NSR Query Results
Output year order : Descending NSR database version of April 26, 2024. Search: Author = A.J.Sierk Found 51 matches. 2018JA05 Phys.Rev. C 97, 034608 (2018) P.Jaffke, P.Moller, P.Talou, A.J.Sierk Hauser-Feshbach fission fragment de-excitation with calculated macroscopic-microscopic mass yields NUCLEAR REACTIONS 235U, 239Pu(n, F), E=thermal; calculated pre-neutron-emission mass yields using various data sources in the three-Gaussian parametrization, average prompt neutron energy, average prompt γ-ray multiplicity, and average γ-ray energy, prompt neutron multiplicity distribution, correlation between average total kinetic energy of the fragments (TKE) and the average prompt neutron multiplicity, and normalized prompt fission neutron and γ spectra (PFNS, PFGS). Hauser-Feshbach statistical model with input mass yields from macroscopic-microscopic models of the potential energy surface for fragment mass yields, and emission of prompt neutrons and γ rays. Comparison with experimental data, and evaluations in ENDF/B-VIII.0.
doi: 10.1103/PhysRevC.97.034608
2017MA14 Phys.Rev. C 95, 034613 (2017) S.G.Mashnik, L.M.Kerby, K.K.Gudima, A.J.Sierk, J.S.Bull, M.R.James Production of energetic light fragments in extensions of the CEM and LAQGSM event generators of the Monte Carlo transport code MCNP6 NUCLEAR REACTIONS 27Al(p, 6Li), E=200 MeV; 16O(p, 14C), (p, 7Be), E not given; 9Be(p, 6Li), (p, 7Be), E=190 MeV; 12C(p, α), E=1.2, 1.9, 2.5 GeV; Ag(p, 6Li), E=480 MeV; 9Be(48Ca, X), E=140 MeV/nucleon; 12C(14N, n), E=400 MeV/nucleon; 181Ta(p, t), E=400 GeV; 197Au(40Ar, X), E=137 MeV/nucleon; 20Ne, 208Pb(20Ne, X), E=800 MeV/nucleon; 197Au(p, X), E=1.2, 1.9 GeV; 197Au(197Au, 12C), E=400 MeV/nucleon; Ni(p, 7Li), E=1.2 GeV; 209Bi(n, t), E=317 MeV; Cu(γ, p), E=300 MeV; 56Fe(π+, n), E=1.5 GeV; 197Au(p, X), E=800 MeV; 209Bi(n, F), E=20-1000 MeV; 197Au(p, 7Li), E=1.2 GeV; Ni(p, t), (p, 7Li), E=2.5 GeV; calculated double differential σ and elemental σ for A=1-28 fragment production in reactions induced by pions, gammas, nucleons, and heavy ions at incident energies of 10 MeV/nucleon to 1 TeV/nucleon. Monte-Carlo event generators cascade-exciton model (CEM), and the Los Alamos version of the quark-gluon string model (LAQGSM) in MCNP6 transport model. Comparison with experimental data.
doi: 10.1103/PhysRevC.95.034613
2017SI21 Phys.Rev. C 96, 034603 (2017) Langevin model of low-energy fission NUCLEAR REACTIONS 233,235U, 239Pu(n, F), E=thermal; calculated pre- and post-evaporation fragment yields, average and total fragment kinetic energy distributions as a function of fragment mass number. 233,235U, 239Pu(n, F), E<6 MeV; calculated average pre-evaporation total fragment kinetic energy as a function of incident neutron energy and post-evaporation fragment yields. Classical dissipative dynamical model with a macroscopic-microscopic potential-energy model, with a solution of Langevin equations in a five-dimensional space of nuclear deformations. Comparison with experimental data, systematics and evaluated data. RADIOACTIVITY 240Pu, 252Cf(SF); calculated pre- and post-evaporation fragment yields, average and total fragment kinetic energy distribution as a function of fragment mass number. Classical dissipative dynamical model with a macroscopic-microscopic potential-energy model, with a solution of Langevin equations in a five-dimensional space of nuclear deformations. Comparison with experimental data.
