Abstract
The hyperspherical hidden crossing method (HHCM) has been used to calculate the positronium formation cross section for positron–lithium collisions in the energy range 0–1.8eV. Results for the s-, p- and d-wave positronium formation cross sections were previously reported; here we present new results for the f-wave. In energy range studied, we found that the Stückelberg phase ΔL varied only slightly with incident positron momentum ki and decreased in a systematic way with increasing partial wave L. The HHCM cross section for positronium formation (summed over the four partial waves) lies between experimental measurements of the lower and upper limits of this cross section; the f-wave contribution to the cross section dominates near the lithium excitation threshold.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
