Subject: symposium in honor of Antoine Salin Dear colleagues, We are planning to organize a 3 days Scientific Workshop in honor of Antoine Salin due to his recent retirement. The idea is to have, in principle, several sessions on different hot topics of active research in the fields of gas-surface dynamics, atomic collisions in the gas and solid phase, and other related topics. We consider that, if possible, it would be nice to have every participant giving an oral presentation of 20 minutes plus 10 minutes discussion. Therefore, we still need to know the number of participants. So far, we can provide you with the following relevant information: - Date: 24th to 26th October 2005 - Place: Donostia International Physics Center (DIPC) Donostia-San Sebastian (Spain) - Tentative Title: 'Recent advances on the dynamics of atomic and molecular particles interacting with gas and solid targets'. - WARNING: SO FAR ANTOINE IS NOT BE INFORMED (IT IS A SURPRISE) We will appreciate if you can reply to this email informing us about your attendance within the next 2 weeks, so that we can have an estimate on the number of participants. Looking forwad to meeting you in San Sebastian soon. Best regards, H.F. Busnengo, C. Crespos, R. Diez Muino, and A. Arnau