The MOL-D database VAMDC node for molecular collisional and radiative processes

Abstract

The MOL-D database is a collection of collisional data and a web service within the Virtual Atomic and Molecular Data Centre (VAMDC, http://www.vamdc.eu). In this paper we report on the current stage of MOL-D development. This database and web service/interface is intended for modeling stellar atmospheres, laboratory plasmas, technological plasmas etc. For example, the data for hydrogen are important for elaboration of atmosphere models of solar and near solar type stars and for radiative transport consideration as well as for the kinetics of stellar and other astrophysical plasmas. The helium data are of interest particularly for investigation of helium-rich white dwarf atmospheres. Stage 1 of the development was done at the end of 2014 when all the existing calculated data for photodissociation cross-sections of hydrogen H+2 and helium He+2 molecular ions and the corresponding averaged thermal photodissociation cross-sections had been processed and integrated into the database. We are now beginning Stage 2 of the development of MOL-D. At the moment we are including new cross-sections and rate coefficients for processes which involve species such as HeH+, LiH+, NaH+, SiH+ that are important for exploring the interstellar medium as well as for the early universe chemistry and for modeling stellar and solar atmospheres.