NSR Query Results
Output year order : Descending NSR database version of April 25, 2024. Search: Author = H.Y.Lee Found 55 matches. 2024LE02 Phys.Rev. C 109, 014601 (2024) H.Y.Lee, S.A.Kuvin, L.Zavorka, S.Mosby, B.DiGiovine, G.Hale, M.Paris, D.Votaw, M.White Differential cross sections of the 16O(n, α) reaction at neutron energies from 3.8 to 15 MeV
doi: 10.1103/PhysRevC.109.014601
2023DE34 Nucl.Instrum.Methods Phys.Res. A1055, 168472 (2023) S.Dede, S.D.Essenmacher, P.Gastis, K.V.Manukyan, S.A.Kuvin, H.Y.Lee, J.M.Roach, P.C.Burns, A.Aprahamian Electrospraying deposition and characterization of potassium chloride targets for nuclear science measurements NUCLEAR REACTIONS 35Cl, 39K(n, p), E=3-3.5 MeV; measured reaction products, Ep, Ip; deduced Q-values, ratio of partial σ. A white neutron beam at the Los Alamos Neutron Science Center (LANSCE) facility.
doi: 10.1016/j.nima.2023.168472
2023KE09 Phys.Rev. C 108, 024603 (2023) K.J.Kelly, M.Devlin, J.M.O'Donnell, D.Neudecker, A.E.Lovell, R.C.Haight, C.Y.Wu, R.Henderson, E.A.Bennett, T.Kawano, J.L.Ullmann, N.Fotiades, J.Henderson, S.M.Mosby, T.N.Taddeucci, P.Talou, M.C.White, J.A.Gomez, H.Y.Lee Measurement of the 238U(n, f) prompt fission neutron spectrum from 10 keV to 10 MeV induced by neutrons with 1.5-20 MeV energy NUCLEAR REACTIONS 238U(n, F), E=1.5-20 MeV; measured fission fragments, En, In, neutron time-of-flight, (fragment)n-coin; deduced prompt fission neutron spectrum (PFNS). Systematic trends in PFNS and PFNS ratios for 239Pu, 235U, and 238U obtained in series of Chi-Nu experiments. Comparison to other experimental results, CGMF calculations and data from JEFF-3.3, JENDL-5.0. ENDF/B-VIII libraries. Pulsed white neutron source at Weapons Neutron Research (WNR) facility of the Los Alamos Neutron Science Center (LANSCE). Li-glass array consisting of 22 detectors and liquid scintillator array consisting of 54 detector used for neutron detection, while PPAC used for detecting fission fragments in the frame of Chi-Nu experiment.
doi: 10.1103/PhysRevC.108.024603
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
2023TS02 Nucl.Instrum.Methods Phys.Res. A1046, 167666 (2023) P.Tsintari, G.Perdikakis, H.Y.Lee, S.A.Kuvin, A.Georgiadou, H.I.Kim, D.Votaw, L.Zavorka Implementation and validation of realistic (n, x) reaction yields in Geant4 utilizing a detailed evaluated nuclear reaction library below 20 MeV NUCLEAR REACTIONS 1H(n, n), 12C, 16O, 63Cu, 58Ni(n, α), 14N, 58Ni, 63Cu, 27Al(n, p), E<20 MeV; measured reaction products, En, In; deduced σ, yields. Comparison with Geant4 simulations. The Low Energy Neutron-induced charged-particle (Z) chamber (LENZ), at LANSCE.
doi: 10.1016/j.nima.2022.167666
2022KE01 Phys.Rev. C 105, 044615 (2022) K.J.Kelly, J.A.Gomez, M.Devlin, J.M.O'Donnell, D.Neudecker, A.E.Lovell, R.C.Haight, C.Y.Wu, R.Henderson, T.Kawano, E.A.Bennett, S.M.Mosby, J.L.Ullmann, N.Fotiades, J.Henderson, T.N.Taddeucci, H.Y.Lee, P.Talou, M.C.White Measurement of the 235U(n, f) prompt fission neutron spectrum from 10 keV to 10 MeV induced by neutrons of energy from 1 MeV to 20 MeV NUCLEAR REACTIONS 235U(n, F), E=0.01-10 MeV; measured In, En, neutron time-of-flight, fission fragments, neutrons angular distributions, (fragment)n-coin; deduced prompt fission neutron spectrum (PFNS), components corresponding to first-, second-, and third-chance fission as well as pre-equilibrium neutron emission preceding fission, mean PFNS energy, ratio to PFNMS obtained in 239Pu(n, F) reaction. Experiment performed as a part of Chi-Nu project aimed to measure the PFNS of major actinides with the Weapons Neutron Research (WNR) facility at the Los Alamos Neutron Science Center (LANSCE). The results are compared with other experimental data, CGMF calculations and selected nuclear data evaluations - ENDF/B-VIII.0, JEFF-3.3, JENDL-5.0.
