NSR Query Results
Output year order : Descending NSR database version of April 27, 2024. Search: Author = W.Sandhas Found 50 matches. 2017KO28 Few-Body Systems 58, 35 (2017) E.A.Kolganova, A.K.Motovilov, W.Sandhas The 4He Trimer as an Efimov System: Latest Developments ATOMIC PHYSICS 4He; compiled, reviewed calculations (using different potentials) and data on 2-atomic and 3-atomic entities, namely binding energy, Q, excited state energy of 3-atomic entity, bond length, scatering length.
doi: 10.1007/s00601-016-1181-2
2008BE12 Nucl.Phys. A803, 210 (2008) V.B.Belyaev, S.A.Rakityansky, W.Sandhas Three-body resonances Λnn and ΛΛn
doi: 10.1016/j.nuclphysa.2008.02.219
2007KO56 Nucl.Phys. A790, 752c (2007) E.A.Kolganova, A.K.Motovilov, W.Sandhas Ultracold scattering processes in three-atomic helium systems
doi: 10.1016/j.nuclphysa.2007.03.120
2007PE17 Bull.Rus.Acad.Sci.Phys. 71, 798 (2007); Izv.Akad.Nauk RAS, Ser.Fiz. 71, 826 (2007) System of differential equations in the momentum space for a three-body problem
doi: 10.3103/S1062873807060093
2006BE54 Nucl.Phys. A780, 100 (2006) V.B.Belyaev, N.V.Shevchenko, A.Fix, W.Sandhas Binding of charmonium with two- and three-body nuclei NUCLEAR STRUCTURE 2H, 3He; calculated charmonium binding energies.
doi: 10.1016/j.nuclphysa.2006.09.010
2003SH01 Nucl.Phys. A714, 277 (2003) N.V.Shevchenko, V.B.Belyaev, S.A.Rakityansky, S.A.Sofianos, W.Sandhas Coherent photoproduction of η-mesons on three-nucleon systems NUCLEAR REACTIONS 3H, 3He(γ, X), E=600-660 MeV; calculated η-meson production σ, sensitivity to choice of T-matrix. Finite rank approximation.
doi: 10.1016/S0375-9474(02)01368-4
2002SH07 Nucl.Phys. A699, 165c (2002) N.V.Shevchenko, V.B.Belyaev, S.A.Rakityansky, S.A.Sofianos, W.Sandhas Eta Photoproduction Off Three Body Nuclei NUCLEAR REACTIONS 3H, 3He(γ, X), E=600-660 MeV; calculated η-meson production σ. Microscopic finite rank approximation method.
doi: 10.1016/S0375-9474(01)01488-9
2001MO11 Nucl.Phys. A684, 646c (2001) A.K.Motovilov, W.Sandhas, S.A.Sofianos, E.A.Kolganova Binding Energies and Scattering Observables in the 4He3 Atomic System
doi: 10.1016/S0375-9474(01)00462-6
2001RA15 Nucl.Phys. A684, 383c (2001) S.A.Rakityansky, S.A.Sofianos, N.V.Shevchenko, V.B.Belyaev, W.Sandhas Mear-Threshold ηd Resonance
doi: 10.1016/S0375-9474(01)00402-X
2001SC16 Phys.Rev. C63, 044006 (2001) W.Schadow, O.Nohadani, W.Sandhas Photonuclear Reactions of Three-Nucleon Systems NUCLEAR REACTIONS 3H, 3He(γ, X), E=5-100 MeV; calculated photodisintegration σ, σ(θ), asymmetry. 2H(p, γ), (n, γ), E=5-40 MeV; calculated capture σ, σ(θ). Comparison with data and between various nuclear potentials.
doi: 10.1103/PhysRevC.63.044006
2001SH30 Nucl.Phys. A689, 383c (2001) N.V.Shevchenko, V.B.Belyaev, S.A.Rakityansky, S.A.Sofianos, W.Sandhas Photoproduction of η-Mesons Off Light Nuclei NUCLEAR REACTIONS 2H(γ, X), E=625-655 MeV; calculated η meson production σ, σ(θ); deduced reaction mechanism features. Alt-Grassberger-Sandhas formalism, comparisons with data.
