Determination of the atomic structure and radiative transition properties of atoms or ions under the dense and solid density magnetized plasmas

Abstract

Simulating the magnetic field interactions with plasmas plays a paramount role in astrophysics, having significant impacts in several topics. Here, we propose a novel computational method within the framework of relativistic theory to the determination of the atomic structures and radiative properties of atoms or ions in presence of the dense and solid density magnetized plasma environments. In the method, the dense plasma effects on the atomic structure of highly charged ions are described by using the generalized b-potential model within the general framework of the ion sphere theory, which is somewhat simple and flexible and allows adjusting the b-parameter to consider finite temperature and density as well as solid density plasma environments. The weakly magnetic field effects are described using the perturbation term, which perturbs the Hamiltonian of the field-free case. Its special features include handling the effects of both electron correlation and interaction with the weakly magnetic field within the configuration interaction approximation. As a practical application, we present a systematic study of the plasma screening and magnetic field effects, separately and combined, on the structure and radiative properties of highly charged ions subjected to the magnetized plasma, using the atrophysically relevant He-like Mg10+ ion as an example. A comparison of our calculations with other theories, when available, is made. The present work not only originates a better understanding of the fundamentals of structure and radiative properties of ions in the presence of an external field, but also has some important relevance to applications in laboratory and space plasmas, particularly in solar corona, fusion, laser-produced plasmas, ect.