doi: 10.1103/PhysRevC.105.044615
2022KU12 Phys.Rev. C 105, 044608 (2022) S.A.Kuvin, H.Y.Lee, B.DiGiovine, C.Eiroa-Lledo, A.Georgiadou, M.Herman, T.Kawano, V.Mocko, S.Mosby, C.Vermeulen, D.Votaw, M.White, L.Zavorka, G.Perdikakis, P.Tsintari, H.I.Kim Direct measurement of 59Ni(n, p) 59Co and 59Ni(n, α)56Fe at fast-neutron energies from 500 keV to 10 MeV NUCLEAR REACTIONS 59Ni(n, p), (n, α), E=0.5-10 MeV; measured Ep, Ip, Eα, Iα, neutron time of flight, np-coin, nα-coin; deduced Q, inclusive and exclusive σ(E). Comparison to statistical Hauser-Feschbach calculations (TALYS, CoH3), evaluated data (ENDF/B-VIII.0, JEFF-3.3, JENDL-4.0) and other experimental results. Low Energy (n, z) (LENZ) setup consisting of annular double-sided silicon strip detectors at the WNR facility at the Los Alamos Neutron Science Center (LANSCE).
doi: 10.1103/PhysRevC.105.044608
2021KU19 Phys.Rev. C 104, 014603 (2021) S.A.Kuvin, H.Y.Lee, B.DiGiovine, A.Georgiadou, S.Mosby, D.Votaw, M.White, L.Zavorka Validation of neutron-induced reactions on natural carbon using an active target at neutron energies up to 22 MeV at LANSCE NUCLEAR REACTIONS 12C(n, α)9Be, (n, p), (n, pd), 13C(n, α)10Be, E=6-22 MeV; measured reaction products, relative σ(E) using natural carbon target and LENZ annular silicon detectors with the flux monitor ionization chamber at Weapons Neutron Research (WNR) facility at the Los Alamos Neutron Science Center (LANSCE). Comparison with GEANT4 simulations using the ENDF/B-VIII.0 evaluated nuclear data library up to E(n)=20 MeV, and with previous experimental data.
doi: 10.1103/PhysRevC.104.014603
2020CH50 Eur.Phys.J. A 56, 297 (2020) A.Chemey, A.Pica, L.Yao, W.Loveland, H.Y.Lee, S.A.Kuvin Total kinetic energy and mass yields from the fast neutron-induced fission of 239Pu NUCLEAR REACTIONS 239Pu(n, F), E=2.4-100 MeV; measured reaction products; deduced fission fragment mass distributions, mass yields, total kinetic energy (TKE) release in fission. Comparison with available data. The Los Alamos National Lab (LANL) WNR facility, on Flight Path 15R (FP15R).
doi: 10.1140/epja/s10050-020-00295-6
2020KE05 Phys.Rev. C 102, 034615 (2020) K.J.Kelly, M.Devlin, J.M.O'Donnell, J.A.Gomez, D.Neudecker, R.C.Haight, T.N.Taddeucci, S.M.Mosby, H.Y.Lee, C.Y.Wu, R.Henderson, P.Talou, T.Kawano, A.E.Lovell, M.C.White, J.L.Ullmann, N.Fotiades, J.Henderson, M.Q.Buckner Measurement of the 239Pu(n, f) prompt fission neutron spectrum from 10 keV to 10 MeV induced by neutrons of energy 1-20 MeV NUCLEAR REACTIONS 239Pu(n, F), E=1-20 MeV; measured outgoing prompt fission neutron spectrum (PFNS) in the range of E(n)=0.01-10 MeV, I(n) using Li-glass detector array and 54-detector EJ-309 liquid scintillator array in Chi-Nu experiment at the WNR-LANSCE-Los Alamos facility; deduced correlation matrix for PFNS from the Li-glass and the liquid scintillator. Comparison of present PFNS results with previous experimental results, and with evaluated data in ENDF/B-VIII.0 and JEFF-3.3 libraries.
