Confined variational calculation of o -Ps-He scattering properties

M. S. Wu, Junyi Zhang, X. Gao, Y. Qian, H. H. Xie, K. Varga, Z. C. Yan, Udo Schwingenschlögl

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

High-precision quantum-mechanical calculations have been developed to investigate positronium (Ps) scattering. Positronium scattering experiments are a powerful tool to study positronium-matter interactions, but the theoretical description of these experiments needs better accuracy. We have developed an ab initio confined variational approach that can reach higher collision energy, includes higher orbital momenta and uses small confining radii. Calculation of the Ps-He momentum-transfer cross section shows that the experimental Doppler broadening spectroscopy results are questionable. The energy dependence of the pickoff annihilation rate is also calculated, demonstrating an important role of the so far neglected P-wave contribution.
Original languageEnglish (US)
JournalPhysical Review A
Volume101
Issue number4
DOIs
StatePublished - Apr 21 2020

Fingerprint Dive into the research topics of 'Confined variational calculation of o -Ps-He scattering properties'. Together they form a unique fingerprint.

Cite this