ORCID
J. D. Paulsen: 0000-0001-6048-456X
Document Type
Article
Date
2008
Keywords
doppler effect, helium, momentum, transfer functions, atomic physics
Language
English
Official Citation
Energy-dependent Ps-He momentum-transfer cross section at low energies. JJ Engbrecht, MJ Erickson, CP Johnson, AJ Kolan, AE Legard, SP Lund, MJ Nyflot, & JD Paulsen, Physical Review A 77, 012711 (2008).
Disciplines
Physics
Description/Abstract
Positronium (Ps)-He scattering presents one of the few opportunities for both theory and experiment to tackle the fundamental interactions of Ps with ordinary matter. Below the dissociation energy of 6.8 eV, experimental and theoretical work has struggled to find agreement on the strength of this interaction as measured by the momentum-transfer cross section (Ïm). Here, we present work utilizing the Doppler broadening technique with an age-momentum correlation apparatus. This work demonstrates a strong energy dependence for this cross section at energies below 1 eV and is consistent with previous experimental results.
ISSN
10502947
Recommended Citation
Energy-dependent Ps-He momentum-transfer cross section at low energies. JJ Engbrecht, MJ Erickson, CP Johnson, AJ Kolan, AE Legard, SP Lund, MJ Nyflot, & JD Paulsen, Physical Review A 77, 012711 (2008).
Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial-No Derivative Works 4.0 International License.