doi: 10.1103/PhysRevC.102.034615
2020KI03 Nucl.Instrum.Methods Phys.Res. A963, 163699(2020) H.I.Kim, H.Y.Lee, T.Kawano, A.Georgiadou, S.A.Kuvin, L.Zavorka, M.W.Herman New evaluation on angular distributions and energy spectra for neutron-induced charged-particle measurements
doi: 10.1016/j.nima.2020.163699
2020KU17 Phys.Rev. C 102, 024623 (2020) S.A.Kuvin, H.Y.Lee, T.Kawano, B.DiGiovine, A.Georgiadou, C.Vermeulen, M.White, L.Zavorka, H.I.Kim Nonstatistical fluctuations in the 35Cl(n, p)35S reaction cross section at fast-neutron energies from 0.6 to 6 MeV NUCLEAR REACTIONS 35Cl(n, p), (n, α), E=0.6-6 MeV spallation neutrons; measured charged particles from (n, p) and (n, α) reactions using the low energy LENZ experimental setup, flight path length using a sCVD diamond detector by measuring the neutron time of flight at the WNR facility of the Los Alamos Neutron Science Center (LANSCE); deduced Q value of the reaction from detected charged particle energy of the outgoing proton or α particle, and the corresponding neutron time-of-flight, σ(θ, E) for different reaction channels, angle-integrated partial cross section data for (n, p) and (n, α) channels. Comparison with statistical model HF calculation using the COH3 code, and Koning-Delaroche spherical optical potential and Kunieda coupled channel potential, and with evaluated cross section data in ENDF/B-VIII.0. 63Cu, 64Zn(n, p), (n, α), E=0.6-6 MeV; measured charged particles, σ(E) from the brass backing for background contributions, and to validate MCNP simulations using data from the present experiment, ENDF/B-VIII.0 evaluations, and from previous experiments.
doi: 10.1103/PhysRevC.102.024623
2020PI16 Phys.Rev. C 102, 064612 (2020) A.Pica, A.T.Chemey, L.Yao, W.Loveland, H.Y.Lee, S.A.Kuvin Total kinetic energy release in the fast-neutron-induced fission of 237Np NUCLEAR REACTIONS 237Np(n, F), E=2.6-100 MeV; measured fission fragments, time of flight of each interacting neutron using two arrays of nine Si PIN photodiodes at the LANSCE-WNR facility; deduced mass yield distributions, post- and pre-neutron emission total kinetic energy (TKEs), σ(E), product mass TKE distributions as function of neutron energy, dependence of asymmetric TKE events on neutron energy. Comparison with predictions of GEF (GEneral description of Fission observables) model.
doi: 10.1103/PhysRevC.102.064612
2020PR10 Phys.Rev. C 102, 034601 (2020) C.D.Pruitt, R.J.Charity, L.G.Sobotka, J.M.Elson, D.E.M.Hoff, K.W.Brown, M.C.Atkinson, W.H.Dickhoff, H.Y.Lee, M.Devlin, N.Fotiades, S.Mosby Isotopically resolved neutron total cross sections at intermediate energies NUCLEAR REACTIONS 16,18O, 58,64Ni, 103Rh, 112,124Sn(n, X), E=3-450 MeV; measured E(n), I(n), σ(E) by time-of-flight using wave-form-digitizer technology and BC-400 fast plastic scintillators at the WNR facility of the Los Alamos Neutron Science Center; deduced spectroscopic factors for valence proton and neutron levels through a dispersive optical model (DOM) analyses of σ(θ) data. 16,18O, 58,64Ni, 103Rh, 112,124Sn(p, p), (polarized p, p), (n, n), E=10-200 MeV; analyzed experimental σ(E), σ(θ, E), Ay(θ, E) data in literature; deduced dispersive optical model (DOM) parameters, charge radii and binding energies. Comparison with previous experimental measurements of σ(E) using analog methods.
doi: 10.1103/PhysRevC.102.034601
2019KE04 Phys.Rev.Lett. 122, 072503 (2019) K.J.Kelly, T.Kawano, J.M.O'Donnell, J.A.Gomez, M.Devlin, D.Neudecker, P.Talou, A.E.Lovell, M.C.White, R.C.Haight, T.N.Taddeucci, S.M.Mosby, H.Y.Lee, C.Y.Wu, R.Henderson, J.Henderson, M.Q.Buckner Preequilibrium Asymmetries in the 239Pu(n, f) Prompt Fission Neutron Spectrum NUCLEAR REACTIONS 239Pu(n, F), E=15-17.5 MeV; measured reaction products, En, In; deduced neutron excess of the preequilibrium prefission distribution above the postfission neutron spectrum. Comparison with theoretical calculations.
