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NSR database version of April 11, 2024.

Search: Author = T.Kawano

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2023KA11      Phys.Rev. C 107, 044608 (2023)

T.Kawano, A.E.Lovell, S.Okumura, H.Sasaki, I.Stetcu, P.Talou

Consideration of memory of spin and parity in the fissioning compound nucleus by applying the Hauser-Feshbach fission fragment decay model to photonuclear reactions

NUCLEAR REACTIONS 238U(n, X), (γ, X), E<20 MeV; calculated partial population of compound nucleus. 235,238U, 239Pu(γ, F), E=1-20 MeV; calculated prompt fission γ-ray spectra, average number of prompt and delayed neutrons, total kinetic energies, cumulative fission product yields. Hauser-Feshbach statistical calculations of fission fragment decay with HF3D model. Comparison to experimental results and IAEA evaluation.

doi: 10.1103/PhysRevC.107.044608
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2023KA24      Phys.Rev. C 108, 034610 (2023)

T.Katabuchi, M.Igashira, S.Kamada, M.Tajika, N.Iwamoto, T.Kawano

Neutron capture cross section and capture γ-ray spectrum of 88Sr in the stellar nucleosynthesis energy region

doi: 10.1103/PhysRevC.108.034610
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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
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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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2023MU06      Phys.Rev. C 107, 034606 (2023)

M.R.Mumpower, D.Neudecker, H.Sasaki, T.Kawano, A.E.Lovell, M.W.Herman, I.Stetcu, M.Dupuis

Collective enhancement in the exciton model

NUCLEAR REACTIONS 239Pu(n, 2n), E=6-24 MeV; calculated σ(E). 239Pu(n, xn), E=14 MeV; 181Ta, 165(n, xn), E=20 MeV; calculated neutron emission spectra. Calculation with statistical model framework CoH3 with increased one-particle-one-hole state density used in the exciton model. Comparison to experimental data and ENDF/B-VIII.0.

NUCLEAR STRUCTURE 239Pu; calculated 1p-1h state densities.

doi: 10.1103/PhysRevC.107.034606
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2023SA19      Phys.Rev. C 107, 054312 (2023)

H.Sasaki, T.Kawano, I.Stetcu

Quasiparticle random-phase approximation calculations for M1 transitions with the noniterative finite-amplitude method and application to neutron radiative capture cross sections

NUCLEAR REACTIONS 156Gd(γ, X), E<20 MeV; calculated total photoabsorption σ(E) of the M1 and E1 transitions, B(M1) strength functions of the M1 transitions, scissor mode excitations with and without spurious mode. 156,157,158,161Gd(n, X), E=0.001-15 MeV; calculated capture σ(E). Calculations of magnetic dipole transitions in the framework of finite amplitude method of quasiparticle random-phase approximation (FAM-QRPA) with the Hartree-Fock+Bardeen-Cooper-Schrieffer(HF+BCS) single-particle states. Comparison to experimental data.

doi: 10.1103/PhysRevC.107.054312
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2023YO04      Phys.Rev. C 108, 064307 (2023)

R.Yokoyama, R.Grzywacz, B.C.Rasco, N.Brewer, K.P.Rykaczewski, I.Dillmann, J.L.Tain, S.Nishimura, D.S.Ahn, A.Algora, J.M.Allmond, J.Agramunt, H.Baba, S.Bae, C.G.Bruno, R.Caballero-Folch, F.Calvino, P.J.Coleman-Smith, G.Cortes, T.Davinson, C.Domingo-Pardo, A.Estrade, N.Fukuda, S.Go, C.J.Griffin, J.Ha, O.Hall, L.J.Harkness-Brennan, J.Heideman, T.Isobe, D.Kahl, M.Karny, T.Kawano, L.H.Khiem, T.T.King, G.G.Kiss, A.Korgul, S.Kubono, M.Labiche, I.Lazarus, J.Liang, J.Liu, G.Lorusso, M.Madurga, K.Matsui, K.Miernik, F.Montes, A.I.Morales, P.Morrall, N.Nepal, R.D.Page, V.H.Phong, M.Piersa-Silkowska, M.Prydderch, V.F.E.Pucknell, M.M.Rajabali, B.Rubio, Y.Saito, H.Sakurai, Y.Shimizu, J.Simpson, M.Singh, D.W.Stracener, T.Sumikama, H.Suzuki, H.Takeda, A.Tarifeno-Saldivia, S.L.Thomas, A.Tolosa-Delgado, M.Wolinska-Cichocka, P.J.Woods, X.X.Xu

β-delayed neutron emissions from N>50 gallium isotopes

doi: 10.1103/PhysRevC.108.064307
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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
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2022KO31      Astrophys.J. 937, 116 (2022)

H.Ko, D.Jang, M.-K.Cheoun, M.Kusakabe, H.Sasaki, X.Yao, T.Kajino, T.Hayakawa, M.Ono, T.Kawano, G.J.Mathews

Comprehensive Analysis of the Neutrino Process in Core-collapsing Supernovae

ATOMIC MASSES 7Li, 7Be, 11B, 11C, 92Nb, 98Tc, 138La, 180Ta; analyzed available data; deduced abundances for the neutrino flavor change effects due to neutrino self-interaction and shock wave propagation, as well as the matter effects on the neutrino process in core-collapsing supernovae (CCSNe).

doi: 10.3847/1538-4357/ac88cd
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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
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2022MU18      Phys.Rev. C 106, 065805 (2022)

M.R.Mumpower, T.Kawano, T.M.Sprouse

β-delayed fission in the coupled quasiparticle random-phase approximation plus Hauser-Feshbach approach

RADIOACTIVITY 282Bk(β-F); calculated probabilities for neutron, γ, and fission channels, and total transmission coefficient sum. 290Am, 295Fm(β-n), (β-F); calculated probabilities for delayed neutron and delayed fission as a function of j-th neutrons emitted from the daughter nuclei. Z=94, A=254-324(β-n), (β-F); Z=97, A=257-327(β-n), (β-F); calculated cumulative probabilities for emitting neutrons or fission after β- decay, S(n) and maximum fission barriers. Z=85-120, N=160-230(β-n), (β-F); calculated average neutron multiplicities, average β--delayed neutron emission energies, cumulative probability of β--delayed fission (βdf). 244,246Pa, 248,250Np, 252,254Am, 256,258,259Bk, 261Cf, 262,263Es, 264,266,267Md, 269No, 268,269,270,271Lr, 271,273Rf, 272,273,274,275Db, 280,281,282,283Bh, 285Hs, 284,285,286,287Mt(β-F); calculated β-delayed fission (βdf) branching ratios greater than 1% among 72 model variations. Z=80, A=207-266; Z=81, A=210-268; Z=82, A=211-273; Z=83, A=212-276; Z=84, A=215, 217-279; Z=85, A=216-282; Z=86, A=221, 223-286; Z=87, A=222-289; Z=88, A=225, 227, 229-292; Z=89, A=224, 226, 228-295; Z=90, A=233-299; Z=91, A=230, 232, 234-302; Z=92, A=239-305; Z=93, A=236, 238, 240-308; Z=94, A=243, 245-312; Z=95, A=242, 244-315; Z=96, A=249, 251-318; Z=97, A=248, 250-321; Z=98, A=253, 255, 257-325; Z=99, A=252, 254-328; Z=100, A=261, 263-331; Z=101, A=260, 262-334; Z=102, A=265, 267-338; Z=103, A=264, 266-339; Z=104, A=269, 271, 273, 275-339; Z=105, A=270, 272-339; Z=106, A=279, 281-339; Z=107, A=274, 276, 278, 280-339; Z=108, A=285, 287-339; Z=109, A=282, 284-339; Z=110, A=291, 293-339; Z=111, A=288, 290-339; Z=112, A=295, 297-339; Z=113, A=294, 296-339; Z=114, A=301, 303, 305-339; Z=115, A=300, 302, 304-339; Z=116, A=309, 313, 315-339; Z=117, A=306, 308, 310-339; Z=118, A=323-339; Z=119, A=312, 316-339; Z=120, A=323, 325, 327-339; Z=121, A=320, 322, 324-339; Z=122, A=329, 331, 335-339; Z=123, A=326, 328-339; Z=124, A=337; Z=125, A=332, 334, 336-339; Z=127, A=338; calculated j-neutron emission probabilities (%β-xn or Pxn up to x=0-10), average neutron emission energies, average neutron multiplicities, and j-th neutron beta-delayed fission (βdf) probabilities after β- decay for 2436 neutron-rich nuclei, with numerical values listed in Supplemental Material. Los Alamos coupled quasiparticle random-phase approximation plus Hauser-Feshbach (QRPA+HF) approach.

doi: 10.1103/PhysRevC.106.065805
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2022OK02      J.Nucl.Sci.Technol.(Tokyo) 59, 96 (2022)

S.Okumura, T.Kawano, A.E.Lovell, T.Yoshida

Energy Dependent Calculations of Fission Product, Prompt, and Delayed Neutron Yields for Neutron Induced Fission on 235U, 238U, and 239Pu

