Dielectronic recombination data for dynamic finite-density plasmas XV. The silicon isoelectronic sequence

TL;DR

This paper provides comprehensive theoretical dielectronic and radiative recombination data for silicon-like ions, crucial for plasma spectral modeling, using advanced multi-configurational Breit-Pauli calculations and comparing results with existing data.

Contribution

It offers detailed DR and RR rate coefficients for 16 silicon-like ions, including new calculations and data accessible via the OPEN-ADAS database, enhancing plasma modeling capabilities.

Findings

Calculated DR and RR rate coefficients for 16 ions.

Compared theoretical results with existing data, validating accuracy.

Provided tabulated data for spectral modeling applications.

Abstract

We aim to present a comprehensive theoretical investigation of dielectronic recombination (DR) of the silicon-like isoelectronic sequence and provide DR and radiative recombination (RR) data that can be used within a generalized collisional-radiative modelling framework. Total and final-state level-resolved DR and RR rate coefficients for the ground and metastable initial levels of 16 ions between $\rm{P^{+}}$ and $\rm{Zn^{16+}}$ are determined. We carried out multi-configurational Breit-Pauli (MCBP) DR calculations for silicon-like ions in the independent processes, isolated resonance, distorted wave (IPIRDW) approximation. Both $\Delta n_c =0$ and $\Delta n_c =1$ core excitations are included using $LS$ and intermediate coupling schemes. Results are presented for a selected number of ions and compared to all other existing theoretical and experimental data. The total dielectronic and radiative recombination rate coefficients for the ground state are presented in tabulated form for easy implementation into spectral modelling codes. These data can also be accessed from the Atomic Data and Analysis Structure (ADAS) OPEN-ADAS database. This work is a part of an assembly of a dielectronic recombination database for the modelling of dynamic finite-density plasmas.