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NSR database version of May 19, 2024.

Search: Author = J.I.Johansson

Found 13 matches.

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2000JO04      Nucl.Phys. A665, 403 (2000)

J.I.Johansson, H.S.Sherif, F.Ghoddoussi

Orthogonality Effects in Relativistic Models of Nucleon Knockout Reactions

NUCLEAR REACTIONS 16O(γ, p), E=100, 196 MeV; 40Ca(γ, p), E=100, 300 MeV calculated overlap coefficients, σ(θ), polarisation, photon asymmetry. 16O(e, e'p), E=456 MeV; 40Ca(e, e'p), E=460 MeV; calculated momentum distribution, polarisation. Comparison with data.

doi: 10.1016/S0375-9474(99)00434-0
Citations: PlumX Metrics


1999JO06      Phys.Rev. C59, 3481 (1999)

J.I.Johansson, H.S.Sherif

Relativistic Calculations of Induced Polarization in 12C(e, e'p(pol)) Reactions

NUCLEAR REACTIONS 12C(e, e'p), E=579 MeV; calculated induced proton polarization vs missing momentum. Comparison of relativistic, nonrelativistic calculations.

doi: 10.1103/PhysRevC.59.3481
Citations: PlumX Metrics


1997JO07      Phys.Rev. C56, 328 (1997)

J.I.Johansson, H.S.Sherif

Importance of the Direct Knockout Mechanism in Relativistic Calculations (γ, p) Reactions

NUCLEAR REACTIONS 12C(γ, p), E=45-51 MeV; 12C, 11B(p, γ), E=98, 176 MeV; 10B(γ, p), E=58, 73 MeV; 16O(γ, p), E=60-361 MeV; 208Pb(γ, p), E=45, 54 MeV; analyzed σ(θ). 10B(e, e'p), E not given; analyzed momentum distribution vs missing momentum. 16O(γ, p), E=60-361 MeV; analyzed reduced σ vs missing momentum. Several models compared, relativistic calculations, direct knockout mechanism.

doi: 10.1103/PhysRevC.56.328
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1996JO15      Nucl.Phys. A605, 517 (1996)

J.I.Johansson, H.S.Sherif, G.M.Lotz

Relativistic Calculations for Photonuclear Reactions (III): A consistent relativistic analysis of the (e, e'p) and (γ, p) reactions

NUCLEAR REACTIONS 12C(e, e'p), E=481 MeV; 16O(e, e'p), E=456 MeV; 40Ca(e, e'p), E=460 MeV; 51V(e, e'p), E=461 MeV; calculated momentum distribution. 12C, 16O, 40Ca, 51V(γ, p), E=60 MeV; calculated σ(θp). Relativistic approach.

doi: 10.1016/0375-9474(96)00176-5
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1995HE06      Phys.Rev. C51, 2044 (1995)

M.Hedayati-Poor, J.I.Johansson, H.S.Sherif

Nuclear Medium Effects in the Relativistic Treatment of Quasifree Electron Scattering

NUCLEAR REACTIONS 16O(e, e'p), E=456, 2000 MeV; calculated spectral functions, proton polarization vs missing momentum. 90Zr(e, e'p), E=461 MeV; calculated asymmetry vs missing momentum.

doi: 10.1103/PhysRevC.51.2044
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1995HE26      Nucl.Phys. A593, 377 (1995)

M.Hedayati-Poor, J.I.Johansson, H.S.Sherif

Relativistic Calculations for Photonuclear Reactions (II). Nonrelativistic Reductions and Nuclear Medium Effects

NUCLEAR REACTIONS 16O(γ, p), E=312 MeV; calculated σ(θ), photon asymmetry. Relativistic amplitude to nonrelativistic form, effective Pauli reduction scheme.

doi: 10.1016/0375-9474(95)00329-Y
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1995JO05      Nucl.Phys. A581, 429 (1995)

J.I.Johansson, H.S.Sherif

A Relativistic Description of the Quasifree Radiative Pion-Capture Reaction on Nuclei

NUCLEAR REACTIONS 16O(π+, p), E=163.7 MeV; calculated σ(θp, θγ, Eγ), proton polarization. Relativistic model.

doi: 10.1016/0375-9474(94)00449-W
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1994JO05      Nucl.Phys. A575, 477 (1994)

J.I.Johansson, H.S.Sherif

A Relativistic Model for Quasifree Negative-Pion Photoproduction on Nuclei

NUCLEAR REACTIONS 12C(γ, pπ-), E ≤ 380 MeV; calculated σ(θ(π), θp, Ep), proton polarization, asymmetry. 16O(γ, pπ-), E=350 MeV; calculated σ(θ(π), θp, Ep). Relativistic model.

doi: 10.1016/0375-9474(94)90373-5
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1989RA03      Phys.Lett. 218B, 403 (1989)

J.Raynal, H.S.Sherif, A.M.Kobos, E.D.Cooper, J.I.Johansson

Dirac Coupled Channel Calculations and Nucleon Scattering at Large Momentum Transfer

NUCLEAR REACTIONS 40Ca(polarized p, p), E=800 MeV; calculated σ(θ), analyzing power vs θ. Dirac coupled-channels method.

doi: 10.1016/0370-2693(89)91435-4
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1988IQ02      Nucl.Phys. A487, 626 (1988)

M.J.Iqbal, J.I.Johansson, S.Hama, H.S.Sherif

Isovector Dirac Optical Potentials and Nucleon Charge Exchange Reactions

NUCLEAR REACTIONS 90Zr(polarized p, n), E=160 MeV; 48Ca(polarized p, n), E=134 MeV; calculated σ(θ), analyzing power. 208Pb(polarized p, n), E=134 MeV; calculated σ(θ), spin rotation parameter vs θ; deduced model parameters. Dirac optical potentials.

doi: 10.1016/0375-9474(88)90030-9
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1988JO02      Nucl.Phys. A476, 663 (1988)

J.I.Johansson, E.D.Cooper, H.S.Sherif

Relativistic DWBA Calculations for Proton Inelastic Scattering

NUCLEAR REACTIONS, MECPD 48,40Ca(polarized p, p), (polarized p, p'), E=362, 500 MeV; 20Ne, 90Zr(polarized p, p), (polarized p, p'), E=800 MeV; calculated σ(θ), A(θ), polarization transfer. Relativistic DWBA. 48,40Ca, 90Zr levels deduced deformation lengths.

doi: 10.1016/0375-9474(88)90329-6
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1987CO32      Phys.Rev. C36, 2170 (1987)

E.D.Cooper, B.C.Clark, R.Kozack, S.Shim, S.Hama, J.I.Johansson, H.S.Sherif, R.L.Mercer, B.D.Serot

Global Optical Potentials for Elastic p + 40Ca Scattering using the Dirac Equation

NUCLEAR REACTIONS 40Ca(p, p), (polarized p, p), E=400 MeV; calculated σ(θ), analyzing power, spin rotation function vs θ; deduced global model parameters. Relativistic optical model.

doi: 10.1103/PhysRevC.36.2170
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1985KO37      Nucl.Phys. A445, 605 (1985)

A.M.Kobos, E.D.Cooper, J.I.Johansson, H.S.Sherif

Phenomenological Study of Relativistic Optical Model Potentials in Proton Elastic Scattering

NUCLEAR REACTIONS 4He, 16O, 40Ca, 90Zr, 208Pb(polarized p, p), E=160-800 MeV; calculated σ(θ), analyzing power vs θ. Relativistic optical model.

doi: 10.1016/0375-9474(85)90562-7
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