Angular Distribution of Hydrogen Fragment Ions in H+ - H2 Collisions

Linear polarization and angular distribution of Lyman-α1 radiation following from the REC process in collisions of bare uranium ions with H2

G. Weber1,2, H. Bräuning1, S. Hess1,3, U. Spillmann1,3, S. Fritzsche2, S. Geyer1,3, R. Märtin1,3, R. Reuschl1,3, A. Surzhykov2, S. Trotsenko1,3, D. Winters1, and Th. Stöhlker1,2 1GSI, Darmstadt, Germany; 2University of Heidelberg, Germany; 3University of Frankfurt, Germany For high-Z systems the elementary process of photoionization is studied best in inverse kinematics by utilizing its time-re...

Angular distribution studies on the two-photon ionization of hydrogen-like ions: Relativistic description‡

The angular distribution of the emitted electrons, following the twophoton ionization of the hydrogen-like ions, is studied within the framework of second order perturbation theory and the Dirac equation. Using a density matrix approach, we have investigated the effects which arise from the polarization of the incoming light as well as from the higher multipoles in the expansion of the electron...

FISSION FRAGMENT ANGULAR ANISOTROPIES AND INERTIA PARAMETERS

An analysis of selected fission fragment angular distributions from helium-ion induced fission is made using an exact theoretical expression. Theoretical anisotropies obtained with the transition state model are compared with their corresponding values deduced from the statistical scission model. The nuclear moment of inertia extracted from the model calculations are compared with their est...

Quantum dynamics of rovibrational transitions in H2-H2 collisions: internal energy and rotational angular momentum conservation effects.

We present a full dimensional quantum mechanical treatment of collisions between two H(2) molecules over a wide range of energies. Elastic and state-to-state inelastic cross sections for ortho-H(2) + para-H(2) and ortho-H(2) + ortho-H(2) collisions have been computed for different initial rovibrational levels of the molecules. For rovibrationally excited molecules, it has been found that state-...

Two-Center Effect on Low-Energy Electron Emission in Collisions of 1-MeV/u Bare Ions with Atomic Hydrogen, Molecular Hydrogen, and Helium: II. H2 and He