skip to main content

SciTech ConnectSciTech Connect

Title: Self-excited dust-acoustic waves in an electron-depleted nanodusty plasma

A dust density wave field is observed in a cloud of nanodust particles confined in a radio frequency plasma. Simultaneous measurements of the dust properties, grain size and density, as well as the wave parameters, frequency and wave number, allow for an estimate of the ion density, ion drift velocity, and the dust charge using a hybrid model for the wave dispersion. It appears that the charge on the dust grains in the cloud is drastically reduced to tens of elementary charges compared with isolated dust particles in a plasma. The charge is much higher at the cloud's periphery, i.e., towards the void in the plasma center and also towards the outer edge of the cloud.
Authors:
; ; ;  [1]
  1. IEAP, Christian-Albrechts-Universit├Ąt, D-24098 Kiel (Germany)
Publication Date:
OSTI Identifier:
22489887
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 22; Journal Issue: 11; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; DISPERSIONS; DUSTS; ELECTRONS; GRAIN SIZE; ION DENSITY; ION DRIFT; PARTICLES; PLASMA; RADIOWAVE RADIATION; SOUND WAVES; VELOCITY