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Conference Paper: Millimeter positron focusing using a hybrid lens design

TitleMillimeter positron focusing using a hybrid lens design
Authors
KeywordsCanonical Angular Momentum
Focussing
Hybrid Optics
Positron Beam
Issue Date2004
PublisherTrans Tech Publications Ltd. The Journal's web site is located at http://www.scientific.net
Citation
Materials Science Forum, 2004, v. 445-446, p. 465-467 How to Cite?
AbstractThe study of metal-semiconductor and metal-oxide-semiconductor systems with low energy positrons is made considerably easier if structures of millimeter dimension can be studied. For this reason the production of a positron beam of sub-millimeter dimension has been a long-term goal of the positron research group at the University of Hong Kong. The hybrid lens system employed consists of a standard Soa extraction lens in a magnetic field free region followed by a gridded Einzel lens that focuses positrons into a 100G magnetic funnel at an energy of lOkeV for transportation to the target. Here we report on the present progress, by showing the capability of obtaining millimeter diameter focusing at a preliminary 7.5kV beam energy.
Persistent Identifierhttp://hdl.handle.net/10722/80921
ISSN
2005 Impact Factor: 0.399
References

 

DC FieldValueLanguage
dc.contributor.authorCheung, CKen_HK
dc.contributor.authorKwan, PYen_HK
dc.contributor.authorShan, YYen_HK
dc.contributor.authorNaik, PSen_HK
dc.contributor.authorWeng, HMen_HK
dc.contributor.authorBeling, CDen_HK
dc.contributor.authorFung, Sen_HK
dc.date.accessioned2010-09-06T08:11:45Z-
dc.date.available2010-09-06T08:11:45Z-
dc.date.issued2004en_HK
dc.identifier.citationMaterials Science Forum, 2004, v. 445-446, p. 465-467en_HK
dc.identifier.issn0255-5476en_HK
dc.identifier.urihttp://hdl.handle.net/10722/80921-
dc.description.abstractThe study of metal-semiconductor and metal-oxide-semiconductor systems with low energy positrons is made considerably easier if structures of millimeter dimension can be studied. For this reason the production of a positron beam of sub-millimeter dimension has been a long-term goal of the positron research group at the University of Hong Kong. The hybrid lens system employed consists of a standard Soa extraction lens in a magnetic field free region followed by a gridded Einzel lens that focuses positrons into a 100G magnetic funnel at an energy of lOkeV for transportation to the target. Here we report on the present progress, by showing the capability of obtaining millimeter diameter focusing at a preliminary 7.5kV beam energy.en_HK
dc.languageengen_HK
dc.publisherTrans Tech Publications Ltd. The Journal's web site is located at http://www.scientific.neten_HK
dc.relation.ispartofMaterials Science Forumen_HK
dc.rightsMaterials Science Forum. Copyright © Trans Tech Publications Ltd.en_HK
dc.subjectCanonical Angular Momentumen_HK
dc.subjectFocussingen_HK
dc.subjectHybrid Opticsen_HK
dc.subjectPositron Beamen_HK
dc.titleMillimeter positron focusing using a hybrid lens designen_HK
dc.typeConference_Paperen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0255-5476&volume=445-446&spage=465&epage=467&date=2004&atitle=Millimeter+positron+focusing+using+a+hybrid+lens+designen_HK
dc.identifier.emailBeling, CD: cdbeling@hkucc.hku.hken_HK
dc.identifier.emailFung, S: sfung@hku.hken_HK
dc.identifier.authorityBeling, CD=rp00660en_HK
dc.identifier.authorityFung, S=rp00695en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.scopuseid_2-s2.0-3142746263en_HK
dc.identifier.hkuros85723en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-3142746263&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume445-446en_HK
dc.identifier.spage465en_HK
dc.identifier.epage467en_HK
dc.publisher.placeSwitzerlanden_HK
dc.identifier.scopusauthoridCheung, CK=10044144900en_HK
dc.identifier.scopusauthoridKwan, PY=12243875000en_HK
dc.identifier.scopusauthoridShan, YY=7203036700en_HK
dc.identifier.scopusauthoridNaik, PS=8451851900en_HK
dc.identifier.scopusauthoridWeng, HM=7102468725en_HK
dc.identifier.scopusauthoridBeling, CD=7005864180en_HK
dc.identifier.scopusauthoridFung, S=7201970040en_HK

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