NUCLEAR REACTIONS 235,238U, 239Pu(n, F), E<5 MeV; calculated neutron multiplicity (nubar), cumulative fission product yield, delayed neutron yield. The Hauser-Feshbach Fission Fragment Decay (HF3D) model. Comparison with experimental data.

doi: 10.1080/00223131.2021.1954103
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2022PH01      Phys.Rev.Lett. 129, 172701 (2022)

V.H.Phong, S.Nishimura, G.Lorusso, T.Davinson, A.Estrade, O.Hall, T.Kawano, J.Liu, F.Montes, N.Nishimura, R.Grzywacz, K.P.Rykaczewski, J.Agramunt, D.S.Ahn, A.Algora, J.M.Allmond, H.Baba, S.Bae, N.T.Brewer, C.G.Bruno, R.Caballero-Folch, F.Calvino, P.J.Coleman-Smith, G.Cortes, I.Dillmann, C.Domingo-Pardo, A.Fijalkowska, N.Fukuda, S.Go, C.J.Griffin, J.Ha, L.J.Harkness-Brennan, T.Isobe, D.Kahl, L.H.Khiem, G.G.Kiss, A.Korgul, S.Kubono, M.Labiche, I.Lazarus, J.Liang, Z.Liu, K.Matsui, K.Miernik, B.Moon, A.I.Morales, P.Morrall, N.Nepal, R.D.Page, M.Piersa-Silkowska, V.F.E.Pucknell, B.C.Rasco, B.Rubio, H.Sakurai, Y.Shimizu, D.W.Stracener, T.Sumikama, H.Suzuki, J.L.Tain, H.Takeda, A.Tarifeno-Saldivia, A.Tolosa-Delgado

β-Delayed One and Two Neutron Emission Probabilities Southeast of 132Sn and the Odd-Even Systematics in r-Process Nuclide Abundances

NUCLEAR REACTIONS 9Be(238U, F)121Rh/122Rh/123Rh/124Rh/125Rh/123Pd/124Pd/125Pd/126Pd/127Pd/128Pd/126Ag/127Ag/128Ag/129Ag/130Ag/131Ag/129Cd/130Cd/131Cd/132Cd/133Cd/134Cd/131In/132In/133In/134In/135In/136In/134Sn/135Sn/136Sn/137Sn/138Sn/139Sn/138Sb/139Sb/140Sb/141Sb, E=345 MeV/nucleon; measured fission fragments using BigRIPS and ZeroDegree spectrometers at RIBF-RIKEN facility for separation of fragments by A/Q and Z through measurements of time-of-flight (TOF), magnetic rigidity (Bρ) and energy loss (ΔE); deduced A/Q versus Z particle identification plots.

RADIOACTIVITY 129,130,131Ag, 130,131,132,133Cd, 134Cd, 131,132,133,134,135,136In, 134,135,136,137,138,139Sn(β-), (β-n), (β-2n)[from 9Be(238U, F), E=345 MeV/nucleon]; measured implanted ions, neutrons, β, γ, (implants)β-, (implants)β(1n)- and (implants)β(2n)-correlations, T1/2 of decays of ground states using BRIKEN neutron counter with 140 3He-filled proportional counters, AIDA array of DSSSDs for implants and β decays, two Clover HPGe detectors for γ radiation, and two thick plastic scintillators; deduced T1/2, %β-n or Pn, %β-2n or P2n from simultaneous fits of β-, β-1n and β-2n-decay curves. Comparison with previous experimental results, and with theoretical predictions from quasiparticle random-phase approximation (QRPA), based on finite range droplet model (FRDM) and the relativistic Hartree-Bogoliubov (RHB) plus proton-neutron QRPA (pnQRPA).

doi: 10.1103/PhysRevLett.129.172701
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset23786. Data from this article have been entered in the XUNDL database. For more information, click here.


2022SA16      Phys.Rev. C 105, 044311 (2022)

H.Sasaki, T.Kawano, I.Stetcu

Noniterative finite amplitude methods for E1 and M1 giant resonances

NUCLEAR REACTIONS 16O, 40,48Ca, 54Fe, 154Sm, 208Pb, 238U(γ, X), E<40 MeV; calculated photoabsorption σ(E), E1 and M1 strengths distributions, giant dipole resonance features. Finite amplitude method (FAM) used to solve the fully self-consistent random phase approximation equations (FAM-RPA method). Comparison to experimental data.

doi: 10.1103/PhysRevC.105.044311
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2021HE28      Ann.Nucl.Energy 163, 108494 (2021)

M.Herman, D.A.Brown, R.Capote, M.B.Chadwick, W.Haeck, J.D.Hutchinson, T.Kawano, D.Neudecker, G.Palmiotti, M.Salvatores, P.Talou, A.Trkov, M.C.White

Infrastructure for the new paradigm of nuclear reaction evaluation

NUCLEAR REACTIONS 105Pd(n, γ), 235U, 239Pu(n, F), E<20 MeV; analyzed available data; deduced pilot assimilation project needs.

doi: 10.1016/j.anucene.2021.108494
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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
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset14521.


2021KA10      Eur.Phys.J. A 57, 16 (2021)

T.Kawano

Unified description of the coupled-channels and statistical Hauser-Feshbach nuclear reaction theories for low energy neutron incident reactions

NUCLEAR REACTIONS 238U(n, X), E(cm)<1.5 MeV; calculated transmission coefficients for the first and second coupled levels, coefficients for uncoupled channels, width fluctuation corrections, σ using statistical Hauser-Feshbach nuclear reaction theory, where the scattering matrix is diagonalized by performing the Engelbrecht-Weidenmuller transformation. Comparison with available data.

doi: 10.1140/epja/s10050-020-00311-9
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2021KA34      Phys.Rev. C 104, 014611 (2021)

T.Kawano, S.Okumura, A.E.Lovell, I.Stetcu, P.Talou

Influence of nonstatistical properties in nuclear structure on emission of prompt fission neutrons

NUCLEAR REACTIONS 235U(n, F), E=thermal; calculated prompt fission E(n), I(n), individual contribution from each fission fragment to prompt fission neutron spectrum (PFNS) using Hauser-Feshbach fission-fragment decay (HF3D) model. Comparison with experimental data.

doi: 10.1103/PhysRevC.104.014611
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2021KE09      Phys.Rev. C 104, 044605 (2021)

M.Kerveno, M.Dupuis, A.Bacquias, F.Belloni, D.Bernard, C.Borcea, M.Boromiza, R.Capote, C.De Saint Jean, P.Dessagne, J.C.Drohe, G.Henning, S.Hilaire, T.Kawano, P.Leconte, N.Nankov, A.Negret, M.Nyman, A.Olacel, A.J.M.Plompen, P.Romain, C.Rouki, G.Rudolf, M.Stanoiu, R.Wynants

Measurement of 238U(n, n'γ) cross section data and their impact on reaction models

NUCLEAR REACTIONS 238U(n, n'γ), E<20 MeV from GELINA facility at EC-JRC Geel; measured Eγ, Iγ, γ(TOF)-plot, angle-integrated γ-production σ(E, θ) using time-of-flight (TOF) and prompt γ-ray spectroscopy methods using the GRAPhEME spectrometer at GELINA. 238U; deduced levels, γ transitions, Iγ values, multipolarities, σ for E2 transitions, discrete structure and interband transition; discussed new or revised γ ray energies and intensities for 218.1-, 270.1-, 680.11-, 931.1-, 950.12- and 997.58-keV γ rays, as compared to evaluated data in the ENSDF database and those in 2014Go06 (Phys. Atomic Nuclei 77, 131). Comparison with previous experimental and evaluated reaction cross section data, and with TALYS, EMPIRE and CoH theoretical calculations using nuclear reaction codes dealing with compound nucleus, and pre-equilibrium mechanisms. Relevance to microscopic improving the modeling of the (n, n') reaction.

doi: 10.1103/PhysRevC.104.044605
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset22795. Data from this article have been entered in the XUNDL database. For more information, click here.


