Two S-wave resonances in positron scattering by a helium ion were analyzed using wave packet analysis. The position and width for both the resonance states were determined through the resulting time delays. It was observed that a hump is temporarily formed in the closed channel retaining the shape as appeared , grown, decayed and disappeared with time. It was found that the lower resonance dominantly formed and decayed into the n=2 states of the helium ion, while the higher resonance formed into the n=3 states.
|Journal||Physical Review A - Atomic, Molecular, and Optical Physics|
|Publication status||Published - 2004 Dec|
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics