Prof. Uzi Even, Sackler School of Chemistry, Tel Aviv University Date: Jan. 14, 2007 Title: Supersonic beams and slow beams: a remarkable tool of basic science Abstract: Supersonic beams have been developed first as a tool of molecular spectroscopy. The beam produces cold and isolated molecules for spectroscopy studies with very high resolution. Recently these beams were applied to atomic cluster studies. Some basic questions of how metal properties evolve as a function of cluster size or how superfluidity appears in finite systems, have been addressed. Recent developments allow us to produce intense and slow beams to probe surface states with unprecedented sensitivity and even probe matter wave interference for inertial tests (work in progress report).