doi: 10.1103/PhysRevC.96.034603
2016MO08 At.Data Nucl.Data Tables 109-110, 1 (2016) P.Moller, A.J.Sierk, T.Ichikawa, H.Sagawa Nuclear ground-state masses and deformations: FRDM(2012) NUCLEAR STRUCTURE A=16-339; calculated ground-state deformation parameters, β-decay Q-values, T1/2 and delayed neutron emission probabilities, neutron- and proton-separation energies, J, α-decay Q-value and T1/2, atomic masses. Comparison with available data.
doi: 10.1016/j.adt.2015.10.002
2015MO03 Phys.Rev. C 91, 024310 (2015) P.Moller, A.J.Sierk, T.Ichikawa, A.Iwamoto, M.Mumpower Fission barriers at the end of the chart of the nuclides NUCLEAR STRUCTURE Z=60-130, N=90-230, A=171-330; calculated fission-barrier heights, saddle-point energies for 5239 nuclei between the proton and neutron drip lines. 171Nd; calculated shape at saddle point. 298Hs; calculated potential energy surface contour in (ϵ2, γ) plane. Macroscopic-microscopic finite-range liquid-drop model with a 2002 set of macroscopic-model parameters.
doi: 10.1103/PhysRevC.91.024310
2014KE03 Nucl.Data Sheets 118, 316 (2014) L.M.Kerby, S.G.Mashnik, A.J.Sierk Preequilibrium Emission of Light Fragments in Spallation Reactions NUCLEAR REACTIONS 12C(p, α), (p, Be), (p, Li), (p, B), E=70 MeV; calculated σ(Eout, θ=600) using CEM03.03F. Compared to data. 9Be(p, 6Li), (p, 7Be), E=190, 300 MeV;27Al(p, 6Li), E=200 MeV;Ni(p, 7Li), (p, 7Be), E=1200 MeV; calculated σ(Eout, θ) using CEM03.03F. Compared to data.
doi: 10.1016/j.nds.2014.04.068
2014MA39 Nucl.Data Sheets 118, 320 (2014) S.G.Mashnik, A.J.Sierk, R.E.Prael MCNP6 Fission Cross Section Calculations at Intermediate and High Energies NUCLEAR REACTIONS 165Ho(p, F), E=100-3000 MeV;181Ta(p, F), E=80-500000 MeV;209Bi(n, F), E=30-1000 MeV;209Bi(γ, F), E=400-2800 MeV;235U(γ, F), E=20-4000 MeV; calculated fission σ using CEM03.03. Compared to data and other calculations.
doi: 10.1016/j.nds.2014.04.069
2014MA41 Nucl.Data Sheets 118, 326 (2014) MCNP6 Study of Fragmentation Products from 112Sn+112Sn and 124Sn+124Sn at 1 GeV/A NUCLEAR REACTIONS 112Sn(112Sn, x), E=1 GeV/A; calculated isotope production σ using MCNP6 with LAQGSM03.03 event generator. Compared to data.
doi: 10.1016/j.nds.2014.04.071
2013IC01 Phys.Rev. C 87, 054326 (2013) T.Ichikawa, P.Moller, A.J.Sierk Character and prevalence of third minima in actinide fission barriers NUCLEAR STRUCTURE 228,230,232,234,236Ra, 228,230,232,234,236,238Th, 228,230,232,234,236U, 234,236Pu; calculated depth and height of triple-humped fission barriers, third (hyperdeformed) minima. Folded-Yukawa single particle potential in a macroscopic-microscopic model.
doi: 10.1103/PhysRevC.87.054326
2012IC01 Phys.Rev. C 86, 024610 (2012) T.Ichikawa, A.Iwamoto, P.Moller, A.J.Sierk Contrasting fission potential-energy structure of actinides and mercury isotopes NUCLEAR STRUCTURE 178,180,182,184,186,188,190,192,194,196,198,200Hg, 236U; calculated potential-energy surfaces as function of quadrupole moment, saddle points, barrier heights and the ridge heights for fission. Asymmetric fission. Effect of shell structure of fission fragments. Macroscopic-microscopic approach, finite-range liquid-drop model (FRLDM).
doi: 10.1103/PhysRevC.86.024610
2012MO02 At.Data Nucl.Data Tables 98, 149 (2012) P.Moller, A.J.Sierk, R.Bengtsson, H.Sagawa, T.Ichikawa Nuclear shape isomers NUCLEAR STRUCTURE A=31-120; calculated potential-energy surfaces, deformations and all energy minima, shape isomers near 208Pb.
