Quantum resonances in low-energy collisions are a sensitive probe of the intermolecular forces. They dominate the final quantum state distribution even for strong and highly anisotropic interactions, as recently observed for Feshbach resonances populated by Penning ionization of dihydrogen colliding with a metastable rare gas atom [1]. For such a small collision complex, full quantum...
The study of molecular collisions with the highest possible detail has been an important research theme in physical chemistry for decades. Experimentally, the level of detail obtained in these studies depends on the quality of preparation of the collision partners before the collision, and on how accurately the products are analyzed afterward.
Over the last years, methods have been...
Compton scattering is the fundamental light-matter interaction process discussed in the textbooks as a billiard-type collision, in which a photon (as a particle) is deflected and transfers parts of its energy and momentum to an electron initially at rest. If electron is bound in an atom or molecule, its momentum distribution contributes to the balance, which is known as the impulse...
The results of a newly developed version of the Molecular Convergent Close-Coupling (MCCC) method [1,2] of calculating cross sections for electron scattering on the H$_3^+$ molecule are reported. Integrated cross sections for dissociative electronic excitation and ionisation are presented, yielding good agreement with the experiment [3,4]. The causes of previous disagreements between theory...
