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High-resolution, low-energy positron scattering from helium: measurements of the total scattering cross section

Sullivan, James; Makochekanwa, Casten; Jones, Anthony; Caradonna, Peter; Buckman, Stephen

Description

We present high-resolution (80 meV FWHM) measurements of the positron-helium total cross section in the energy range between 1 and 15 eV. The absolute magnitude of the cross section is in excellent agreement with recent state-of-the-art theoretical calculations and with previous absolute measurements (e.g. Mizogawa et al). Specific scans in the 1-3 eV and 5-8 eV energy regions reveal no evidence of the structures in the cross section reported by Karwasz et al.

dc.contributor.authorSullivan, James
dc.contributor.authorMakochekanwa, Casten
dc.contributor.authorJones, Anthony
dc.contributor.authorCaradonna, Peter
dc.contributor.authorBuckman, Stephen
dc.date.accessioned2015-12-10T22:13:53Z
dc.identifier.issn0953-4075
dc.identifier.urihttp://hdl.handle.net/1885/49969
dc.description.abstractWe present high-resolution (80 meV FWHM) measurements of the positron-helium total cross section in the energy range between 1 and 15 eV. The absolute magnitude of the cross section is in excellent agreement with recent state-of-the-art theoretical calculations and with previous absolute measurements (e.g. Mizogawa et al). Specific scans in the 1-3 eV and 5-8 eV energy regions reveal no evidence of the structures in the cross section reported by Karwasz et al.
dc.publisherInstitute of Physics Publishing
dc.sourceJournal of Physics B: Atomic, Molecular and Optical Physics
dc.subjectKeywords: Helium; Optical resolving power; Positrons; Cross section; Theoretical calculations; Scattering
dc.titleHigh-resolution, low-energy positron scattering from helium: measurements of the total scattering cross section
dc.typeJournal article
local.description.notesImported from ARIES
local.identifier.citationvolume41
dc.date.issued2008
local.identifier.absfor020201 - Atomic and Molecular Physics
local.identifier.ariespublicationu4169254xPUB195
local.type.statusPublished Version
local.contributor.affiliationSullivan, James, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationMakochekanwa, Casten, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationJones, Anthony, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationCaradonna, Peter, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationBuckman, Stephen, College of Physical and Mathematical Sciences, ANU
local.description.embargo2037-12-31
local.bibliographicCitation.issue081001
local.bibliographicCitation.startpage1
local.bibliographicCitation.lastpage4
local.identifier.doi10.1088/0953-4075/41/8/081001
dc.date.updated2015-12-09T08:00:49Z
local.identifier.scopusID2-s2.0-42549089358
local.identifier.thomsonID000254779000001
CollectionsANU Research Publications

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