2021LO02      Phys.Rev. C 103, 014615 (2021)

A.E.Lovell, T.Kawano, S.Okumura, I.Stetcu, M.R.Mumpower, P.Talou

Extension of the Hauser-Feshbach fission fragment decay model to multichance fission

NUCLEAR REACTIONS 235U(n, F), E=0-20 MeV; calculated multichance fission probabilities, average excitation energy causing fission for first-, second-, third-, and fourth-chance fission, pre-neutron-emission mass yields, total kinetic energy (TKE) and average prompt neutron and γ-ray multiplicities as function of incident neutron energy, average neutron multiplicity as a function of fragment mass, prompt fission γ-ray spectrum, independent and cumulative fission mass yields, average number of delayed neutrons emitted in fission. Extended deterministic Hauser-Feshbach fission fragment decay model (HF3D) within the code BeoH to calculate prompt and delayed particle emission from fission fragments. Comparison with experimental data.

doi: 10.1103/PhysRevC.103.014615
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2021NE06      Phys.Rev. C 104, 034611 (2021)

D.Neudecker, O.Cabellos, A.R.Clark, M.J.Grosskopf, W.Haeck, M.W.Herman, J.Hutchinson, T.Kawano, A.E.Lovell, I.Stetcu, P.Talou, S.Vander Wiel

Informing nuclear physics via machine learning methods with differential and integral experiments

NUCLEAR REACTIONS 238U(n, n'), E=14 MeV; analyzed pulsed-sphere neutron-leakage experimental spectrum obtained at LLNL facility, and compared with evaluated data in ENDF/B-VIII.0. 241Pu(n, F), E=0.1-1.0, 14 MeV; analyzed differential and integral experimental data for fission σ(E) by combining experimental σ data, nuclear-physics theory and neutron-transport simulations of the experiments using machine learning (ML) random forest algorithm and expert judgment. Relevance to improvement of description of nuclear-physics observables in particular application areas.

doi: 10.1103/PhysRevC.104.034611
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2021ST18      Phys.Rev.Lett. 127, 222502 (2021)

I.Stetcu, A.E.Lovell, P.Talou, T.Kawano, S.Marin, S.A.Pozzi, A.Bulgac

Angular Momentum Removal by Neutron and γ-Ray Emissions during Fission Fragment Decays

NUCLEAR REACTIONS 235U, 239Pu(n, F), E thermal; 238U(n, F), E=1.9 MeV; analyzed available data; deduced the angular momentum removal from fission fragments through neutron and γ-ray emission, wide angular momentum removal distributions can hide any underlying correlations in the fission fragment initial spin values.

RADIOACTIVITY 252Cf(SF); analyzed available data; deduced the angular momentum removal from fission fragments through neutron and γ-ray emission.

doi: 10.1103/PhysRevLett.127.222502
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2021TA33      Comput.Phys.Commun. 269, 108087 (2021)

P.Talou, I.Stetcu, P.Jaffke, M.E.Rising, A.E.Lovell, T.Kawano

Fission fragment decay simulations with the CGMFcode

RADIOACTIVITY 252Cf(SF); calculated fission fragment mass yields.

NUCLEAR REACTIONS 235U(n, F), E=0.0000000253, 2, 5 MeV; calculated fission fragment mass yields.

doi: 10.1016/j.cpc.2021.108087
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2020KA09      Nucl.Data Sheets 163, 109 (2020)

T.Kawano, Y.S.Cho, P.Dimitriou, D.Filipescu, N.Iwamoto, V.Plujko, X.Tao, H.Utsunomiya, V.Varlamov, R.Xu, R.Capote, I.Gheorghe, O.Gorbachenko, Y.L.Jin, T.Renstrom, M.Sin, K.Stopani, Y.Tian, G.M.Tveten, J.M.Wang, T.Belgya, R.Firestone, S.Goriely, J.Kopecky, M.Krticka, R.Schwengner, S.Siem, M.Wiedeking

IAEA Photonuclear Data Library 2019

doi: 10.1016/j.nds.2019.12.002
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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
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset14682.


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
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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
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset14683.


2020ST01      Nucl.Data Sheets 163, 261 (2020)

I.Stetcu, M.B.Chadwick, T.Kawano, P.Talou, R.Capote, A.Trkov

Evaluation of the Prompt Fission Gamma Properties for Neutron Induced Fission of 235, 238U and 239Pu

NUCLEAR REACTIONS 235,238U, 239Pu(n, F), E<20 MeV; analyzed available data; deduced prompt fission γ-ray emission properties.

doi: 10.1016/j.nds.2019.12.007
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2019AL09      Phys.Rev. C 99, 024621 (2019)

Y.Alhassid, G.F.Bertsch, P.Fanto, T.Kawano

Transmission coefficients in compound-nucleus reaction theory

doi: 10.1103/PhysRevC.99.024621
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2019BE12      Phys.Rev. C 99, 034603 (2019)

G.F.Bertsch, T.Kawano, L.M.Robledo

Angular momentum of fission fragments

NUCLEAR REACTIONS 235U(n, F)140Ba/140Te/140Xe/96Kr/96Zr/96Sr, E not given; calculated angular momentum of various fission fragments as a function of deformation β, angular distribution and anisotropy of dipole and quadrupole γ rays, anisotropy coefficients using usual spin-cutoff parametrization. discussed division of excitation energy in the newly formed fission fragments. Comparison with experimental values.

doi: 10.1103/PhysRevC.99.034603
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2019GO30      Eur.Phys.J. A 55, 172 (2019)

S.Goriely, P.Dimitriou, M.Wiedeking, T.Belgya, R.Firestone, J.Kopecky, M.Krticka, V.Plujko, R.Schwengner, S.Siem, H.Utsunomiya, S.Hilaire, S.Peru, Y.S.Cho, D.M.Filipescu, N.Iwamoto, T.Kawano, V.Varlamov, R.Xu

Reference database for photon strength functions

doi: 10.1140/epja/i2019-12840-1
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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
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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
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2019MA71      Phys.Rev. C 100, 044610 (2019)

H.Makii, K.Nishio, K.Hirose, R.Orlandi, R.Leguillon, T.Ogawa, T.Soldner, U.Koster, A.Pollitt, F.-J.Hambsch, I.Tsekhanovich, M.Aiche, S.Czajkowski, L.Mathieu, C.M.Petrache, A.Astier, S.Guo, T.Ohtsuki, S.Sekimoto, K.Takamiya, R.J.W.Frost, T.Kawano

Effects of the nuclear structure of fission fragments on the high-energy prompt fission γ-ray spectrum in 235U(nth, f)

NUCLEAR REACTIONS 235U(n, F), E=cold neutrons; measured fission fragments, Eγ, Iγ, prompt fission γ-ray spectra (PFGS), (fragment)(fragment)- and (fragment)γ-coin, time of flight using two MWPCs and two LaBr3(Ce) scintillators at the PF1B cold-neutron beam facility of ILL-Grenoble; deduced fission-fragment mass distribution, average γ and neutron multiplicities as function of fragment mass. Comparison of the present and previous experimental data with statistical Hauser-Feshbach model calculations for PFGS.

doi: 10.1103/PhysRevC.100.044610
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset23541.


2019MO01      At.Data Nucl.Data Tables 125, 1 (2019)

P.Moller, M.R.Mumpower, T.Kawano, W.D.Myers

Nuclear properties for astrophysical and radioactive-ion-beam applications (II)

NUCLEAR STRUCTURE Z=8-136; calculated the ground-state odd-proton and odd-neutron spins and parities, proton and neutron pairing gaps, one- and two-neutron separation energies, quantities related to β-delayed one- and two-neutron emission probabilities, average energy and average number of emitted neutrons, β-decay energy release and T1/2 with respect to Gamow-Teller decay with a phenomenological treatment of first-forbidden decays, one- and two-proton separation energies, and α-decay energy release and half-life.

doi: 10.1016/j.adt.2018.03.003
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2019SC12      Phys.Rev. C 100, 014605 (2019)

P.F.Schuster, M.J.Marcath, S.Marin, S.D.Clarke, M.Devlin, R.C.Haight, R.Vogt, P.Talou, I.Stetcu, T.Kawano, J.Randrup, S.A.Pozzi

High resolution measurement of tagged two-neutron energy and angle correlations in 252Cf (sf)

RADIOACTIVITY 252Cf(SF); measured prompt neutron time of flight, angular distribution of neutrons, nn-coin, prompt neutron emission anisotropy, correlations in angle and energy between prompt neutrons emitted in spontaneous fission using fission chamber and the Chi-Nu liquid scintillator detector array at LANSCE-LANL facility. Comparison with simulations produced by the fission event generators CGMF, FREYA, and MCNPX-POLIMI IPOL(1)=1.

doi: 10.1103/PhysRevC.100.014605
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset14574.