doi: 10.1103/PhysRevLett.122.072503
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
2018DE08 Nucl.Data Sheets 148, 322 (2018) M.Devlin, J.A.Gomez, K.J.Kelly, R.C.Haight, J.M.O'Donnell, T.N.Taddeucci, H.Y.Lee, S.M.Mosby, B.A.Perdue, N.Fotiades, J.L.Ullmann, C.Y.Wu, B.Bucher, M.Q.Buckner, R.A.Henderson, D.Neudecker, M.C.White, P.Talou, M.E.Rising, C.J.Solomon The Prompt Fission Neutron Spectrum of 235U(n, f) below 2.5 MeV for Incident Neutrons from 0.7 to 20 MeV NUCLEAR REACTIONS 235U(n, F), E=0.7-20 MeV; measured reaction products, En, In, TOF; deduced prompt fission neutron spectrum, σ(E).
doi: 10.1016/j.nds.2018.02.008
2018YA05 Nucl.Phys. A970, 65 (2018) R.Yanez, J.King, J.S.Barrett, W.Loveland, N.Fotiades, H.Y.Lee Total kinetic energy release in the fast neutron induced fission of 235U NUCLEAR REACTIONS 235U(n, F), E=2-100 MeV; measured En, In, fission products; deduced (post neutron emission) TKE. Fusion σ calculated within semi-empirical GEF model.
doi: 10.1016/j.nuclphysa.2017.11.007
2017CL01 Phys.Rev. C 95, 064612 (2017) S.D.Clarke, B.M.Wieger, A.Enqvist, R.Vogt, J.Randrup, R.C.Haight, H.Y.Lee, B.A.Perdue, E.Kwan, C.Y.Wu, R.A.Henderson, S.A.Pozzi Measurement of the energy and multiplicity distributions of neutrons from the photofission of 235U NUCLEAR REACTIONS 235U(γ, F), E<800 MeV white photon source; measured E(n), I(n), neutron time-of-flight spectrum, prompt fission neutron spectrum, neutron multiplicity distribution, average energy of correlated photofission neutron pairs as function of the angle between detectors at the WNR-15L beam line at LANSCE-LANL. Comparison with simulations using FREYA and MCNPX-POLIMI codes.
doi: 10.1103/PhysRevC.95.064612
2017KI14 Eur.Phys.J. A 53, 238 (2017) J.King, R.Yanez, W.Loveland, J.S.Barrett, B.Oscar, N.Fotiades, F.Tovesson, H.Y.Lee The total kinetic energy release in the fast neutron-induced fission of 232Th NUCLEAR REACTIONS 232Th(n, F), E=3-91 MeV; measured post-emission TKE release; calculated compound nucleus E* vs En, neutron multiplicity; deduced fragment mass distribution, average excitation energy of the fissioning system vs En, neutron multiplicity. Compared to 232Th(p, F) published data.
doi: 10.1140/epja/i2017-12436-9
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
2016NE02 Nucl.Data Sheets 131, 289 (2016) D.Neudecker, T.N.Taddeucci, R.C.Haight, H.Y.Lee, M.C.White, M.E.Rising The Need for Precise and Well-documented Experimental Data on Prompt Fission Neutron Spectra from Neutron-induced Fission of 239Pu NUCLEAR REACTIONS 239Pu(n, F), E<20 MeV; calculated prompt fission En, In. Comparison with available data.
doi: 10.1016/j.nds.2015.12.005
2015HA01 Nucl.Data Sheets 123, 130 (2015) R.C.Haight, C.Y.Wu, H.Y.Lee, T.N.Taddeucci, B.A.Perdue, J.M.O'Donnell, N.Fotiades, M.Devlin, J.L.Ullmann, T.A.Bredeweg, M.Jandel, R.O.Nelson, S.A.Wender, D.Neudecker, M.E.Rising, S.Mosby, S.Sjue, M.C.White, B.Bucher, R.Henderson The LANL/LLNL Prompt Fission Neutron Spectrum Program at LANSCE and Approach to Uncertainties NUCLEAR REACTIONS 239Pu(n, F), E<15 MeV; analyzed available data; deduced possible prompt fission neutron spectra σ, yields, correlation matrices.
doi: 10.1016/j.nds.2014.12.023
2015NE02 Nucl.Data Sheets 123, 146 (2015) D.Neudecker, P.Talou, T.N.Taddeucci, R.C.Haight, T.Kawano, H.Y.Lee, D.L.Smith, R.Capote, M.E.Rising, M.C.White Preliminary Evaluation and Uncertainty Quantification of the Prompt Fission Neutron Spectrum of 239Pu NUCLEAR REACTIONS 239Pu(n, X), E<20 MeV; calculated σ correlation matrices, prompt fission neutron spectrum and associated covariances. ENDF/B-VII.1 evaluated nuclear data library.