doi: 10.1016/j.adt.2010.09.002
2012MO04 Phys.Rev. C 85, 024306 (2012) P.Moller, J.Randrup, A.J.Sierk Calculated fission yields of neutron-deficient mercury isotopes RADIOACTIVITY 180Tl(EC); calculated Gamow-Teller β-strength function, T1/2. Comparison with experimental data. 174,176,178,180,182,184,186,188Hg(SF); calculated fragment mass yields. Method of Brownian shape motion. NUCLEAR STRUCTURE 174,180,188Hg; calculated potential-energy surfaces, energy minima, saddles, major valleys, major ridges. Brownian shape motion (Metropolis) treatment.
doi: 10.1103/PhysRevC.85.024306
2012VE06 Phys.Rev. C 86, 024308 (2012) M.Veselsky, A.N.Andreyev, S.Antalic, M.Huyse, P.Moller, K.Nishio, A.J.Sierk, P.Van Duppen, M.Venhart Fission-barrier heights of neutron-deficient mercury nuclei RADIOACTIVITY 178,180Tl(β+), (EC); analyzed beta-delayed fission probability. 178,180Hg; deduced fission barrier heights using four alternative β-decay strength functions and four variants of the statistical model. 180Hg; calculated level densities, fission widths.
doi: 10.1103/PhysRevC.86.024308
2011RA27 Phys.Rev. C 84, 034613 (2011) J.Randrup, P.Moller, A.J.Sierk Fission-fragment mass distributions from strongly damped shape evolution NUCLEAR REACTIONS 239Pu(n, F)240Pu, E=8-14 MeV; 234,236U(n, F)235U/236U, E=8-14 MeV; 234U(γ, F)234U, E=8-14 MeV; 222,224,226,228Th(γ, F)222Th/224Th/226Th/228Th, E=8-14 MeV; calculated fission fragment mass and charge yields, comparison with experimental data. Random walks on a five-dimensional potential energy surface within the framework of the Smoluchowski equation of motion. NUCLEAR STRUCTURE 222,224,226,228Th, 240Pu; calculated fission fragment mass and charge distributions. 222Th; calculated contours of three shapes relevant to fission, and the most probable symmetric fragment division in 111Rh isotope.
doi: 10.1103/PhysRevC.84.034613
2010AN13 Phys.Rev.Lett. 105, 252502 (2010) A.N.Andreyev, J.Elseviers, M.Huyse, P.Van Duppen, S.Antalic, A.Barzakh, N.Bree, T.E.Cocolios, V.F.Comas, J.Diriken, D.Fedorov, V.Fedosseev, S.Franchoo, J.A.Heredia, O.Ivanov, U.Koster, B.A.Marsh, P.Van den Bergh, J.Van De Walle, K.Nishio, R.D.Page, N.Patronis, M.Seliverstov, I.Tsekhanovich, M.Venhart, S.Vermote, M.Veselsky, C.Wagemans, T.Ichikawa, A.Iwamoto, P.Moller, A.J.Sierk New Type of Asymmetric Fission in Proton-Rich Nuclei RADIOACTIVITY 180Tl(α), (β+), (EC) [from U(p, X), E=1.4 GeV]; measured fission fragments, Eα, Iα, X-rays. 180Hg; deduced asymetric fission fragment distribution, branching ratio for β-delayed fission.
doi: 10.1103/PhysRevLett.105.252502
2010CH41 Nucl.Data Sheets 111, 2923 (2010) M.B.Chadwick, T.Kawano, D.W.Barr, M.R.Mac Innes, A.C.Kahler, T.Graves, H.Selby, C.J.Burns, W.C.Inkret, A.L.Keksis, J.P.Lestone, A.J.Sierk, P.Talou Fission Product Yields from Fission Spectrum n+239Pu for ENDF/B-VII.1 NUCLEAR REACTIONS 239Pu(n, F)99Mo/95Zr/140Ba/144Ce/147Nd, E=0.2-2 MeV; measured fission products; deduced fission product yields and its energy dependence. Comparison with ENDF/B-VII.0 library, LANL-ILRR measurements.