2019VE06      Phys.Rev. C 100, 024612 (2019)

M.Verriere, N.Schunck, T.Kawano

Number of particles in fission fragments

RADIOACTIVITY 240Pu(SF); calculated mass, neutron and charge fragmentation probabilities for several scission configurations in 240Pu using a macroscopic-microscopic approach or full Hartree-Fock-Bogoliubov calculations. Discussed two methods to estimate particle-number dispersion in fission fragments, Monte Carlo sampling of single-particle configurations, and extended standard projection techniques.

doi: 10.1103/PhysRevC.100.024612
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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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2019YO03      Phys.Rev. C 100, 031302(R) (2019)

R.Yokoyama, R.Grzywacz, B.C.Rasco, N.Brewer, K.P.Rykaczewski, I.Dillmann, J.L.Tain, S.Nishimura, D.S.Ahn, A.Algora, J.M.Allmond, J.Agramunt, H.Baba, S.Bae, C.G.Bruno, R.Caballero-Folch, F.Calvino, P.J.Coleman-Smith, G.Cortes, T.Davinson, C.Domingo-Pardo, A.Estrade, N.Fukuda, S.Go, C.J.Griffin, J.Ha, O.Hall, L.J.Harkness-Brennan, J.Heideman, T.Isobe, D.Kahl, M.Karny, T.Kawano, L.H.Khiem, T.T.King, G.G.Kiss, A.Korgul, S.Kubono, M.Labiche, I.Lazarus, J.Liang, J.Liu, G.Lorusso, M.Madurga, K.Matsui, K.Miernik, F.Montes, A.I.Morales, P.Morrall, N.Nepal, R.D.Page, V.H.Phong, M.Piersa, M.Prydderch, V.F.E.Pucknell, M.M.Rajabali, B.Rubio, Y.Saito, H.Sakurai, Y.Shimizu, J.Simpson, M.Singh, D.W.Stracener, T.Sumikama, R.Surman, H.Suzuki, H.Takeda, A.Tarifeno-Saldivia, S.L.Thomas, A.Tolosa-Delgado, M.Wolinska-Cichocka, P.J.Woods, X.X.Xu

Strong one-neutron emission from two-neutron unbound states in β decays of the r-process nuclei 86, 87Ga

RADIOACTIVITY 84,85,86,87Ga(β-), (β-n), (β-2n)[from 9Be(238U, F), E=345 MeV/nucleon, followed by separation and identification of fragments using the BigRIPS in-flight separator at RIBF-RIKEN facility]; measured secondary ions implanted into active stoppers made of double-sided silicon-strip detectors (DSSSDs), neutrons by BRIKEN array of 3He counters, WAS3ABi for β and ion detection, and γ rays by two clover-type HPGe detectors, (ions)βn-coin, half-lives of decays of 84,85,86,87Ga; deduced decay curves, %β-n (P1n) and %β-2n (P2n). Comparison with shell-model and QRPA calculations. Relevance to r-process modeling.

doi: 10.1103/PhysRevC.100.031302
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Data from this article have been entered in the XUNDL database. For more information, click here.


2018BR05      Nucl.Data Sheets 148, 1 (2018)

D.A.Brown, M.B.Chadwick, R.Capote, A.C.Kahler, A.Trkov, M.W.Herman, A.A.Sonzogni, Y.Danon, A.D.Carlson, M.Dunn, D.L.Smith, G.M.Hale, G.Arbanas, R.Arcilla, C.R.Bates, B.Beck, B.Becker, F.Brown, R.J.Casperson, J.Conlin, D.E.Cullen, M.-A.Descalle, R.Firestone, T.Gaines, K.H.Guber, A.I.Hawari, J.Holmes, T.D.Johnson, T.Kawano, B.C.Kiedrowski, A.J.Koning, S.Kopecky, L.Leal, J.P.Lestone, C.Lubitz, J.I.Marquez Damian, C.M.Mattoon, E.A.McCutchan, S.Mughabghab, P.Navratil, D.Neudecker, G.P.A.Nobre, G.Noguere, M.Paris, M.T.Pigni, A.J.Plompen, B.Pritychenko, V.G.Pronyaev, D.Roubtsov, D.Rochman, P.Romano, P.Schillebeeckx, S.Simakov, M.Sin, I.Sirakov, B.Sleaford, V.Sobes, E.S.Soukhovitskii, I.Stetcu, P.Talou, I.Thompson, S.van der Marck, L.Welser-Sherrill, D.Wiarda, M.White, J.L.Wormald, R.Q.Wright, M.Zerkle, G.Zerovnik, Y.Zhu

ENDF/B-VIII.0: The 8 th Major Release of the Nuclear Reaction Data Library with CIELO-project Cross Sections, New Standards and Thermal Scattering Data

COMPILATION Z=1-118; compiled, analyzed decay data, Maxwellian averaged neutron capture σ, neutron-induced fission σ.

NUCLEAR REACTIONS 1,2H, 3He, 6,7Li, 9Be, 10,11B, 12,13C, 14,15N, 16,17,18O, 19F, 20,21,22Ne, 22,23Na, 24,25,26Mg, 26,27Al, 28,29,30,31,32Si, 31P, 32,33,34,35,36S, 35,36,37Cl, 36,37,38,39,40,41Ar, 39,40,41K, 40,41,42,43,44,45,46,47,48Ca, 45Sc, 46,47,48,49,50Ti, 49,50,51V, 50,51,52,53,54Cr, 54,55Mn, 54,55,56,57,58Fe, 58,59Co, 58,59,60,61,62,63,64Ni, 63,64,65Cu, 64,65,66,67,68,69,70Zn, 69,70,71Ga, 70,71,72,73,74,75,76Ge, 73,74,75As, 74,75,76,77,78,79,80,81,82Se, 79,80,81Br, 78,79,80,81,82,83,84,85,86Kr, 85,86,87Rb, 84,85,86,87,88,89,90Sr, 89,90,91Y, 90,91,92,93,94,95,96Zr, 93,94,95Nb, 92,93,94,95,96,97,98,99,100Mo, 98,99Tc, 96,97,98,99,100,101,102,103,104,105,106Ru, 103,104,105Rh, 102,103,104,105,106,107,108,109,110Pd, 107,108,109,110,111,112,113,114,115,116,117,118Ag, 106,107,108,109,110,111,112,113,114,115,116Cd, 113,114,115In, 112,113,114,115,116,117,118,119,120,121,122,123,124,125,126Sn, 121,122,123,124,125,126Sb, 120,121,122,123,124,125,126,127,128,129,130,121,132Te, 127,128,129,130,131,132,133,134,135I, 123,124,125,126,127,128,129,130,131,132,133,134,135,136Xe, 133,134,135,136,137Cs, 130,131,132,133,134,135,136,137,138,139,140Ba, 138,139,140La, 136,137,138,139,140,141,142,143,144Ce, 141,142,143Pr, 142,143,144,145,146,147,148,149,150Nd, 143,144,145,146,147,148,149,151Pm, 144,145,146,147,148,149,150,151,152,153,154Sm, 151,152,153,154,155,156,157Eu, 152,153,154,155,156,157,158,159,160Gd, 158,159,160,161Tb, 154,155,156,157,158,159,160,161,162,163,164Dy, 165,166Ho, 162,163,164,165,166,167,168,170,170Er, 168,169,170,171Tm, 168,169,170,171,172,173,174,175,176Yb, 175,176Lu, 174,175,176,177,178,179,180,181,182Hf, 180,181,182Ta, 180,181,182,183,184,185,186W, 185,186,187Re, 184,185,186,187,188,189,190,191,192Os, 191,192,193Ir, 190,191,192,193,194,195,196,197,198Pt, 197Au, 196,197,198,199,200,201,202,203,204Hg, 203,204,205Tl, 204,205,206,207,208,209,210Pb, 209,210Bi, 208,209,210Po, 223,224,225,226Ra, 225,226,227Ac, 227,228,229,230,231,232,233,234Th, 229,230,231,232,233Pa, 230,231,232,233,234,235,236,237,238,239,240,241U, 234,235,236,237,238,239Np, 236,237,238,239,240,241,242,243,244,245,246Pu, 240,241,242,243,244Am, 240,241,242,243,244,245,246,247,248,249,250Cm, 245,246,247,248,249,250Bk, 246,247,248,249,250,251,252,253,254Cf, 251,252,253,254,255Es, 255Fm(n, γ), E=30 keV; calculated Maxwellian-averaged σ using ENDF/B-VIII.0 evaluated neutron library. Comparison with ENDF/B-VII.1 and KADONIS values.

NUCLEAR REACTIONS 227,228,229,230,231,232,233,234Th, 229,230,231,232,233Pa, 230,231,232,233,234,235,236,237,238,239,240,241U, 234,235,236,237,238,239Np, 236,237,238,239,240,241,242,243,244,245,246Pu, 240,241,242,243,244Am, 240,241,242,243,244,245,246,247,248,249,250Cm, 245,246,247,248,249,250Bk, 246,247,248,249,250,251,252,253,254Cf, 251,252,253,254,255Es, 255Fm(n, γ), (n, F), E=thermal; calculated thermal σ. Comparison with ENDF/B-VII.1, JENDL-4.0u+ and Atlas of Neutron Resonances values.

doi: 10.1016/j.nds.2018.02.001
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2018CH12      Nucl.Data Sheets 148, 189 (2018)

