RESONANCE IN POSITRON-HELIUM SCATTERING AT MEDIUM-ENERGY

Authors
CHAUDHURI P ADHIKARI SK GHOSH AS
Citation
P. Chaudhuri et al., RESONANCE IN POSITRON-HELIUM SCATTERING AT MEDIUM-ENERGY, Journal of physics. B, Atomic molecular and optical physics, 30(2), 1997, pp. 81-85
Citations number
12
Categorie Soggetti
Physics, Atomic, Molecular & Chemical",Optics
Journal title
Journal of physics. B, Atomic molecular and optical physics → ACNP
ISSN journal
09534075
Volume
30
Issue
2
Year of publication
1997
Pages
81 - 85
Database
ISI
SICI code
0953-4075(1997)30:2<81:RIPSAM>2.0.ZU;2-Y
Abstract
A narrow S-wave resonance has been found in the positron-helium system at about 30 eV, using the close-coupling approach, in excitation and rearrangement cross sections to He(1s2s), He(1s2p), Ps(1s) and Ps(2s) states by employing different combinations of the following basis func tions: He(1s1s), He(1s2s), He(1s2p), Ps(1s) and Ps(2s), where Ps stand s for the positronium atom.