrics

2021FO05      Phys.Rev. C 103, 034601 (2021)

M.B.Fox, A.S.Voyles, J.T.Morrell, L.A.Bernstein, A.M.Lewis, A.J.Koning, J.C.Batchelder, E.R.Birnbaum, C.S.Cutler, D.G.Medvedev, F.M.Nortier, E.M.O'Brien, C.Vermeulen

Investigating high-energy proton-induced reactions on spherical nuclei: Implications for the preequilibrium exciton model

NUCLEAR REACTIONS ⁹³Nb(p, X)⁷²Se/⁷³As/⁷⁴As/⁷⁵Se/⁸¹Rb/^82mRb/⁸³Rb/⁸³Sr/⁸⁴Rb/^85mY/⁸⁶Rb/⁸⁶Y/⁸⁶Zr/⁸⁷Y/^87mY/⁸⁸Y/⁸⁸Zr/⁸⁹Zr/⁹⁰Nb/⁹⁰Mo/^91mNb/^92mNb/^93mNb, E=192.38, 177.11, 163.31, 148.66, 133.87, 119.8, 104.2, 91.21, 79.32, 72.52, 67.14, 63.06, 60.08, 57.47, 55.58, 53.62, 51.61 MeV; ⁹³Nb(p, 4n)⁹⁰Mo, (p, 3np)⁹⁰Nb, (p, nα)⁸⁹Zr, (p, 3n2p)⁸⁹Zr, (p, 3npα)⁸⁶Y, (p, 2α)⁸⁸Zr, (p, n)^93mMo, (p, np)^92mNb, (p, 3nα)⁸⁷Zr, (p, npα)⁸⁸Y, (p, 4nα)⁸⁶Zr, (p, 4np)⁸⁹Nb, (p, 2npα)⁸⁷Y, (p, np2α)⁸⁴Rb, E=25-200 MeV; ¹³⁹La(p, 5n)¹³⁵Ce, (p, 6n)¹³⁴Ce, (p, 4np)¹³⁵La, (p, 7n)^133mCe, (p, 3nα)¹³³Ba/^133mBa, (p, 3n)¹³⁷Ce/^137mCe, (p, n)¹³⁹Ce, (p, 8n)¹³²Ce, (p, 6np)¹³³La, (p, 3npα)¹³²Cs, (p, 5nα)¹³¹Ba, E=20-100 MeV; measured Eγ, Iγ, σ(E) by activation method in a Tri-lab collaboration among the Lawrence Berkeley, Los Alamos, and Brookhaven National Laboratories. Comparison with literature data, and with calculations of the nuclear model codes: TALYS, CoH, EMPIRE, and ALICE; deduced best parametrization for the preequilibrium two-component exciton model.

doi: 10.1103/PhysRevC.103.034601
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2631.

2021FO13      Phys.Rev. C 104, 064615 (2021)

M.B.Fox, A.S.Voyles, J.T.Morrell, L.A.Bernstein, J.C.Batchelder, E.R.Birnbaum, C.S.Cutler, A.J.Koning, A.M.Lewis, D.G.Medvedev, F.M.Nortier, E.M.O'Brien, Ch.Vermeulen

Measurement and modeling of proton-induced reactions on arsenic from 35 to 200 MeV

