Spin depolarization of Muonium in Mesoporous Silica

dc.contributor.authorDehn, MHen_AU
dc.contributor.authorArseneau, DJen_AU
dc.contributor.authorBridges, MDen_AU
dc.contributor.authorBuck, Ten_AU
dc.contributor.authorCortie, DLen_AU
dc.contributor.authorCottrell, SPen_AU
dc.contributor.authorFleming, DGen_AU
dc.contributor.authorKelly, JAen_AU
dc.contributor.authorMacFarlane, WAen_AU
dc.contributor.authorMacLachlan, MJen_AU
dc.contributor.authorMorris, GDen_AU
dc.contributor.authorMcKenzie, Ien_AU
dc.contributor.authorXiao, Jen_AU
dc.contributor.authorKiefl, RFen_AU
dc.date.accessioned2024-12-06T01:02:59Zen_AU
dc.date.available2024-12-06T01:02:59Zen_AU
dc.date.issued2014-12-16en_AU
dc.date.statistics2024-12en_AU
dc.description.abstractWe report muon spin rotation/relaxation measurements of muonium in mesoporous silica (SBA-15) with a high specific surface area of 600 m2/g. Up to 70 percent of the incoming muons form muonium and escape efficiently into the open pores at all temperatures between 3 and 300K. We present evidence that the interaction with the silica surfaces involves both spin exchange and a transition to a diamagnetic state, possibly due to dangling bonds on the surface. At very low temperatures, below 20K, the interaction between muonium and the silica surfaces is suppressed due to a He film coating the surfaces. These results indicate that it should be possible to use muonium to probe the surfaces of uncapped nanoparticles supported in silica. © 2014 The Authors - Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.en_AU
dc.identifier.articlenumber012006en_AU
dc.identifier.citationDehn, M. H., Arseneau, D. J., Bridges, M. D., Buck, T., Cortie, D. L., Cottrell, S. P., Fleming, D. G., Kelly, J. A., MacFarlane, W. A., MacLachlan, M. J., Morris, G. D., McKenzie, I., Xiao, J., & Kiefl, R. F. (2014). Spin Depolarization of muonium in mesoporous silica. Paper presented to the 13th International Conference on Muon Spin Rotation, Relaxation and Resonance 1–6 June 2014, Grindelwald, Switzerland. In Journal of Physics: Conference Series, 551(1), 012006. doi:10.1088/1742-6596/551/1/012006en_AU
dc.identifier.conferenceenddate2014-06-06en_AU
dc.identifier.conferencename13th International Conference on Muon Spin Rotation, Relaxation and Resonanceen_AU
dc.identifier.conferenceplaceGrindelwald, Switzerlanden_AU
dc.identifier.conferencestartdate2014-06-01en_AU
dc.identifier.issn1742-6588en_AU
dc.identifier.issn1742-6596en_AU
dc.identifier.issue1en_AU
dc.identifier.journaltitleJournal of Physics Conference Seriesen_AU
dc.identifier.urihttp://dx.doi.org/10.1088/1742-6596/551/1/012006en_AU
dc.identifier.urihttps://apo.ansto.gov.au/handle/10238/15801en_AU
dc.identifier.volume551en_AU
dc.language.isoenen_AU
dc.publisherIOP Publishingen_AU
dc.subjectMuon spin relaxationen_AU
dc.subjectSilicaen_AU
dc.subjectNanoparticlesen_AU
dc.subjectSpinen_AU
dc.subjectTemperature rangeen_AU
dc.subjectPorosityen_AU
dc.subjectSymmetryen_AU
dc.subjectMaterialsen_AU
dc.subjectMatteren_AU
dc.subjectMuon probesen_AU
dc.titleSpin depolarization of Muonium in Mesoporous Silicaen_AU
dc.typeConference Paperen_AU
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