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Radiation pressure measurements on micron-size individual dust grains


Metadata FieldValueLanguage
dc.contributorEdward Thomas, thomaed@auburn.eduen_US
dc.creatorAbbas, MM
dc.creatorThomas, E.
dc.date.accessioned2020-06-18T21:16:21Z
dc.date.available2020-06-18T21:16:21Z
dc.date.created2003-06
dc.identifier10.1029/2002JA009744en_US
dc.identifier.urihttps://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2002JA009744en_US
dc.identifier.urihttp://hdl.handle.net/11200/49892
dc.description.abstractMeasurements of electromagnetic radiation pressure have been made on individual silica (SiO2) particles levitated in an electrodynamic balance. These measurements were made by inserting single charged particles of known diameter in the 0.2- to 6.82-mum range and irradiating them from above with laser radiation focused to beam widths of -175 400 mm at ambient pressures -10(-3) - 10(-4) torr. The downward displacement of the particle due to the radiation force is balanced by the electrostatic force indicated by the compensating dc potential applied to the balance electrodes, providing a direct measure of the radiation force on the levitated particle. Theoretical calculations of the radiation pressure with a least-squares fit to the measured data yield the radiation pressure efficiencies of the particles, and comparisons with Mie scattering theory calculations provide the imaginary part of the refractive index of SiO2 and the corresponding extinction and scattering efficiencies.en_US
dc.formatPDFen_US
dc.publisherAMER GEOPHYSICAL UNIONen_US
dc.relation.ispartofJOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICSen_US
dc.relation.ispartofseries2169-9380en_US
dc.subjectcosmic dust; interstellar dust; radiation pressure measurements; electrodynamic for radiation pressure; measurements; radiation pressure measurements on individual dust grainsen_US
dc.subjectELECTRODYNAMIC BALANCE; LIGHT-SCATTERING; MIE SCATTERING; COSMIC DUST; PARTICLES; RESONANCES; FORCESen_US
dc.titleRadiation pressure measurements on micron-size individual dust grainsen_US
dc.typeTexten_US
dc.type.genreJournal Article, Academic Journalen_US
dc.citation.volume108en_US
dc.citation.issueA6en_US
dc.description.statusPublisheden_US
dc.creator.orcid0000-0002-7747-0284en_US

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