Accession Number : AD0430611


Title :   INVESTIGATION OF THE PHYSICAL CONDITIONS IN SOLAR PROTUBERANCES BY THE EMISSION LINES WITH SELF-ABSORPTION (ISSLEDOVANIE FIZICHESKIKH USLOVII V SOLNECHNYKH PROTUBERANTSAKH PO EMISSIONNYM LINIIAM S SAMOPOGLOSHCHENIEM),


Corporate Author : AMERICAN METEOROLOGICAL SOCIETY BOSTON MA


Personal Author(s) : Severnyi, A B ; Kraus, David


Report Date : Jan 1943


Pagination or Media Count : 23


Abstract : An examination is made of the problem of determining the physical conditions in protuberances on the basis of study of extra-ecliptic spectrograms of emission lines burdened with selfabsorption. Application of the proposed method to the typical bright protuberance of 19 July 1952 made it possible to find the number of Ca(+) ions in the ground state, the number of hydrogen atoms in the second quantum state, of orthohelium atoms in the 2s state, the electron density, and also to evaluate the state of ionization. The kinetic temperature of the protuberance, found from the contours of lines H sub a and H and K proved to be approaching 14,000 degrees. The possibility of the formation of a high electron temperature during the motions of protuberances is investigated. (Author)


Descriptors :   *SUN , ASTROPHYSICS , SOLAR ATMOSPHERE , SOLAR ECLIPSES , SOLAR SPECTRUM , HYDROGEN , SOLAR RADIATION , HELIUM , TEMPERATURE


Distribution Statement : APPROVED FOR PUBLIC RELEASE