doi: 10.1016/j.nds.2010.11.003
2009MO18 Phys.Rev. C 79, 064304 (2009) P.Moller, A.J.Sierk, T.Ichikawa, A.Iwamoto, R.Bengtsson, H.Uhrenholt, S.Aberg Heavy-element fission barriers NUCLEAR STRUCTURE Z=90-99, A=225-256; calculated double-humped fission barrier energies, first and second saddle heights, and fission-isomer energies. Z=78-125, N=91-188, A=171-312; calculated fission barrier heights for 1585 nuclides. 232Th; calculated proton and neutron single particle levels at saddles for symmetric and asymmetric fission modes. 228Th, 236U, 243Am, 252Cf, 278Nh, 305125; calculated potential energy surfaces. 232Th, 238,239,241,242,243Am; calculated fission-barrier structures and Fermi-gas level density parameters. Macroscopic-microscopic finite-range liquid-drop model. RADIOACTIVITY 236U, 232,240Pu, 222,224,230Cm, 224,230Cf, 226,252,258Fm, 277Cn(α)(SF); calculated α-decay and SF decay half-lives. 180Tl, 188Bi, 192,194,196At, 228Np, 232,234Am, 238,240Bk, 242,244,246,248Es, 246,248,250Md(EC); calculated Q-values and fission barriers in the daughter nuclides. Macroscopic-microscopic finite-range liquid-drop model calculations. Comparisons with experimental data.
doi: 10.1103/PhysRevC.79.064304
2009MO27 Phys.Rev.Lett. 103, 212501 (2009) P.Moller, A.J.Sierk, R.Bengtsson, H.Sagawa, T.Ichikawa Global Calculation of Nuclear Shape Isomers NUCLEAR STRUCTURE A=31-290; calculated potential energy surfaces; 70,72,74,76,78Kr, 180Hg, 186Pb, 208Pb; deduced deformations, shape isomerism.
doi: 10.1103/PhysRevLett.103.212501
2005IC01 Phys.Rev. C 71, 044608 (2005) T.Ichikawa, A.Iwamoto, P.Moller, A.J.Sierk Barrier for cold-fusion production of superheavy elements NUCLEAR REACTIONS 208Pb(48Ca, X), (50Ti, X), (54Cr, X), (58Fe, X), (62Ni, X), (64Ni, X), (70Zn, X), (74Ge, X), (76Ge, X), 209Bi(58Fe, X), (64Ni, X), (70Zn, X), E not given; calculated fusion barrier energies, deformation effects. Comparisons with data.
doi: 10.1103/PhysRevC.71.044608
2005MB02 J.Nucl.Radiochem.Sci. 6, No 2, A1 (2005) S.G.Mashnik, M.I.Baznat, K.K.Gudima, A.J.Sierk, R.E.Prael CEM03 and LAQGSM03: Extension of the CEM2k+GEM2 and LAQGSM Codes to Describe Photo-Nuclear Reactions at Intermediate Energies (30 MeV to 1.5 GeV) NUCLEAR REACTIONS 1H(γ, π0), (γ, 2π0), (γ, π+), (γ, π+π-), (γ, π0π+), (γ, X), 2H(γ, n), E ≈ 1-10000 MeV; calculated σ, σ(θ). 12C, 16O, 27Al, 40Ca, 63Cu, 108Ag, 118Sn, 181Ta, 197Au, 208Pb, 232Th, 238U(γ, X), E ≈ 1-10000 MeV; calculated total photoabsorption σ. 197Au, 208Pb, 209Bi, 232Th, 233,235,238U, 237Np(γ, F), E ≈ 1-10000 MeV; calculated photofission σ. C, 64Cu(γ, pX), E ≈ 200-300 MeV; calculated proton spectra, σ(θ). C, Ca, Sn, Pb(γ, π+X), E=213 MeV; calculated pion spectra, σ(θ). 197Au(γ, X), E=1 GeV bremsstrahlung; calculated fragments isotopic yields. Improved cascade-exciton model, quark-gluon string model, comparisons with data.
