NSR Query Results
Output year order : Descending NSR database version of April 27, 2024. Search: Author = L.W.Townsend Found 27 matches. 2016PH02 Phys.Rep. 612, 1 (2016) D.G.Phillips II, W.M.Snow, K.Babu, S.Banerjee, D.V.Baxter, Z.Berezhiani, M.Bergevin, S.Bhattacharya, G.Brooijmans, L.Castellanos, M.-C.Chen, C.E.Coppola, R.Cowsik, J.A.Crabtree, P.Das, E.B.Dees, A.Dolgov, P.D.Ferguson, M.Frost, T.Gabriel, A.Gal, F.Gallmeier, K.Ganezer, E.Golubeva, G.Greene, B.Hartfiel, A.Hawari, L.Heilbronn, C.Johnson, Y.Kamyshkov, B.Kerbikov, M.Kitaguchi, B.Z.Kopeliovich, V.B.Kopeliovich, V.A.Kuzmin, C-Y.Liu, P.McGaughey, M.Mocko, R.Mohapatra, N.Mokhov, G.Muhrer, H.P.Mumm, L.Okun, R.W.Pattie, Jr., C.Quigg, E.Ramberg, A.Ray, A.Roy, A.Ruggles, U.Sarkar, A.Saunders, A.P.Serebrov, H.M.Shimizu, R.Shrock, A.K.Sikdar, S.Sjue, S.Striganov, L.W.Townsend, R.Tschirhart, A.Vainshtein, R.Van Kooten, Z.Wang, A.R.Young Neutron-antineutron oscillations: Theoretical status and experimental prospects COMPILATION A=1; compiled experimental and theoretical information.
doi: 10.1016/j.physrep.2015.11.001
2012NO04 Radiat.Meas. 47, 315 (2012) J.W.Norbury, J.Miller, A.M.Adamczyk, L.H.Heilbronn, L.W.Townsend, S.R.Blattnig, R.B.Norman, S.B.Guetersloh, C.J.Zeitlin Nuclear data for space radiation COMPILATION Z<100; compiled elemental and isotopic σ, σ(θ), σ(θ, E).
doi: 10.1016/j.radmeas.2012.03.004
2007NO01 J.Phys.(London) G34, 115 (2007) J.W.Norbury, L.W.Townsend, R.B.Norman Threshold meson production and cosmic ray transport NUCLEAR REACTIONS 1H(p, π0X), E=290-11500 MeV; 1H(p, K+X), E=1.58-50 GeV; C(C, π0X), E=60-11500 MeV/nucleon; Ni(Ni, K+X), E=0.8-50 MeV/nucleon; analyzed pion and kaon production σ. Implications for cosmic ray transport discussed.
doi: 10.1088/0954-3899/34/1/007
2007NO03 Nucl.Instrum.Methods Phys.Res. B254, 187 (2007) Parameterized total cross sections for pion production in nuclear collisions NUCLEAR REACTIONS F, Na, Cu, Pb(Ne, π+X), (Ne, π-X), K, Cl, Pb(Ar, π+X), (Ar, π-X), C, Pb(C, π-X), Ca(Ar, π0X), Zr(Kr, π0X), Au(Au, π0X), E ≈ 0.2-2.5 GeV/nucleon; C, F, Na, K, Cl, Cu, Pb(p, π-X), E ≈ 0.2-2.5 GeV; calculated pion production σ. Comparison with data.
doi: 10.1016/j.nimb.2006.11.054
1999TO06 Nucl.Instrum.Methods Phys.Res. B149, 401 (1999) L.W.Townsend, C.R.Ramsey, R.K.Tripathi, F.A.Cucinotta, J.W.Norbury Optical Model Methods of Predicting Nuclide Production Cross Sections from Heavy Ion Fragmentation NUCLEAR REACTIONS C(40Ar, X), E=1.65 GeV/nucleon; H(36Ar, X), E=765 MeV/nucleon; calculated isotope production σ. H, C, 27Al, Cu, Pb(56Fe, X), E=1.05 GeV/nucleon; C(137La, X), E=1.2 GeV/nucleon; calculated element production σ. Optical potential abrasion-ablation-FSI fragmentation model. Comparisons with data.
doi: 10.1016/S0168-583X(98)00957-4
1998RA02 Phys.Rev. C57, 982 (1998) C.R.Ramsey, L.W.Townsend, R.K.Tripathi, F.A.Cucinotta Optical Model Methods of Predicting Nuclide Production from Spallation Reactions NUCLEAR REACTIONS, ICPND Fe(p, X), E=1.05 GeV; calculated nuclide production yields. Comparison with data. Optical potential method, abrasion-ablation model.