doi: 10.1016/j.nds.2014.12.026
2015TA03 Nucl.Data Sheets 123, 135 (2015) T.N.Taddeucci, R.C.Haight, H.Y.Lee, D.Neudecker, J.M.O'Donnell, M.C.White, B.A.Perdue, M.Devlin, N.Fotiadis, J.L.Ullmann, R.O.Nelson, T.A.Bredeweg, M.E.Rising, S.K.Sjue, S.A.Wender, C.Y.Wu, R.Henderson Multiple-scattering Corrections to Measurements of the Prompt Fission Neutron Spectrum NUCLEAR REACTIONS 239Pu(n, F), E<15 MeV; analyzed available data; deduced response functions, the shape of the prompt fission neutron spectrum.
doi: 10.1016/j.nds.2014.12.024
2014CH30 Phys.Rev. C 90, 014602 (2014) A.Chyzh, C.Y.Wu, E.Kwan, R.A.Henderson, T.A.Bredeweg, R.C.Haight, A.C.Hayes-Sterbenz, H.Y.Lee, J.M.O'Donnell, J.L.Ullmann Total prompt γ-ray emission in fission of 235U, 239, 241Pu, and 252Cf NUCLEAR REACTIONS 235U, 239,241Pu(n, F), E=0.025 eV-100 keV; measured Eγ, Iγ of prompt γ rays, fission fragments using DANCE detector array for γ rays and parallel-plate avalanche counter for fission fragments at LLNL facility; deduced γ-ray multiplicity distributions, mean values of the total prompt γ-ray energy. Discussed γ heating in nuclear reactors. Comparison with previous experimental results and ENDF/B-VII.1 evaluation. RADIOACTIVITY 252Cf(SF); measured Eγ, Iγ of prompt γ rays, fission fragments using DANCE detector array for γ rays and parallel-plate avalanche counter for fission fragments at LLNL facility; deduced γ-ray multiplicity distributions, mean values of the total prompt γ-ray energy. Comparison with previous experimental results.
doi: 10.1103/PhysRevC.90.014602
2014HA27 Nucl.Data Sheets 119, 205 (2014) R.C.Haight, H.Y.Lee, T.N.Taddeucci, J.M.O'Donnell, B.A.Perdue, N.Fotiades, M.Devlin, J.L.Ullmann, A.Laptev, T.Bredeweg, M.Jandel, R.O.Nelson, S.A.Wender, M.C.White, C.Y.Wu, E.Kwan, A.Chyzh, R.Henderson, J.Gostic The Prompt Fission Neutron Spectrum (PFNS) Measurement Program at LANSCE
doi: 10.1016/j.nds.2014.08.057
2014KW05 Nucl.Data Sheets 119, 221 (2014) E.Kwan, C.Y.Wu, R.C.Haight, H.Y.Lee, T.A.Bredeweg, A.Chyzh, M.Devlin, N.Fotiades, J.M.Gostic, R.A.Henderson, M.Jandel, A.Laptev, R.O.Nelson, J.M.O'Donnell, B.A.Perdue, T.N.Taddeucci, J.L.Ullmann, S.A.Wender Prompt Fission γ-rays Measured Using Liquid Scintillators NUCLEAR REACTIONS 235U(n, F), E=1-20 MeV; measured prompt Eγ, Iγ, γγ-coin using FIGARO; deduced γ-ray spectrum, unfolded using SVD and iterative Bayesian techniques. Compared to 235Cf(SF). RADIOACTIVITY 235Cf(SF); measured prompt Eγ, Iγ, γγ-coin using FIGARO; deduced γ-ray spectrum, unfolded using SVD and iterative Bayesian techniques. Compared to 235U(n, F).
doi: 10.1016/j.nds.2014.08.061
2014PE14 Nucl.Data Sheets 119, 371 (2014) B.A.Perdue, T.N.Taddeucci, R.C.Haight, T.Bredeweg, M.Devlin, N.Fotiades, M.Jandel, A.Laptev, H.Y.Lee, R.O.Nelson, J.M.O'Donnell, J.L.Ullmann, S.A.Wender, C.Y.Wu, E.Kwan, A.Chyzh, R.A.Henderson, J.M.Gostic Development of an Array of Liquid Scintillators to Measure the Prompt Fission Neutron Spectrum at LANSCE
doi: 10.1016/j.nds.2014.08.102
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
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
2013KA14 Acta Phys.Pol. B44, 349 (2013) B.P.Kay, M.Alcorta, B.B.Back, S.Bedoor, P.F.Bertone, S.I.Baker, J.A.Clark, C.M.Deibel, B.J.DiGiovine, S.J.Freeman, C.R.Hoffman, H.Y.Lee, J.C.Lighthall, A.Macchiavelli, S.T.Marley, P.Muller, R.Pardo, K.E.Rehm, A.Rojas, A.M.Rogers, J.Rohrer, D.Santiago-Gonzalez, J.P.Schiffer, D.K.Sharp, D.V.Shetty, J.S.Thomas, I.Wiedenhover, A.H.Wuosmaa Transfer Reactions and the Structure of Neutron-rich Nuclei
doi: 10.5506/APhysPolB.44.349
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
2012EN05 Phys.Rev. C 86, 064605 (2012) A.Enqvist, B.M.Wieger, L.Huang, M.Flaska, S.A.Pozzi, R.C.Haight, H.Y.Lee, E.Kwan, C.Y.Wu Neutron-induced 235U fission spectrum measurements using liquid organic scintillation detectors NUCLEAR REACTIONS 235U(n, F), E=0.5-10 MeV; measured neutron and γ TOF spectra, neutron fission spectra, average emitted neutron energy at LANSCE facility. Monte-Carlo simulations. Watt-spectra fits. Comparison with previous experimental studies.