2004IW02 Nucl.Phys. A738, 499 (2004) A.Iwamoto, T.Ichikawa, P.Moller, A.J.Sierk Cluster expression in fission and fusion in high-dimensional macroscopic-microscopic calculations NUCLEAR STRUCTURE 272Ds; calculated fission potential energy surfaces. NUCLEAR REACTIONS 208Pb(64Ni, X), E not given; calculated collision surface energy vs projectile deformation.
doi: 10.1016/j.nuclphysa.2004.04.096
2004MO06 Phys.Rev.Lett. 92, 072501 (2004) P.Moller, A.J.Sierk, A.Iwamoto Five-Dimensional Fission-Barrier Calculations from 70Se to 252Cf NUCLEAR STRUCTURE 70,76Se, 90,94,98Mo, 198Hg, 210,212Po, 228Ra, 228,230,232,234Th, 232,234,236,238,240U, 236,238,240,242,244,246Pu, 242,244,246,248,250Cm, 250,252Cf; calculated fission barrier parameters. Macroscopic-microscopic model, comparison with previous results.
doi: 10.1103/PhysRevLett.92.072501
2004MO38 Prog.Theor.Phys.(Kyoto), Suppl. 154, 21 (2004) P.Moller, A.J.Sierk, T.Ichikawa, A.Iwamoto Fission and Fusion at the End of the Periodic System NUCLEAR REACTIONS 208Pb(50Ti, X), (70Zn, X), E not given; calculated potential energy vs separation and deformation. 208Pb(48Ca, X), (50Ti, X), (54Cr, X), (58Fe, X), (62Ni, X), (64Ni, X), (70Zn, X), (74Ge, X), (76Ge, X), E not given; calculated fusion barrier energies; deduced microscopic and deformation effects.
2002IW02 J.Nucl.Sci.Technol.(Tokyo) 39, 332 (2002) A.Iwamoto, P.Moller, D.G.Madland, A.J.Sierk Mass Division in Nuclear Fission and Isotope Effect NUCLEAR STRUCTURE 256,258Fm; calculated fission saddle point shapes; deduced mass-symmetric and mass-asymmetric modes.
doi: 10.1080/18811248.2002.9715198
2002TI06 Phys.Rev. C65, 064610 (2002) Yu.E.Titarenko, O.V.Shvedov, V.F.Batyaev, E.I.Karpikhin, V.M.Zhivun, A.B.Koldobsky, R.D.Mulambetov, S.V.Kvasova, A.N.Sosnin, S.G.Mashnik, R.E.Prael, A.J.Sierk, T.A.Gabriel, M.Saito, H.Yasuda Cross Sections for Nuclide Production in 1 GeV Proton-Irradiated 208Pb NUCLEAR REACTIONS 208Pb(p, X), E=1 GeV; measured fragments isotopic production σ. Comparison with results from inverse reactions, model predictions.
doi: 10.1103/PhysRevC.65.064610
2001MO13 Nature(London) 409, 785 (2001) P.Moller, D.G.Madland, A.J.Sierk, A.Iwamoto Nuclear Fission Modes and Fragment Mass Asymmetries in a Five-Dimensional Deformation Space NUCLEAR STRUCTURE 228Ra, 234U, 256,258Fm; calculated potential energy surfaces; deduced fission mode features. 220,222,224,226,228,230,232Th, 228,230,232,234,236,238,240U, 234,236,238,240,242,244,246Pu, 240,242,244,246,248,250,252Cm, 246,248,250,252,254,256,258Cf, 246,248,250,252,254,256,258Fm; calculated average fragment mass division in asymmetric fission. Five-dimensional shape-coordinate grid. Comparisons with data.
doi: 10.1038/35057204
2000MA08 Phys.Rev. C61, 034601 (2000) S.G.Mashnik, R.J.Peterson, A.J.Sierk, M.R.Braunstein Pion-Induced Transport of π Mesons in Nuclei NUCLEAR REACTIONS Li, C, Zr, Fe, Bi(π-, π0), E=467 MeV; C, O, 27Al, Cu, Zr, Bi, (π-, π0), E=500 MeV; C(π+, π+), E=500 MeV; C, Cu, Zr, Bi(π+, π0), E=500 MeV; C, 27Al, Cu, Zr, Sn, Bi(π-, π0), E=400 MeV; O, Fe, Sn, Pb(π+, π0), E=165 MeV; measured pion spectra, σ(θ) following single-charge-exchange, no-charge-exchange processes; deduced nuclear medium effects. Intranuclear cascade model, cascade-exciton model.