NUCLEAR REACTIONS ⁷⁵As(p, X)⁵⁶Co/⁵⁷Co/⁵⁸Co/⁶⁰Co/⁶⁵Zn/^69mZn/⁶⁶Ga/⁶⁷Ga/⁶⁸Ga/⁷²Ga/⁶⁶Ge/⁶⁸Ge/⁶⁹Ge/⁷⁰As/⁷¹As/⁷²As/⁷³As/⁷⁴As/⁷²Se/⁷³Se/⁷⁵Se, E=35-200 MeV; Cu(p, X)^44mSc/⁴⁶Sc/⁴⁷Sc/⁴⁸V/⁴⁸Cr/⁴⁹Cr/⁵¹Cr/⁵²Mn/⁵⁴Mn/⁵⁶Mn/⁵⁵Co/⁵⁶Co/⁵⁷Co/⁶⁰Co/⁵⁶Ni/⁵⁷Ni/⁵⁹Fe/⁶⁰Cu/⁶¹Cu/⁶⁴Cu/⁶²Zn/⁶³Zn/⁶⁵Zn, E=35-200 MeV; Ti(p, X)⁴²K/⁴³K/⁴³Sc/⁴⁴Sc/^44mSc/⁴⁶Sc/⁴⁷Sc/⁴⁸Sc/⁴⁴Ti/⁴⁷Ca/⁴⁸V, E=35-200 MeV; measured production σ(E) using stacked-target technique, and off-line γ-ray spectrometry, Eγ, Iγ at the LBNL 88-Inch Cyclotron for E(p)<55 MeV, at LANL, IPF for E(p)=50-100 MeV, and at BNL, BLIP for E(p)=100-200 MeV. ⁷⁵As(p, 4n)⁷²Se, (p, 3n)⁷³Se, (p, 3np)⁷²As, (p, X)⁵⁶Co/⁵⁷Co/⁵⁸Co/⁶⁰Co/⁶⁵Zn/^69mZn/⁶⁶Ga/⁶⁷Ga/⁶⁸Ga/⁷²Ga/⁶⁶Ge/⁶⁸Ge/⁶⁹Ge/⁷⁰As/⁷¹As/⁷³As/⁷⁴As/⁷⁵Se, E=25-200 MeV; Ti(p, X)⁴⁴Sc/^44mSc, E=10-200 MeV; Ti(p, X)⁴²K/⁴³K/⁴³Sc/⁴⁴Sc/^44mSc/⁴⁶Sc/⁴⁷Sc/⁴⁸Sc/⁴⁷Ca/⁴⁴Ti/⁴⁸V, E=25-200 MeV; Cu(p, X)^44mSc/⁴⁶Sc/⁴⁷Sc/⁴⁸V/⁴⁸Cr/⁴⁹Cr/⁵¹Cr/⁵²Mn/⁵⁴Mn/⁵⁶Mn/⁵⁵Co/⁵⁶Co/⁵⁷Co/⁶⁰Co/⁵⁶Ni/⁵⁷Ni/⁵⁹Fe/⁶⁰Cu/⁶¹Cu/⁶⁴Cu/⁶²Zn/⁶³Zn/⁶⁵Zn, E=25-200 MeV; comparison of measured s(E) in the present work and previous experiments with theoretical cross sections using ALICE-20, CoH-3.5.3, EMPIRE-3.2.3, TALYS-1.95 and TENDL-2019. ⁷⁵As(p, n)⁷⁵Se, (p, np)⁷⁴As, E<200 MeV; ⁷⁵As(p, 3n)⁷³Se, (p, 2np)⁷³As, (p, 4n)⁷²Se, (p, X)⁷¹As/⁶⁹Ge/⁶⁸Ga/⁶⁷Ga, E=25-200; TALYS default and adjusted σ(E) calculations for residual products. ⁷⁵As(p, 3np)⁷²As, (p, X)⁷²Ga/⁷⁰As/⁶⁵Zn/^69mZn/⁶⁸Ge/⁶⁶Ge/⁶⁶Ga/⁵⁶Co/⁵⁷Co/⁵⁸Co/⁶⁰Co, E=25-200 MeV; TALYS default and adjusted calculations extended to residual products not used in the parameter adjustment sensitivity studies. ^68,71,73As, ^72,73Se, ⁶⁹Ge, ^67,69Ga; adjusted level density scalings in global fitting procedure for residual products. Relevance to production cross sections for positron emission tomography (PET) generator system of ⁷²Se/⁷²As and ⁶⁸Ge/⁶⁸Ga.

doi: 10.1103/PhysRevC.104.064615
Citations: PlumX Metrics
Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2702.

2021HU05      Nucl.Instrum.Methods Phys.Res. A995, 165095 (2021)

A.M.Hurst, L.A.Bernstein, T.Kawano, A.M.Lewis, K.Song

The Baghdad Atlas: A relational database of inelastic neutron-scattering (n, n'γ) data

NUCLEAR REACTIONS ⁵⁶Fe(n, n'γ), (n, p), B, ¹¹⁰Pd(n, n'γ), E<15 MeV; analyzed available data from Baghdad reactor; deduced σ and uncertainties. Comparison with COH₃ calculations, ENDF/B-VIII.0 and EXFOR libraries.

doi: 10.1016/j.nima.2021.165095
Citations: PlumX Metrics
Data from this article have been entered in the EXFOR database. For more information, access X4 dataset14521.