doi: 10.1016/S0375-9474(01)00860-0
2001SO10 Nucl.Phys. A684, 464c (2001) S.A.Sofianos, G.Ellerkmann, W.Sandhas The 4He(e, e'p)3H Reaction at High Missing Momenta NUCLEAR REACTIONS 4He(e, e'p), E not given; calculated σ(E, θ); deduced reaction mechanism features. Comparison with data.
doi: 10.1016/S0375-9474(01)00506-1
2000SC27 Few-Body Systems 28, 241 (2000) W.Schadow, W.Sandhas, J.Haidenbauer, A.Nogga Comparison of Triton Bound-State Properties using Different Separable Representations of Realistic Nucleon-Nucleon Potentials NUCLEAR STRUCTURE 3H; calculated binding energies, wave functions. Separable expansion methods compared.
doi: 10.1007/s006010070023
2000SH39 Eur.Phys.J. A 9, 143 (2000) N.V.Shevchenko, V.B.Belyaev, S.A.Rakityansky, S.A.Sofianos, W.Sandhas Low-Energy ηd-Resonance
doi: 10.1007/s100500070064
1999BR13 Phys.Rev. C59, 2396 (1999) M.Braun, L.L.Howell, S.A.Sofianos, W.Sandhas Model Calculations for the Two-Fragment Electro-Disintegration of 4He NUCLEAR REACTIONS 4He(e, e'p), E=525, 560 MeV; calculated σ(E, θ(e), θ(p)) vs missing momentum; deduced reaction mechanism features. Comparison with data.
doi: 10.1103/PhysRevC.59.2396
1999SC03 Phys.Rev. C59, 607 (1999) Radiative Capture of Protons by Deuterons NUCLEAR REACTIONS 2H(p, γ), E not given; calculated σ(E), σ(θ). Several potentials compared. Comparison with data.
doi: 10.1103/PhysRevC.59.607
1998BE16 Nucl.Phys. A631, 720c (1998) V.B.Belyaev, D.E.Monakhov, N.Shevchenko, S.A.Sofianos, S.A.Rakityansky, M.Braun, L.L.Howell, W.Sandhas Nuclear Fusion Via Triple Collisions in Solar Plasma
doi: 10.1016/S0375-9474(98)00098-0
1998MO13 Nucl.Phys. A635, 257 (1998) D.E.Monakhov, V.B.Belyaev, S.A.Sofianos, S.A.Rakityansky, W.Sandhas Triple Collisions e-p 7Be in Solar Plasma NUCLEAR REACTIONS 7Be(p, X)8B, E not given; calculated electron-associated triple collision reaction rate, temperature dependence. Adiabatic approximation.
doi: 10.1016/S0375-9474(98)00174-2
1998SA14 Nucl.Phys. A631, 210c (1998) W.Sandhas, W.Schadow, G.Ellerkmann, L.L.Howell, S.A.Sofianos Photodisintegration of Three- and Four- Nucleon Systems NUCLEAR REACTIONS 3H(γ, n), E=5-40 MeV; 2H(p, γ), E=12.1 MeV; analyzed σ(θ). 4He(γ, n), E=20-35 MeV; 4He(γ, p), E < 170 MeV; analyzed total σ. Several models compared.
doi: 10.1016/S0375-9474(98)00024-4
1998SC14 Nucl.Phys. A631, 588c (1998) Triton Photodisintegration with Realistic Potentials NUCLEAR REACTIONS 3H(γ, n), E=5-40 MeV; calculated σ(θ); deduced E2 contributions. Ernst-Shakin-Thaler expansion. Comparison with data.
doi: 10.1016/S0375-9474(98)00072-4
1998SH34 Phys.Rev. C58, R3055 (1998) N.V.Shevchenko, S.A.Rakityansky, S.A.Sofianos, V.B.Belyaev, W.Sandhas Faddeev-Type Calculation of ηd Threshold Scattering NUCLEAR STRUCTURE 2H; calculated ηd scattering length; deduced possible resonance or quasibound state. Exact few-body equations.