doi: 10.1103/PhysRevC.61.034601
1987SO13 Nucl.Phys. A471, 131c (1987) L.G.Sobotka, D.G.Sarantites, Ze Li, E.L.Dines, M.L.Halbert, D.C.Hensley, R.P.Schmitt, Z.Majka, G.Nebbia, H.C.Griffin, A.J.Sierk The Angular Momentum Dependence of Complex Fragment Emission NUCLEAR REACTIONS 65Cu(45Sc, X), E=200 MeV; measured σ(fragment θ), γ(fragment)-coin, γ-multiplicity; deduced fragment emission angular momentum dependence.
doi: 10.1016/0375-9474(87)90247-8
1987SO15 Phys.Rev. C36, 2713 (1987) L.G.Sobotka, D.G.Sarantites, Ze Li, E.L.Dines, M.L.Halbert, D.C.Hensley, J.C.Lisle, R.P.Schmitt, Z.Majka, G.Nebbia, H.C.Griffin, A.J.Sierk Angular Momentum Dependence of Complex Fragment Emission NUCLEAR REACTIONS 65Cu(45Sc, X), E=200 MeV; measured σ(fragment θ), (γ-multiplicity)(X)-coin; deduced angular momentum in kinetic energy partition features.
doi: 10.1103/PhysRevC.36.2713
1986CA04 Nucl.Phys. A452, 381 (1986) Effect of Dissipation on Ternary Fission in very Heavy Nuclear Systems NUCLEAR STRUCTURE A=100-300; calculated ternary fission fragment translational kinetic energy vs mass, dissipation dependence. Macroscopic dynamical model.
doi: 10.1016/0375-9474(86)90204-6
1986GA12 Phys.Lett. 176B, 312 (1986) A.Gavron, A.Gayer, J.Boissevain, H.C.Britt, J.R.Nix, A.J.Sierk, P.Grange, S.Hassani, H.A.Weidenmuller, J.R.Beene, B.Cheynis, D.Drain, R.L.Ferguson, F.E.Obenshain, F.Plasil, G.R.Young, G.A.Petitt, C.Butler Neutron Emission Prior to Fission NUCLEAR REACTIONS 142Nd(16O, F), E=207 MeV; measured fission(fragment)n-coin, σ(En, θn); deduced post, prior fission neutron multiplicity relationship. 158Er deduced fission barrier, other parameters, reduced nuclear dissipation coefficient limit.
doi: 10.1016/0370-2693(86)90170-X
1986GR09 Phys.Rev. C34, 209 (1986) P.Grange, S.Hassani, H.A.Weidenmuller, A.Gavron, J.R.Nix, A.J.Sierk Effect of Nuclear Dissipation on Neutron Emission Prior to Fission NUCLEAR REACTIONS 142Nd(16O, F), E=207 MeV; calculated neutron emission multiplicity prior to fission. 158Er deduced saddle to scission time vs reduced dissipation coefficient, Γf vs t. Bohr-Wheeler statistical model.
doi: 10.1103/PhysRevC.34.209
1986NI06 Radiat.Eff. 92, 263 (1986) J.R.Nix, D.G.Madland, A.J.Sierk Effect of Fission Dynamics on the Spectra and Multiplicities of Prompt Fission Neutrons NUCLEAR REACTIONS 235U(n, F), E=0.53 MeV; calculated prompt fission neutron spectra vs E; deduced multiple-chance fission role. Unified macroscopic-microscopic method. NUCLEAR STRUCTURE 240Pu; calculated beyond fission saddle point dynamical evolution; deduced surface plus window dissipation role. Unified macroscopic-microscopic model.
doi: 10.1080/00337578608208336
1986SI06 Phys.Rev. C33, 2039 (1986) Macroscopic Model of Rotating Nuclei NUCLEAR STRUCTURE A=30-370; calculated fission barriers, maximum angular moment, ground state moments of inertia, saddle points. 97Rh, 153Tb, 176Os, 229Np; calculated fission barriers, moment of inertia vs angular momentum. Macroscopic model.
doi: 10.1103/PhysRevC.33.2039
1985DA02 Phys.Rev. C31, 915 (1985) Conditional Saddle-Point Configurations NUCLEAR STRUCTURE 208Bi; calculated fission saddle point configuration vs fissility, mass asymmetry. Liquid drop, Yukawa plus exponential nuclear energy models.