M.B.Chadwick, R.Capote, A.Trkov, M.W.Herman, D.A.Brown, G.M.Hale, A.C.Kahler, P.Talou, A.J.Plompen, P.Schillebeeckx, M.T.Pigni, L.Leal, Y.Danon, A.D.Carlson, P.Romain, B.Morillon, E.Bauge, F.-J.Hambsch, S.Kopecky, G.Giorginis, T.Kawano, J.Lestone, D.Neudecker, M.Rising, M.Paris, G.P.A.Nobre, R.Arcilla, O.Cabellos, I.Hill, E.Dupont, A.J.Koning, D.Cano-Ott, E.Mendoza, J.Balibrea, C.Paradela, I.Duran, J.Qian, Z.Ge, T.Liu, L.Hanlin, X.Ruan, W.Haicheng, M.Sin, G.Noguere, D.Bernard, R.Jacqmin, O.Bouland, C.De Saint Jean, V.G.Pronyaev, A.V.Ignatyuk, K.Yokoyama, M.Ishikawa, T.Fukahori, N.Iwamoto, O.Iwamoto, S.Kunieda, C.R.Lubitz, M.Salvatores, G.Palmiotti, I.Kodeli, B.Kiedrowski, D.Roubtsov, I.Thompson, S.Quaglioni, H.I.Kim, Y.O.Lee, U.Fischer, S.Simakov, M.Dunn, K.Guber, J.I.Marquez Damian, F.Cantargi, I.Sirakov, N.Otuka, A.Daskalakis, B.J.McDermott, S.C.van der Marck

CIELO Collaboration Summary Results: International Evaluations of Neutron Reactions on Uranium, Plutonium, Iron, Oxygen and Hydrogen

NUCLEAR REACTIONS 1H, 16O, 56Fe, 235,238U, 239Pu(n, X), E<20 MeV; analyzed available data; calculated σ, σ(θ), σ(θ, E).

doi: 10.1016/j.nds.2018.02.003
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2018HA31      Phys.Rev.Lett. 121, 102701 (2018)

T.Hayakawa, H.Ko, M.-K.Cheoun, M.Kusakabe, T.Kajino, M.D.Usang, S.Chiba, K.Nakamura, A.Tolstov, K.Nomoto, M.-a.Hashimoto, M.Ono, T.Kawano, G.J.Mathews

Short-Lived Radioisotope 98Tc Synthesized by the Supernova Neutrino Process

NUCLEAR REACTIONS 98Mo(ν, E)98Tc, 99Tc(ν, ν'n)98Tc, 99Ru(ν, ν'p)98Tc, E=1-9 MeV; calculated yields, abundances as a function of interior mass from the Supernova; deduced dominance the charged current reaction on 98Mo reaction.

doi: 10.1103/PhysRevLett.121.102701
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2018HE06      Nucl.Data Sheets 148, 214 (2018)

M.Herman, A.Trkov, R.Capote, G.P.A.Nobre, D.A.Brown, R.Arcilla, Y.Danon, A.Plompen, S.F.Mughabghab, Q.Jing, G.Zhigang, L.Tingjin, L.Hanlin, R.Xichao, L.Leal, B.V.Carlson, T.Kawano, M.Sin, S.P.Simakov, K.Guber

Evaluation of Neutron Reactions on Iron Isotopes for CIELO and ENDF/B-VIII.0

NUCLEAR REACTIONS 56Fe(n, X), E<20 MeV; analyzed available data; calculated σ, σ(θ), σ(θ, E).

doi: 10.1016/j.nds.2018.02.004
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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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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset14794.


2018MU17      Astrophys.J. 869, 14 (2018)

M.R.Mumpower, T.Kawano, T.M.Sprouse, N.Vassh, E.M.Holmbeck, R.Surman, P.Moller

β-delayed Fission in r-process Nucleosynthesis

doi: 10.3847/1538-4357/aaeaca
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2018NE02      Nucl.Data Sheets 148, 293 (2018)

D.Neudecker, P.Talou, T.Kawano, A.C.Kahler, M.C.White, T.N.Taddeucci, R.C.Haight, B.Kiedrowski, J.M.O'Donnell, J.A.Gomez, K.J.Kelly, M.Devlin, M.E.Rising

Evaluations of Energy Spectra of Neutrons Emitted Promptly in Neutron-induced Fission of 235U and 239Pu

NUCLEAR REACTIONS 235U, 239Pu(n, F)1NN, E<20 MeV; analyzed available data; deduced σ(E), total kinetic energies.

doi: 10.1016/j.nds.2018.02.006
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2018OK05      J.Nucl.Sci.Technol.(Tokyo) 55, 1 (2018)

S.Okumura, To.Kawano, P.Jaffke, P.Talou, S.Chiba

235U(n, f) Independent fission product yield and isomeric ratio calculated with the statistical Hauser-Feshbach theory

NUCLEAR REACTIONS 235U(n, F), E thermal; calculated Independent fission product yield and isomeric ratio using statistical Hauser-Feshbach theory.

doi: 10.1080/00223131.2018.1467288
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2018TA05      Eur.Phys.J. A 54, 9 (2018)

P.Talou, R.Vogt, J.Randrup, M.E.Rising, S.A.Pozzi, J.Verbeke, M.T.Andrews, S.D.Clarke, P.Jaffke, M.Jandel, T.Kawano, M.J.Marcath, K.Meierbachtol, L.Nakae, G.Rusev, A.Sood, I.Stetcu, C.Walker

Correlated prompt fission data in transport simulations

COMPILATION 235U, 239Pu(n, F), E=thermal;252Cf(SF); compiled average prompt fission neutron multiplicity vs fragment mass, prompt fission neutron σ(En), γ-decay energy spectrum σ(Eγ), γ multiplicity, n-n angular correlation. Calculated σ, yields using FREYA and CGMF codes. Compared with data.

doi: 10.1140/epja/i2018-12455-0
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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
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2327.


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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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.


2017BE33      Phys.Rev.Lett. 119, 222504 (2017)

G.F.Bertsch, T.Kawano

Exit-Channel Suppression in Statistical Reaction Theory

NUCLEAR REACTIONS 235U(n, F), (n, γ), E=10 keV; analyzed available data; deduced exit channel branching ratios.

doi: 10.1103/PhysRevLett.119.222504
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2017GH09      Phys.Rev. C 96, 044604 (2017); Erratum Phys.Rev. C 99, 059901 (2019)

I.Gheorghe, H.Utsunomiya, S.Katayama, D.Filipescu, S.Belyshev, K.Stopani, V.Orlin, V.Varlamov, T.Shima, S.Amano, S.Miyamoto, Y.-W.Lui, T.Kawano, S.Goriely

Photoneutron cross-section measurements in the 209Bi (γ, xn) reaction with a new method of direct neutron-multiplicity sorting

NUCLEAR REACTIONS 209Bi(γ, n), (γ, np), (γ, 2n), (γ, 2np), (γ, 3n), (γ, 3np), (γ, 4n), (γ, 4np), E=threshold-40 MeV; measured E(n), I(n), photoneutron σ(E) using quasimonochromatic laser Compton-scattering (LCS) γ-ray beams at the NewSUBARU synchrotron radiation facility at the University of Hyogo, and novel technique of direct neutron-multiplicity sorting method. Comparison with previous experimental data from Livermore and Saclay, and with bremsstrahlung data, and with theoretical calculations using the TALYS reaction code. Comparison with Hartree-Fock Bogoliubov plus quasiparticle random phase approximation (HFB+QRPA) with Gogny D1M interaction for both E1 and M1 components of the GDR. Discussed threshold behavior of photoneutron emission in terms of average neutron kinetic energy.

doi: 10.1103/PhysRevC.96.044604
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetK2556.


2017KR09      Phys.Rev. C 96, 044623 (2017)

Krishichayan, M.Bhike, W.Tornow, A.P.Tonchev, T.Kawano

Accurate 238U (n, 2n) 237U reaction cross-section measurements from 6.5 to 14.8 MeV

NUCLEAR REACTIONS 238U(n, 2n)237U, E=6.34, 6.89, 7.40, 7.87, 8.38, 8.89, 9.40, 9.91, 10.41, 10.92, 11.42, 11.93, 12.43, 13.60, 14.10, 14.8 MeV; 197Au(n, 2n)196Au, E=9.91, 10.41, 10.92, 11.42, 11.93, 12.43, 13.60, 14.10, 14.80 MeV; 27Al(n, α)24Na, E=6.34, 6.89, 7.40, 7.87, 8.38, 8.89, 9.40 MeV; measured Eγ, Iγ, σ(E) by activation method at the FN Tandem Accelerator of the Triangle Universities Nuclear Laboratory (TUNL). 237U, 196Au, 24Na; measured half-lives of the decays of the ground states from γ-decay curves, and compared with literature values. Comparison of cross section data with previous measurements, evaluated data in ENDF/B-VIII.b4, JEFF-3.2, JENDL-4.0, BROND-2.2, CENDL-3.1, ROSFOND-2010, Zolotarev and Zhou You-Pu libraries, and with Hauser-Feshbach model based theoretical calculation.

doi: 10.1103/PhysRevC.96.044623
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset14482.


