Near-Threshold Ionization of Argon by Positron Impact
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Babij, Tamara; Machacek, Joshua; Murtagh, Daniel; Buckman, Stephen; Sullivan, James
Description
The direct single-ionization cross section for Ar by positron impact has been measured in the region above the first ionization threshold. These measurements are compared to semiclassical calculations which give rise to a power law variation of the cross section in the threshold region. The experimental results appear to be in disagreement with extensions to the Wannier theory applied to positron impact ionization, with a smaller exponent than that calculated by most previous works. In fact, in...[Show more]
dc.contributor.author | Babij, Tamara | |
---|---|---|
dc.contributor.author | Machacek, Joshua | |
dc.contributor.author | Murtagh, Daniel | |
dc.contributor.author | Buckman, Stephen | |
dc.contributor.author | Sullivan, James | |
dc.date.accessioned | 2020-10-14T00:55:35Z | |
dc.date.available | 2020-10-14T00:55:35Z | |
dc.identifier.issn | 0031-9007 | |
dc.identifier.uri | http://hdl.handle.net/1885/212483 | |
dc.description.abstract | The direct single-ionization cross section for Ar by positron impact has been measured in the region above the first ionization threshold. These measurements are compared to semiclassical calculations which give rise to a power law variation of the cross section in the threshold region. The experimental results appear to be in disagreement with extensions to the Wannier theory applied to positron impact ionization, with a smaller exponent than that calculated by most previous works. In fact, in this work, we see no difference in threshold behavior between the positron and electron cases. Possible reasons for this discrepancy are discussed. | |
dc.format.mimetype | application/pdf | |
dc.language.iso | en_AU | |
dc.publisher | American Physical Society | |
dc.rights | © 2018 American Physical Society | |
dc.source | Physical Review Letters | |
dc.title | Near-Threshold Ionization of Argon by Positron Impact | |
dc.type | Journal article | |
local.description.notes | Imported from ARIES | |
local.identifier.citationvolume | 120 | |
dc.date.issued | 2018 | |
local.identifier.absfor | 020204 - Plasma Physics; Fusion Plasmas; Electrical Discharges | |
local.identifier.ariespublication | a383154xPUB9625 | |
local.publisher.url | http://prl.aps.org/ | |
local.type.status | Published Version | |
local.contributor.affiliation | Babij, Tamara, College of Science, ANU | |
local.contributor.affiliation | Machacek, Joshua, College of Science, ANU | |
local.contributor.affiliation | Murtagh, Daniel, College of Science, ANU | |
local.contributor.affiliation | Buckman, Stephen, College of Science, ANU | |
local.contributor.affiliation | Sullivan, James, College of Science, ANU | |
local.bibliographicCitation.issue | 11 | |
local.bibliographicCitation.startpage | 113401-1 | |
local.bibliographicCitation.lastpage | 113401-4 | |
local.identifier.doi | 10.1103/PhysRevLett.120.113401 | |
local.identifier.absseo | 859999 - Energy not elsewhere classified | |
dc.date.updated | 2020-07-06T08:18:28Z | |
local.identifier.scopusID | 2-s2.0-85044324443 | |
dcterms.accessRights | Open Access | |
dc.provenance | https://v2.sherpa.ac.uk/id/publication/13640..."The Published Version can be archived in an Institutional Repository" from SHERPA/RoMEO site (as at 14/10/2020). | |
Collections | ANU Research Publications |
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