doi: 10.1103/PhysRevC.31.915
1985SI11 Phys.Rev.Lett. 55, 582 (1985) Mass-Asymmetric Fission of Light Nuclei NUCLEAR STRUCTURE 111In; calculated mass asymmetric fission barriers vs Z; deduced model dependence. Liquid drop, finite-range models.
doi: 10.1103/PhysRevLett.55.582
1984GA03 Phys.Rev.Lett. 52, 589 (1984) A.Gavron, P.Eskola, A.J.Sierk, J.Boissevain, H.C.Britt, K.Eskola, M.M.Fowler, H.Ohm, J.B.Wilhelmy, S.Wald, R.L.Ferguson New Evaluation of Fission-Fragment Angular Distributions in Heavy-Ion Reactions NUCLEAR REACTIONS 238U(16O, F), E=114, 140, 250 MeV; 238U, 174Yb(12C, F), E=95, 188 MeV; 198Pt(12C, F), E=95, 186 MeV; 192Os, 170Er, 142Nd(16O, F), E=140, 250 MeV; measured fission fragment σ(θ), yield anisotropies; deduced well defined fission barrier, saddle point K quantum number roles. Transition state model, other data analysis.
doi: 10.1103/PhysRevLett.52.589
1984NI09 Nucl.Phys. A424, 239 (1984) J.R.Nix, A.J.Sierk, H.Hofmann, F.Scheuter, D.Vautherin Stationary Fokker-Planck Equation Applied to Fission Dynamics NUCLEAR STRUCTURE 158Yb, 213At; calculated fission barrier height, excitation energy. Stationary Fokker-Planck fission dynamics treatment. NUCLEAR REACTIONS 209Bi(α, F), E=120 MeV; calculated mean kinetic energy at scission point vs dissipation strength following fission. 150Nd(20Ne, 2n), E=176, 239 MeV; calculated saddle to scission time vs dissipation strength following residual nucleus fission. Stationary Fokker-Planck fission dynamics treatment.
doi: 10.1016/0375-9474(84)90184-2
1984NI15 Nucl.Phys. A428, 161c (1984) Dynamics of Fission and Heavy Ion Reactions NUCLEAR REACTIONS 208Pb(58Fe, X), E(cm)=238-363 MeV; calculated mass transfer vs angular momentum, capture σ vs E. 142Nd(16O, F), E=208 MeV; calculated mean saddle to scission time vs dissipation strength for fission. Unified macroscopic, microscopic description.
doi: 10.1016/0375-9474(84)90249-5
1984PL01 Phys.Rev. C29, 1145 (1984) F.Plasil, T.C.Awes, B.Cheynis, D.Drain, R.L.Ferguson, F.E.Obenshain, A.J.Sierk, S.G.Steadman, G.R.Young Angular-Momentum-Dependent Fission Barriers in the Rare-Earth Region NUCLEAR REACTIONS, ICPND 169Tm(12C, X), E=78.2, 100.8, 122.6 MeV; 159Tb(22Ne, X), E=113, 130, 161.5 MeV; measured evaporation residue production σ. 133Cs(20Ne, F), 141Pr, 169Tm(12C, F), 159Tb(22Ne, F), E not given; calculated fission σ vs excitation function. 153Tb, 181Re deduced level density parameters ratio (a(F)/a(ν)). Angular momentum dependent fission barriers, rotating liquid drop, rotating finite-range models.
doi: 10.1103/PhysRevC.29.1145
1983DA13 Phys.Rev. C28, 679 (1983) K.T.R.Davies, A.J.Sierk, J.R.Nix Dynamical Thresholds for Compound-Nucleus Formation in Symmetric Heavy-Ion Reactions NUCLEAR REACTIONS 110Pd(110Pd, X), E not given; calculated compound nucleus formation dynamical thresholds.