doi: 10.1103/PhysRevC.86.064605
2012KW01 Nucl.Instrum.Methods Phys.Res. A688, 55 (2012) E.Kwan, C.Y.Wu, R.C.Haight, H.Y.Lee, T.A.Bredeweg, A.Chyzh, M.Devlin, N.Fotiades, J.M.Gostic, R.A.Henderson, M.Jandel, A.Laptev, R.O.Nelson, J.M.O'Donnell, B.A.Perdue, T.N.Taddeucci, J.L.Ullmann, S.A.Wender Prompt energy distribution of 235U(n, f)γ at bombarding energies of 1-20 MeV NUCLEAR REACTIONS 235U(n, F), E=1-20 MeV; measured reaction products, Eγ, Iγ; deduced prompt γ-rays distribution. Comparison with GEANT4 simulations. RADIOACTIVITY 252Cf(SF); measured decay products, Eγ, Iγ; deduced prompt γ-rays distribution. Comparison with GEANT4 simulations.
doi: 10.1016/j.nima.2012.06.003
2012PA08 Phys.Rev. C 85, 035808 (2012), Erratum Phys.Rev. C 88, 039902 (2013) A.Palumbo, W.P.Tan, J.Gorres, A.Best, M.Couder, R.Crowter, R.J.de Boer, S.Falahat, P.J.LeBlanc, H.Y.Lee, S.O'Brien, E.Strandberg, M.Wiescher, J.P.Greene, Zs.Fulop, G.G.Kiss, E.Somorjai, N.Ozkan, G.Efe, R.T.Guray Systematic study of the α-optical potential via elastic scattering near the Z=50 region for p-process nuclei NUCLEAR REACTIONS 106Cd, 118Sn, 120,124,126,128,130Te(α, α), E=17-27 MeV; measured Eα, Iα, σ(E, θ). 106Cd, 112Sn(α, γ), E(cm)=7-12.5 MeV; 106Cd, 120Te(α, n), E(cm)=9.7-12.5 MeV; 118Sn(α, n), E=11-16.5 MeV; 106Cd(α, p), E(cm)=8.6-10.3 MeV; 112Sn(α, p), E(cm)=9.2-12.0 MeV; deduced σ and S factors relevant to p-process nuclei. Optical model analysis. HF statistical model calculations. Comparisons with other measurements.
doi: 10.1103/PhysRevC.85.035808
2011DE28 Phys.Rev. C 84, 045802 (2011) C.M.Deibel, K.E.Rehm, J.M.Figueira, J.P.Greene, C.L.Jiang, B.P.Kay, H.Y.Lee, J.C.Lighthall, S.T.Marley, R.C.Pardo, N.Patel, M.Paul, C.Ugalde, A.Woodard, A.H.Wuosmaa, G.Zinkann First measurement of the 33Cl(p, α)30S reaction NUCLEAR REACTIONS 1H(33Cl, α)30S, [33Cl secondary beam from 2H(32S, 33Cl), E=320 MeV primary reaction], E=208.1, 229.1, 250.6 MeV; measured Eα, Iα, particle spectra, (30S)α-coin; deduced cross sections. Enge split-pole magnetic spectrograph. Comparison of measured σ with NON-SMOKER code calculations.
doi: 10.1103/PhysRevC.84.045802
2010BA06 Phys.Rev.Lett. 104, 132501 (2010) B.B.Back, S.I.Baker, B.A.Brown, C.M.Deibel, S.J.Freeman, B.J.DiGiovine, C.R.Hoffman, B.P.Kay, H.Y.Lee, J.C.Lighthall, S.T.Marley, R.C.Pardo, K.E.Rehm, J.P.Schiffer, D.V.Shetty, A.W.Vann, J.Winkelbauer, A.H.Wuosmaa First Experiment with HELIOS: The Structure of 13B NUCLEAR REACTIONS 12B(d, p), E=75 MeV; measured Ep, Ip, recoil ions; deduced σ(θ), spectroscopic factors, constrained J, π.
