Spectral analysis of a thermal flare on 27 October 1993

A thermal subflare occurring on 27 October 1993 was observed during a multi -wavelength campaign with the Yohkoh spacecraft and the Multi-channel Subtr active Double-Pass spectrograph (MSDP) at Pic du Midi. The various instrume nts provided us with 2-D H alpha spectra, X-ray spectra and X-ray images. A non-LTE computation (including chromospheric condensation) was carried out to determine the dynamic parameters of the Raring chromosphere. By combini ng these results with the Yohkoh data, we illustrate that momentum is balan ced between the upflowing plasma and the downflowing cool plasma during the flare. This result is consistent with the evaporation model.