doi: 10.1103/PhysRevC.57.982
1997CU02 Nucl.Phys. A619, 202 (1997) F.A.Cucinotta, J.W.Wilson, L.W.Townsend Abrasion-Ablation Model for Neutron Production in Heavy Ion Collisions NUCLEAR REACTIONS 23Na, 19F(20Ne, X), E=390, 800 MeV/nucleon; Pb(20Ne, X), E=800 MeV/nucleon; 93Nb(93Nb, X), E=800 MeV/nucleon; analyzed neutron σ(E) at θ=0°; deduced contributions from abrasion, ablation stages. Comparison with experiment. Glauber model, statistical evaporation model.
doi: 10.1016/S0375-9474(97)00130-9
1994TO07 Phys.Rev. C49, 3158 (1994) Optical Model Analyses of Heavy Ion Fragmentation in Hydrogen Targets NUCLEAR REACTIONS 1H(139La, X), E=1.2 GeV/nucleon; 1H(32S, X), E=400 MeV/nucleon; calculated fragment production σ. Quantum mechanical optical model.
doi: 10.1103/PhysRevC.49.3158
1994TR02 Phys.Rev. C49, R1775 (1994) R.K.Tripathi, L.W.Townsend, F.Khan Role of Intrinsic Width in Fragment Momentum Distributions in Heavy Ion Collisions NUCLEAR REACTIONS C(40Ar, X), E=1.65 GeV/nucleon; Ag(197Au, X), E=980 MeV/nucleon; analyzed fragmentation data. Calculation of intrinsic widths with correlations.
doi: 10.1103/PhysRevC.49.R1775
1994TR03 Phys.Rev. C49, 2237 (1994) Simple Parametrization of Fragment Reduced Widths in Heavy Ion Collisions NUCLEAR REACTIONS 9Be, C, 27Al, Cu, Ag, Pb(12C, X), (16O, X), 197Au(16O, X), K, Cl, C(40Ar, X), 197Au(84Kr, X), C(93Nb, X), (139La, X), (197Au, X), Ag(197Au, X), E ≈ 0.1-2.1 GeV/nucleon; analyzed fragment reduced widths; deduced simple parametrization.
doi: 10.1103/PhysRevC.49.2237
1994TR07 Phys.Rev. C50, R7 (1994) Bose Condensation of Nuclei in Heavy Ion Collisions
doi: 10.1103/PhysRevC.50.R7
1993JO04 Phys.Rev. C48, 766 (1993) S.John, L.W.Townsend, J.W.Wilson, R.K.Tripathi Geometric Model for Nuclear Absorption from Microscopic Theory NUCLEAR REACTIONS 1H, 4He, 12C(12C, X), E ≥ 500 MeV/nucleon; calculated absorption σ(E). Geometrical model.
doi: 10.1103/PhysRevC.48.766
1992CU03 Phys.Rev. C46, 1451 (1992) F.A.Cucinotta, L.W.Townsend, J.W.Wilson Multiple-Scattering Effects in Quasielastic α-4He Scattering NUCLEAR REACTIONS 4He(α, α), E at 7 GeV/c; calculated α-particle σ(θ) vs momentum. Multiple scattering series.
doi: 10.1103/PhysRevC.46.1451
1991MA03 Phys.Rev. C43, 1378 (1991) K.M.Maung, F.Gross, J.A.Tjon, L.W.Townsend, S.J.Wallace Relativistic Proton-Nucleus Scattering and One-Boson-Exchange Models NUCLEAR REACTIONS 40Ca(polarized p, p), E=200-500 MeV; analyzed σ(θ), analyzing power, spin rotation parameter vs θ. Relativistic approach.
doi: 10.1103/PhysRevC.43.1378
1989CU05 Phys.Lett. 223B, 127 (1989) F.A.Cucinotta, G.S.Khandelwal, L.W.Townsend, J.W.Wilson Correlations in α-α Scattering and Semi-Classical Optical Models NUCLEAR REACTIONS 4He(α, α), E at 5.05, 7 GeV/c; calculated angle integrated spectra. Semi-classical optical models.
doi: 10.1016/0370-2693(89)90226-8
1989GR12 Phys.Rev. C40, R10 (1989) F.Gross, Khin Maung Maung, J.A.Tjon, L.W.Townsend, S.J.Wallace Pseudoscalar πN Coupling and Relativistic Proton-Nucleus Scattering NUCLEAR REACTIONS 40Ca(polarized p, p), E=200 MeV; measured σ(θ), analyzing power vs θ, spin rotation parameter vs θ. Relativistic approach, pseudoscalar π-nucleon coupling.
doi: 10.1103/PhysRevC.40.R10
1988TO02 Phys.Rev. C37, 892 (1988) Comment on ' Trends of Total Reaction Cross Sections for Heavy Ion Collisions in the Intermediate Energy Range ' NUCLEAR REACTIONS 27Al, 12C, 89Y(12C, X), E=30-300 MeV/nucleon; 89Y, 27Al(16O, X), E=30 MeV/nucleon; 27Al(20Ne, X), E=30, 100, 300 MeV/nucleon; Ag(20Ne, X), E=300 MeV/nucleon; calculated reaction σ. Semi-empirical, energy dependent surface transparency factor.
