THE CHROMOSPHERIC NETWORK DYNAMICS AS DERIVED FROM THE ANALYSIS OF CA-II K AND HE-I 1083-NM LINES

We present results of line profile analysis of observations simultaneo usly performed around the Ca II K and He I (1083 nm) lines, using the Horizontal Spectrograph of the Vacuum Tower Telescope of NSO / SP. Fro m the spectral analysis of a 83 min long sequence of CCD spectra, we d erive some dynamical properties of the main components of the quiet ch romosphere: i) the magnetic network, ii) the cell interior. We present a whole set of amplitude spectra near 5 and 3 min periods for the two lines; K3 and He I velocity spectra extending up to 100 mHz are also considered, for the first time.