Nonthermal broadening of the Fe X λ 6374 Å and Fe XIV λ 5303 Å coronal lines and its correlation with the intensity

The results of research of halfwidhts (Deltaλ) and intensities (W) of Fe X λ 6374 Å and Fe XIV λ 5303Å spectral lines using observations obtained with the Large coronagraph of the Sayan observatory in 1968-1983 show the inverse correlation between Deltaλ and W always exists for Fe X λ 6374 Å; it takes place at all latitudes at the same height as well as with height irrespectively of activity level. For Fe XIV λ 5303 Å this correlation varies from direct to inverse depending on activity level. It is shown that relation type between Deltaλ and W for different spectral lines is determined by different coronal structurednesses in these lines.