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Charging and coagulation of dust in protoplanetary environments

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dc.contributor.author Matthews, Lorin
dc.contributor.author Land, Victor
dc.contributor.author Hyde, Truell
dc.identifier.citation The Astrophysical Journal, 744:8 (12pp), 2012 January 1 en_US
dc.identifier.uri http://hdl.handle.net/2104/8252
dc.description.abstract Combining a particle–particle, particle–cluster, and cluster–cluster agglomerationmodel with an aggregate charging model, the coagulation and charging of dust particles in plasma environments relevant for protoplanetary disks have been investigated, including the effect of electron depletion in high dust density environments. The results show that charged aggregates tend to grow by adding small particles and clusters to larger particles and clusters, and that cluster–cluster aggregation is significantly more effective than particle–cluster aggregation. Comparisons of the grain structure show that with increasing aggregate charge the compactness factor, φ_σ , decreases and has a narrower distribution, indicating a fluffier structure. Neutral aggregates are more compact, with larger φ_σ , and exhibit a larger variation in fluffiness. Overall, increased aggregate charge leads to larger, fluffier, and more massive aggregates. en_US
dc.publisher Astrophysical Journal en_US
dc.title Charging and coagulation of dust in protoplanetary environments en_US
dc.type Article en
dc.identifier.doi 10.1088/0004-637X/744/1/8
dc.description.keywords dusty plasma en_US
dc.description.keywords aggregation of dust en_US
dc.description.keywords protoplanetary disk en_US
dc.description.keywords accretion disks en_US
dc.description.keywords formation of planets and satellites en_US
dc.description.keywords plasmas en_US


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