doi: 10.1103/PhysRevC.58.R3055
1998SI32 Phys.Lett. 442B, 43 (1998) D.A.Sims, J.-O.Adler, J.R.M.Annand, G.I.Crawford, K.G.Fissum, K.Hansen, D.G.Ireland, L.Isaksson, S.McAllister, M.Lundin, J.C.McGeorge, B.Nilsson, H.Ruijter, A.Sandell, W.Sandhas, B.Schroder, S.A.Sofianos The 4He(γ, n) Reaction: A potential testing ground for the alpha-particle wavefunction NUCLEAR REACTIONS 4He(γ, n), E=50-71 MeV; measured σ(E, θ); deduced reaction mechanism features, sensitivity to bound state wave functions. Alt-Grassberger-Sandhas formalism. Tagged-photon facility.
doi: 10.1016/S0370-2693(98)01219-2
1997SC04 Phys.Rev. C55, 1074 (1997) Photodisintegration of the Triton with Realistic Potentials NUCLEAR REACTIONS 3H(γ, n), E ≈ 5-40 MeV; analyzed photodisintegration σ(θ) vs E. Three-body integral equations, subsystem amplitudes W-matrix representation in kernel.
doi: 10.1103/PhysRevC.55.1074
1996BE27 J.Phys.(London) G22, 1111 (1996) V.B.Belyaev, A.K.Motovilov, W.Sandhas Fusion Reactions in Molecules Via Nuclear Threshold Resonances NUCLEAR STRUCTURE 18Ne; calculated 1- level excitation in p+p+16O; deduced decay to 17F+p, related features. Fusion reactions in molecules via threshold nuclear resonances.
doi: 10.1088/0954-3899/22/7/016
1996EL04 Phys.Rev. C53, 2638 (1996) G.Ellerkmann, W.Sandhas, S.A.Sofianos, H.Fiedeldey Integral Equation Calculations for the Photodisintegration Process 4He(γ, n)3He NUCLEAR REACTIONS 4He(γ, n), E ≤ 100 MeV; calculated σ(E). 4He(γ, p), E ≤ 100 MeV; calculated σ(θ), σ(E). Integral equation approach.
doi: 10.1103/PhysRevC.53.2638
1996RA13 Phys.Rev. C53, R2043 (1996) S.A.Rakityansky, S.A.Sofianos, M.Braun, V.B.Belyaev, W.Sandhas Quasibound States of η-Nucleus Systems NUCLEAR REACTIONS 2,3H, 3,4He(X, X), E not given; calculated η-scattering associated amplitudes, poles related features.
doi: 10.1103/PhysRevC.53.R2043
1995RA23 Phys.Lett. 359B, 33 (1995) S.A.Rakityansky, S.A.Sofianos, W.Sandhas, V.B.Belyaev Threshold Scattering of the η-Meson Off Light Nuclei NUCLEAR REACTIONS 2,3H, 4He(X, X), E=low; calculated η-meson scattering lengths. Coherent approximation, few-body equations.
doi: 10.1016/0370-2693(95)01057-W
1993GE05 Nucl.Phys. A561, 232 (1993) K.Gebhardt, W.Jager, C.Jeitner, M.Vitz, E.Finckh, T.N.Frank, Th.Januschke, W.Sandhas, H.Haberzettl Experimental and Theoretical Investigation of the 2H(n, nnp) Reaction and of the Neutron-Neutron Scattering Length NUCLEAR REACTIONS 2H(n, np), E=10.3 MeV; measured σ(Ep, En1, En2, θ1, φ1, θ2, φ2); deduced neutron-neutron final-state interaction, scattering length. Faddeev calculation with charge-dependent modification of the Paris potential. Kinematically overdetermined experiment, C6D12 target.
doi: 10.1016/0375-9474(93)90152-N
1993JA06 Phys.Rev. C47, 1401 (1993) Th.Januschke, T.N.Frank, W.Sandhas, H.Haberzettl Neutron-Deuteron Scattering Calculations with the Paris Potential using the W-Matrix Representation of the Two-Body Input NUCLEAR REACTIONS 2H(polarized n, n), 1n(polarized d, d), E ≈ 10 MeV; calculated polarization observables. Alt-Grassberger-Sandhas approach, W-matrix representation of two-body input.
doi: 10.1103/PhysRevC.47.1401
1993SO08 Yad.Fiz. 56, No 7, 5 (1993); Phys.Atomic Nuclei 56, 859 (1993) S.A.Sofianos, H.Fiedeldey, W.Sandhas Integral and Integrodifferential-Equation Approach to Helium Photodisintegration NUCLEAR REACTIONS 4He(γ, p), (γ, n), E=21-34 MeV; calculated photodisintegration σ(E); deduced no resonance structure. Integral, integrodifferential equation approaches.