2021VO05      Eur.Phys.J. A 57, 94 (2021); Erratum Eur.Phys.J. A 57, 131 (2021)

A.S.Voyles, A.M.Lewis, J.T.Morrell, M.S.Basunia, L.A.Bernstein, J.W.Engle, S.A.Graves, E.F.Matthews

Proton-induced reactions on Fe, Cu, and Ti from threshold to 55 MeV

NUCLEAR REACTIONS Fe(p, X)⁴⁸Cr/⁴⁸V/⁴⁹Cr/⁵¹Mn/⁵¹Cr/⁵²Fe/⁵²Mn/⁵⁴Mn/⁵⁵Co/⁵⁶Mn/⁵⁶Co/⁵⁷Co/⁵⁸Co, Cu(p, X)⁵⁴Mn/⁵⁷Ni/⁵⁷Cu/⁶⁰Co/⁶⁰Cu/⁶¹Co/⁶¹Cu, Ti(p, X)⁴³K/⁴⁴Sc/⁴⁷Sc/⁴⁸Sc, E=4-55 MeV; measured reaction products, Eγ, Iγ; deduced independent and cumulative σ. Comparison with EMPIRE, CoH, and ALICE nuclear model code calculations.

doi: 10.1140/epja/s10050-021-00401-2
Citations: PlumX Metrics

2019BA16      Phys.Rev. C 99, 044612 (2019)

J.C.Batchelder, S.-A.Chong, J.Morrell, M.A.Unzueta, P.Adams, J.D.Bauer, T.Bailey, T.A.Becker, L.A.Bernstein, M.Fratoni, A.M.Hurst, J.James, A.M.Lewis, E.F.Matthews, M.Negus, D.Rutte, K.Song, K.Van Bibber, M.Wallace, C.S.Waltz

Possible evidence of nonstatistical properties in the ³⁵Cl (n, p) ³⁵S cross section

NUCLEAR REACTIONS ³⁵Cl(n, p)³⁵S, ³⁵Cl(n, α)³²P, E=2.74, 2.64, 2.58, 2.52, 2.42 MeV; measured β radiation and decay curves from the decay of ³⁵S and ³²P, and σ(E) using liquid scintillator counter at the Berkeley High Flux Neutron Generator (BHFNG) at the University of California. ⁵⁸Ni(n, p)⁵⁸Co and ¹¹⁵In(n, n')^115mIn used as references. Comparison with data in evaluated libraries: ENDF/B-VIII.0, ENDF/B-VII.1, JEFF-3.2, JENDL-4.0, and ROSFOND-2010. ³⁶Cl; deduced resonance, σ(E). ³⁵Cl(n, p), E=1 eV-15 MeV; ³⁵Cl(n, α), E=0-20 MeV; comparison of literature and present experimental σ(E) with nuclear data libraries; concluded that modeling of (n, X) cross sections for N=Z=20 shell gap nuclei requires a resolved resonance approach rather than a Hauser-Feshbach formalism.

doi: 10.1103/PhysRevC.99.044612
Citations: PlumX Metrics
Data from this article have been entered in the EXFOR database. For more information, access X4 dataset14556.

2019LE12      Eur.Phys.J. A 55, 141 (2019)

A.M.Lewis, L.A.Bernstein, T.Kawano, D.Neudecker

Ratio method for estimating uncertainty in calculated gamma cascades

doi: 10.1140/epja/i2019-12826-y
Citations: PlumX Metrics

2018VO05      Nucl.Instrum.Methods Phys.Res. B429, 53 (2018)

A.S.Voyles, L.A.Bernstein, E.R.Birnbaum, J.W.Engle, S.A.Graves, T.Kawano, A.M.Lewis, F.M.Nortier

Excitation functions for (p, x) reactions of niobium in the energy range of Ep=40-90 MeV

NUCLEAR REACTIONS Nb(p, X)⁸²Rb/⁸³Sr/⁸⁵Y/⁸⁶Zr/⁸⁶Y/⁸⁷Zr/⁸⁷Y/⁸⁸Zr/⁸⁸Y/⁸⁹Nb/⁸⁹Zr/⁹⁰Mo/⁹⁰Nb/⁹¹Nb/⁹²Nb/⁹³Mo, Cu(p, X)⁵¹Cr/⁵²Mn/⁵⁴Mn/⁵⁵Co/⁵⁶Ni/⁵⁷Ni/⁵⁷Co/⁵⁸Co/⁵⁹Fe/⁶⁰Co/⁶¹Cu/⁶⁴Cu, E<100 MeV; measured reaction products, Eγ, Iγ; deduced σ and uncertainties, isomer-to-ground-state branching ratios. Comparison with the experimental data, reaction modeling codes EMPIRE, TALYS, and CoH.

doi: 10.1016/j.nimb.2018.05.028
Citations: PlumX Metrics
Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2327.