2017MU13      Phys.Rev. C 96, 024612 (2017)

M.R.Mumpower, T.Kawano, J.L.Ullmann, M.Krticka, T.M.Sprouse

Estimation of M1 scissors mode strength for deformed nuclei in the medium- to heavy-mass region by statistical Hauser-Feshbach model calculations

NUCLEAR REACTIONS 152,154,155,156,157,158Gd(n, γ), E=1 keV-4.5 MeV; calculated capture σ(E) with and without M1 scissors mode strength, capture γ-ray spectra, and compared with available experimental data. A=90-200; calculated capture cross sections at 200 keV with and without M1 scissors mode strength, and compared with evaluated cross sections in ENDF/B-VII.1 and JENDL-4 libraries; deduced additional M1 strength for nuclei in the fission product region nuclei required to reproduce evaluated capture cross section. A=50-250; calculated average photon width Γγ and compared with values in RIPL-3 database. Z=10-100, N=10-180; evaluated M1 enhancement of neutron capture reaction rates at a temperature of 1.0 GK. A=100-250; deduced isotopic abundances with the inclusion of M1 enhancement in the neutron capture rates relevant to r-process simulations. Impact of M1 scissors mode on neutron capture cross sections. Hauser-Feshbach calculation with a simple Lorentzian form for the M1 scissors mode.

doi: 10.1103/PhysRevC.96.024612
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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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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.


2016FO21      Phys.Rev. C 94, 044608 (2016)

N.Fotiades, M.Devlin, R.O.Nelson, T.Kawano, J.J.Carroll

Feeding of Rh and Ag isomers in fast-neutron-induced reactions

NUCLEAR REACTIONS 103Rh, 109Ag(n, n'γ), (n, 2nγ), (n, 3nγ), E<90 MeV; measured Eγ, Iγ using GEANIE array for γ-ray detection and the broad-spectrum pulsed neutron source of the LANSCE-WNR facility. 101,102,103Rh, 107,108,109Ag; deduced levels, J, π, absolute γ-ray cross sections as function of incident neutron energy, sums of cross sections and compared with evaluated data in ENDF/B-VII.1, 103Rh, 109Ag(n, γ), (n, n'), (n, 2n), (n, 3n), (n, 4n), (n, 5n), (n, p), (n, np), (n, 2np), (n, 3np), (n, d), (n, nd), (n, 2nd), (n, 3nd), (n, α), (n, nα), (n, 2nα), (n, 3nα), (n, t), (n, nt), (n, 2nt), E=6-44 MeV; calculated production cross sections for various reaction channels using the code CoH3.

doi: 10.1103/PhysRevC.94.044608
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset14461.


2016KA29      Phys.Rev. C 94, 014612 (2016)

T.Kawano, R.Capote, S.Hilaire, P.Chau Huu-Tai

Statistical Hauser-Feshbach theory with width-fluctuation correction including direct reaction channels for neutron-induced reactions at low energies

NUCLEAR REACTIONS 238U(n, n'), E<4 MeV; calculated reaction σ(E) with the Engelbrecht and Weidenmuller (EW) transformation, and compared with the modified transmission calculation and with the evaluated cross sections in JENDL-4, ratios of calculated capture, total inelastic, and fission cross sections. Statistical Hauser-Feshbach calculations based on Gaussian orthogonal ensemble (GOE) model in the diagonalized space, and Monte Carlo technique for sampling the S matrix.

doi: 10.1103/PhysRevC.94.014612
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2016MU16      Phys.Rev. C 94, 064317 (2016)

M.R.Mumpower, T.Kawano, P.Moller

Neutron-γ competition for β delayed neutron emission

RADIOACTIVITY 70Co, 86Ga, 93As, 107Tc, 145Cs(β-), (β-n); calculated delayed neutron and γ spectra, Pn, neutron-γ competition in β daughter nuclei. Z=10-90, N=10-150(β-n); calculated average number of neutrons emitted after single β decay. Coupled quasiparticle random phase approximation and Hauser-Feshbach (QRPA+HF) model for delayed particle emission.

doi: 10.1103/PhysRevC.94.064317
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2016TA24      Phys.Rev. C 94, 064613 (2016)

P.Talou, T.Kawano, I.Stetcu, J.P.Lestone, E.McKigney, M.B.Chadwick

Late-time emission of prompt fission γ rays

NUCLEAR REACTIONS 235U, 239Pu(n, F), E=thermal; 252Cf(SF); calculated average prompt fission γ-ray spectrum, average prompt γ-ray multiplicity as a function of time, energy spectra of late fission γ rays emitted in the 10 ns to 2 μs time window following fission, cumulative average prompt total γ-ray energy and multiplicity as a function of time, pre-neutron-emission fission fragment mass yields. Hauser-Feshbach formalism using the Monte Carlo Hauser-Feshbach code CGMF. Comparison with experimental data. 134Te; γ-ray spectrum for 162-ns isomer decay in the 10-100 ns coincidence window gated on the post-neutron-emission 134Te fission fragment.

RADIOACTIVITY 252Cf(SF); see keywords above for Nuclear Reactions

doi: 10.1103/PhysRevC.94.064613
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2015CA01      Nucl.Data Sheets 123, 27 (2015)

A.D.Carlson, V.G.Pronyaev, R.Capote, G.M.Hale, F.-J.Hambsch, T.Kawano, S.Kunieda, W.Mannhart, R.O.Nelson, D.Neudecker, P.Schillebeeckx, S.Simakov, D.L.Smith, P.Talou, X.Tao, A.Wallner, W.Wang

Recent Work Leading Towards a New Evaluation of the Neutron Standards

NUCLEAR REACTIONS H, C(n, n), 3He(n, p), 6Li(n, t), 10B(n, α), (n, αγ), Au(n, γ), 235,238U(n, F), E<20 MeV; analyzed available data; deduced neutron σ standards.

doi: 10.1016/j.nds.2014.12.006
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2015FO08      Phys.Rev. C 91, 064614 (2015)

N.Fotiades, M.Devlin, R.C.Haight, R.O.Nelson, S.Kunieda, T.Kawano

α and 2p2n emission in fast neutron-induced reactions on 60Ni

NUCLEAR REACTIONS 60Ni(n, α), (n, nα), (n, 2nα), (n, 3nα), (n, 2n2p), (n, 3n2p), (n, 4n2p), (n, 5n2p), E=1-250 MeV; measured Eγ, Iγ, partial Eγ σ(E) using Germanium Array for Neutron-Induced Excitations (GEANIE) at Los Alamos Neutron Science Center's (LANSC) Weapons Neutron Research facility. 54,55,56,57Fe; deduced levels, J, π. Comparison with Hauser-Feshbach plus pre-equilibrium reaction model calculations using GNASH and CoH3 computer codes. Comparison with previous experimental σ data for 16O, 48Ti, 92Mo(n, α), (n, nα), 51V(p, pα), E=1-150 MeV.

doi: 10.1103/PhysRevC.91.064614
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset14359.


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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2015KA48      Phys.Rev. C 92, 044617 (2015)

T.Kawano, P.Talou, H.A.Weidenmuller

Random-matrix approach to the statistical compound nuclear reaction at low energies using the Monte Carlo technique

doi: 10.1103/PhysRevC.92.044617
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2015KA57      Eur.Phys.J. A 51, 164 (2015)

T.Kawano

Challenges beyond Hauser-Feshbach for nuclear reaction modeling

doi: 10.1140/epja/i2015-15164-2
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2015KU03      Nucl.Data Sheets 123, 159 (2015)

S.Kunieda, T.Kawano, M.Paris, G.M.Hale, K.Shibata, T.Fukahori

Covariance of Neutron Cross Sections for 16O through R-matrix Analysis

NUCLEAR REACTIONS 16O(n, X), E<5 MeV; calculated σ and covariances. R-matrix analysis, comparison with available data.

doi: 10.1016/j.nds.2014.12.028
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2015MA60      Phys.Rev. C 92, 054304 (2015)

D.A.Matters, N.Fotiades, J.J.Carroll, C.J.Chiara, J.W.McClory, T.Kawano, R.O.Nelson, M.Devlin

New transitions and feeding of the Jπ = (8+) isomer in 186Re

NUCLEAR REACTIONS 187Re(n, 2n), E=10-25 MeV; measured Eγ, Iγ, nγ-, γγ-coin, time-of-flight for neutrons, excitation functions using GEANIE array at LANL-Neutron Science Center Weapons Neutron Research facility. 186Re; deduced levels, J, π, improved energy of the long-lived (8+) isomer in 186Re. Comparison with previous experimental results, and with COH 3.4 and TALYS 1.6 calculations.

doi: 10.1103/PhysRevC.92.054304
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset14438.


