Ionen-Molekül-Reaktionen in Gasphase von via REMPI zustandselektierten Ionen in den Reaktionssystemen H/DCl+ + HCl und HCl+ + H2 zur Untersuchung des Einflusses von Translations- und Rotationsenergie

The influence of translational and rotational energy on cross sections sigma of ion-molecule reactions were studied in this Phd thesis. HCl+ + HCl --> H2Cl+ + Cl (PT) DCl+ + HCl --> HDCl+ + Cl (DT) DCl+ + HCl --> HCl+ + DCl (CT) HCl+ + H2 --> H2Cl+ + H (HA) As a result from this work it can be concluded that the cross section for PT, DT and HA show the expected dependence on the collision energy. For the CT reaction an unexpected maximum for sigma at E_cm = 0.5 eV was observed. For the rotational dependence of sigma there are more differences between the various reactions. CT shows no dependence at all, but local maxima for R(7). The cross section for the DT is decreasing with an increasing mean rotational energy of DCl+. For PT this is also true until the minima around E_rot = 32.54 meV. For the highest rotational excitation a larger value for sigma was observed. In the HCl+ + H2 reaction system the dependence on the rotational energy is changing as the collision energy is changed. In addition to the experimental work two theoretical approaches were used: modelling the experimental results and doing quantum chemical calculations.