Grain charging in an intermediately collisional plasma
2012 (English)In: Europhysics letters, ISSN 0295-5075, E-ISSN 1286-4854, Vol. 97, no 3, 35001- p.Article in journal (Refereed) Published
The charges of mu m-size particles in the quasineutral bulk plasma of a dc discharge are determined experimentally in a pressure range between 100 and 500 Pa, spanning the transition between the weakly collisional and highly collisional (hydrodynamic) regimes, where the ion mean free path drops below the plasma screening length. The charge is determined using the force balance condition from the measured particle drift velocities in stable particle flows. A simple interpolation formula for the ion flux to the grain in the transitional regime is shown to fit quite well the experimental results.
Place, publisher, year, edition, pages
2012. Vol. 97, no 3, 35001- p.
IdentifiersURN: urn:nbn:se:kth:diva-91254DOI: 10.1209/0295-5075/97/35001ISI: 000300400000022ScopusID: 2-s2.0-84857094703OAI: oai:DiVA.org:kth-91254DiVA: diva2:509207
QC 201203122012-03-122012-03-122012-03-16Bibliographically approved