Dust-acoustic dispersion relation in three-dimensional complex plasmas under microgravity
2007 (English)In: New Journal of Physics, ISSN 1367-2630, Vol. 9Article in journal (Refereed) Published
A series of dedicated experiments with the Plasma Kristal Experiment ( PKE)-Nefedov ( Nefedov et al 2003 New J. Phys. 5 33) set-up were performed on board the International Space Station to measure the dispersion relation ( DR) for the longitudinal dust-acoustic ( DA) waves in quasi-isotropic three-dimensional ( 3D) complex plasmas. The waves were excited by applying ac electric modulation of variable frequency to the radio frequency ( rf) electrodes. The amplitude of excitation was varied with frequency to ensure a 'sufficiently linear' regime of the dust density perturbations. The DR was obtained by measuring the induced density perturbations, revealing fairly good agreement with a simple multispecies theory of DA waves.
Place, publisher, year, edition, pages
2007. Vol. 9
current glow-discharge, waves, instabilities, modes
IdentifiersURN: urn:nbn:se:kth:diva-16972DOI: 10.1088/1367-2630/9/9/327ISI: 000249702600004ScopusID: 2-s2.0-34548662183OAI: oai:DiVA.org:kth-16972DiVA: diva2:335015
QC 201005252010-08-052010-08-05Bibliographically approved