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Article: Thermal and optical excitation of trapped electrons in high-density polyethylene (HDPE) studied through positron annihilation

TitleThermal and optical excitation of trapped electrons in high-density polyethylene (HDPE) studied through positron annihilation
Authors
KeywordsHigh-density polyethylene
Low temperature
Optical cross-section
Positronium
Trapped electrons
Issue Date2011
PublisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/radphyschem
Citation
Radiation Physics And Chemistry, 2011, v. 80 n. 4, p. 529-534 How to Cite?
AbstractPositronium (Ps) formation in high-density polyethylene (HDPE) has been studied below the glass transition temperature. The formation probability increases with positron irradiation time due to an increasing number of inter-track trapped electrons becoming available for positron capture. The temperature variation of the saturated Ps level is discussed in different models. The quenching of trapped electrons by light has been studied and the optical de-trapping cross-section for different photon energies has been estimated over the visible region. © 2011 Elsevier Ltd.
Persistent Identifierhttp://hdl.handle.net/10722/142458
ISSN
2015 Impact Factor: 1.207
2015 SCImago Journal Rankings: 0.540
ISI Accession Number ID
Funding AgencyGrant Number
Research Grant Council of the Hong Kong Special Administrative Region, ChinaHKU700407
Funding Information:

The work described in this paper is supported by the Research Grant Council of the Hong Kong Special Administrative Region, China under project no HKU700407.

References

 

DC FieldValueLanguage
dc.contributor.authorNahid, Fen_HK
dc.contributor.authorZhang, JDen_HK
dc.contributor.authorYu, TFen_HK
dc.contributor.authorLing, CCen_HK
dc.contributor.authorFung, Sen_HK
dc.contributor.authorBeling, CDen_HK
dc.date.accessioned2011-10-28T02:46:39Z-
dc.date.available2011-10-28T02:46:39Z-
dc.date.issued2011en_HK
dc.identifier.citationRadiation Physics And Chemistry, 2011, v. 80 n. 4, p. 529-534en_HK
dc.identifier.issn0969-806Xen_HK
dc.identifier.urihttp://hdl.handle.net/10722/142458-
dc.description.abstractPositronium (Ps) formation in high-density polyethylene (HDPE) has been studied below the glass transition temperature. The formation probability increases with positron irradiation time due to an increasing number of inter-track trapped electrons becoming available for positron capture. The temperature variation of the saturated Ps level is discussed in different models. The quenching of trapped electrons by light has been studied and the optical de-trapping cross-section for different photon energies has been estimated over the visible region. © 2011 Elsevier Ltd.en_HK
dc.languageengen_US
dc.publisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/radphyschemen_HK
dc.relation.ispartofRadiation Physics and Chemistryen_HK
dc.subjectHigh-density polyethyleneen_HK
dc.subjectLow temperatureen_HK
dc.subjectOptical cross-sectionen_HK
dc.subjectPositroniumen_HK
dc.subjectTrapped electronsen_HK
dc.titleThermal and optical excitation of trapped electrons in high-density polyethylene (HDPE) studied through positron annihilationen_HK
dc.typeArticleen_HK
dc.identifier.emailLing, CC: ccling@hkucc.hku.hken_HK
dc.identifier.emailFung, S: sfung@hku.hken_HK
dc.identifier.emailBeling, CD: cdbeling@hkucc.hku.hken_HK
dc.identifier.authorityLing, CC=rp00747en_HK
dc.identifier.authorityFung, S=rp00695en_HK
dc.identifier.authorityBeling, CD=rp00660en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.radphyschem.2010.12.016en_HK
dc.identifier.scopuseid_2-s2.0-79251623971en_HK
dc.identifier.hkuros184555en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-79251623971&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume80en_HK
dc.identifier.issue4en_HK
dc.identifier.spage529en_HK
dc.identifier.epage534en_HK
dc.identifier.isiWOS:000287624600001-
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridNahid, F=23005581800en_HK
dc.identifier.scopusauthoridZhang, JD=8555988600en_HK
dc.identifier.scopusauthoridYu, TF=36050237900en_HK
dc.identifier.scopusauthoridLing, CC=13310239300en_HK
dc.identifier.scopusauthoridFung, S=7201970040en_HK
dc.identifier.scopusauthoridBeling, CD=7005864180en_HK
dc.identifier.citeulike8673817-

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