1993SO11 Phys.Rev. C48, 2285 (1993) S.A.Sofianos, H.Fiedeldey, W.Sandhas Photodisintegration of 4He in the Integrodifferential Equation Approach NUCLEAR REACTIONS 4He(γ, n), (γ, p), E=20-60 MeV; analyzed σ(E). Integrodifferential approach.
doi: 10.1103/PhysRevC.48.2285
1990SL02 Nucl.Phys. A515, 57 (1990) I.Slaus, M.B.Epstein, T.E.Mdlalose, H.Fiedeldey, W.Sandhas Proton-Induced Break-Up of 3He at 35 MeV NUCLEAR REACTIONS 3He(p, 2p), (p, pd), E=35 MeV; measured σ(θ1, θ2, E2), σ(θp, Ep, θd); deduced reaction mechanism. Model comparison.
doi: 10.1016/0375-9474(90)90322-D
1989VO08 Phys.Rev. C40, 1923 (1989) Chr.von Ferber, W.Sandhas, H.Haberzettl Calculating Deuteron Photodisintegration Amplitudes using Nonsingular Scattering Equations NUCLEAR REACTIONS 2H(γ, np), (polarized γ, np), E=20, 50, 100 MeV; calculated σ(θ), asymmetry vs θ. Linearly polarized beam.
doi: 10.1103/PhysRevC.40.1923
1988FR17 Phys.Rev. C38, 1112 (1988) T.N.Frank, H.Haberzettl, Th.Januschke, U.Kerwath, W.Sandhas Neutron-Deuteron Breakup Calculations with W-Matrix Representation of the Two-Body Input NUCLEAR REACTIONS 2H(n, np), E=13 MeV; calculated σ(θ1, θ2) vs arc length. W-matrix method.
doi: 10.1103/PhysRevC.38.1112
1988MD01 Nucl.Phys. A480, 215 (1988) T.E.Mdlalose, H.Fiedeldey, W.Sandhas Deuteron on Deuteron Break-Up in Regions Characterized by Competing Mechanisms NUCLEAR REACTIONS, MECPD 2H(d, nd), E=19.8-36 MeV; calculated σ(θp, θd, Ep); deduced final state interactions role.
doi: 10.1016/0375-9474(88)90394-6
1987BA67 Phys.Rev. C36, 1678 (1987) E.A.Bartnik, H.Haberzettl, Th.Januschke, U.Kerwath, W.Sandhas Neutron-Deuteron Scattering Calculations with W-Matrix Representation of the Two-Body Input NUCLEAR STRUCTURE 3H; calculated binding energy; deduced parameter dependence. W-matrix representation. NUCLEAR REACTIONS 2H(n, n), E ≤ 50 MeV; calculated phase shifts. 2H(n, n), E=2.45, 46.3 MeV; calculated σ(θ). W-matrix representation.
doi: 10.1103/PhysRevC.36.1678
1986CA05 Czech.J.Phys. B36, 300 (1986) Photodisintegration of 4He including Exchange Currents NUCLEAR REACTIONS 4He(γ, p), E ≈ 10-140 MeV; 4He(γ, n), E=50-110 MeV; calculated σ(θ); deduced final state interaction, meson exchange current effects role. Alt-Grassberger-Sandhas integral equation approach.
doi: 10.1007/BF01597163
1986MD01 Phys.Rev. C33, 784 (1986) T.E.Mdlalose, H.Fiedeldey, W.Sandhas Four-Body Calculation of the Breakup Reaction 3He(p, pd)1H NUCLEAR REACTIONS 3H(p, pd), E=35, 45 MeV; calculated σ(θp, θd, Ep). Four-body theory, kinematically complete breakup.
doi: 10.1103/PhysRevC.33.784
1986MD02 Nucl.Phys. A457, 273 (1986) T.E.Mdlalose, H.Fiedeldey, W.Sandhas Deuteron on Deuteron 2H(d, nd)p Break-Up in the AGS Formalism NUCLEAR REACTIONS 2H(d, nd), E=52.3 MeV; calculated σ(θp, θd) vs Ed. Kinematically complete breakup.
