http://www.cnr.it/ontology/cnr/individuo/prodotto/ID192460
Dust in plasma I. Particle size and ion-neutral collision effects (Articolo in rivista)
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- Dust in plasma I. Particle size and ion-neutral collision effects (Articolo in rivista) (literal)
- Anno
- 2012-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1002/ctpp.201100018 (literal)
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- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- Taccogna Francesco (literal)
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- http://onlinelibrary.wiley.com/doi/10.1002/ctpp.201100018/abstract (literal)
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- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
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- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- Titolo
- Dust in plasma I. Particle size and ion-neutral collision effects (literal)
- Abstract
- A fully kinetic self-consistent model of an absorbing particle immersed in stationary isotropic weakly collisional
plasma has been developed. The combined effects of particle size and ion-neutral charge exchange collisions
have been investigated for intermediate regimes, where no analytic theories are available. It is shown that
collisional effects related to the ion orbital destruction (presence of extrema in ion flux collected on the particle
surface and in particle potential and charge) are important for small particles, while they are totally absent for
large particles. The potential distribution around the particle is quite well represented by a Yukawa form, but
with an effective screening length that shows different dependences from the gas pressure for small and large
particle size. Analytical fitting formulas of particle charge and potential and screening length depending on the
particle radius parameter and on the Knudsen number have been obtained. (literal)
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