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Article: Deconvolution of Doppler-broadened positron annihilation lineshapes by the generalised least-squares method

TitleDeconvolution of Doppler-broadened positron annihilation lineshapes by the generalised least-squares method
Authors
Issue Date1995
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/apsusc
Citation
Applied Surface Science, 1995, v. 85 C, p. 182-186 How to Cite?
AbstractDeconvolution of the Doppler-broadened annihilation radiation lineshape has been carried out using the generalised least-squares method. The nondashlinear background subtraction is examined through tail stripping and step function fitting procedures. Spurious oscillations of the residual instrumental function are found not to produce an efficient inverse transformation. For this reason least-squares solutions are subjected to a nondashnegativity constraint in order to reduce the oscillations in the deconvoluted spectrum. This procedure improves the results dramatically and shows promise as regards quantitative studies of the local momentum distributions and defect characterisation at various depths of solids in future positron beam experiments. © 1995.
Persistent Identifierhttp://hdl.handle.net/10722/174722
ISSN
2015 Impact Factor: 3.15
2015 SCImago Journal Rankings: 0.930
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorPanda, BKen_HK
dc.contributor.authorFleischer, Sen_HK
dc.contributor.authorLing, CCen_HK
dc.contributor.authorBeling, CDen_HK
dc.contributor.authorFung, Sen_HK
dc.contributor.authorPanda, Sen_HK
dc.date.accessioned2012-11-26T08:47:04Z-
dc.date.available2012-11-26T08:47:04Z-
dc.date.issued1995en_HK
dc.identifier.citationApplied Surface Science, 1995, v. 85 C, p. 182-186en_HK
dc.identifier.issn0169-4332en_HK
dc.identifier.urihttp://hdl.handle.net/10722/174722-
dc.description.abstractDeconvolution of the Doppler-broadened annihilation radiation lineshape has been carried out using the generalised least-squares method. The nondashlinear background subtraction is examined through tail stripping and step function fitting procedures. Spurious oscillations of the residual instrumental function are found not to produce an efficient inverse transformation. For this reason least-squares solutions are subjected to a nondashnegativity constraint in order to reduce the oscillations in the deconvoluted spectrum. This procedure improves the results dramatically and shows promise as regards quantitative studies of the local momentum distributions and defect characterisation at various depths of solids in future positron beam experiments. © 1995.en_HK
dc.languageengen_US
dc.publisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/apsuscen_HK
dc.relation.ispartofApplied Surface Scienceen_HK
dc.rightsApplied Surface Science. Copyright © Elsevier BV.-
dc.titleDeconvolution of Doppler-broadened positron annihilation lineshapes by the generalised least-squares methoden_HK
dc.typeArticleen_HK
dc.identifier.emailLing, CC: ccling@hkucc.hku.hken_HK
dc.identifier.emailBeling, CD: cdbeling@hkucc.hku.hken_HK
dc.identifier.emailFung, S: sfung@hku.hken_HK
dc.identifier.authorityLing, CC=rp00747en_HK
dc.identifier.authorityBeling, CD=rp00660en_HK
dc.identifier.authorityFung, S=rp00695en_HK
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1016/0169-4332(94)00330-0-
dc.identifier.scopuseid_2-s2.0-0029632284en_HK
dc.identifier.hkuros3321-
dc.identifier.volume85en_HK
dc.identifier.issueCen_HK
dc.identifier.spage182en_HK
dc.identifier.epage186en_HK
dc.identifier.isiWOS:A1995QD95000033-
dc.publisher.placeNetherlandsen_HK
dc.identifier.scopusauthoridPanda, BK=22963418500en_HK
dc.identifier.scopusauthoridFleischer, S=7103394445en_HK
dc.identifier.scopusauthoridLing, CC=13310239300en_HK
dc.identifier.scopusauthoridBeling, CD=7005864180en_HK
dc.identifier.scopusauthoridFung, S=7201970040en_HK
dc.identifier.scopusauthoridPanda, S=55419719000en_HK

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