Theoretical and experimental investigations of electron emission during water ionization by light ion impact

C. Champion (1) , C. Dal Cappello (1)

1 LPMC - Laboratoire de physique moléculaire et des collisions

An ab initio quantum-mechanical treatment is applied for treating the ionization process of water vapour by light ions. In this theoretical model, the initial state of the system is composed of a projectile and a water target described by a plane wave and an accurate one-centre molecular wave-function, respectively, whereas the final state is constituted by a slow ejected electron and a scattered projectile represented by a Coulomb wave and a plane wave, respectively. The obtained results are compared to available experimental data in terms of doubly differential cross sections (DDCS), singly differential cross sections (SDCS) and total cross sections (TCS). A good agreement is generally found especially for the SDCS and the TCS.

Mots clés: water ionization; ion impact; theoretical cross sections; experimental comparisons

Domaines: Physique Atomique [physics.atom-ph]

C. Champion, C. Dal Cappello. Theoretical and experimental investigations of electron emission during water ionization by light ion impact. The Seventh International Symposium on Swift Heavy Ions in Matter, Jun 2008, Lyon, France. ⟨hal-00252094⟩