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Angela Ciaravella, J.C. Raymond, A. van Ballegooijen (Harvard-Smithsonian Center for Astrophysics), O.C. St. Cyr (Computational Physics, Inc., Fairfax, VA), S.P. Plunkett (Universities Space Research Association, Naval Research Lab.), UVCS Mission Operations Team
Since the SOHO launch spectroscopic observations of Coronal Mass Ejections have been performed with the Ultraviolet Coronagraph Spectrometer (UVCS). The data provide new insights on the physical and dynamical conditions of the ejected material which can in turn be used to put constraints on the theoretical models. Detailed diagnostics of temperatures, densities, abundances have been obtained for some events observed by UVCS. Energetics, heating and evolution during the propagation through the corona have been derived as well. The component along the line of sight can be measures from the Doppler shift of the spectral lines which together with white light observations can be used to derive a three dimensional picture of the event. We present the results of the spectroscopic analysis of a CME observed with UVCS and a comparison with LASCO white light observations. ~