Zur Theorie der Streuung von Li 7 + -Ionen an Edelgasen

Abstract

The angular distribution of Li~-ions scattered by rare gas atoms shows at scattering angles in the order of 10 -~ < ~9 < 10 -a tad characteristic maxima of intensity. These maxima cannot be explained by the electron scattering theory applying electrons equienergetie to the Li~-ions. Therefore the interaction potential between the scattered Li~-ions and the rare gas atom is extended in such a way, that the mutual action of the charge distributions of both systems is taken into account. A simple form for this potential gives positions of the maxima which are in good agreement with the experimental values.

Collision-induced dissociation of H 3 + ions

“…For a test of this prediction and a further test of the assumed reaction scheme we exchanged the target gas H 2 by He and Kr-gas. From a comparison of peak heights for the different target gases together with the known polarizabilities of Hz, He and Kr [11] and with values of the cut-off parameter a for He and Kr from Schoenbeck [12] we found the value of a for H 2 to be 6.2 a o (see Table 1). Values of a calculated from He and from Kr measurements agree well.…”