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Optical Model Analysis of Elastic Scattering within Low-energy Nuclear knowledge base NRV

Optical Model Analysis of Elastic Scattering within Low-energy Nuclear knowledge base NRV. Nduna Chumisani Tiniku Maluleke. Supervisor : Dr. A. Denikin. Everybody time to time does the following:. Search for available experimental data in the databases Processing and drawing these data

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Optical Model Analysis of Elastic Scattering within Low-energy Nuclear knowledge base NRV

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  1. Optical Model Analysis of Elastic Scattering within Low-energy Nuclear knowledge base NRV Nduna Chumisani Tiniku Maluleke Supervisor : Dr. A. Denikin

  2. Everybody time to time does the following: • Search for available experimental data in the databases • Processing and drawing these data • Use some graphics packages • Analysis of the experimental data • Finding appropriate theoretical model • Preparation of input data and run the code • Processing of the obtained results It requires time, resources and experience.

  3. Nuclear Data Resources in the Internet • These databases provide detailed information on their subject only. • In order to obtain complete data user needs to visit all databases. g-Ray Spectra Radium Institute, St.-Petersburg CDFE MSU, Moscow Reaction Data Database Durham, UK

  4. Solution Combination of the databases on nuclear properties and experimental cross sections of nuclear reactions along with computer codes of theoretical models in a unique system which we name the Knowledge Base on low energy nuclear physics. We named this specific software the “Nuclear Reactions Video” (NRV)

  5. Example: Optical Model for Elastic scattering in NRV For a given set of the OM model parameters the optical model code of the NRV allows one to calculate and present graphical and tabular forms all of the following quantities: • The partial waves • The partial S-Matrix elements • The total wave function in a 3-Dimensional Space and • The differential Cross Section. An automatic search of the OMP parameters can be fulfilled with a fit of the calculated elastic scattering angular distribution to the available experimental data. Many additional possibilities are also included to the Optical Model code which allows one to analyze an investigated process in detail.

  6. Nuclear Dynamics: Elastic Scattering Optical model of the elastic scattering of nuclear particles in NRV The Schrodinger equation with phenomenological Optical Potential and boundary condition at infinity (for uncharged particles) Elastic scattering cross section in general case is

  7. Results: • Get acquainted with Knowledge Base on Low energy nuclear physics – NRV http://nrv.jinr.ru/nrv/ • Study the Optical model of elastic scattering of nuclear particles and get an experience in work with NRV Optical model: • Preparation of experimental data (34S(p,p) Ep = 30 MeV) • Choice of parameters of Optical model potential • Calculation and visualization of of the following quantities: • Differential Cross Section, • S-Matrix, • OM Interaction, • Partial waves, • 3-Dimensional wave function.

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