Theoretical investigation of level structures for boron and its ions

In this study, energy levels, wavelengths, weighted oscillator strengths and transition probabilities for Boron atom and its ions (B I-V) have been calculated using multiconfiguration Hartree-Fock approximation which is configuration interaction method. This method allows the highly accuracy calculations. In addition, Breit-Pauli Hamiltonian are taken for relativistic corrections. In the first chapter previous works on B I-V have been given. Second chapter deals with the concept of many electrons systems, multiconfiguration Hartree-Fock method, Breit-Pauli relativistic corrections and transition probabilities. In the last chapter results obtained have been compared with the other experiments and calculations.