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Article: Beam optics studies for the planned hybrid electrostatic-magnetic guided slow positron beam in Hong Kong

TitleBeam optics studies for the planned hybrid electrostatic-magnetic guided slow positron beam in Hong Kong
Authors
Keywords07.77
41.85
78.70
Issue Date1995
PublisherSpringer Verlag. The Journal's web site is located at http://link.springer.de/link/service/journals/00339/index.htm
Citation
Applied Physics A Materials Science & Processing, 1995, v. 61 n. 3, p. 325-329 How to Cite?
AbstractDesign simulations are presented of a variable energy (0-40 keV) slow-positron beam that incorporates the convenience of magnetic guidance with the desirability of some electrostatic focusing produced by a lens structure operating in a low but increasing magnetic field region. Filtering of unmoderated positrons and gamma rays is to be accomplished using two conventional E×B filters. In a novel way it is proposed that the final beam energy be adjusted using a simple linear de-acceleration stage and that the optimal electrostatic element potentials for efficient extraction, focusing and filtering of positrons be floated relative to the de-acceleration potential. The resulting intense and easily controllable sub-millimetre diameter beam should be suitable for both lateral and depth profiling of defects in semiconductor materials. © 1995 Springer-Verlag.
Persistent Identifierhttp://hdl.handle.net/10722/80358
ISSN
2015 Impact Factor: 1.444
2015 SCImago Journal Rankings: 0.535
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorLiMing, Wen_HK
dc.contributor.authorMelwani, SBen_HK
dc.contributor.authorBeling, CDen_HK
dc.contributor.authorFung, Sen_HK
dc.date.accessioned2010-09-06T08:05:34Z-
dc.date.available2010-09-06T08:05:34Z-
dc.date.issued1995en_HK
dc.identifier.citationApplied Physics A Materials Science & Processing, 1995, v. 61 n. 3, p. 325-329en_HK
dc.identifier.issn0947-8396en_HK
dc.identifier.urihttp://hdl.handle.net/10722/80358-
dc.description.abstractDesign simulations are presented of a variable energy (0-40 keV) slow-positron beam that incorporates the convenience of magnetic guidance with the desirability of some electrostatic focusing produced by a lens structure operating in a low but increasing magnetic field region. Filtering of unmoderated positrons and gamma rays is to be accomplished using two conventional E×B filters. In a novel way it is proposed that the final beam energy be adjusted using a simple linear de-acceleration stage and that the optimal electrostatic element potentials for efficient extraction, focusing and filtering of positrons be floated relative to the de-acceleration potential. The resulting intense and easily controllable sub-millimetre diameter beam should be suitable for both lateral and depth profiling of defects in semiconductor materials. © 1995 Springer-Verlag.en_HK
dc.languageengen_HK
dc.publisherSpringer Verlag. The Journal's web site is located at http://link.springer.de/link/service/journals/00339/index.htmen_HK
dc.relation.ispartofApplied Physics A Materials Science & Processingen_HK
dc.subject07.77en_HK
dc.subject41.85en_HK
dc.subject78.70en_HK
dc.titleBeam optics studies for the planned hybrid electrostatic-magnetic guided slow positron beam in Hong Kongen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0947-8396&volume=61&spage=325&epage=329&date=1995&atitle=Beam+optics+studies+for+the+planned+hybrid+electrostatic-magnetic+guided+slow+positron+beam+in+Hong+Kongen_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.doi10.1007/BF01538198en_HK
dc.identifier.scopuseid_2-s2.0-0029376510en_HK
dc.identifier.hkuros9260en_HK
dc.identifier.volume61en_HK
dc.identifier.issue3en_HK
dc.identifier.spage325en_HK
dc.identifier.epage329en_HK
dc.identifier.isiWOS:A1995RR90200013-
dc.publisher.placeGermanyen_HK
dc.identifier.scopusauthoridLiMing, W=24401511900en_HK
dc.identifier.scopusauthoridMelwani, SB=6507817296en_HK
dc.identifier.scopusauthoridBeling, CD=7005864180en_HK
dc.identifier.scopusauthoridFung, S=7201970040en_HK

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