doi: 10.1103/PhysRevLett.104.132501
2010CO12 Phys.Rev. C 82, 035802 (2010) H.Costantini, R.J.de Boer, R.E.Azuma, M.Couder, J.Gorres, J.W.Hammer, P.J.LeBlanc, H.Y.Lee, S.O'Brien, A.Palumbo, E.C.Simpson, E.Stech, W.Tan, E.Uberseder, M.Wiescher 16O(α, γ)20Ne S factor: Measurements and R-matrix analysis NUCLEAR REACTIONS 16O(α, γ), E=2.5 MeV; measured Eγ, Iγ, γγ-coin, Eα, Iα. 20Ne; deduced levels, J, π, resonances, width, yields, branching ratios, S factors, reaction rates. R-matrix analysis.
doi: 10.1103/PhysRevC.82.035802
2010JI03 Phys.Rev. C 81, 024611 (2010) C.L.Jiang, K.E.Rehm, H.Esbensen, B.B.Back, R.V.F.Janssens, P.Collon, C.M.Deibel, B.DiGiovine, J.M.Figueira, J.P.Greene, D.J.Henderson, H.Y.Lee, M.Notani, S.T.Marley, R.C.Pardo, N.Patel, D.Seweryniak, X.D.Tang, C.Ugalde, S.Zhu Fusion hindrance for 27Al+45Sc and other systems with a positive Q value NUCLEAR REACTIONS 45Sc(27Al, X), E=51-82 MeV; measured fragment spectra, σ, astrophysical S-factor. Comparison with coupled-channels calculations. 14N(14N, X), E=4-11 MeV; 30Si(28Si, X), E=25-31 MeV; 45Sc(27Al, X), E=32-39 MeV; 64Ni(28Si, X), E=44-51 MeV; 40Ca(40Ca, X), E=49-57 MeV; 48Ca(48Ca, X), E=46-56 MeV; 48Ca(36S, X), E=37-48 MeV; comparison of measured cross sections and astrophysical S-factors with coupled-channel calculations.
doi: 10.1103/PhysRevC.81.024611
2010LE02 Phys.Rev. C 81, 015802 (2010) H.Y.Lee, J.P.Greene, C.L.Jiang, R.C.Pardo, K.E.Rehm, J.P.Schiffer, A.H.Wuosmaa, N.J.Goodman, J.C.Lighthall, S.T.Marley, K.Otsuki, N.Patel, M.Beard, M.Notani, X.D.Tang Experimental study of the 11, 12B(n, γ) reactions and their influence on r-process nucleosynthesis of light elements NUCLEAR REACTIONS 2H(11B, p), E=81 MeV; 2H(12B, p), E=75 MeV; measured proton and 11,12,13B particle spectra, σ(θ). 12,13B; deduced levels, J, π, l-transfers. Comparison with DWBA calculations. 11B, 12B(n, γ); deduced reaction rates of astrophysical relevance, and abundances of 11B and 12B in r process.
doi: 10.1103/PhysRevC.81.015802
2010WU06 Phys.Rev.Lett. 105, 132501 (2010) A.H.Wuosmaa, B.B.Back, S.Baker, B.A.Brown, C.M.Deibel, P.Fallon, C.R.Hoffman, B.P.Kay, H.Y.Lee, J.C.Lighthall, A.O.Macchiavelli, S.T.Marley, R.C.Pardo, K.E.Rehm, J.P.Schiffer, D.V.Shetty, M.Wiedeking 15C(d, p)16C Reaction and Exotic Behavior in 16C NUCLEAR REACTIONS 2H(15C, p)16C, E=123 MeV; measured proton spectra; deduced σ(θ), relative spectroscopic factors, excitation energies, wave functions. Comparison with shell model calculations.
doi: 10.1103/PhysRevLett.105.132501
2009GU27 Phys.Rev. C 80, 035804 (2009) R.T.Guray, N.Ozkan, C.Yalcin, A.Palumbo, R.deBoer, J.Gorres, P.J.Leblanc, S.O'Brien, E.Strandberg, W.P.Tan, M.Wiescher, Zs.Fulop, E.Somorjai, H.Y.Lee, J.P.Greene Measurements of proton-induced reaction cross sections on 120Te for the astrophysical p process NUCLEAR REACTIONS 120Te(p, γ), (p, n), E(cm)=2.47-7.93 MeV; measured Eγ, Iγ, half-life, σ by activation method; deduced astrophysical S factors. Comparison with statistical model calculations using NON-SMOKER and TALYS computer codes. RADIOACTIVITY 120I(EC); measured Eγ. 120I; deduced ground-state half-life.