2015MU12      Phys.Rev. C 92, 035807 (2015)

M.R.Mumpower, R.Surman, D.-L.Fang, M.Beard, P.Moller, T.Kawano, A.Aprahamian

Impact of individual nuclear masses on r-process abundances

NUCLEAR STRUCTURE Z=30-75, N=60-130, A=120-210; calculated relevant Q values, neutron capture rates, photodissociation rates, β-decay rates, and β-delayed neutron emission probabilities using the 2012 version of the Finite-Range Droplet Model (FRDM), and by considering variations of individual nuclear masses; deduced influence of uncertainties in individual masses on the r-process abundance distribution.

doi: 10.1103/PhysRevC.92.035807
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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
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2015NE08      Nucl.Instrum.Methods Phys.Res. A791, 80 (2015)

D.Neudecker, P.Talou, T.Kawano, D.L.Smith, R.Capote, M.E.Rising, A.C.Kahler

Evaluation of the 239Pu prompt fission neutron spectrum induced by neutrons of 500 keV and associated covariances

NUCLEAR REACTIONS 239Pu(n, F), E=500 keV; analyzed available data; deduced σ(E) and its covariances. Comparison with ENDF/B-VII.1 evaluated nuclear library.

doi: 10.1016/j.nima.2015.04.044
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2015TA10      J.Phys.(London) G42, 034025 (2015)

P.Talou, T.Kawano, M.B.Chadwick, D.Neudecker, M.E.Rising

Uncertainties in nuclear fission data

NUCLEAR REACTIONS 235U, 239Pu(n, F), E<20 MeV; analyzed available data; deduced fission fragment yields, prompt fission neutrons and γ-rays, average prompt fission neutron spectrum (PFNS), σ uncertainties. Comparison with ENDF/B-VII.0 library.

doi: 10.1088/0954-3899/42/3/034025
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2014BE23      Nucl.Data Sheets 120, 194 (2014)

M.G.Bertolli, T.Kawano, H.Little

Uncertainties in Hauser-Feshbach Neutron Capture Calculations for Astrophysics

NUCLEAR REACTIONS 135I(n, γ), E<100 keV; calculated σ and its Hauser-Feshbach uncertainties. CoH3 code, comparison with available data.

doi: 10.1016/j.nds.2014.07.044
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2014CH24      Nucl.Data Sheets 118, 1 (2014)

M.B.Chadwick, E.Dupont, E.Bauge, A.Blokhin, O.Bouland, D.A.Brown, R.Capote, A.Carlson, Y.Danon, C.De Saint Jean, M.Dunn, U.Fischer, R.A.Forrest, S.C.Frankle, T.Fukahori, Z.Ge, S.M.Grimes, G.M.Hale, M.Herman, A.Ignatyuk, M.Ishikawa, N.Iwamoto, O.Iwamoto, M.Jandel, R.Jacqmin, T.Kawano, S.Kunieda, A.Kahler, B.Kiedrowski, I.Kodeli, A.J.Koning, L.Leal, Y.O.Lee, J.P.Lestone, C.Lubitz, M.MacInnes, D.McNabb, R.McKnight, M.Moxon, S.Mughabghab, G.Noguere, G.Palmiotti, A.Plompen, B.Pritychenko, V.Pronyaev, D.Rochman, P.Romain, D.Roubtsov, P.Schillebeeckx, M.Salvatores, S.Simakov, E.Sh.Soukhovitskii, J.C.Sublet, P.Talou, I.Thompson, A.Trkov, R.Vogt, S.van der Marck

The CIELO Collaboration: Neutron Reactions on 1H, 16O, 56Fe, 235, 238U, and 239Pu

COMPILATION 1H, 16O, 56Fe, 235,238U, 239Pu(n, x), E≈0-20 MeV; analyzed available data on σ, neutron multiplicity, criticality using ENDF/B-VII.1, JENDL-4.0, JEFF-3.1, ROSFOND 2010, CENDL-3.1, EAF-2010 evaluated nuclear libraries, Atlas of Neutron Resonances, Neutron Cross Section Standards evaluations; deduced recommendations for CIELO library, parameters, Maxwellian-averaged, thermal, californium σ, Westcott factors, resonance integrals. Compared with available data.

doi: 10.1016/j.nds.2014.04.002
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2014DU08      Nucl.Data Sheets 120, 264 (2014)

E.Dupont, M.B.Chadwick, Y.Danon, C.De Saint Jean, M.Dunn, U.Fischer, R.A.Forrest, T.Fukahori, Z.Ge, H.Harada, M.Herman, M.Igashira, A.Ignatyuk, M.Ishikawa, O.Iwamoto, R.Jacqmin, A.C.Kahler, T.Kawano, A.J.Koning, L.Leal, Y.O.Lee, R.McKnight, D.McNabb, R.W.Mills, G.Palmiotti, A.Plompen, M.Salvatores, P.Schillebeeckx

Working Party on International Nuclear Data Evaluation Cooperation (WPEC)

doi: 10.1016/j.nds.2014.07.063
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2014FO14      Nucl.Data Sheets 119, 124 (2014)

N.Fotiades, M.Devlin, R.C.Haight, T.Kawano, S.Kunieda, R.O.Nelson

Measurements of Partial γ-ay Cross Sections in 60Ni(n, xnypzαγ) Reactions

NUCLEAR REACTIONS 60Ni(n, xnypzα), E=1-100 MeV[neutrons from W(p, n), E=800 MeV]; measured discrete γ rays using Ge spectrometer GEANIE. 51Cr, 54Mn, 55,56Fe, 57,58,59Co, 58,59,60Ni deduced σ to discrete levels. 60Ni calculated σ to discrete levels using GNASH.

doi: 10.1016/j.nds.2014.08.035
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset14359.


2014KA28      Nucl.Data Sheets 118, 183 (2014)

T.Kawano, P.Talou

Numerical Simulations for Low Energy Nuclear Reactions to Validate Statistical Models

doi: 10.1016/j.nds.2014.04.032
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2014KU13      Nucl.Data Sheets 118, 250 (2014)

S.Kunieda, T.Kawano, M.Paris, G.Hale, K.Shibata, T.Fukahori

R-matrix Analysis for n +16O Cross-sections up to En=6.0 MeV with Covariances

NUCLEAR REACTIONS 16O(n, α), E=0.5-4.7 MeV;13C(α, n), E=0.7-4.7 MeV; calculated σ using multi-channel R-matrix with care for covariances; deduced resonances. Compared to ENDF/B-VII.1 and Harisopulos data.

doi: 10.1016/j.nds.2014.04.050
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2014NE05      Nucl.Data Sheets 118, 353 (2014)

D.Neudecker, P.Talou, T.Kawano, F.Tovesson

Advanced Uncertainty Quantification For Fission Observables

NUCLEAR REACTIONS 237Np(n, F), E=0.5-20 MeV; evaluated σ, σ uncertainties; deduced correlation matrix, influence of correlations.

doi: 10.1016/j.nds.2014.04.078
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2014NE06      Nucl.Data Sheets 118, 364 (2014)

D.Neudecker, R.Fruhwirth, T.Kawano, H.Leeb

Adequate Treatment of Correlated Experimental Data in Nuclear Data Evaluations Avoiding Peelle's Pertinent Puzzle

NUCLEAR REACTIONS 237Np(n, F), E=35-200 MeV; evaluated σ using two different estimates of covariance matrix. Compared to data.

doi: 10.1016/j.nds.2014.04.081
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2014PA47      Nucl.Data Sheets 118, 596 (2014)

G.Palmiotti, M.Salvatores, G.Aliberti, M.Herman, S.D.Hoblit, R.D.McKnight, P.Oblozinsky, P.Talou, G.M.Hale, H.Hiruta, T.Kawano, C.M.Mattoon, G.P.A.Nobre, A.Palumbo, M.Pigni, M.E.Rising, W.-S.Yang, A.C.Kahler

Combined Use of Integral Experiments and Covariance Data

doi: 10.1016/j.nds.2014.04.145
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2014ST13      Nucl.Data Sheets 118, 230 (2014)

I.Stetcu, P.Talou, T.Kawano, M.Jandel

Angular Momentum Distribution of Fission Fragments

NUCLEAR REACTIONS 235U(n, F), E=thermal; calculated prompt γ multiplicity distribution. 83Se, 90Rb, 119,121,123Cd, 123,125In, 127,128Sn, 130Sb, 131,133Te, 135Xe, 138Cs calculated isomeric ratios (isomeric yield ratios); deduced parameters.

doi: 10.1016/j.nds.2014.04.044
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2014ST17      Phys.Rev. C 90, 024617 (2014)

I.Stetcu, P.Talou, T.Kawano, M.Jandel

Properties of prompt-fission γ rays

NUCLEAR REACTIONS 235U, 239Pu(n, F), E=thermal; 235U(n, F), E=5.5 MeV; calculated prompt γ and neutron average energy and multiplicity as function of fragment mass, prompt γ multiplicity distributions, β and p parameters, prompt γ-ray energy spectrum. Monte Carlo Hauser-Feshbach (MCHF) approach. Comparison with experimental data.