doi: 10.1103/PhysRevC.37.892
1986DE15 Nucl.Phys. A454, 733 (1986) P.A.Deutchman, J.W.Norbury, L.W.Townsend Theoretical Contributions to Coherent Pion Production in Subthreshold and Relativistic Heavy-Ion Collisions NUCLEAR REACTIONS 12C(16O, π), E=85, 400 MeV/nucleon; calculated coherent pion production σ.
doi: 10.1016/0375-9474(86)90115-6
1986DE34 Phys.Rev. C34, 2377 (1986) P.A.Deutchman, K.M.Maung, J.W.Norbury, J.O.Rasmussen, L.W.Townsend Δ Excitations and Shell-Model Information in Heavy-Ion, Charge-Exchange Reactions NUCLEAR STRUCTURE 12B, 12N; calculated nucleon, isobar particle states. NUCLEAR REACTIONS 12C(12C, 12B), (12C, 12N), E not given; calculated σ(θ), coherent pion production σ. Multipole expansion, harmonic oscillator.
doi: 10.1103/PhysRevC.34.2377
1986NO01 Phys.Rev. C33, 377 (1986) Theoretical Estimates of Photoproduction Cross Sections for Neutral Subthreshold Pions in Carbon-Carbon Collisions NUCLEAR REACTIONS 12C(12C, π0), E=34-300 MeV; calculated σ(E); deduced negligible photoprocess contribution to pion production.
doi: 10.1103/PhysRevC.33.377
1986TO06 Radiat.Res. 106, 283 (1986) Energy-Dependent Parameterization of Heavy-Ion Absorption Cross Sections NUCLEAR REACTIONS 12C(α, α), 12C, 16O(12C, 12C), E=0.01-10 GeV/nucleon; calculated absorption σ(E). Energy-dependent parametrization.
doi: 10.2307/3576735
1986TO10 Phys.Rev. C34, 1491 (1986) L.W.Townsend, J.W.Wilson, F.A.Cucinotta, J.W.Norbury Comparison of Abrasion Model Differences in Heavy Ion Fragmentation: Optical versus geometric models NUCLEAR REACTIONS C(40Ar, X), E=213 MeV/nucleon; calculated fragment isotope production σ for X=Ar, Si, Mg. Geometric, optical abrasion models.
doi: 10.1103/PhysRevC.34.1491
1985NO06 Phys.Rev.Lett. 55, 681 (1985) J.W.Norbury, F.A.Cucinotta, P.A.Deutchman, L.W.Townsend Theoretical Spectral Distributions and Total Cross Sections for Neutral Subthreshold Pion Production in Carbon-Carbon Collisions NUCLEAR REACTIONS 12C(12C, π0), E=20-100 MeV/nucleon; calculated pion production σ(E), spectral distribution. Particle-hole theory, coherent isobar formation, decay.
doi: 10.1103/PhysRevLett.55.681
1985TO05 Can.J.Phys. 63, 135 (1985) L.W.Townsend, J.W.Wilson, J.W.Norbury A Simplified Optical Model Description of Heavy-Ion Fragmentation NUCLEAR REACTIONS 12C(40Ar, X), E=213 MeV/nucleon; calculated production σ(A) for X=S, P, Si, Al. Abrasion-ablation fragmentation model.
doi: 10.1139/p85-021
1984TO03 Nucl.Phys. A415, 520 (1984) L.W.Townsend, P.A.Deutchman, R.L.Madigan, J.W.Norbury Pion Production via Isobar Giant Resonance Formation and Decay NUCLEAR REACTIONS 12C(16O, π+), (16O, π-), (16O, π0), E=1 GeV/nucleon; 23Na, 19F(20Ne, π+), (20Ne, π-), (20Ne, π0), E=400 MeV/nucleon; 12C(12C, π+), (12C, π-), (12C, π0), E=85 MeV/nucleon; calculated pion production σ; deduced isobar giant resonance decay role. Spin, isospin formalism.
doi: 10.1016/0375-9474(84)90316-6
1983BI01 J.Phys.(London) G9, L17 (1983) H.B.Bidasaria, L.W.Townsend, J.W.Wilson Theory of Carbon-Carbon Scattering from 200 to 290 MeV NUCLEAR REACTIONS 12C(12C, 12C), (12C, X), E=204.2, 242.7, 288.6 MeV; calculated σ(θ), σ(total), σ(reaction). Optical model, folded potentials, WKB solutions.
doi: 10.1088/0305-4616/9/1/004
1983BI12 Can.J.Phys. 61, 1660 (1983) Microscopic Optical Potential Analyses of Carbon-Carbon Elastic Scattering NUCLEAR REACTIONS 12C(12C, 12C), E=200-300 MeV; analyzed σ(E), σ(θ). Microscopic double-folding eikonal phase shifts.
doi: 10.1139/p83-218
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