Accession Number : AD0621198

Title :   THE SEQUENCE OF APPEARANCE OF LINES OF DIFFERENT ELEMENTS IN FLARES.

Descriptive Note : Solar research note,

Corporate Author : SACRAMENTO PEAK OBSERVATORY SUNSPOT N MEX

Personal Author(s) : Stepanyan,N. N.

Report Date : 1961

Pagination or Media Count : 5

Abstract : The sequence of appearance of lines of different elements in flares is studied. It is found that the brightness maximum of flares in lines of rare earths appears a few minutes later (about 5 minutes) than the maximum in lines of such metals as Mg, Fe, Al. This effect can be explained by the emission of a flare in the upper chromospheric layers reaching, with some retardation, the lower chromosphere, where the rare earths are mainly localized. (Author)

Descriptors :   (*ASTROPHYSICS, SOLAR FLARES), (*SOLAR FLARES, LINE SPECTRA), SOLAR ATMOSPHERE, RARE EARTH ELEMENTS, ULTRAVIOLET SPECTRA, VISIBLE SPECTRA

Distribution Statement : APPROVED FOR PUBLIC RELEASE