Poster Session III: ATOMIC, MOLECULAR, AND OPTICAL PHYSICS (DAMOP)
Effects of dense plasmas on the K-shell energy levels and transitions of Si XI
Poster 235Atomic data for K-shell transitions plays crucial role in modelling K absorption lines, which have been observed in the spectra of active galaxies using high-resolution X-ray observatories like XMM, Chandra, and Suzaku. Accurate atomic data are also important for identifying lines and conducting spectroscopic diagnostics in laboratory plasmas generated by methods such as lasers or beam-foils. Effects of strongly coupled plasma environment on the atomic structure and radiative properties of Be-like Si XI using relativistic configuration interaction (RCI) technique by incorporating b-potential are analyzed. We studied effects of dense plasma environment on the K-shell transitions among the configurations 1s22s2, 1s22s2p, 1s2s22p, 1s2s2p2 and 1s2p3. We reported K-shell energy levels, wavelengths, decay rates and oscillator strengths of Be-like Si XI in the dense plasma environment. It is observed that transition energies for these K-shell transitions are red shifted. Present results are in good agreement with the available experimental and theoretical results. We believe that calculated results will be advantageous for the diagnostics and modelling of laboratory and astrophysical plasmas.