RADIOACTIVITY 252Cf(SF); calculated average prompt γ spectrum and multiplicity as a function of fragment mass, prompt γ multiplicity distribution. Monte Carlo Hauser-Feshbach (MCHF) approach. Comparison with experimental data.

doi: 10.1103/PhysRevC.90.024617
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2014TA15      Nucl.Data Sheets 118, 195 (2014)

P.Talou, T.Kawano, I.Stetcu

Prompt Fission Neutrons and γ Rays

RADIOACTIVITY 252Cf(SF); calculated prompt fission multiplicity, neutron multiplicity vs fission fragment mass, γ-ray multiplicity, γ energy spectrum using Monte Carlo approach to statistical HF theory. Compared to data.

doi: 10.1016/j.nds.2014.04.035
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2014TA16      Nucl.Data Sheets 118, 227 (2014)

P.Talou, T.Kawano, I.Stetcu, R.Vogt, J.Randrup

Monte Carlo Predictions of Prompt Fission Neutrons and Photons: a Code Comparison

RADIOACTIVITY 252Cf(SF); calculated neutron, γ average kinetic energy, neutron multiplicity, γ multiplicity from different fission fragments. Compared with

doi: 10.1016/j.nds.2014.04.043
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2014UL01      Phys.Rev. C 89, 034603 (2014)

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

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

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

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


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

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

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

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

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


2013BE02      Phys.Rev. C 87, 014617 (2013)

B.Becker, P.Talou, T.Kawano, Y.Danon, I.Stetcu

Monte Carlo Hauser-Feshbach predictions of prompt fission γ rays: Application to nth+235U, nth+239Pu, and 252Cf(sf)

NUCLEAR REACTIONS 235U, 239Pu(n, F), E=thermal; calculated ratio of neutron emission for light and heavy fragments as function of heavy fragment mass, neutron emission probability as function of excitation energy and different spin values of 146Ba, average initial fragment spin and energy, average and total neutron multiplicity, average prompt fission neutron spectrum, average center-of-mass energy of prompt fission neutrons, average Eγ and γ multiplicity, prompt fission γ spectrum and multiplicity. Monte Carlo Hauser-Feshbach model. Comparison with experimental data, and with other model calculations.

RADIOACTIVITY 252Cf(SF); calculated average center-of-mass energy of prompt fission neutrons, average prompt fission neutron and γ spectra, average Eγ, and multiplicity, total Eγ, average prompt fission γ multiplicity, γ multiplicity distribution. Monte Carlo Hauser-Feshbach model. Comparison with experimental data, and with other model calculations.

doi: 10.1103/PhysRevC.87.014617
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2013BO14      Phys.Rev. C 87, 064607 (2013)

M.S.Boswell, S.R.Elliott, D.V.Perepelitsa, M.Devlin, N.Fotiades, R.O.Nelson, T.Kawano, V.E.Guiseppe

Neutron inelastic scattering in natural Cu as a background in neutrinoless double-β decay experiments

NUCLEAR REACTIONS 63,65Cu(n, n'), (n, 2n), E=0.2-800 MeV; measured Eγ, Iγ for 119 γ rays, γ-ray production σ(E) and level σ(E) by activation technique using GEANIE spectrometer at LANSC facility. Natural Cu target. GEANT4 simulations of γ-ray spectra and total σ(E) and compared with experimental data for benchmarking of background events in double β decay experiments. Comparison with statistical model calculations and with evaluated data library ENDF/B-VII. Estimated γ-ray production σ of 16 γ rays in Cu isotopes for E(n)=2.897-4.196 MeV which are potential background lines in 0νββ decay experiments for 48Ca, 76Ge, 84Se, 96Zr, 100Mo, 116Cd, 130Te and 150Nd isotopes.

doi: 10.1103/PhysRevC.87.064607
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset14370.


2013KA29      Nucl.Phys. A913, 51 (2013)

T.Kawano, P.Talou, I.Stetcu, M.B.Chadwick

Statistical and evaporation models for the neutron emission energy spectrum in the center-of-mass system from fission fragments

NUCLEAR REACTIONS 93Nb(n, n'), E=14 MeV;138Xe(n, n'), E*=15 MeV; calculated σ(En). 235,238U(n, F), E=thermal; calculated fission fragments distribution of E*, prompt σ(En) from light and heavy fission fragments. Haser-Feshbach CGM code. Compared with available data.

doi: 10.1016/j.nuclphysa.2013.05.020
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2013RI06      Nucl.Sci.Eng. 175, 81 (2013)

M.E.Rising, P.Talou, T.Kawano, A.K.Prinja

Evaluation and Uncertainty Quantification of Prompt Fission Neutron Spectra of Uranium and Plutonium Isotopes

NUCLEAR REACTIONS 229,230,231,232,233,234,235,236,237,238U, 235,236,237,238,239,240,241,242Pu(n, F), E thermal; analyzed available data; deduced prompt fission neutron spectrum parameters.

doi: 10.13182/NSE12-34
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2013ST23      Phys.Rev. C 88, 044603 (2013)

I.Stetcu, P.Talou, T.Kawano, M.Jandel

Isomer production ratios and the angular momentum distribution of fission fragments

NUCLEAR REACTIONS 235U(n, F), E=thermal; calculated prompt γ multiplicity distribution, prompt γ-ray spectrum for different values of α parameter; 235U(n, F)83Se/90Rb/119Cd/123Cd/123In/125In/127Sn/128Sn/130Sb/131Te/133Te/135Xe/138Cs, E=thermal; calculated isomer production ratios as function of initial angular momentum of the fission fragments, initial spin distributions; compared with experimental data obtained from DANCE facility at LANSCE. 235U(n, F)69Zn/71Zn/71Ge/73Ge/75Ge/77Ge/77Se/79Se/81Se/83Se/85Sr/90Br/99Nb/109Pd/115Cd/121Sn/123Sn/125Sn/127Sn/131Te/133Xe/135Xe/137Ce/139Ce/138Cs/197Hg, E=thermal; calculated isomer production ratios; deduced dependence of isomer ratios on low-lying discrete spectra of fragments; compared with available experimental data in literature. Monte-Carlo method of Hauser-Feshbach formalism for deexcitation of primary fragments after scission using GGMF computer code.

doi: 10.1103/PhysRevC.88.044603
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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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2012DI07      Phys.Rev. C 85, 044611 (2012)

F.S.Dietrich, I.J.Thompson, T.Kawano

Target-state dependence of cross sections for reactions on statically deformed nuclei

NUCLEAR REACTIONS 233,235,238U, 239Pu, 165Ho, 169Tm, 170Yb, 20Ne(n, X), E<20 MeV; calculated compound nucleus formation cross section for ground and excited states of different K quantum numbers, cross section ratios for adiabatic to nonadiabatic approximations. Coupled-channels calculations. Application to transmission coefficients in Hauser-Feshbach calculations.

doi: 10.1103/PhysRevC.85.044611
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2012JA16      Phys.Rev.Lett. 109, 202506 (2012)

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

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

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

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


2012KU15      Phys.Rev. C 85, 054602 (2012)

S.Kunieda, R.C.Haight, T.Kawano, M.B.Chadwick, S.M.Sterbenz, F.B.Bateman, O.A.Wasson, S.M.Grimes, P.Maier-Komor, H.Vonach, T.Fukahori, Y.Watanabe

Measurement and model analysis of (n, xα) cross sections for Cr, Fe, 59Co, and 58, 60Ni from threshold energy to 150 MeV

NUCLEAR REACTIONS Cr, Fe, 59Co, 58,60Ni(n, xα), E=threshold-150 MeV; measured Eα, Iα, energy loss, σ(E) at WNR facility of LANSCE; analyzed model parameters; α formation factors, angle-integrated spectra, cross section. Statistical decay and pre-equilibrium reaction models, and clustering exciton model. Discussed uncertainties in nuclear level densities in statistical decay calculation. Comparison with previous studies.

doi: 10.1103/PhysRevC.85.054602
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset14136.


2012MA23      Phys.Rev. C 85, 064614 (2012)

S.MacMullin, M.Boswell, M.Devlin, S.R.Elliott, N.Fotiades, V.E.Guiseppe, R.Henning, T.Kawano, B.H.LaRoque, R.O.Nelson, J.M.O'Donnell

Partial γ-ray production cross sections for (n, xnγ) reactions in natural argon at 1-30 MeV

NUCLEAR REACTIONS Ar(n, xnγ)39Ar/40Ar, E=1-30 MeV; measured Eγ, Iγ, E(n), time-of-flight, partial γ-ray σ(E) for six excited states in 40Ar and two excited states in 39Ar, elastic and inelastic neutron scattering cross sections. GEANIE array at LANSCE facility. Comparison with calculations using TALYS and CoH3 reaction codes. Relevance to identification of potential backgrounds in neutrinoless double-β decay, dark matter and WIMP experiments.

doi: 10.1103/PhysRevC.85.064614
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset14341.


2012MA59      Phys.Rev. C 86, 067601 (2012)

S.MacMullin, M.Boswell, M.Devlin, S.R.Elliott, N.Fotiades, V.E.Guiseppe, R.Henning, T.Kawano, B.H.LaRoque, R.O.Nelson, J.M.O'Donnell

Neutron-induced γ-ray production cross sections for the first excited-state transitions in 20Ne and 22Ne

NUCLEAR REACTIONS 20,22Ne(n, n), (n, n'), E=1-100 MeV; measured Eγ, Iγ using GEANIE array at LANSCE facility; deduced σ for population of first 2+ and 4+ states in 20,22Ne, σ for elastic to γ-ray production channel. Comparison with TALYS and CoH3 calculations.

doi: 10.1103/PhysRevC.86.067601
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset14352.


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