Matches in SemOpenAlex for { <https://semopenalex.org/work/W2589050667> ?p ?o ?g. }
Showing items 1 to 67 of
67
with 100 items per page.
- W2589050667 abstract "Positron lifetime spectroscopy is a powerful tool to identify vacancy type defects in semiconductor materials. Conventionally, applicability of the positron lifetime measurement has been limited to bulk samples. However, many interesting materials are nowadays available only as thin epitaxial samples. In order to measure these samples a positron lifetime beam is needed. This work describes the concept and the design of a pulsed low-energy positron lifetime beam facility. The theoretical background of the beam pulsing is reviewed. The construction of the pulsing system is presented in detail and results from electron and positron tests with this beam facility are introduced. As an application of the pulsed lifetime beam the results of the measurements on InN layers done at Universitat der Bundeswehr are also presented. The pulsing system in this work is composed of three different components, two bunchers and a chopper. The bunchers modulate the beam velocity to create a time varying positron beam intensity and to result a very narrow positron bunch at the target. The chopper is used to get rid of the background between the pulses and to improve the peak to background ratio. When this pulsing system is tested with electrons, a full width at half maximum of 160 ps and a peak to background ratio of 5000:1 is obtained. For positrons, the values are 270 ps and 4000:1 respectively." @default.
- W2589050667 created "2017-02-24" @default.
- W2589050667 creator A5031097926 @default.
- W2589050667 date "2005-06-29" @default.
- W2589050667 modified "2023-09-24" @default.
- W2589050667 title "Construction of a pulsing system for low-energy positrons" @default.
- W2589050667 cites W1593609309 @default.
- W2589050667 cites W2168062895 @default.
- W2589050667 hasPublicationYear "2005" @default.
- W2589050667 type Work @default.
- W2589050667 sameAs 2589050667 @default.
- W2589050667 citedByCount "4" @default.
- W2589050667 crossrefType "journal-article" @default.
- W2589050667 hasAuthorship W2589050667A5031097926 @default.
- W2589050667 hasConcept C120665830 @default.
- W2589050667 hasConcept C121332964 @default.
- W2589050667 hasConcept C147120987 @default.
- W2589050667 hasConcept C150883371 @default.
- W2589050667 hasConcept C165801399 @default.
- W2589050667 hasConcept C168834538 @default.
- W2589050667 hasConcept C184779094 @default.
- W2589050667 hasConcept C185544564 @default.
- W2589050667 hasConcept C192562407 @default.
- W2589050667 hasConcept C202100949 @default.
- W2589050667 hasConcept C2780191706 @default.
- W2589050667 hasConcept C2985595821 @default.
- W2589050667 hasConcept C62520636 @default.
- W2589050667 hasConceptScore W2589050667C120665830 @default.
- W2589050667 hasConceptScore W2589050667C121332964 @default.
- W2589050667 hasConceptScore W2589050667C147120987 @default.
- W2589050667 hasConceptScore W2589050667C150883371 @default.
- W2589050667 hasConceptScore W2589050667C165801399 @default.
- W2589050667 hasConceptScore W2589050667C168834538 @default.
- W2589050667 hasConceptScore W2589050667C184779094 @default.
- W2589050667 hasConceptScore W2589050667C185544564 @default.
- W2589050667 hasConceptScore W2589050667C192562407 @default.
- W2589050667 hasConceptScore W2589050667C202100949 @default.
- W2589050667 hasConceptScore W2589050667C2780191706 @default.
- W2589050667 hasConceptScore W2589050667C2985595821 @default.
- W2589050667 hasConceptScore W2589050667C62520636 @default.
- W2589050667 hasLocation W25890506671 @default.
- W2589050667 hasOpenAccess W2589050667 @default.
- W2589050667 hasPrimaryLocation W25890506671 @default.
- W2589050667 hasRelatedWork W1998955655 @default.
- W2589050667 hasRelatedWork W2001630418 @default.
- W2589050667 hasRelatedWork W2003789403 @default.
- W2589050667 hasRelatedWork W2020230397 @default.
- W2589050667 hasRelatedWork W2036502003 @default.
- W2589050667 hasRelatedWork W2083192921 @default.
- W2589050667 hasRelatedWork W2093409807 @default.
- W2589050667 hasRelatedWork W2109375226 @default.
- W2589050667 hasRelatedWork W2193843349 @default.
- W2589050667 hasRelatedWork W2385644957 @default.
- W2589050667 hasRelatedWork W2590418106 @default.
- W2589050667 hasRelatedWork W2749352835 @default.
- W2589050667 hasRelatedWork W2942038641 @default.
- W2589050667 hasRelatedWork W2949557850 @default.
- W2589050667 hasRelatedWork W3094479269 @default.
- W2589050667 hasRelatedWork W3099529706 @default.
- W2589050667 hasRelatedWork W3121766170 @default.
- W2589050667 hasRelatedWork W3149832061 @default.
- W2589050667 hasRelatedWork W3210110806 @default.
- W2589050667 hasRelatedWork W82005169 @default.
- W2589050667 isParatext "false" @default.
- W2589050667 isRetracted "false" @default.
- W2589050667 magId "2589050667" @default.
- W2589050667 workType "article" @default.