doi: 10.1016/0375-9474(86)90377-5
1985AL23 Nucl.Phys. A445, 429 (1985); Erratum Nucl.Phys. A465, 755 (1987) E.O.Alt, W.Sandhas, H.Ziegelmann Calculation of Proton-Deuteron Phase Parameters Including the Coulomb Force NUCLEAR REACTIONS 2H(p, p), E=1-50 MeV; calculated phase shifts.
doi: 10.1016/0375-9474(85)90451-8
1985SO07 Phys.Rev. C32, 400 (1985) S.A.Sofianos, H.Fiedeldey, W.Sandhas Four-Nucleon Scattering in the K-Matrix Approach with Improved Treatment of the (2 + 2) Channels NUCLEAR REACTIONS 3He(p, p), 2H(d, p), (d, n), E=13.8-81 MeV; calculated σ(θ) above break-up threshold. K-matrix approach, improved treatment of (2+2)-subsystem amplitude, Alt-Grassberger-Sandhas equations.
doi: 10.1103/PhysRevC.32.400
1980BO13 Phys.Lett. 92B, 11 (1980) Quasiparticle Effects in the Two-Body Photodisintegration of 4He NUCLEAR REACTIONS 4He(γ, n), (γ, p), E=50-150 MeV; calculated total σ(E); deduced γ-absorption mechanism. Quasiparticle formalism.
doi: 10.1016/0370-2693(80)90291-9
1978AL22 Phys.Rev. C18, 1088 (1978) Application of the Quasiparticle Formalism to Neutron-Deuteron Scattering with Local Soft-Core Nucleon-Nucleon Potentials NUCLEAR STRUCTURE 3H; calculated binding energy. NUCLEAR REACTIONS 2H(n, n), E=2.45, 3.27 MeV; calculated σ(θ).
doi: 10.1103/PhysRevC.18.1088
1978KR01 Phys.Rev.Lett. 40, 834 (1978) Two-Dimensional Integral-Equation Solution of the Four-Nucleon System NUCLEAR REACTIONS 3H(n, n), (p, p); calculated phase shifts below d+d threshold. 4He; calculated binding energy.
doi: 10.1103/PhysRevLett.40.834
1977PE13 Phys.Rev.Lett. 39, 788 (1977) Dependence of Four-Body Observables on the Range of Effective Interactions Like Those of the Unitary Pole Approximation NUCLEAR STRUCTURE 4He; calculated binding energy. NUCLEAR REACTIONS 2H(d, p), E=13.8, 25.3, 51.5 MeV; 3H(p, p), E=31 MeV; calculated σ, influence of cutoff parameter.
doi: 10.1103/PhysRevLett.39.788
1976AL13 Phys.Rev.Lett. 37, 1537 (1976) E.O.Alt, W.Sandhas, H.Zankel, H.Ziegelmann Coulomb Corrections in Proton-Deuteron Scattering NUCLEAR REACTIONS 2H(p, p), E=2, 10 MeV; calculated σ(θ).
doi: 10.1103/PhysRevLett.37.1537
1973SA26 Acta Phys. 33, 109 (1973) Three-Nucleon Calculations with Local Potentials NUCLEAR REACTIONS 2H(n, n'); analyzed σ(θ) data.
doi: 10.1007/BF03158000
1972AL13 Nuovo Cim. 8A, 211 (1972) E.O.Alt, W.Sandhas, P.Grassberger Excited States in the Three-Body System NUCLEAR STRUCTURE 3H, 3He; calculated excited states, binding energy. Local potential model, quasiparticle method.
doi: 10.1007/BF02728764
1967AL20 Nucl.Phys. B2, 167 (1967) E.O.Alt, P.Grassberger, W.Sandhas Reduction of the three-particle collision problem to multi-channel two-particle Lippmann-Schwinger equations
doi: 10.1016/0550-3213(67)90016-8
1967GR33 Nucl.Phys. B2, 181 (1967) Systematical treatment of the non-relativistic n-particle scattering problem
doi: 10.1016/0550-3213(67)90017-X
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