Berlin 2001 – wissenschaftliches Programm
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A: Atomphysik
A 18: Photoionisation II (joint session A and MO)
A 18.6: Vortrag
Freitag, 6. April 2001, 17:00–17:15, H1012
Double photoionization of fixed in space H2 — •Thorsten Weber1, Reinhard Doerner2, Achim Czasch1, Allen Landers3, Timur Osipov4, Lew Cocke4, Ottmar Jagutzki1, Mike Prior5, and Horst Schmidt-Boecking1 — 1Institut fuer Kernphysik Frankfurt, August-Euler-Strasse 6, 60486 Frankfurt am Main, Germany — 2Fakultaet fuer Physik, Universitaet Freiburg, Germany — 3Department of Physics, Western Michigan University,Kalamazoo, USA — 4Department of Physics, Kansas State University, Manhattan, USA — 5Lawrence Berkeley National Laboratory, Berkeley, USA
The goal of the experiment was to study the influence of alignment on the electron emission from a two body Coulomb potential. Applying the technique of COLTRIMS it was possible to measure Tripple Differential Cross Sections (TDCS) for the double photo ionization of H2 for fixed molecular orientation. We present momentum distributions of the second emitted electron for fixed orientations of the molecular axis in space and the polarization vector of the incoming photon while varying the kinetic energy and the emission angle of the first electron. The data can also be transferred into polar angle distributions allowing comparison with theoretical results for H2 and data for photo double ionization of helium measured with COLTRIMS.