title: Estimation of screening length and electric charge on particles in single-layered dusty plasma crystals.
abstract: Single-layered two-dimensional crystals of dust particles are often observed in dusty plasma experiments and the data on their structure can be obtained by analyzing the images usually taken by charge-coupled [corrected] device cameras. We give here some formulas for practical purposes of estimating the screening length and the electric charge on a dust particle from the surface density and the radius of such finite two-dimensional dust crystals. The formulas are derived on the basis of our theoretical approach which has been successful in reproducing results of molecular-dynamics simulations on dusty plasmas. An example of application is also shown.
authors.affiliation: Department of Electrical and Electronic Engineering, Faculty of Engineering, Okayama University, Tsushimanaka 3-1-1, Okayama 700-8530, Japan. totsujic@elec.okayama-u.ac.jp
authors.forename: Chieko
authors.initials: C
authors.lastname: Totsuji
authors.forename: M Sanusi
authors.initials: MS
authors.lastname: Liman
authors.forename: Kenji
authors.initials: K
authors.lastname: Tsuruta
authors.forename: Hiroo
authors.initials: H
authors.lastname: Totsuji