doi: 10.1103/PhysRevC.80.035804
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
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
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
2008JI04 Phys.Rev. C 78, 017601 (2008) C.L.Jiang, B.B.Back, H.Esbensen, J.P.Greene, R.V.F.Janssens, D.J.Henderson, H.Y.Lee, C.J.Lister, M.Notani, R.C.Pardo, N.Patel, K.E.Rehm, D.Seweryniak, B.Shumard, X.Wang, S.Zhu, S.Misicu, P.Collon, X.D.Tang Fusion hindrance for a positive Q-value system NUCLEAR REACTIONS 30Si(28Si, X), E=48.5-71 MeV; measured excitation functions, fusion σ. 12C(12C, X); systematics of Q-values. Comparisons with model calculations.
doi: 10.1103/PhysRevC.78.017601
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
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
2007OZ01 Phys.Rev. C 75, 025801 (2007) N.Ozkan, G.Efe, R.T.Guray, A.Palumbo, J.Gorres, H.Y.Lee, L.O.Lamm, W.Rapp, E.Stech, M.Wiescher, Gy.Gyurky, Zs.Fulop, E.Somorjai Astrophysical S factor for α-capture on 112Sn in the p-process energy range NUCLEAR REACTIONS 112Sn(α, γ), (α, p), E(cm)=7.59-11.42 MeV; measured σ; deduced astrophysical S-factors. Activation technique.
doi: 10.1103/PhysRevC.75.025801
2006GY01 Phys.Rev. C 74, 025805 (2006) Gy.Gyurky, G.G.Kiss, Z.Elekes, Zs.Fulop, E.Somorjai, A.Palumbo, J.Gorres, H.Y.Lee, W.Rapp, M.Wiescher, N.Ozkan, R.T.Guray, G.Efe, T.Rauscher α-induced cross sections of 106Cd for the astrophysical p process NUCLEAR REACTIONS 106Cd(α, γ), (α, n), (α, p), E ≈ 7.5-12.5 MeV; measured σ; deduced S-factors. Comparison with statistical model predictions. Astrophysical implications discussed.
doi: 10.1103/PhysRevC.74.025805
2006OZ05 Eur.Phys.J. A 27, Supplement 1, 145 (2006) N.Ozkan, G.Efe, R.T.Guray, A.Palumbo, M.Wiescher, J.Gorres, H.-Y.Lee, Gy.Gyurky, E.Somorjai, Zs.Fulop A study of alpha capture cross-sections of 112Sn NUCLEAR REACTIONS 112Sn(α, γ), E=8-12 MeV; measured σ. Activation technique.
doi: 10.1140/epja/i2006-08-021-x
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
2001AG06 Phys.Rev. C63, 061603 (2001) E.F.Aguilera, J.J.Kolata, F.D.Becchetti, P.A.DeYoung, J.D.Hinnefeld, A.Horvath, L.O.Lamm, H.-Y.Lee, D.Lizcano, E.Martinez-Quiroz, P.Mohr, T.W.O'Donnell, D.A.Roberts, G.Rogachev Elastic Scattering and Transfer in the 6He + 209Bi System below the Coulomb Barrier NUCLEAR REACTIONS 209Bi(6He, X), E(cm)=14.3-21.4 MeV; measured reaction σ. 209Bi(6He, 6He), (6He, αX), E(cm)=14.3-21.4 MeV; measured σ(θ); deduced optical model parameters.
doi: 10.1103/PhysRevC.63.061603
2001RO32 Phys.Rev. C64, 061601 (2001) G.V.Rogachev, J.J.Kolata, F.D.Becchetti, P.A.DeYoung, M.Hencheck, K.Helland, J.D.Hinnefeld, B.Hughey, P.L.Jolivette, L.M.Kiessel, H.-Y.Lee, M.Y.Lee, T.W.O'Donnell, G.F.Peaslee, D.Peterson, D.A.Roberts, P.Santi, S.A.Shaheen Proton Elastic Scattering from 7Be at Low Energies NUCLEAR REACTIONS 1H(7Be, 7Be), E < 25.5 MeV; measured back-angle recoil proton spectra, σ(θ). 7Be(p, p), E=1-3.3 MeV; deduced excitation function. 8B deduced levels, J, π. Predicted 1+ state in 8B not found, astrophysical implication discussed. Thick target technique.
doi: 10.1103/PhysRevC.64.061601
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