Matches in SemOpenAlex for { <https://semopenalex.org/work/W157499663> ?p ?o ?g. }
Showing items 1 to 79 of
79
with 100 items per page.
- W157499663 abstract "Positronium, Ps, is the atom-like bound state of an electron and its antimatter counterpart, thepositron. This work encompasses the experimental techniques required to produce a collimatedbeam of Ps atoms and recent investigations of Ps collisions on a variety of atomic and moleculartargets to determine Ps total and fragmentation cross-sections. For the former experiment, thepresent work is compared to theory - for which there is now very good agreement for low energyPs–He collisions - and to other projectiles where the present data shows that total cross-sectionsfor equivelocity Ps and electrons are nearly identical for a wide range of targets and velocities.The Ps fragmentation measurements proceed via the detection of ejected electrons or positronsfor Ps collisions on Xe at 18 and 30 eV. Detection of ejected positrons is a unique signature ofPs fragmentation and the recent integrated measurements for this process agree well with theory,as do the shapes of the differential cross-sections with respect to the longitudinal energy of theejected positrons. Concerning these, the energy dependence of the positron distributions appearsimilar for the present measurements on Xe and those previously measured for a He target. Whendetecting ejected electrons, the experiment is sensitive to reactions in which the projectile and/ortarget are ionised, and the integrated cross-sections indicate that target-ionisation is significant atonly ∼3 eV above threshold in Xe." @default.
- W157499663 created "2016-06-24" @default.
- W157499663 creator A5089076172 @default.
- W157499663 date "2009-12-01" @default.
- W157499663 modified "2023-09-26" @default.
- W157499663 title "Collisions of positronium with atoms and molecules" @default.
- W157499663 hasPublicationYear "2009" @default.
- W157499663 type Work @default.
- W157499663 sameAs 157499663 @default.
- W157499663 citedByCount "0" @default.
- W157499663 crossrefType "dissertation" @default.
- W157499663 hasAuthorship W157499663A5089076172 @default.
- W157499663 hasConcept C105066094 @default.
- W157499663 hasConcept C111919701 @default.
- W157499663 hasConcept C121332964 @default.
- W157499663 hasConcept C145148216 @default.
- W157499663 hasConcept C147120987 @default.
- W157499663 hasConcept C149635348 @default.
- W157499663 hasConcept C154726568 @default.
- W157499663 hasConcept C159985019 @default.
- W157499663 hasConcept C184779094 @default.
- W157499663 hasConcept C185544564 @default.
- W157499663 hasConcept C191015642 @default.
- W157499663 hasConcept C192562407 @default.
- W157499663 hasConcept C198291218 @default.
- W157499663 hasConcept C201941533 @default.
- W157499663 hasConcept C202100949 @default.
- W157499663 hasConcept C204323151 @default.
- W157499663 hasConcept C41008148 @default.
- W157499663 hasConcept C49304495 @default.
- W157499663 hasConcept C58312451 @default.
- W157499663 hasConcept C62520636 @default.
- W157499663 hasConceptScore W157499663C105066094 @default.
- W157499663 hasConceptScore W157499663C111919701 @default.
- W157499663 hasConceptScore W157499663C121332964 @default.
- W157499663 hasConceptScore W157499663C145148216 @default.
- W157499663 hasConceptScore W157499663C147120987 @default.
- W157499663 hasConceptScore W157499663C149635348 @default.
- W157499663 hasConceptScore W157499663C154726568 @default.
- W157499663 hasConceptScore W157499663C159985019 @default.
- W157499663 hasConceptScore W157499663C184779094 @default.
- W157499663 hasConceptScore W157499663C185544564 @default.
- W157499663 hasConceptScore W157499663C191015642 @default.
- W157499663 hasConceptScore W157499663C192562407 @default.
- W157499663 hasConceptScore W157499663C198291218 @default.
- W157499663 hasConceptScore W157499663C201941533 @default.
- W157499663 hasConceptScore W157499663C202100949 @default.
- W157499663 hasConceptScore W157499663C204323151 @default.
- W157499663 hasConceptScore W157499663C41008148 @default.
- W157499663 hasConceptScore W157499663C49304495 @default.
- W157499663 hasConceptScore W157499663C58312451 @default.
- W157499663 hasConceptScore W157499663C62520636 @default.
- W157499663 hasLocation W1574996631 @default.
- W157499663 hasOpenAccess W157499663 @default.
- W157499663 hasPrimaryLocation W1574996631 @default.
- W157499663 hasRelatedWork W1656725742 @default.
- W157499663 hasRelatedWork W1964975528 @default.
- W157499663 hasRelatedWork W1967316073 @default.
- W157499663 hasRelatedWork W1971177224 @default.
- W157499663 hasRelatedWork W1984649919 @default.
- W157499663 hasRelatedWork W2003840664 @default.
- W157499663 hasRelatedWork W2032310951 @default.
- W157499663 hasRelatedWork W2032872731 @default.
- W157499663 hasRelatedWork W2047962387 @default.
- W157499663 hasRelatedWork W2052723658 @default.
- W157499663 hasRelatedWork W2068436733 @default.
- W157499663 hasRelatedWork W2070997556 @default.
- W157499663 hasRelatedWork W2072703763 @default.
- W157499663 hasRelatedWork W2073443666 @default.
- W157499663 hasRelatedWork W2467706935 @default.
- W157499663 hasRelatedWork W26080922 @default.
- W157499663 hasRelatedWork W3034117997 @default.
- W157499663 hasRelatedWork W30894804 @default.
- W157499663 hasRelatedWork W3111923016 @default.
- W157499663 hasRelatedWork W67390808 @default.
- W157499663 isParatext "false" @default.
- W157499663 isRetracted "false" @default.
- W157499663 magId "157499663" @default.
- W157499663 workType "dissertation" @default.