Analysis and manipulation of atomic and molecular collisions using laser light [Elektronische Ressource] / von André Grimpe

Analysis and manipulation of atomic andmolecular collisions using laser lightVon derFakulta¨t fu¨r Mathematik und PhysikderGottfried Wilhelm Leibniz¨Universitat Hannoverzur Erlangung des GradesDoktor der NaturwissenschaftenDr. rer. nat.genehmigte DissertationvonDipl.-Phys. Andre´ Grimpegeboren am 27.09.1968 in Stolzenau2006Referent: Prof. Dr. Joachim GroßerCoreferent: Prof. Dr. Manfred KockTag der Promotion: 18.07.20062AbstractOptical collisions in a crossed beam experiment are examined for the atomic collisionpairs LiHe, LiNe, NaNe. Differential cross sections are measured in order to probe thequallity of quantum chemical calculated and spectroscopical determined molecular po-tentials. The linear polarization of the excitation laser is used to manipulate the contrastof the differential cross sections for NaNe. Using elliptical polarized light total controlover the angular position and the contrast of the interference pattern is demonstrated.Differential cross sections for the collision pairs LiH and LiD show a pronouncedoscillatory structure, which for the first time is observed for atom-molecule opticalcollisions.Key words: optical collisions, molecular potentials, control of atomic collisionsOptische Sto¨ße der atomare Stoßpaare LiHe, LiNe, NaNe werden in einem Experimentmit gekreuzten Teilchenstrahlen untersucht.