Vol. 12, issue 01, article # 6

Abstract:

This paper presents some results of numerical simulations of the photoexcitation and glow of a spherical barium cloud illuminated with sunlight. It is shown that when the initial optical depth of a neutral cloud exceeds 10, radiation transfer in one atomic (553.5 nm) and three ion (455.4, 493.4, and 614.2 nm) lines should be taken into account. The data obtained indicate that the processes of radiation transfer have a strong effect on the spatial distribution of ions in different states, on the angular dependence of the intensity of scattered radiation, and on the shape of the glow lines.