Large-scale transport of plasma in the Earth's plasma sheet: comparative analysis for adiabatic and non-adiabatic cases
On November 15, 1985 a star was occulted by Comet Halley. Seven consequent spectra of the star has been obtained with 5-minute exposition with the TV scanner at 6-meter telescope. Simultaneously seven spectra of the cometary atmosphere were obtained at the projected distance 40'' from the star. A method is developed to calculate the optical thickness of the cometary atmosphere as a function of wave length and the nucleocentric distance. This function is given in the spectral range 3925 Angstroms--4850 Angstroms.