doi: 10.1103/PhysRevC.28.679
1982LE19 Nucl.Phys. A388, 452 (1982) G.A.Leander, R.K.Sheline, P.Moller, P.Olanders, I.Ragnarsson, A.J.Sierk The Breaking of Intrinsic Reflection Symmetry in Nuclear Ground States NUCLEAR STRUCTURE 218,220Po, 218,220,222,224,226Rn, 220,222,224,226,228,230,232,234Ra, 220,222,224,226,228,230,232,234,236Th, 222,224,226,228,230,232U; calculated potential energy minima. 223,225,227Ac, 227Ra, 229,231Th, 233Pa, 233U; calculated octupole separation energy. Intrinsic reflection symmetry breaking.
doi: 10.1016/0375-9474(82)90471-7
1980NI01 Phys.Rev. C21, 396 (1980) Macroscopic Description of Isoscalar Giant Multipole Resonances NUCLEAR STRUCTURE 208Pb; calculated energy, Γ of T=0, GMR. Distorted-Fermi-surface macroscopic model.
doi: 10.1103/PhysRevC.21.396
1980SC29 Z.Phys. A297, 289 (1980) G.Schutte, P.Moller, J.R.Nix, A.J.Sierk Fission with Microscopic Energy Dissipation RADIOACTIVITY, Fission 236U; calculated neutron, proton single particle energies, excitation of pair states, microscopic energy dissipation. Nonadiabatic BCS formalism.
1979DA03 Nucl.Phys. A315, 253 (1979) J.M.Davidson, H.L.Berg, M.M.Lowry, M.R.Dwarakanath, A.J.Sierk, P.Batay-Csorba Low Energy Cross Sections for 11B(p, 3α) NUCLEAR REACTIONS 11B(p, 3α), E=35.4-1500 keV; measured σ(E, θ). 12C 16.11-MeV resonance deduced Γ; calculated astrophysical factor S(E), thermonuclear reaction rates. Enriched targets.
doi: 10.1016/0375-9474(79)90647-X
1979KR08 Phys.Rev. C20, 992 (1979) H.J.Krappe, J.R.Nix, A.J.Sierk Unified Nuclear Potential for Heavy-Ion Elastic Scattering, Fusion, Fission, and Ground-State Masses and Deformations NUCLEAR REACTIONS 12C(α, X), 28Si(16O, X), 208Pb(84Kr, X), E not given; calculated HI interaction potential. 28Si(16O, 16O), E=37.7, 81.0, 215.2 MeV; calculated σ(θ). 27Al(32S, X), 62Ni(35Cl, X), 208Pb(16O, X); calculated compound nuclear σ, fission barrier heights, ground-state masses. Unified nuclear potential model.
doi: 10.1103/PhysRevC.20.992
1977DA16 Phys.Rev. C16, 1890 (1977) K.T.R.Davies, R.A.Managan, J.R.Nix, A.J.Sierk Rupture of the Neck in Nuclear Fission NUCLEAR STRUCTURE 252Cf, 236U; calculated fission parameters.
doi: 10.1103/PhysRevC.16.1890
1977NI02 Phys.Rev. C15, 2072 (1977) Calculation of Compound-Nucleus Cross Sections for Symmetric Very-Heavy-Ion Reactions NUCLEAR REACTIONS 100Mo(100Mo, X), 110Pd(110Pd, X), 124Sn(124Sn, X); calculated compound nucleus σ. Liquid-drop model, hydrodynamical model.
doi: 10.1103/PhysRevC.15.2072
1977SI13 Phys.Rev. C16, 1048 (1977) Effect of the Finite Range of the Nuclear Force on the Dynamics of Fission and Heavy-Ion Collisions NUCLEAR REACTIONS 150Nd(150Nd, X); calculated fission dynamics for 236U, superheavy systems.
doi: 10.1103/PhysRevC.16.1048
1976DA08 Phys. Rev. C13, 2385 (1976) K.T.R.Davies, A.J.Sierk, J.R.Nix Effect of Viscosity on the Dynamics of Fission NUCLEAR STRUCTURE 236U, 252Cf; calculated effect of viscosity on fission dynamics.
doi: 10.1103/PhysRevC.13.2385
1973SI27 Nucl.Phys. A210, 341 (1973) The 9Be(p, α) and (p, d) Cross Sections at Low Energies NUCLEAR REACTIONS 9Be(p, d), (p, α);E=30-700 keV, measured σ(E); E=100-600 keV, measured σ(E, θ). 10B deduced resonance parameters.
doi: 10.1016/0375-9474(73)90307-2
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