In this paper we use a zero-range potential (ZRP) method to model positron interaction with molecules. This allows us to investigate the e?ect of molecular vibrations on positron–molecule annihilation using the van der Waals dimer Kr2 as an example. We also use the ZRP to explore positron binding to polyatomics and examine the dependence of the binding energy on the size of the molecule for alkanes. We ?nd that a second bound state appears for a molecule with ten carbons, similar to recent experimental evidence for such a state emerging in alkanes with twelve carbons.
|Number of pages||7|
|Journal||Nuclear Instruments & Methods in Physics Research - Section B: Beam Interactions with Materials and Atoms|
|Issue number||1 SPEC. ISS.|
|Publication status||Published - Jun 2006|
ASJC Scopus subject areas
- Surfaces, Coatings and Films
- Surfaces and Interfaces