Berlin 2001 – wissenschaftliches Programm

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MO: Molekülphysik

MO 1: Posters Monday: Clusters, Fullerenes and Nanotubes

MO 1.9: Poster

Montag, 2. April 2001, 12:30–15:00, AT3

High-resolution electron ionization study of molecules and clusters: appearance energies — •G. Hanel, T. Fiegele, M. Lezius, I. Torres, P. Tegeder, N. Mason, M. Farizon, B. Farizon, A. Stamatovic, P. Scheier, and T.D. Maerk — Institut f. Ionenphysik, Universitaet Innsbruck, Technikerstr.25, A-6020 Innsbruck, Austria

Using a recently constructed high-resolution electron - molecule crossed beam instrument, consisting of a hemispherical electron monochromator and a quadrupole mass spectrometer, we have studied the ionization efficiency threshold behavior of various molecules Cl2O, CH4, C3H8, CF4, CHF3, H2O, D2O, C6H6, C6D6, and clusters (Ne, Ar, Kr, Xe, H2, D2, N2O). Proper analysis of these data a recently developed method yields corresponding ionization energies, which are compared with literature data where available.

Work supported by FWF, Wien.