Programs in Physics & Physical Chemistry |
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Manuscript Title: LPOTp: nucleon elastic-scattering from spin 0 and 1/2 nuclei in momentum space. | ||
Authors: M.J. Paez, M.E. Sagen, R.H. Landau | ||
Program title: LPOTp | ||
Catalogue identifier: ABDD_v1_0 Distribution format: gz | ||
Journal reference: Comput. Phys. Commun. 52(1988)141 | ||
Programming language: Fortran. | ||
Computer: RIDGE 32. | ||
Operating system: ROS 3.3 (UNIX SYSTEM V RELEASE 2.0). | ||
RAM: 489K words | ||
Word size: 32 | ||
Peripherals: disc. | ||
Keywords: Nuclear physics, Optical model, Schrodinger equation, Lippmann-schwinger Equation, Optical potential, Momentum space, Elastic scattering, Charge exchange Scattering, Multiple scattering, Proton, Neutron, Spin 1/2 nuclei, Sigma (theta), Sigma tot, Polarization, Asymmetry. | ||
Classification: 17.9. | ||
Nature of problem: | ||
Solution method: LPOTp calculates elastic or charge exchange scattering of nucleons from spin 0 and 1/2 nuclei by computing a momentum-space, optical potential starting with nucleon-nucleon (NN) phase shifts and nuclear matter and spin form factors. The potential is projected onto the angular-momentum basis, inserted into coupled, one-dimensional, integral equations, and the equations are solved by matrix inversion. The output is the proton- nucleus observables: all components of the spin-dependent amplitude plus differential and total cross-sections. The potential incorporates independent form factors for the matter and spin distributions of neutrons and protons, nucleon recoil and binding effects, Lorentz- invariant relations among amplitudes and kinematical variables in different reference frames, recent NN phase shifts, theoretical off- energy-shell behaviour for the NN t-matrix generated from a separable potential, and the option of removing meson-exchange-current contributions to the form factors of the three-nucleon system. |
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